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在四种玉米基因型中,应激耐受性的变化:对植物生理学,根形态学和叶绿体微观结构的影响

Tingting An¹, Qiqiang Kuang², Yujie Wu²

¹State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi, 712100, China; College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China; The UWA Institute of Agriculture & School of Agriculture and Environment, The University of Western Australia, Perth, 6009, Australia.

Plant physiology and biochemistry : PPB

|November 18, 2023

概括

有较浅根和较高生物质的玉米基因型积累了更多的 (Cd),表现出更大的耐受性. 这一发现有助于在Cd污染的土壤上种植玉米.

科学领域:

植物科学植物科学
环境毒理学环境毒理学
农业科学农业科学

背景情况:

(Cd) 对植物和人类健康构成重大风险.
玉米 (Zea mays L.) 在积累方面表现出基因型变异性.
了解这些变化对于食品安全和农业可持续性至关重要.

研究的目的:

研究各种根形态的玉米基因型中的积和耐受性.
为了将根特征与吸收和植物生理反应相关联.
确定玉米中耐受性背后的机制.

主要方法:

在半水培系统中,在不同度的 (0,10,20μmol L-1) 下种植四种玉米基因型.
植物生长,生理和积的评估,移植后39天.
分析根形态,细胞损伤,氧化物积累,抗氧化酶活性和植物激素水平.

主要成果:

根特征,包括生物质和浅水深度,与积累和生物度因子正相关.
遗传型Shengrui999和Zhengdan958的总含量较高,在压力下耐受性更强.
毒性诱导了叶绿体膜降解和减少粉储量,而耐受性基因型积累了可溶性蛋白质,并表现出更高的催化酶活性和 gibberellic 酸水平.

结论:

在玉米的根形态,积和耐受性之间存在显著的联系.
耐受性玉米基因型具有诸如更高根生物质,更浅的根系和增强的生理防御机制等特征.
这项研究为开发适应污染环境的玉米品种提供了基础.

关键词:

Cd生物度和转位能量分散式X射线微分析玉米玉米玉米是一种根参数根参数根参数承受压力承受压力

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