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Comparative proteomics analysis reveals the mechanism of fertility alternation of thermosensitive genic male sterile rice lines under low temperature inducement

文献类型： 外文期刊

作者： Song, Liru 1 ; Liu, Zhongqi 2 ; Tong, Jianhua 4 ; Xiao, Langtao 4 ; Ma, Hao 1 ; Zhang, Haiqing 2 ;

作者机构： 1.Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Jiangsu, Peoples R China

2.Hunan Agr Univ, Coll Agron, Collaborat Innovat Ctr Grain & Oil Crops South Ch, Changsha, Hunan, Peoples R China

3.Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha, Hunan, Peoples R China

4.Hunan Agr Univ, Hunan Prov Key Lab Phytohormones, Changsha, Hunan, Peoples R China

关键词： Fertility alternation mechanism;Low temperature inducement;Plant proteomics;Thermosensitive genic male sterile rice

期刊名称：PROTEOMICS （ 影响因子：3.984； 五年影响因子：3.831 ）

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收录情况： SCI

摘要： Thermosensitive genic male sterile (TGMS) rice line has made great economical contributions in rice production. However, the fertility of TGMS rice line during hybrid seed production is frequently influenced by low temperature, thus leading to its fertility/sterility alteration and hybrid seed production failure. To understand the mechanism of fertility alternation under low temperature inducement, the extracted proteins from young panicles of two TGMS rice lines at the fertility alternation sensitivity stage were analyzed by 2DE. Eighty-three protein spots were found to be significantly changed in abundance, and identified by MALDI-TOF-TOF MS. The identified proteins were involved in 16 metabolic pathways and cellular processes. The young panicles of TGMS rice line Zhu 1S possessed the lower ROS-scavenging, indole-3-acetic acid level, soluble protein, and sugar contents as well as the faster anther wall disintegration than those of TGMS rice line Zhun S. All these major differences might result in that the former is more stable in fertility than the latter. Based on the majority of the 83 identified proteins, together with microstructural, physiological, and biochemical results, a possible fertile alteration mechanism in the young panicles of TGMS rice line under low temperature inducement was proposed. Such a result will help us in breeding TGMS rice lines and production of hybrid seed.

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