Are All Paraphyllia the Same?
Autor: | Tatiana V. Voronkova, Ulyana N. Spirina, Michael S. Ignatov |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
0106 biological sciences
0301 basic medicine Lamina Morphogenesis Amblystegiaceae morphogenesis Plant Science lcsh:Plant culture 01 natural sciences Homology (biology) abscisic acid 03 medical and health sciences chemistry.chemical_compound fluridone Botany Hylocomiaceae Primordium lcsh:SB1-1110 Leskea Abscisic acid Original Research paraphyllia biology branch primordia biology.organism_classification Moss 030104 developmental biology chemistry pseudoparaphyllia 010606 plant biology & botany |
Zdroj: | Frontiers in Plant Science Frontiers in Plant Science, Vol 11 (2020) |
ISSN: | 1664-462X |
Popis: | Moss paraphyllia, the trichome-like or foliose structures on moss stem surfaces, are usually treated as epidermal outgrowths. However, in some taxa of the moss families Leskeaceae, Neckeraceae, and Amblystegiaceae their distribution along the stem is consistently correlated with parts of the stem surface near branch primordia. In other moss families, Climaciaceae, Hylocomiaceae, and Pseudoleskeaceae the specific paraphyllia-generating epidermal layer produces paraphyllia evenly all along the stem. These results suggest that there are at least two different types of regulation of paraphyllia development; however, both of them may be involved in the morphogenesis of paraphyllia in some families, for example in the Thuidiaceae. Exogenous abscisic acid treatment consistently increases the number of paraphyllia of the Leskea-type, and it also induces the development of proximal branch leaves that normally do not develop a lamina above the stem surface. This fact supports conclusions regarding the homology of the Leskea-type of paraphyllia with leaves. |
Databáze: | OpenAIRE |
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