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Functional divergence between soybean FLOWERING LOCUS T orthologues FT2a and FT5a in post-flowering stem growth

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Title: Functional divergence between soybean FLOWERING LOCUS T orthologues FT2a and FT5a in post-flowering stem growth
Authors: Takeshima, Ryoma Browse this author →KAKEN DB
Nan, Haiyang Browse this author
Harigai, Kohei Browse this author
Dong, Lidong Browse this author
Zhu, Jianghui Browse this author
Lu, Sijia Browse this author
Xu, Meilan Browse this author
Yamagishi, Noriko Browse this author
Yoshikawa, Nobuyuki Browse this author →KAKEN DB
Liu, Baohui Browse this author
Yamada, Tetsuya Browse this author →KAKEN DB
Kong, Fanjiang Browse this author
Abe, Jun Browse this author →KAKEN DB
Keywords: bZIP transcription factor
post-flowering stem growth
Issue Date: 1-Aug-2019
Publisher: Oxford University Press
Journal Title: Journal of Experimental Botany
Volume: 70
Issue: 15
Start Page: 3941
End Page: 3953
Publisher DOI: 10.1093/jxb/erz199
PMID: 31035293
Abstract: Genes in the FLOWERING LOCUS T (FT) family integrate external and internal signals to control various aspects of plant development. In soybean (Glycine max), FT2a and FT5a play a major role in floral induction, but their roles in post-flowering reproductive development remain undetermined. Ectopic overexpression analyses revealed that FT2a and FT5a similarly induced flowering, but FT5a was markedly more effective than FT2a for the post-flowering termination of stem growth. The down-regulation of Dt1, a soybean orthologue of Arabidopsis TERMINAL FLOWER1, in shoot apices in early growing stages of FT5a-overexpressing plants was concomitant with highly up-regulated expression of APETALA1 orthologues. The Dt2 gene, a repressor of Dt1, was up-regulated similarly by the overexpression of FT2a and FT5a, suggesting that it was not involved in the control of stem termination by FT5a. In addition to the previously reported interaction with FDL19, a homologue of the Arabidopsis bZIP protein FD, both FT2a and FT5a interacted with FDL12, but only FT5a interacted with FDL06. Our results suggest that FT2a and FT5a have different functions in the control of post-flowering stem growth. A specific interaction of FT5a with FDL06 may play a key role in determining post-flowering stem growth in soybean.
Type: article
Appears in Collections:農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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