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ZmGAPB可以提高玉米幼苗的干旱和盐应激耐受性

Renjie Wang¹, Hongying Mou¹, Yuhe Pei¹

¹College of Agronomy, Qingdao Agricultural University, Qingdao, 266109, China.

Plant physiology and biochemistry : PPB

|December 17, 2025

概括

玉米中的甘-3-酸盐脱酶B子单元 (GAPB) 对光合作用和非生物应激耐受性至关重要. 它的缺失会损害生长,并降低植物对干旱和盐分条件的抵抗力.

科学领域:

植物生物学植物生物学
分子生物学分子生物学
生物化学生物化学

背景情况:

甘-3-酸盐脱酶B亚单元 (GAPB) 对光合作用CO2固定和酶调节至关重要.
GAPB在植物对非生物应激反应中的作用尚不清楚.

研究的目的:

为了研究在非生物压力下ZmGAPB的表达模式.
为了功能性地描述玉米中ZmGAPB的非生物应激耐受性.

主要方法:

在盐和干旱压力下分析ZmGAPB表达在玉米同系B73和 zmgapb突变的分析.
对焦显微镜用于亚细胞定位.
表型分析,叶绿素含量,透调整和抗氧化酶活性测定.

主要成果:

在盐和干旱压力下,ZmGAPB的表达增加,并且在叶绿体中局部化.
zmgapb 突变体显示生长,光合作用,叶绿素和透调整的减少.
在盐应激下,突变植物表现出氧化损伤增加,抗氧化活性降低,离子稳态变化 (较高的Na+,较低的K+/Na+比率).

结论:

ZmGAPB在玉米对盐和干旱等非生物应激的耐受性方面发挥着重要作用.
ZmGAPB是一种潜在的候选基因,可以增强玉米的非生物应激抵抗力.

关键词:

干旱干旱干旱干旱在GAPB中,GAPB是GAPB.玉米玉米玉米是一种盐盐盐盐盐盐盐

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