This study investigates the genetic basis of differing life cycles and senescence patterns in two rice subspecies, *indica* and *japonica*. Through quantitative trait locus (QTL) mapping, promoter variations in the Stay-Green (OsSGR) gene were identified as a key factor. *Indica* rice exhibited earlier senescence due to higher and earlier OsSGR induction driven by its promoter variations. Introgression of *japonica* OsSGR alleles into *indica* cultivars resulted in delayed senescence, increased grain yield, and improved photosynthetic competence, demonstrating the potential of OsSGR promoter variations for enhancing rice yield.
Publisher
Nature Communications
Published On
Jun 04, 2020
Authors
Dongjin Shin, Sichul Lee, Tae-Heon Kim, Jong-Hee Lee, Joonheum Park, Jinwon Lee, Ji Yoon Lee, Lae-Hyeon Cho, Jae Young Choi, Wonhee Lee, Ji-Hwan Park, Dae-Woo Lee, Hisashi Ito, Dae Heon Kim, Ayumi Tanaka, Jun-Hyeon Cho, You-Chun Song, Daehee Hwang, Michael D. Purugganan, Jong-Seong Jeon, Gynheung An, Hong Gil Nam
Tags
rice
OsSGR
senescence
genetics
yield improvement
QTL mapping
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