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首页> 外文期刊>Journal of Experimental Botany >Effect of exogenous methanol on glycolate oxidase and photorespiratory intermediates in cotton
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Effect of exogenous methanol on glycolate oxidase and photorespiratory intermediates in cotton

机译:外源甲醇对棉花乙醇酸氧化酶和光呼吸中间产物的影响

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摘要

Application of methanol (MeOH) inhibits photorespiration and enhances growth and yield in C-3 plants. However, the underlying cellular and molecular mechanisms are not clear. In this study, we investigated the effects of foliar application of MeOH (30%, v/v) on glycolate oxidase (GO) activity and photorespiratory intermediates in cotton leaves in a field experiment. MeOH treatment significantly inhibited GO activity (by 30% compared with the controls). We also found that endogenous glyoxylate, a photorespiratory intermediate, increased and glycine decreased significantly in MeOH-treated plants. Serine increased significantly in MeOH-treated plants. These results thus demonstrated that exogenous MeOH can modulate GO activity and the production of photorespiratory intermediates, and sheds new lights on our current understanding of how exogenous MeOH inhibits photorespiration and enhances the growth and yield of C-3 plants such as cotton.
机译:甲醇(MeOH)的使用抑制了C-3植物的光呼吸作用,并提高了生长和产量。但是,潜在的细胞和分子机制尚不清楚。在这项研究中,我们在田间实验中研究了叶面施用MeOH(30%,v / v)对棉叶中乙醇酸氧化酶(GO)活性和光呼吸中间产物的影响。 MeOH处理显着抑制了GO活性(与对照相比,降低了30%)。我们还发现,在经过MeOH处理的植物中,内源性乙醛酸(一种光呼吸中间体)显着增加,甘氨酸显着降低。在经过MeOH处理的植物中,丝氨酸显着增加。因此,这些结果表明,外源性MeOH可以调节GO活性和光呼吸中间产物的产生,并为我们目前对外源性MeOH如何抑制光呼吸作用并增强C-3植物(如棉花)的生长和产量的理解提供了新的思路。

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