作物学报 ›› 2013, Vol. 39 ›› Issue (05): 845-854.doi: 10.3724/SP.J.1006.2013.00767
郭宝健,宋方威,冯万军,隋志鹏,孙其信,倪中福*
GUO Bao-Jian,SONG Fang-Wei,FENG Wan-Jun,SUI Zhi-Peng,SUN Qi-Xin,NI Zhong-Fu*
摘要:
为探讨玉米穗粒数杂种优势形成的分子机制,以玉米强优势杂交种豫玉22及其亲本综3和87-1的花器官形成期雌穗为材料,采用高通量的2-DE和MALDI TOF MS技术,建立了它们的蛋白差异表达谱,并对差异蛋白进行了质谱鉴定。结果显示,在检测到的1 290个蛋白点中,有114个(8.84%)在杂交种与亲本之间的表达差异达到显著水平,其中表现单亲沉默、偏高亲、中亲表达、偏低亲、杂种上调、杂种下调、亲本特异和杂种特异表达模式的蛋白点分别为27、25、15、13、11、11、10和2个。另外,成功鉴定出其中的104个差异表达蛋白点,涉及代谢、信号转导、能量、转录、蛋白质合成、蛋白运输与储藏、细胞生长与分裂、细胞结构、抗病防御、次生代谢、转座子及功能未知和假定蛋白等12个功能类别。玉米杂交种与亲本蛋白在丰度上的明显差异及涉及多个功能类别,可能与玉米穗粒数杂种优势的形成有关。
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