miR319-Regulated TCP3 Modulates Silique Development Associated with Seed Shattering in Brassicaceae
文献类型： 外文期刊
作者： Cao, Biting 1 ; Wang, Hongfeng 3 ; Bai, Jinjuan 3 ; Wang, Xuan 3 ; Li, Xiaorong 3 ; Zhang, Yanfeng 5 ; Yang, Suxin 6 ; He, Yuke 3 ; Yu, Xiang 1 ;
作者机构： 1.Shanghai Jiao Tong Univ, Sch Life Sci & Biotechnol, Shanghai 200240, Peoples R China
2.Shanghai Acad Agr Sci, Hort Res Inst, Shanghai Key Lab Protected Hort Technol, Shanghai 201106, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Mol Plant Sci, Shanghai Inst Plant Physiol & Ecol, Natl Key Lab Plant Mol Genet, Fenglin Rd 300, Shanghai 200032, Peoples R China
4.Shandong Univ, Sch Life Sci, Key Lab Plant Dev & Environm Adaptat Biol, Minist Educ, Qingdao 266101, Peoples R China
5.Hybrid Rape Res Ctr Shaanxi Prov, Yangling 712100, Shaanxi, Peoples R China
6.Northeast Inst Geog & Agroecol, Key Lab Soybean Mol Design Breeding, Changchun 130102, Peoples R China
关键词： TCP3; miR319; Arabidopsis; rapeseed; silique shattering
期刊名称：CELLS （ 影响因子：7.666； 五年影响因子：7.677 ）
ISSN：
年卷期： 2022 年 11 卷 19 期
页码：
收录情况： SCI
摘要： Seed shattering is an undesirable trait that leads to crop yield loss. Improving silique resistance to shattering is critical for grain and oil crops. In this study, we found that miR319-targeted TEOSINTE BRANCHED 1, CYCLOIDEA, and PROLIFERATING CELL NUCLEAR ANTIGEN BINDING FACTOR (TCPs) inhibited the process of post-fertilized fruits (silique) elongation and dehiscence via regulation of FRUITFULL (FUL) expression in Arabidopsis thaliana and Brassica napus. AtMIR319a activation resulted in a longer silique with thickened and lignified replum, whereas overexpression of an miR319a-resistant version of AtTCP3 (mTCP3) led to a short silique with narrow and less lignified replum. Further genetic and expressional analysis suggested that FUL acted downstream of TCP3 to negatively regulate silique development. Moreover, hyper-activation of BnTCP3.A8, a B. napus homolog of AtTCP3, in rapeseed resulted in an enhanced silique resistance to shattering due to attenuated replum development. Taken together, our findings advance our knowledge of TCP-regulated silique development and provide a potential target for genetic manipulation to reduce silique shattering in Brassica crops.
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