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Vivipary
Vivipary
Vivipary
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Watsonia meriana, near the end of flowering, has cormlets that eventually drop and root.
Red mangrove seeds germinate while still on the parent tree.
Vivipary in overripe tomato

In plants, vivipary occurs when seeds or embryos begin to develop before they detach from the parent. Plants such as some Iridaceae and Agavoideae grow cormlets in the axils of their inflorescences. These fall and in favourable circumstances they have effectively a whole season's start over fallen seeds. Similarly, some Crassulaceae, such as Bryophyllum, develop and drop plantlets from notches in their leaves, ready to grow. Such production of embryos from somatic tissues is asexual vegetative reproduction that amounts to cloning.

Description

[edit]

Most seed-bearing fruits produce a hormone that suppresses germination until after the fruit or parent plant dies, or the seeds pass through an animal's digestive tract. At this stage, the hormone's effect will dissipate and germination will occur once conditions are suitable. Some species lack this suppressant hormone as a central part of their reproductive strategy. For example, fruits that develop in climates without large seasonal variations.[1] This phenomenon occurs most frequently on ears of corn, tomatoes, strawberries, peppers, pears, citrus fruits, and plants that grow in mangrove environments.[2]

In some species of mangroves, for instance, the seed germinates and grows from its own resources while still attached to its parent. Seedlings of some species are dispersed by currents if they drop into the water, but others develop a heavy, straight taproot that commonly penetrates mud when the seedling drops, thereby effectively planting the seedling. This contrasts with the examples of vegetative reproduction mentioned above, in that the mangrove plantlets are true seedlings produced by sexual reproduction.[citation needed]

In some trees, like jackfruit, some citrus, and avocado, the seeds can be found already germinated while the fruit goes overripe; strictly speaking this condition cannot be described as vivipary[citation needed], but the moist and humid conditions provided by the fruit mimic a wet soil that encourages germination. However, the seeds also can germinate under moist soil.[3]

Reproduction

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Vivipary includes reproduction via embryos, such as shoots or bulbils, as opposed to germinating externally from a dropped, dormant seed, as is usual in plants;[4][5]

Pseudovivipary

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A few plants are pseudoviviparous – instead of reproducing with seeds, there are monocots that can reproduce asexually by creating new plantlets in their spikelets.[6] Examples are seagrass species belonging to the genus Posidonia[7] and the alpine meadow-grass, Poa alpina.[8]

See also

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References

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Vivipary

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Vivipary is a reproductive in certain in which the develops into a without entering while still attached to the maternal parent, resulting in the direct release of a propagule rather than a dormant . This adaptation is particularly prominent in , where it facilitates establishment in challenging intertidal environments by enabling rapid rooting and reducing exposure to unfavorable conditions. In botanical terms, vivipary encompasses several forms, including true vivipary, where the elongated seedling itself serves as the dispersal unit, as seen in genera like Rhizophora and Bruguiera within the Rhizophoraceae family; cryptovivipary, in which the embryo germinates inside the fruit but the intact fruit detaches before full emergence, observed in species such as Avicennia and Aegiceras; and pseudovivipary, involving asexual propagules like bulbils rather than sexual embryos. These strategies are rare among angiosperms, occurring in fewer than 0.1% of species, but are evolutionarily significant in lineages adapted to saline, tidal, or arid habitats, including seagrasses (Thalassodendron) and certain cacti (Cereus jamacaru). The phenomenon is regulated by hormonal factors, such as low levels of abscisic acid (ABA), which prevent dormancy, and genetic mechanisms involving genes like LEC1 and FUS3 that control embryo maturation. Recent genomic studies in mangroves have identified key genetic modifications, such as the loss of DOG1 family genes, that promote vivipary through altered hormonal signaling, including reduced abscisic acid levels. Beyond mangroves, vivipary has been documented in diverse taxa, such as the ( squarrosa) and ( radiata), often as sporadic or environmentally induced events rather than fixed traits. Ecologically, it confers advantages like improved survival in dynamic environments, with propagules capable of horizontal dispersal over distances exceeding 50 meters in some species. However, it is distinct from in animals, which involves internal embryonic nourishment, highlighting convergent evolutionary solutions to live birth across kingdoms.

