向勇課題組

　　Xiang Yong Lab

　　課題組長介紹：

　　向勇， 研究員，博士生導師。植物基因組研究中心副主任，綠色超級稻分子設計和全基因組育種首席科學家。主要研究領域為種子休眠與萌發(fā)的機理研究及應用。研究成果在The Plant Cell，Plant Physiology，Current Opinion in Plant Biology等學術期刊發(fā)表。

 

　　研究方向:

　　種子休眠與萌發(fā)的機理研究及應用。以水稻和擬南芥為研究對象，結合基因組學、遺傳學、分子生物學等手段，克隆控制種子活力 (休眠、壽命和逆境萌發(fā)等)的功能基因(或QTL)，并進行深入的生物學功能研究，闡明相關性狀調控的分子機制，為直播稻的分子育種提供候選基因和理論基礎。

 

　　研究進展：

　　1） 利用3K自然群體材料，結合基因型和田間表型通過GWAS分析，鑒定了11個與休眠性狀顯著關聯(lián)的位點。利用重組自交系群體材料結合基因型和田間表型通過連鎖分析，鑒定了7個與休眠性狀緊密連鎖的QTL位點(LOD>3)。目前正在進行相關位點的精細定位。

　　2）通過突變體篩選和圖位克隆鑒定控制種子休眠的新基因Reduced Dormancy5（RDO5）。RDO5編碼一個胚乳特異表達PP2C蛋白磷酸化酶。RDO5突變使得種子休眠完全喪失，超表達RDO5顯著提高種子休眠。

Selected Publications

1. Xu, Z#, Zhang, J#, Wang, X#, Essemine, J, Jin, J, Qu, M*, Xiang, Y*, & Chen, W*. Cold-induced Inhibition of Photosynthesis-related Genes Integrated by a TOP6 Complex in Rice Mesophyll Cells. Nucleic Acids Research 2023, 51: 1823-1842.

2. Zhao, B, Zhang, H, Chen, T, Ding, L, Zhang, L, Ding, X, Zhang, J, Qian, Q*, and Xiang, Y*. Sdr4 Dominates Pre‐harvest Sprouting and Facilitates Adaptation to Local Climatic Condition in Asian Cultivated Rice. J. Integr. Plant Biol. 2022, 64: 1246–1263.

3. Li, Q#; Chen, X#; Zhang, S; Shan, S; Xiang, Y*. DELAY OF GERMINATION 1, the Master Regulator of Seed Dormancy, Integrates the Regulatory Network of Phytohormones at the Transcriptional Level to Control Seed Dormancy. Curr. Issues Mol. Biol. 2022, 44, 6205–6217.

4. Liu F, Zhang H, Ding L, Soppe WJ, and Xiang Y*. REVERSAL OF RDO5 1, a Homolog of Rice Seed Dormancy4, Interacts with bHLH57 and Controls ABA Biosynthesis and Seed Dormancy in Arabidopsis. Plant Cell 2020, 32: 1933–1948.

5. Lou L, Ding L, Wang T, and Xiang Y*. Emerging Roles of RNA-Binding Proteins in Seed Development and Performance. Int. J. Mol. Sci 2020, 21, 6822.

6. Nee, G#; Xiang, Y#; Soppe, WJ. The Release of Dormancy, a Wake-up Call for Seeds to Germinate. Current Opinion in Plant Biology 2017, 35:8-14.

7. Xiang Y, Song B, Née G, Kramer K, Finkemeier I, Soppe WJ. Sequence Polymorphisms at the REDUCED DORMANCY 5 Pseudophosphatase underlie Natural Variation in Arabidopsis Dormancy. Plant Physiology 2016, 171:2659-2670.

8. Xiang Y, Nakabayashi K, Ding J, He F, Bentsink L, Soppe WJ: REDUCED DORMANCY 5 encodes a protein phosphatase 2C that is required for seed dormancy in Arabidopsis. Plant cell 2014. 26：4362-4375.

9. Xiang Y, Tang N, Du H, Ye H, Xiong L: Characterization of OsbZIP23 as a key player of the basic leucine zipper transcription factor family for conferring abscisic acid sensitivity and salinity and drought tolerance in rice. Plant physiology 2008, 148(4):1938-1952.

10. Xiang Y, Huang Y, Xiong L: Characterization of stress-responsive CIPK genes in rice for stress tolerance improvement. Plant physiology 2007, 144(3):1416-1428.

向勇課題組更新于2023年8月