Dramatic Bevavior of Cotyledons Under Adverse Conditions

Butuzova, Oksana

doi:10.2139/ssrn.4423271

2023

DOI: 10.2139/ssrn.4423271

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Dramatic Bevavior of Cotyledons Under Adverse Conditions

Oksana Butuzova¹

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2024

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Polycotyly: How Little Do We Know?

2024

Plants

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Polycotyly, an interesting characteristic of seed-bearing dicotyledonous plants with more than two cotyledons, represents one of the least explored plant characters for utilization, even though cotyledon number was used to classify flowering plants in 1682. Gymnosperm and angiosperm species are generally known to have one or two cotyledons, but scattered reports exist on irregular cotyledon numbers in many plant species, and little is known about the extent of polycotyly in plant taxa. Here, we attempt to update the documentation of reports on polycotyly in plant species and highlight some lines of research for a better understanding of polycotyly. This effort revealed 342 angiosperm species of 237 genera in 80 (out of 416) families and 160 gymnosperm species of 26 genera in 6 (out of 12) families with reported or cited polycotyly. The most advanced research included the molecular-based inference of the phylogeny of flowering plants, showing a significant departure from the cotyledon-based classification of angiosperm plants, and the application of genetic cotyledon mutants as tools to clone and characterize the genes regulating cotyledon development. However, there were no reports on breeding lines with a 100% frequency of polycotyly. Research is needed to discover plant species with polycotyly and to explore the nature, development, genetics, evolution, and potential use of polycotyly.

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Polycotyly: How Little Do We Know?

2024

Plants

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Dramatic Bevavior of Cotyledons Under Adverse Conditions

Cited by 1 publication

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Polycotyly: How Little Do We Know?

Polycotyly: How Little Do We Know?

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