Characterization and quantitative trait locus mapping of late-flowering from a Thai soybean cultivar introduced into a photoperiod-insensitive genetic background

Sun, Fei; Xu, Meilan; Park, Cheolwoo; Dwiyanti, Maria Stefanie; Nagano, Atsushi J.; Zhu, Jianghui; Watanabe, Satoshi; Kong, Fanjiang; Liu, Baohui; Yamada, Tetsuya; Abe, Jun

Characterization and quantitative trait locus mapping of late-flowering from a Thai soybean cultivar introduced into a photoperiod-insensitive genetic background

Sun, Fei; Xu, Meilan; Park, Cheolwoo et al.

PLoS ONE, 2019, 14(12), e0226116

Permalink : https://hdl.handle.net/2115/78840

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アクセス権	open access
URI	https://hdl.handle.net/2115/78840
タイトル	Characterization and quantitative trait locus mapping of late-flowering from a Thai soybean cultivar introduced into a photoperiod-insensitive genetic background
著者	Sun, Fei ; Xu, Meilan ; Park, Cheolwoo ; Dwiyanti, Maria Stefanie ; Nagano, Atsushi J. ; Zhu, Jianghui ; Watanabe, Satoshi ; Kong, Fanjiang ; Liu, Baohui ; Yamada, Tetsuya ; Abe, Jun
著者名 Sun, Fei
著者名 Xu, Meilan
著者名 Park, Cheolwoo
著者名 Dwiyanti, Maria Stefanie
著者名 Nagano, Atsushi J.
著者名 Zhu, Jianghui
著者名 Watanabe, Satoshi
著者名 Kong, Fanjiang
著者名 Liu, Baohui
著者名 Yamada, Tetsuya
e-Rad_Researcher 00192998 著者名 Abe, Jun
言語	英語
キーワード	MAP-BASED CLONING
	NATURAL VARIATION
	LONG DAYS
	MATURITY
	ASSOCIATION
	RESPONSES
	FAMILY
	E1
	PHYTOCHROME
	INHERITANCE
発行日	2019-12-05
出版者	PLOS
収録物名	PLoS ONE
巻(号)	14(12)
ページ	e0226116
抄録	The timing of both flowering and maturation determine crop adaptability and productivity. Soybean (Glycine max) is cultivated across a wide range of latitudes. The molecular-genetic mechanisms for flowering in soybean have been determined for photoperiodic responses to long days (LDs), but remain only partially determined for the delay of flowering under short-day conditions, an adaptive trait of cultivars grown in lower latitudes. Here, we characterized the late-flowering (LF) habit introduced from the Thai cultivar K3 into a photoperiod-insensitive genetic background under different photo-thermal conditions, and we analyzed the genetic basis using quantitative trait locus (QTL) mapping. The LF habit resulted from a basic difference in the floral induction activity and from the suppression of flowering, which was caused by red light-enriched LD lengths and higher temperatures, during which FLOWERING LOCUS T (FT) orthologs, FT2a and FT5a, were strongly down-regulated. QTL mapping using gene-specific markers for flowering genes E2, FT2a and FT5a and 829 single nucleotide polymorphisms obtained from restriction-site associated DNA sequencing detected three QTLs controlling the LF habit. Of these, a QTL harboring FT2a exhibited large and stable effects under all the conditions tested. A resequencing analysis detected a nonsynonymous substitution in exon 4 of FT2a from K3, which converted the glycine conserved in FT-like proteins to the aspartic acid conserved in TERMINAL FLOWER 1-like proteins (floral repressors), suggesting a functional depression in the FT2a protein from K3. The effects of the remaining two QTLs, likely corresponding to E2 and FT5a, were environment dependent. Thus, the LF habit from K3 may be caused by the functional depression of FT2a and the down-regulation of two FT genes by red light-enriched LD conditions and high temperatures.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution 4.0 International
PISSN	1932-6203
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1371/journal.pone.0226116