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在不同的老化条件下,洋 (Allium cepa L.) 种子的生理和分子变化

Reza Kamaei¹, Mohammad Kafi², Reza Tavakkol Afshari³

¹Ferdowsi University of Mashhad, Mashhad, Iran.

BMC plant biology

|February 2, 2024

概括

洋种子的恶化与发芽的减少和关键基因 (AMY1,BMY1,CTR1,NPR1) 的表达的降低有关. 卡泽伦陆地品种对衰老的敏感性更大,糖和电解质泄漏增加,突出了种子生存能力中的分子机制.

科学领域:

植物科学植物科学
种子生理学种子生理学
分子生物学分子生物学

背景情况:

与其他蔬菜相比,洋种子的存储寿命有限.
了解种子恶化机制对于保持生存能力至关重要.
这项研究研究了洋种子在不同土地种类和老化水平的老化.

研究的目的:

在各种老化条件下评估洋种子的发芽,生化,生理和分子特征的变化.
为了确定霍兰德,卡泽伦陆地品种和扎尔根品种的老化耐受性差异.
阐明特定基因和酶在洋种子恶化的作用.

主要方法:

发芽百分比和发芽率的比较分析.
对糖含量和电解质泄漏的生物化学测定.
测量抗氧化酶活动 (CAT,SOD,GPx).
对AMY1,BMY1,CTR1和NPR1.1的基因表达分析.

主要成果:

卡泽伦陆地品种的葡萄糖,果糖,总糖和电解质泄漏量增加,发芽率显著降低 (54%降低).
随着年龄的增长,蛋白质含量和抗氧化酶活性 (CAT,SOD,GPx) 降低,在Kazerun中更为明显.
与Horand和Zargan相比,在Kazerun观察到AMY1,BMY1,CTR1和NPR1基因的表达较低.

结论:

AMY1,BMY1,CTR1和NPR1基因下调对压力下洋种子发芽产生负面影响.
种子老化增加了糖和电解质泄漏,降低了蛋白质含量,降低了抗氧化酶活性,导致恶化.
建议进一步研究分子方面和原料处理方法,以提高洋种子的寿命.

关键词:

电解质泄漏是因为电解质泄漏.基因表达基因表达基因表达发芽的百分比是多少蛋白质度是蛋白质的度.糖总量糖总量糖总量

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