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Дата последнего поиска статьи во внешних источниках: 24 сентября 2020 г.
Аннотация:Moss paraphyllia, the trichome-like or foliose structures on moss stem surfaces, areusually treated as epidermal outgrowths. However, in some taxa of the moss familiesLeskeaceae, Neckeraceae, and Amblystegiaceae their distribution along the stem isconsistently correlated with parts of the stem surface near branch primordia. In othermoss families, Climaciaceae, Hylocomiaceae, and Pseudoleskeaceae the specificparaphyllia-generating epidermal layer produces paraphyllia evenly all along the stem.These results suggest that there are at least two different types of regulation of paraphylliadevelopment; however, both of them may be involved in the morphogenesis of paraphylliain some families, for example in the Thuidiaceae. Exogenous abscisic acid treatmentconsistently increases the number of paraphyllia of the Leskea-type, and it also inducesthe development of proximal branch leaves that normally do not develop a lamina abovethe stem surface. This fact supports conclusions regarding the homology of the Leskeatypeof paraphyllia with leaves.