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J Integr Plant Biol, 60 (7): 530-535, Research Article
SDG721 and SDG705 are required for rice growth
Pengfei Jiang1,2, Shiliang Wang1,2, Aziz Ul Ikram2, Zuntao Xu2, Haiyang Jiang1, Beijiu Cheng1* and Yong Ding2*
1National Engineering Laboratory of Crop Stress Resistance/ Key Laboratory of Crop Biology of Anhui Province, School of Life Sciences, Anhui Agricultural University, Hefei 230036, China
2CAS Center for Excellence in Molecular Plant Sciences, School of Life Sciences, University of Science & Technology of China, Hefei 230027, China

**Correspondences:
Email: Yong Ding (dingyong@ustc.edu.cn, Dr Ding is fully responsible for the distribution of all materials associated with this article), Bejiu Cheng (cbj@ahau.edu.cn)
Abstract

H3K4me3 plays important roles in development, transcription, and environmental responses. Here, we report that SDG721 (SET‐domain group protein 721) and SDG705 are involved in regulating rice development. SDG721 and SDG705 encode TRITHORAX‐like proteins, which appear to modulate H3K4 methylation levels. Loss of SDG721 and SDG705 function resulted in GA‐deficient phenotypes, including semi‐dwarfism, reduced cell length, and reduced panicle branching. The transcripts levels and H3K4me3 levels of GA biosynthesis genes and GA signaling pathway genes were downregulated in the sdg721 sdg705 plants. Together, these results suggest that SDG721 and SDG705 regulate H3K4 methylation, which is crucial for plant development in rice.

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Received: 05 February 2018      Published: 23 February 2018
© 2018 Institute of Botany, Chinese Academy of Sciences
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