Independent recruitment of FRUITFULL-like transcription factors in the convergent origins of vernalization-responsive grass flowering.

Autor: Paliocha M; Department of Plant Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, N-1432 Ås, Norway. Electronic address: martin.paliocha@nmbu.no., Schubert M; Department of Plant Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, N-1432 Ås, Norway. Electronic address: marian.schubert@nmbu.no., Preston JC; Department of Plant Biology, College of Agriculture and Life Sciences, The University of Vermont, Burlington, VT 05405, USA. Electronic address: jill.preston@uvm.edu., Fjellheim S; Department of Plant Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, N-1432 Ås, Norway. Electronic address: siri.fjellheim@nmbu.no.
Jazyk: angličtina
Zdroj: Molecular phylogenetics and evolution [Mol Phylogenet Evol] 2023 Feb; Vol. 179, pp. 107678. Date of Electronic Publication: 2022 Dec 16.
DOI: 10.1016/j.ympev.2022.107678
Abstrakt: Flowering in response to low temperatures (vernalization) has evolved multiple times independently across angiosperms as an adaptation to match reproductive development with the short growing season of temperate habitats. Despite the context of a generally conserved flowering time network, evidence suggests that the genes underlying vernalization responsiveness are distinct across major plant clades. Whether different or similar mechanisms underlie vernalization-induced flowering at narrower (e.g., family-level) phylogenetic scales is not well understood. To test the hypothesis that vernalization responsiveness has evolved convergently in temperate species of the grass family (Poaceae), we carried out flowering time experiments with and without vernalization in several representative species from different subfamilies. We then determined the likelihood that vernalization responsiveness evolved through parallel mechanisms by quantifying the response of Pooideae vernalization pathway FRUITFULL (FUL)-like genes to extended periods of cold. Our results demonstrate that vernalization-induced flowering has evolved multiple times independently in at least five grass subfamilies, and that different combinations of FUL-like genes have been recruited to this pathway on several occasions.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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