한빛사 논문
Dongjin Shin1,8, Sichul Lee2,8,*, Tae-Heon Kim1,8, Jong-Hee Lee1, Joonheum Park2, Jinwon Lee2, Ji Yoon Lee1, Lae-Hyeon Cho3, Jae Young Choi4, Wonhee Lee5, Ji-Hwan Park2, Dae-Woo Lee3, Hisashi Ito6, Dae Heon Kim7, Ayumi Tanaka6, Jun-Hyeon Cho1, You-Chun Song1, Daehee Hwang2,5, Michael D. Purugganan4, Jong-Seong Jeon3, Gynheung An3 & Hong Gil Nam2,5,*
1Department of Southern Area Crop Science, National Institute of Crop Science (NICS), RDA, Miryang, Republic of Korea.
2Center for Plant Aging Research, Institute for Basic Science (IBS), Daegu, Republic of Korea.
3Crop Biotech Institute and Graduate School of Biotechnology, Kyung Hee University, Yongin, Republic of Korea.
4Center for Genomics and Systems Biology, Department of Biology, New York University, New York, NY, USA.
5Department of New Biology, DGIST, Daegu, Republic of Korea.
6Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan.
7Department of Biology, Sunchon National University, Sunchon, Republic of Korea.
8These authors contributed equally: Dongjin Shin, Sichul Lee, Tae-Heon Kim
*Corresponding author
Abstract
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.
논문정보
TOP52020년 후보
관련 링크
연구자 ID
관련분야 연구자보기
관련분야 논문보기
해당논문 저자보기