TY - JOUR
T1 - The grain yield modulator miR156 regulates seed dormancy through the gibberellin pathway in rice
AU - Miao, Chunbo
AU - Wang, Zhen
AU - Zhang, Lin
AU - Yao, Juanjuan
AU - Hua, Kai
AU - Liu, Xue
AU - Shi, Huazhong
AU - Zhu, Jian Kang
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China for Young Scientists (grant. no. 31800241), the Shanghai Center for Plant Stress Biology, Chinese Academy of Sciences, and Zhejiang A&F University. We thank Life Science Editors for editorial assistance and thank Donglei Yang for providing the SLR1 primary antibody.
Publisher Copyright:
© 2019, The Author(s).
PY - 2019/12/1
Y1 - 2019/12/1
N2 - The widespread agricultural problem of pre-harvest sprouting (PHS) could potentially be overcome by improving seed dormancy. Here, we report that miR156, an important grain yield regulator, also controls seed dormancy in rice. We found that mutations in one MIR156 subfamily enhance seed dormancy and suppress PHS with negligible effects on shoot architecture and grain size, whereas mutations in another MIR156 subfamily modify shoot architecture and increase grain size but have minimal effects on seed dormancy. Mechanistically, mir156 mutations enhance seed dormancy by suppressing the gibberellin (GA) pathway through de-represssion of the miR156 target gene Ideal Plant Architecture 1 (IPA1), which directly regulates multiple genes in the GA pathway. These results provide an effective method to suppress PHS without compromising productivity, and will facilitate breeding elite crop varieties with ideal plant architectures.
AB - The widespread agricultural problem of pre-harvest sprouting (PHS) could potentially be overcome by improving seed dormancy. Here, we report that miR156, an important grain yield regulator, also controls seed dormancy in rice. We found that mutations in one MIR156 subfamily enhance seed dormancy and suppress PHS with negligible effects on shoot architecture and grain size, whereas mutations in another MIR156 subfamily modify shoot architecture and increase grain size but have minimal effects on seed dormancy. Mechanistically, mir156 mutations enhance seed dormancy by suppressing the gibberellin (GA) pathway through de-represssion of the miR156 target gene Ideal Plant Architecture 1 (IPA1), which directly regulates multiple genes in the GA pathway. These results provide an effective method to suppress PHS without compromising productivity, and will facilitate breeding elite crop varieties with ideal plant architectures.
UR - http://www.scopus.com/inward/record.url?scp=85070977959&partnerID=8YFLogxK
U2 - 10.1038/s41467-019-11830-5
DO - 10.1038/s41467-019-11830-5
M3 - Article
C2 - 31444356
AN - SCOPUS:85070977959
VL - 10
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 3822
ER -