沈辉;殷亚蕊;武军凯;王海静;黄佳;左波;张立彬;于凤鸣;

• 1:河北科技师范学院农学与生命科技学院
• 2:河北科技师范学院园艺科技学院

摘要(Abstract)：

【目的】分析‘鸭梨’和‘金坠梨’花粉蛋白差异,探讨‘金坠梨’花粉侧自交亲和突变的机制。【方法】以‘鸭梨’及其自交亲和性芽变‘金坠梨’花粉为材料,利用双向电泳技术(two-dimensional electrophoresis,2-DE)对二者花粉总蛋白进行分离,并对差异蛋白进行功能和质谱分析,通过qRT-PCR进行相关差异基因的表达验证。【结果】分离得到23个差异蛋白,其中14个蛋白在‘金坠梨’中上调表达,9个蛋白在‘金坠梨’下调表达;对其中差异显著的10个蛋白点质谱检测结果表明,1个为半胱氨酸甲基转移酶(cysteine S-methyltransferase,4 803),1个为存储蛋白(Storage protein,5413),4个为蛋白酶类:果糖激酶(fructokinase,5 316)、顺乌头酸水合酶(aconitate hydratase,5 811)、烯酰-ACP-还原酶(Enoyl-ACP reductase,7 303)和JPR ORF1蛋白(JPR ORF1 protein,7 506),4个为HSP家族蛋白:HSP70伴侣26(HSP70-type chaperone 26,8 633)、HSP 90.5(8 822)和2个ER结合蛋白(ER-binding protein,4 209和8 805)。这些蛋白涉及到遗传信息处理、碳水化合物代谢、能量代谢、酶和氨基酸代谢等生理过程;qRT-PCR对8个基因进行验证,发现部分基因在蛋白水平与基因表达水平有明显差异。这些差异的蛋白在不同的信号途径中参与了‘金坠梨’花粉侧自交亲和突变。【结论】明确了‘鸭梨’和‘金坠梨’花粉侧自交亲和性突变中差异表达蛋白,为进一步研究梨亚科自交不亲和性的调控机理提供理论依据。

关键词(KeyWords)： 梨;花粉;自交不亲和;双向电泳;蛋白质组学

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(31401853)

作者(Author): 沈辉;殷亚蕊;武军凯;王海静;黄佳;左波;张立彬;于凤鸣;

Email:

DOI: 10.13925/j.cnki.gsxb.20190208

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