ZmMADS69 functions as a flowering activator through the ZmRap2.7-ZCN8 regulatory module and contributes to maize flowering time adaptation

Bibliographische Detailangaben
Veröffentlicht in:	The New phytologist. - 1979. - 221(2019), 4 vom: 01. März, Seite 2335-2347
1. Verfasser:	Liang, Yameng (VerfasserIn)
Weitere Verfasser:	Liu, Qiang, Wang, Xufeng, Huang, Cheng, Xu, Guanghui, Hey, Stefan, Lin, Hung-Ying, Li, Cong, Xu, Dingyi, Wu, Lishuan, Wang, Chenglong, Wu, Weihao, Xia, Jinliang, Han, Xu, Lu, Sijia, Lai, Jinsheng, Song, Weibin, Schnable, Patrick S, Tian, Feng
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2019
Zugriff auf das übergeordnete Werk:	The New phytologist
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't ZCN8 ZmMADS69 ZmRap2.7 adaptation flowering time maize teosinte Florigen mehr... MADS Domain Proteins Plant Proteins

Beschreibung
Zusammenfassung:	© 2018 The Authors. New Phytologist © 2018 New Phytologist Trust. Flowering time is a major determinant of the local adaptation of plants. Although numerous loci affecting flowering time have been mapped in maize, their underlying molecular mechanisms and roles in adaptation remain largely unknown. Here, we report the identification and characterization of MADS-box transcription factor ZmMADS69 that functions as a flowering activator through the ZmRap2.7-ZCN8 regulatory module and contributes to adaptation. We show that ZmMADS69 underlies a quantitative trait locus controlling the difference in flowering time between maize and its wild ancestor, teosinte. Maize ZmMADS69 allele is expressed at a higher level at floral transition and confers earlier flowering than the teosinte allele under long days and short days. Overexpression of ZmMADS69 causes early flowering, while a transposon insertion mutant of ZmMADS69 exhibits delayed flowering. ZmMADS69 shows pleiotropic effects for multiple traits of agronomic importance. ZmMADS69 functions upstream of the flowering repressor ZmRap2.7 to downregulate its expression, thereby relieving the repression of the florigen gene ZCN8 and causing early flowering. Population genetic analyses showed that ZmMADS69 was a target of selection and may have played an important role as maize spread from the tropics to temperate zones. Our findings provide important insights into the regulation and adaptation of flowering time
Beschreibung:	Date Completed 24.10.2019 Date Revised 30.09.2020 published: Print-Electronic GENBANK: MH937291, MH937329, MH988461, MH988687 Citation Status MEDLINE
ISSN:	1469-8137
DOI:	10.1111/nph.15512