施用硫化氢对玉米幼苗生理生化及根系分泌物的影响

IF 1 Q3 PLANT SCIENCES
Plant Root Pub Date : 2023-01-01 DOI:10.3117/plantroot.17.71
Kabir Ghoto, Gui-Feng Gao, Martin Simon, Zhi-Jun Shen, Huan Li, Ming-Yue Wei, Hai-Lei Zheng
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引用次数: 0

摘要

研究了供体硫化钠(NaHS)释放的硫化氢(H2S)对水培6 d玉米幼苗的影响。测定了植物生物量、丙二醛(MDA)、过氧化氢(H2O2)、超氧化物(O2•−)含量和根分泌物(有机酸)含量。结果表明,100µM和200µM NaHS是玉米幼苗生长发育的最适宜浓度,不影响MDA和H2O2含量,但改变了O2•−。此外,与对照(CK)相比,高浓度500和1000µM NaHS对这些参数有不利影响。NaHS处理使根系分泌物的pH值下降。根分泌物中的有机酸,富马酸、乙酸、甲酸和苹果酸在100µM NaHS处理下含量较高,乳酸和柠檬酸在100和200µM NaHS处理下含量较高。与对照相比,各NaHS浓度下草酸含量均降低。在500µM和1000µM NaHS处理下,所分析的有机酸含量均较低。综上所述,施用NaHS对上述各项指标均有影响,NaHS浓度越高,对玉米幼苗毒性越大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Physiological, biochemical and root exudate response of maize seedlings to hydrogen sulfide applications
The effects of hydrogen sulfide (H2S), released from the donor sodium hydrosulfide (NaHS), on maize seedlings grown hydroponically for 6 days were investigated. Plant biomass, malondialdehyde (MDA), hydrogen peroxide (H2O2), superoxide (O2•−) content, and root exudates (organic acids) were measured. Results showed that 100 and 200 µM NaHS is the most appropriate and suitable concentration for the growth and development of maize seedlings, without affecting the MDA and H2O2 contents but altering the O2•−. In addition, high concentrations of 500 and 1000 µM NaHS adversely affected these parameters compared with the control (CK). The pH of the root exudates declined under NaHS treatments. The organic acids in the root exudates, including fumaric, acetic, formic, and malic acids exhibited higher contents at 100 µM NaHS treatment, the lactic and citric acids were higher at both 100 and 200 µM NaHS. In contrast, oxalic acid was reduced at all NaHS concentrations compared with the CK. Low contents of all the organic acids analyzed were found under 500 and 1000 µM NaHS treatment. In conclusion, all the above parameters were affected by the application of NaHS, while higher NaHS concentration was toxic for maize seedlings.
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来源期刊
Plant Root
Plant Root PLANT SCIENCES-
CiteScore
1.50
自引率
0.00%
发文量
2
期刊介绍: Plant Root publishes original papers, either theoretical or experimental, that provide novel insights into plant roots. The Journal’s subjects include, but are not restricted to, anatomy and morphology, cellular and molecular biology, biochemistry, physiology, interactions with soil, mineral nutrients, water, symbionts and pathogens, food culture, together with ecological, genetic and methodological aspects related to plant roots and rhizosphere. Work at any scale, from the molecular to the community level, is welcomed.
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