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首页> 外文期刊>Plant Cell, Tissue and Organ Culture: An International Journal on in Vitro Culture of Higher Plants >BpMADS12 mediates endogenous hormone signaling: effect on plant development Betula platyphylla
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BpMADS12 mediates endogenous hormone signaling: effect on plant development Betula platyphylla

机译:BpMADS12介导内源激素信号传导:对植物发育的影响白桦

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摘要

BpMADS12 is one of the SOC1-like genes isolated from Betula platyphylla. The expression pattern of BpMADS12 was detected in both vegetative and reproductive organs by real-time quantitative RT-PCR and promoter analyses. Analysis of the promoter region suggested that BpMADS12 is involved in abiotic stress and hormone responses. In this study, BpMADS12 was expressed in transgenic birch under the control of the CaMV 35S promoter. Our results showed that the transgene had no effect on flowering time, whereas it affected the number and size of female inflorescences and decreased the seed vigor. Plant morphology was also affected; the height and ground diameter were significantly greater in the transgenic birch than in nontransgenic line (NT). Levels of brassinosteroid (BR) and zeatinriboside (ZR) were higher in transgenic lines than in NT due to the overexpression of BpMADS12 in birch, which resulted in the up-regulation of some BR and ZR biosynthesis and signaling genes. We propose that BpMADS12is involved in hormone biosynthesis and signal-mediated growth and development.
机译:BpMADS12是从白桦(Betula platyphylla)分离的SOC1样基因之一。通过实时定量RT-PCR和启动子分析在营养和生殖器官中检测到BpMADS12的表达模式。对启动子区域的分析表明,BpMADS12与非生物胁迫和激素反应有关。在这项研究中,BpMADS12在CaMV 35S启动子的控制下在转基因桦树中表达。我们的结果表明,转基因对开花时间没有影响,而影响雌性花序的数量和大小并降低了种子活力。植物形态也受到影响;转基因桦树的高度和地面直径显着大于非转基因系(NT)。由于桦木中BpMADS12的过表达,转基因品系中的油菜素甾体(BR)和玉米醇溶核苷(ZR)的水平高于NT,这导致一些BR和ZR生物合成和信号基因的上调。我们建议BpMADS12参与激素生物合成和信号介导的生长和发育。

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