Seedling development in maize cv. B73 and blue light-mediated proteomic changes in the tip vs. stem of the coleoptile
文献类型: 外文期刊
作者: Deng, Zhiping 1 ; Wang, Zhi-Yong 2 ; Kutschera, Ulrich 2 ;
作者机构: 1.Zhejiang Acad Agr Sci, Inst Virol & Biotechnol, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310021, Zhejiang, Peoples R China
2.Carnegie Inst Sci, Dept Plant Biol, Stanford, CA 94305 USA
关键词: Blue light;Coleoptile;Seedling development;Maize;Proteomics
期刊名称:PROTOPLASMA ( 影响因子:3.356; 五年影响因子:3.298 )
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收录情况: SCI
摘要: In 2009, the draft genome of the reference inbred line of maize (Zea mays L. spp. mays cv. B73) was published so that, using this specific corn variety, molecular analyses of physiological processes became possible. However, the morphology and developmental patterns of B73 maize, compared with that of the more frequently used hybrid varieties, have not yet been analyzed. Here, we describe organ development in seedlings of B73 maize and in those of six other hybrid cultivars, and document significant morphological as well as quantitative differences between these varieties of Z. mays. In a second set of experiments, we used etiolated seedlings of B73 maize to analyze the effect of blue light (BL) on the patterns of proteins in the tip vs. growing region of this sheath-like organ. By using two-dimensional difference gel electrophoresis (2D DIGE), coupled with tandem mass spectrometry, we detected, in the microsomal fraction of maize coleoptile tips, rapid changes in the abundance of protein spots of maize phototropin 1 and several metabolic enzymes. In the sub-apical (growing) region of the coleoptile, proteomic changes were less pronounced. These results suggest that the tip of the coleoptile of B73 maize may serve as a unique model system for dissecting BL responses in a light-sensitive plant organ of known function.
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