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식물 노화·수명 연구단
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Natural variations at the Stay-Green gene promoter control lifespan and yield in rice cultivars

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Title
Natural variations at the Stay-Green gene promoter control lifespan and yield in rice cultivars
Author(s)
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
Publication Date
2020-06
Journal
NATURE COMMUNICATIONS, v.11, no.1, pp.2819 -
Publisher
NATURE PUBLISHING GROUP
Abstract
© 2020, The Author(s).Increased grain yield will be critical to meet the growing demand for food, and could be achieved by delaying crop senescence. Here, via quantitative trait locus (QTL) mapping, we uncover the genetic basis underlying distinct life cycles and senescence patterns of two rice subspecies, indica and japonica. Promoter variations in the Stay-Green (OsSGR) gene encoding the chlorophyll-degrading Mg++-dechelatase were found to trigger higher and earlier induction of OsSGR in indica, which accelerated senescence of indica rice cultivars. The indica-type promoter is present in a progenitor subspecies O. nivara and thus was acquired early during the evolution of rapid cycling trait in rice subspecies. Japonica OsSGR alleles introgressed into indica-type cultivars in Korean rice fields lead to delayed senescence, with increased grain yield and enhanced photosynthetic competence. Taken together, these data establish that naturally occurring OsSGR promoter and related lifespan variations can be exploited in breeding programs to augment rice yield
URI
https://pr.ibs.re.kr/handle/8788114/7118
ISSN
2041-1723
Appears in Collections:
Center for Plant Aging Research (식물 노화·수명 연구단) > Journal Papers (저널논문)
Files in This Item:
Nature Communications (2020) Natural variations at the Stay-Green gene promoter control lifespan and yield in rice cultivars.pdfDownload

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