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AhBG1转基因拟南芥的ABA敏感性和抗旱性研究

Journal of South China Normal University(Natural Science Edition)(2021)

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Abstract
为探究花生基因AhBG1对拟南芥ABA敏感性和抗旱性的影响,以过表达AhBG1拟南芥为材料,检测其ABA敏感性及脱水处理下ABA质量分数、叶片失水率、干旱存活率及ABA稳态相关基因表达变化.结果表明:AhBG1是编码花生β-葡萄糖苷酶的家族成员,定位于细胞质;与野生型相比,AhBG1过表达拟南芥植株在干旱条件下体内ABA水平提高,干旱存活率增加,增强有关生物合成途径和信号转导途径相关基因上调,抑制氧化代谢途径相关基因表达.AhBG1蛋白可能催化ABA-GE形成ABA,提高植物体内ABA的质量分数,通过影响ABA稳态相关基因的表达从而提高植物的抗旱性.
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