種子の数を制御する制御スライドを発見 Researchers discover regulatory slide that controls the number of seeds
2022-04-07 マックス・プランク研究所
・マックス・プランク分子植物生理学研究所の研究者と中国の研究者が発表した、トウモロコシとイネの収量増加の可能性に関する新しい結果は、この現象の理解を深めるための重要な一歩であり、植物育種に好影響を与える可能性があります。
<関連情報>
- https://www.mpg.de/18515602/0407-mopf-all-roads-lead-to-rome-149640-x?c=2249
- https://www.science.org/doi/10.1126/science.abg7985
トウモロコシおよびイネの穀物収量を増加させるWD40タンパク質の収束的選択 Convergent selection of a WD40 protein that enhances grain yield in maize and rice
WENKANG CHEN,LU CHEN,XUAN ZHANG,NING YANG,JIANGHUA GUO,MIN WANG,SHENGHUI JI, XIANGYU ZHAO,PENGFEI YIN,LICHUN CAI,JING XU,LILI ZHANG,YINGJIA HAN,YINGNI XIAO,GEN XU ,YUEBIN WANG,SHUHUI WANG,SHENG WUFANG YANG,DAVID JACKSON,JINKUI CHENG,SAIHUA CHEN,CHUANQING SUN,FENG QIN,FENG TIAN,ALISDAIR R. FERNIE,JIANSHENG LI,JIANBING YAN AND XIAOHONG YANG
Science Published:25 Mar 2022 DOI: 10.1126/science.abg7985
トウモロコシとイネの収量の収斂選択のメカニズム
©JianbingYan、Huazong Agricultural University、武漢
Abstract
A better understanding of the extent of convergent selection among crops could greatly improve breeding programs. We found that the quantitative trait locus KRN2 in maize and its rice ortholog, OsKRN2, experienced convergent selection. These orthologs encode WD40 proteins and interact with a gene of unknown function, DUF1644, to negatively regulate grain number in both crops. Knockout of KRN2 in maize or OsKRN2 in rice increased grain yield by ~10% and ~8%, respectively, with no apparent trade-offs in other agronomic traits. Furthermore, genome-wide scans identified 490 pairs of orthologous genes that underwent convergent selection during maize and rice evolution, and these were enriched for two shared molecular pathways. KRN2, together with other convergently selected genes, provides an excellent target for future crop improvement.
