Recognizing Plant Cell first authors: Liyun Jiang

Liyun Jiang, first author of The APETALA2-like transcription factor SUPERNUMRARY BRACT controls rice seed shattering and seed size

Current Position: Ph.D candidate, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, China

Education: 2012–B.S., Agronomy, Jiangxi Agricultural University, Nanchang, China

Non-scientific interest: Discovering traditional Chinese food, gardening, and watching documentaries

Brief bio: After getting my BS degree from Jiangxi Agricultural University in 2012, I was lucky to join the group of Dr. Lubin Tan at China Agricultural University to pursue my PhD degree. During my PhD, I focused on the elucidation of the mechanism underlying rice seed shattering using forward genetics approach. I firstly identified a loss-of-shattering mutant through a screen of mutagenized wild rice introgression lines with naturally high shattering. Then, I got the candidate gene controlling seed shattering using the MutMap strategy and confirmed the mutation in the known gene SUPERNUMRARY BRACT (SNB), encoding a plant-specific APETALA2-like transcription factor, resulted in the change of seed shattering through transformation experiments. Finally, we found that SNB modulate seed shattering by positively regulate the expression of two rice REPLUMLESS (RPL) orthologs, qSH1 and SH5. Interestingly, the introduction of the mutated allele of SNB into a current high-yielded cultivar can increase grain length grain weight, implying that the mutated allele would be applied in rice breeding for enhancing grain yield. I had a very nice and enjoyable research experience during my PhD, and I hope to get an opportunity to continue my scientific career in crop breeding and genetics.


The APETALA2-like transcription factor SUPERNUMRARY BRACT controls rice seed shattering and seed size



2012.08–至今    中国农业大学农学院  作物遗传育种专业 博士研究生

2008.09–2012.06  江西农业大学农学院 农学专业         农学学士




2012年从江西农业大学本科毕业后,我有幸加入中国农业大学谭禄宾教授课题组攻读博士学位。博士期间,我致力于从正向遗传学角度阐释调控水稻落粒性的基础遗传机制。首先,我们从野生稻落粒渗入系EMS诱变群体中筛选到一个落粒性降低的突变体。随后,通过MutMap突变体定位策略获得落粒候选基因,结合遗传转化试验我最终确定已知基因SNBSUPERNUMRARY BRACT,参与编码植物特有的AP2转录因子)第九内含子3′ 末端由C到A的单碱基突变导致突变体中落粒性降低。最后,我们发现SNB通过正向调控水稻中两个拟南芥RPLREPLUMLESS)同源基qSH1SH5的表达调控水稻落粒性。有趣的是,将SNB突变型等位基因导入优良籼稻品种93-11中能增加粒长和粒重,这表明SNB突变型等位基因具有增产的潜力。