Panicle Apical Abortion 3 Controls Panicle Development and Seed Size in Rice.
Panicle Apical Abortion 3 Controls Panicle Development and Seed Size in Rice.
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DOI：
10.1186/s12284-021-00509-5
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发表时间：
2021-07-15
期刊：
影响因子：
--
通讯作者：
Li Y
中科院分区：
文献类型：
--
作者：
Yang F;Xiong M;Huang M;Li Z;Wang Z;Zhu H;Chen R;Lu L;Cheng Q;Wang Y;Tang J;Zhuang H;Li Y
In rice, panicle apical abortion is a common phenomenon that usually results in a decreased number of branches and grains per panicle, and consequently a reduced grain yield. A better understanding of the molecular mechanism of panicle abortion is thus critical for maintaining and increasing rice production. We reported a new rice mutant panicle apical abortion 3 (paa3), which exhibited severe abortion of spikelet development on the upper part of the branches as well as decreased grain size over the whole panicle. Using mapping-based clone, the PAA3 was characterized as the LOC_ Os04g56160 gene, encoding an H+-ATPase. The PAA3 was expressed highly in the stem and panicle, and its protein was localized in the plasma membrane. Our data further showed that PAA3 played an important role in maintaining normal panicle development by participating in the removal of reactive oxygen species (ROS) in rice. Our studies suggested that PAA3 might function to remove ROS, the accumulation of which leads to programmed cell death, and ultimately panicle apical abortion and decreased seed size in the paa3 panicle. The online version contains supplementary material available at 10.1186/s12284-021-00509-5.
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