Definition and Types

True Vivipary

True vivipary in flowering plants is characterized by the precocious and continuous growth of the sexually produced embryo while still attached to the maternal parent, resulting in internal seed germination where the radicle emerges and penetrates the fruit wall (pericarp) prior to detachment and dispersal. This process bypasses traditional seed dormancy, allowing the embryo to develop into a mature propagule equipped with roots and shoots directly on the parent plant. Unlike typical seed propagation, the viviparous offspring functions as the primary dispersal unit, often rupturing the surrounding fruit structures through its own expansion. Key features of true vivipary include the absence of mechanisms, enabling uninterrupted embryonic development into a functional before separation from the parent. This phenomenon occurs in approximately 23 families of angiosperms, representing a rare reproductive strategy adapted primarily to challenging environments such as saline or coastal habitats. The propagules typically exhibit specialized morphology, such as elongated, buoyant forms that facilitate establishment upon landing in suitable substrates. A prominent example is the red mangrove, , where viviparous propagules develop within the on the parent tree, forming cigar-shaped seedlings up to 30 cm long with a prominent and before dropping into the water for dispersal. These propagules lack and can immediately root upon stranding, enhancing survival in intertidal zones. True vivipary distinctly involves a complete cycle, with the arising from fertilized ovules and actively penetrating the pericarp for release, in contrast to asexual forms that produce bulbils or plantlets without or fertilization. This sexual nature ensures in the offspring while providing advanced developmental advantages.

Cryptovivipary

Cryptovivipary is a of vivipary characterized by the of the within the enclosure while the fruit remains attached to the parent plant, with the failing to penetrate the pericarp until the fruit begins to dehisce or experiences partial detachment. This process ensures that development occurs internally, providing protection from external environmental stresses during the initial growth phase. Unlike more overt forms of vivipary, cryptovivipary involves no immediate rupture of the fruit wall, allowing the embryo to expand within the . Key characteristics of cryptovivipary include the retention of protective enclosure that mimics aspects of , such as delayed exposure to or predation, while permitting continuous growth without a true dormant period. It is prevalent in fruits with adequate internal volume that accommodate expansion without structural failure, ultimately promoting rapid post-dispersal establishment by producing partially developed seedlings ready for immediate rooting upon release. This adaptation is particularly advantageous in unstable habitats like intertidal zones, where timely enhances survival rates. A representative example of cryptovivipary occurs in the mangrove species Aegiceras corniculatum, where the germinates inside the leathery , developing into a that remains enclosed until the fruit splits open or detaches from the parent tree. In this species, the internal development supports nutritional dependence on the parent plant, optimizing for pioneer colonization in saline environments. In the cryptoviviparous process, the derives nutrients from the 's and surrounding maternal tissues, enabling sustained growth that eventually fills the fruit cavity and prepares the for emergence upon dehiscence. This nutrient absorption phase sustains the 's early development, ensuring it reaches a viable size—often several centimeters in length—before external exposure, thereby minimizing establishment risks after dispersal.

Pseudovivipary

Pseudovivipary is an asexual form of in characterized by the development of daughter plants, such as bulbils or leafy plantlets, directly from vegetative structures like inflorescences or leaves while still attached to the parent, mimicking the appearance of vivipary but entirely bypassing sexual processes and production. This strategy involves the transformation of floral meristems into vegetative buds, enabling the production of propagules that detach and establish independently. Key features of pseudovivipary include reliance on mitotic , which produces genetically identical clones of the parent plant, in contrast to the meiotic processes of . It is particularly prevalent in monocotyledons, where spikelets or structures often convert into propagules, facilitating quick dispersal and establishment without the need for or . This mode supports rapid clonal propagation, which can be advantageous in environments requiring preserved genotypes for survival, such as those with limited nutrient availability or short growing periods. Notable examples include Poa alpina (alpine bluegrass), an arctic and alpine grass that produces bulbils in place of flowers within its s, allowing in high-elevation, nutrient-poor habitats where sexual production may be unreliable. In the Posidonia oceanica, pseudoviviparous plantlets emerge from peduncles, observed in up to 26% of in certain Mediterranean meadows, aiding short-distance clonal spread and maintenance of long-lived underwater meadows. Similarly, Bryophyllum daigremontianum (also known as ), a succulent, forms constitutive plantlets along margins that develop into independent offspring, enhancing invasive potential through vegetative . Pseudovivipary differs fundamentally from true vivipary and cryptovivipary by lacking any involvement of embryos or ; propagules arise directly from somatic tissues via mitotic proliferation, ensuring complete genetic identity to the parent and avoiding the associated with . This distinction underscores its role as a purely vegetative mechanism, often triggered environmentally rather than as a standard reproductive pathway.

