Stepwise selection of natural variations at CTB2 and CTB4a improves cold adaptation during domestication of japonica rice

Stepwise selection of natural variations at CTB2 and CTB4a improves cold adaptation during domestication of japonica rice

© 2021 The Authors. New Phytologist © 2021 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 231(2021), 3 vom: 08. Aug., Seite 1056-1072
1. Verfasser: Li, Jilong (VerfasserIn)
Weitere Verfasser: Zeng, Yawen, Pan, Yinghua, Zhou, Lei, Zhang, Zhanying, Guo, Haifeng, Lou, Qijin, Shui, Guanghou, Huang, Hanguang, Tian, He, Guo, Yongmei, Yuan, Pingrong, Yang, Hong, Pan, Guojun, Wang, Ruiying, Zhang, Hongliang, Yang, Shuhua, Guo, Yan, Ge, Song, Li, Jinjie, Li, Zichao
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't cold adaptation de novo mutation rice standing variation stepwise selection
Beschreibung
Zusammenfassung:© 2021 The Authors. New Phytologist © 2021 New Phytologist Foundation.
The improvement of cold adaptation has contributed to the increased growing area of rice. Standing variation and de novo mutation are distinct natural sources of beneficial alleles in plant adaptation. However, the genetic mechanisms and evolutionary patterns underlying these sources in a single population during crop domestication remain elusive. Here we cloned the CTB2 gene, encoding a UDP-glucose sterol glucosyltransferase, for cold tolerance in rice at the booting stage. A single standing variation (I408V) in the conserved UDPGT domain of CTB2 originated from Chinese Oryza rufipogon and contributed to the cold adaptation of Oryza sativa ssp. japonica. CTB2 is located in a 56.8 kb region, including the previously reported gene CTB4a in which de novo mutation arose c. 3200 yr BP in Yunnan province, China, conferring cold tolerance. Standing variation of CTB2 and de novo mutation of CTB4a underwent stepwise selection to facilitate cold adaptation to expand rice cultivation from high-altitude to high-latitude regions. These results provide an example of stepwise selection on two kinds of variation and describe a new molecular mechanism of cold adaptation in japonica rice
Beschreibung:Date Completed 12.07.2021
Date Revised 12.07.2021
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.17407