Occurrence and Examples

In Angiosperms

Vivipary is documented in approximately 80 families of angiosperms, encompassing 143 genera and around 195 species, which constitutes less than 0.1% of all angiosperm species. This reproductive strategy has evolved independently multiple times across diverse lineages, often in response to specific ecological pressures that favor precocious germination over . Among the angiosperm families exhibiting vivipary, notable examples beyond mangroves include the , where species such as Iris pseudacorus display viviparous germination in seed capsules, particularly in habitats. In the subfamily (Asparagaceae), relatives of Agave like Agave vivipara produce plantlets directly on the , representing a form of vegetative vivipary that ensures propagation in arid environments. The family also features vivipary, as seen in halophytic grasses such as Spartina species, where seedlings emerge from spikelets under saline conditions, aiding establishment in coastal marshes. The occurrence of vivipary in angiosperms is closely associated with environments characterized by minimal seasonal cues for , such as consistently wet , high-salinity zones, or stable microhabitats where immediate growth confers a advantage. This phenomenon includes both true vivipary, involving full embryonic development within the fruit, and cryptovivipary, where initiates internally before dispersal. In non-mangrove contexts, vivipary can manifest as a non-adaptive anomaly due to hormonal imbalances, such as reduced levels that fail to enforce . For instance, in the family, overripe (Solanum lycopersicum) fruits often exhibit vivipary, with seeds sprouting internally under stress conditions like or nutrient deficiency. Similarly, in the , strawberries ( × ananassa) occasionally show this trait on their achenes, triggered by environmental stressors or physiological disruptions, though it does not contribute to .

In Mangroves

Vivipary is particularly prominent in ecosystems, where it serves as a defining reproductive for these halophytic adapted to challenging coastal environments. Nearly all documented cases of true vivipary among angiosperms occur in mangroves, encompassing approximately 20-25 species across 9 genera, with the family being especially representative. This form of reproduction, predominantly true vivipary, enables propagules to develop advanced structures while attached to the parent, as detailed in broader classifications of vivipary types. Key examples include species in the genus Rhizophora, such as R. mangle and R. mucronata, which produce elongated viviparous propagules reaching up to 50 cm in length, complete with established root systems prior to detachment. In contrast, Avicennia species, like A. marina, display cryptovivipary, where the embryo germinates internally, breaking through the seed coat but remaining enclosed within the leathery fruit pericarp. Similarly, Kandelia obovata exhibits true vivipary, with its propagules undergoing significant elongation and hypocotyl development on the maternal plant. These mangroves inhabit intertidal zones marked by high levels, anaerobic mud substrates, and regular tidal inundations, conditions that vivipary helps circumvent by allowing propagules to bypass vulnerable early stages. The buoyant nature of the propagules facilitates their transport via water currents across these dynamic habitats. Species-specific traits further enhance this adaptation; for instance, propagules in and Kandelia possess photosynthetic cotyledons that enable independent carbon fixation, supporting extended growth—often lasting several months—on the parent tree before . In larger like R. mucronata, mature propagules can weigh up to 1 kg, amassing substantial reserves of nutrients and water to bolster survival upon landing in saline sediments.

Other Notable Cases

Incidental vivipary occurs in crop plants such as (Zea mays), where kernels sprout prematurely on the ear due to environmental stresses like fall rains rewetting dry husks or physical damage from hail and insects, disrupting hormonal balances between and (ABA). In fruits, particularly grapefruit (Citrus paradisi), vivipary manifests as seed within the fruit, observed in approximately 25% of seeds during afterripening periods, often triggered by high humidity or genetic factors leading to reduced . These cases represent aberrant, non-adaptive events that can reduce harvest yields but provide insights into dormancy regulation. Vivipary is rare in non-angiosperm , with scattered reports in gymnosperms such as certain species of , where embryos protrude and germinate while still attached to the parent , potentially linked to ecological pressures in arid or high-altitude habitats. In animals, vivipary denotes live birth with nourishment from the mother, a convergent reproductive distinct from mechanisms and thus outside the scope of botanical discussions. Reports of vivipary appear scattered across tropical and subtropical regions, particularly in grasses with awnless seeds that remain attached longer, facilitating germination under humid conditions. For context, pseudovivipary—superficially similar but involving bulbils rather than true seedlings—occurs in seagrasses like .

Mechanisms and Processes

Embryonic Development

In viviparous angiosperms, embryonic development initiates with formation through , where one nucleus fuses with the to form the and the other with the central cell to produce the , both occurring within the of the maternal . This is followed by suspensor elongation, which anchors the developing and facilitates nutrient transport, and subsequent expansion that fills the space while still attached to the parent plant. Nutrient uptake occurs continuously from maternal tissues via the suspensor and developing vascular connections, supporting uninterrupted growth without the need for independent reserves during early stages. Hormonal regulation in vivipary suppresses to enable precocious development, primarily through reduced levels of (ABA), which normally promotes dormancy and desiccation tolerance; in viviparous mangroves, ABA biosynthesis genes such as NCED and ABA2 are downregulated during embryo maturation. Auxins and promote this growth, with auxin-related genes co-expressed alongside transcription factors like LEC1 to drive embryo axis elongation, while biosynthesis genes (e.g., KS and GA20ox) are upregulated to enhance cell expansion and signals. In mangroves, signaling further aids propagule maturation by integrating with ABA and pathways, involving biosynthesis components like SAM-1 to coordinate hormonal crosstalk. Physiologically, viviparous embryos bypass the typical phase of seed maturation, maintaining high (often above 80%) to support active and within the embryo as early as the fertilized stage. Vascular connections develop between the embryo and maternal pericarp, allowing sustained and directly from the parent, which contrasts with non-viviparous seeds that rely on stored reserves post-dispersal. Genetically, vivipary phenotypes in model arise from alterations in dormancy-regulating genes, such as downregulation or mutations in Viviparous-1 (), a B3-domain that normally activates ABA-responsive genes to enforce ; mutants in exhibit precocious due to disrupted ABA signaling and failure in late embryogenesis. In viviparous species, related networks involving LEC1, FUS3, and ABI3 homologs are repurposed to maintain embryo identity while promoting growth over dormancy. Recent genomic studies have revealed that viviparous mangroves exhibit loss or dysfunction of DOG1 family genes, which normally promote ABA-induced , thereby facilitating precocious .

Germination and Dispersal

In viviparous , initiates while the propagule remains attached to the parent, with the emerging through the seed coat to mark the onset of this process, followed by continuous elongation of the and shoot axis that penetrates the surrounding layers. This attached development results in a pre-formed , complete with expanded cotyledons and an extended axis, which is shed as a mature, independent unit ready for dispersal. In true vivipary, characteristic of many mangroves, the often develops a pronounced hook at its base, formed by eccentric and tension wood, which provides leverage for penetrating soft intertidal sediments upon stranding and facilitates rapid upright orientation within 3-5 weeks. Dispersal in viviparous species, especially mangroves, occurs predominantly through hydrochory, where buoyant propagules are carried by and currents; for instance, those of Rhizophora stylosa can remain afloat for over 15 days, enabling long-distance transport. Zoological dispersal is uncommon, with water-mediated movement favored due to the propagules' streamlined, torpedo-like shape and low specific gravity that promotes flotation without immediate sinking. Upon reaching suitable substrates, these propagules quickly initiate lateral roots, typically within 4-23 days depending on species, allowing swift anchorage in muddy or sandy intertidal zones. Post-dispersal establishment benefits from the propagule's advanced developmental stage, bypassing the fragile early seedling phase and yielding relatively high success rates; experimental studies report up to 90% shoot initiation in Avicennia marina and 73% in R. stylosa. This pre-formed structure enhances survival in saline, dynamic environments by providing stored reserves in the hypocotyl for initial growth and salinity buffering. Key factors influencing outcomes include propagule size, which correlates positively with buoyancy and dispersal distance—larger examples in Rhizophora species (e.g., averaging 35 g) support extended voyages compared to smaller ones.

Ecological and Evolutionary Importance

Environmental Adaptations

Vivipary provides key adaptations to high-salinity environments by enabling propagules to germinate and develop while still attached to the parent plant, thereby avoiding direct exposure to saline conditions during the critical early stages of growth. This attachment allows the to benefit from the maternal plant's established salt-exclusion mechanisms, such as at the roots, which prevent excessive salt uptake into the developing propagule. Additionally, maternal provisioning supplies essential osmolytes, including organic compounds like and sugars, that help maintain osmotic balance and cellular hydration in the offspring, enhancing tolerance to osmotic stress upon dispersal. In habitats with unstable substrates, such as intertidal mudflats prone to tidal scouring, viviparous propagules possess pre-formed that enable rapid anchoring and establishment, minimizing displacement by waves and currents. This quick rooting resists and stabilizes the around the young plant, promoting long-term survival in dynamic coastal zones. Furthermore, the advanced developmental stage of propagules at dispersal reduces vulnerability to predation, as they are less likely to be consumed by herbivores or compared to dormant, immobile seeds that remain exposed on the surface for extended periods. Vivipary thrives in aseasonal tropical climates, where the lack of cold-induced aligns with consistently warm, humid conditions that support uninterrupted embryonic growth without reliance on environmental cues for breaking . This facilitates efficient of flood-prone intertidal areas, as buoyant propagules can float to suitable sites and immediately initiate growth, bypassing delays associated with in flooded or anaerobic soils. Overall, these environmental adaptations confer a survival advantage in harsh coastal ecosystems, with viviparous s exhibiting higher establishment success and fitness relative to non-viviparous in saline, unstable, and flooded habitats. For instance, in mangrove communities, vivipary minimizes energy expenditure on mechanisms, allowing resources to be directed toward rapid growth and dispersal in unpredictable conditions.

Evolutionary Origins

Vivipary in has evolved independently through in at least 23 families and 40 genera of angiosperms, primarily as an to challenging environments such as coastal and marine habitats. This polyphyletic trait likely first emerged during the period, coinciding with the radiation of early angiosperms around 100-125 million years ago, as inferred from phylogenetic analyses of modern lineages and the timing of diversification. Although direct evidence of vivipary is scarce due to the preservation challenges of embryonic tissues, early fossils from aquatic environments provide analogs suggesting precocious development in . Phylogenetically, vivipary is distributed across diverse angiosperm clades, with the highest prevalence in eurosids—particularly mangrove families like —and certain monocots such as seagrasses. In s, which represent a key group, vivipary has arisen convergently in multiple independent lineages, underscoring its repeated evolution in response to similar selective pressures. This distribution highlights vivipary's absence in basal gymnosperms and its restriction to advanced angiosperm groups, reflecting a transition from dormant strategies in terrestrial ancestors. At the genetic level, vivipary is underpinned by alterations in regulation, including mutations or losses in key genes such as DOG1 (Delay of Germination 1) and ABI3 (ABA Insensitive 3), which normally enforce dormancy via signaling. Recent genomic studies of mangroves, including chromosome-level assemblies of viviparous species like Kandelia obovata and K. candel, have revealed the complete absence of DOG1 family genes and expansions in transcription factors that promote embryonic growth without dormancy. These findings, from 2024 analyses comparing viviparous mangroves to non-viviparous relatives, indicate that contractions and duplications facilitate the constitutive precocious characteristic of true vivipary. The primary drivers of vivipary's stem from intense selection in coastal habitats, where nutrient-poor, saline soils and tidal stresses favor propagules that bypass to ensure rapid establishment. This represents a shift from ovipary-like seed release in ancestral angiosperms to vivipary, enhancing offspring survival amid environmental instability during the diversification of coastal ecosystems. Post-2020 molecular insights, including transcriptomic profiling, further confirm that reduced biosynthesis and altered hormonal balances underpin this adaptive transition across lineages.

References

  1. https://harvardforest1.fas.harvard.edu/publications/pdfs/Tomlinson_BotJLinneanSoc_2000.pdf
  2. https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/vivipary
  3. https://plecevo.eu/article/106696/
  4. https://www.sciencedirect.com/science/article/pii/B978012660570950160X
  5. https://www.sciencedirect.com/science/article/pii/S0960982224009138
  6. https://link.springer.com/article/10.1007/s11756-021-00713-0
  7. https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2022.1061747/full
  8. https://bsapubs.onlinelibrary.wiley.com/doi/10.3732/ajb.94.9.1577
  9. https://www.jstor.org/stable/3545579
  10. https://www.fs.usda.gov/psw/publications/allen/psw_2002_allen009.pdf
  11. https://academic.oup.com/jxb/article/58/14/3865/458849
  12. https://doi.org/10.1093/jxb/erm232
  13. https://phytokeys.pensoft.net/article/23461/
  14. https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.17551
  15. https://pmc.ncbi.nlm.nih.gov/articles/PMC4242350/
  16. https://academic.oup.com/aob/article/117/2/237/2195649
  17. https://www.degruyter.com/document/doi/10.1515/BOT.2005.026/html
  18. https://www.sciencedirect.com/science/article/pii/S0254629906000901
  19. https://www.biorxiv.org/content/10.1101/2024.12.25.630291v1.full
  20. https://www.semanticscholar.org/paper/The-evolution-of-vivipary-in-flowering-plants-Elmqvist-Cox/d60830a2daebaa4455ceb6bd4ea637c41826427c
  21. https://www.cambridge.org/core/journals/invasive-plant-science-and-management/article/biology-of-invasive-plants-7-iris-pseudacorus-l-iridaceae/B68A2388EA4A74F4D2E86CF7C4D2CF4C
  22. https://tropical.theferns.info/viewtropical.php?id=Agave+vivipara
  23. https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=1062&context=centerforlakes_pub
  24. https://www.annualreviews.org/doi/pdf/10.1146/annurev.ecolsys.31.1.107
  25. https://veggiescout.mgcafe.uky.edu/vivipary-solanaceous-crops
  26. https://www.theseedcollection.com.au/blog/Vivipary-An-Unusual-Unsettling-and-Fascinating-Phenomenon
  27. https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2024.1430782/full
  28. https://onszaden.com/Rhizophora-mucronata
  29. https://www.wetlandpark.gov.hk/en/biodiversity/beauty-of-wetlands/wildlife/kandelia-obovata
  30. https://www.sciencedirect.com/science/article/pii/S2589004221015170
  31. https://pmc.ncbi.nlm.nih.gov/articles/PMC9846782/
  32. https://www.sciencedirect.com/science/article/abs/pii/S0025326X1630443X
  33. https://www.agry.purdue.edu/ext/corn/news/timeless/Vivipary.html
  34. https://www.cropscience.bayer.us/articles/bayer/corn-kernel-sprouting
  35. https://journals.ashs.org/view/journals/hortsci/48/9/article-p1197.xml
  36. https://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/download/70169/751375156955
  37. https://www.researchgate.net/publication/42253253_Vivipary_in_Indian_Cupressaceae_and_its_Ecological_Consideration
  38. https://arizona.aws.openrepository.com/bitstream/handle/10150/646432/7062-6943-1-PB.pdf?sequence=1&isAllowed=y
  39. https://www.sciencedirect.com/science/article/abs/pii/S0025326X24003710
  40. https://pmc.ncbi.nlm.nih.gov/articles/PMC5768736/
  41. https://pmc.ncbi.nlm.nih.gov/articles/PMC167103/
  42. https://doi.org/10.1016/j.cub.2024.07.010
  43. https://doi.org/10.3389/fpls.2022.1061747
  44. https://doi.org/10.1046/j.0022-0477.2001.00584.x
  45. https://doi.org/10.3389/fpls.2016.00895
  46. https://www.pnas.org/doi/10.1073/pnas.1812470116
  47. https://pmc.ncbi.nlm.nih.gov/articles/PMC8693430/
  48. https://doi.org/10.1007/s00468-019-01895-6
  49. https://doi.org/10.1016/j.ympev.2004.09.002
  50. https://www.sciencedirect.com/science/article/abs/pii/S1055790304002805
  51. https://www.cell.com/current-biology/pdf/S0960-9822%2824%2900913-8.pdf
  52. https://pubmed.ncbi.nlm.nih.gov/39079534/
  53. https://www.biorxiv.org/content/10.1101/2020.10.19.346163v1.full.pdf
  54. https://www.nature.com/articles/s41598-018-19236-x
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