低温胁迫下外源SOD对枇杷幼果抗寒性影响机理

王晓晓; 汪志辉<sup>*</sup>; 熊 博; 廖凤玲; 范茜茜; 高婧斐; 张婷婷

引用本文:	王晓晓, 汪志辉, 熊博, 廖凤玲, 范茜茜, 高婧斐, 张婷婷.低温胁迫下外源SOD对枇杷幼果抗寒性影响机理[J].广西植物,2014,(5):700-705.[点击复制]
	WANG Xiao-Xiao, WANG Zhi-Hui, XIONG Bo, LIAO Feng-Ling, FAN Qian-Qian, GAO Jing-Fei, ZHANG Ting-Ting.Cold resistance mechanism study on effect of exogenous SOD under low temperature stress of young loquat fruits[J].Guihaia,2014,(5):700-705.[点击复制]

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低温胁迫下外源SOD对枇杷幼果抗寒性影响机理
王晓晓, 汪志辉^*, 熊博, 廖凤玲, 范茜茜, 高婧斐, 张婷婷
四川农业大学园艺学院, 四川雅安 625014

摘要:

以大五星枇杷幼果为试验试材,在自然低温胁迫下,研究不同浓度的聚天冬氨酸锰(MSOD)喷施枇杷幼果后的抗氧化酶活性、细胞膜透性及丙二醛含量。结果表明:不同浓度MSOD(5.0、12.5、20.0 mg/L)均能提高幼果抗氧化酶系统中的超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、抗坏血酸过氧化物酶(APX)和过氧化物酶(POD)的活性、减少细胞膜透性和丙二醛(MDA)含量。而在试验浓度范围内,12.5 mg/L的MSOD处理为最佳喷施浓度。

关键词: 低温胁迫枇杷抗氧化酶聚天冬氨酸锰

DOI：10.3969/j.issn.1000-3142.2014.05.021

分类号:Q945.78; S661.9

基金项目:

Cold resistance mechanism study on effect of exogenous SOD under low temperature stress of young loquat fruits

WANG Xiao-Xiao, WANG Zhi-Hui^*, XIONG Bo, LIAO Feng-Ling, FAN Qian-Qian, GAO Jing-Fei, ZHANG Ting-Ting

Department of Horticulture, Sichuan Agricultural University, Ya'an 625014, China Department of Horticulture, Sichuan Agricultural University, Ya'an 625014, China

Abstract:

Young loquat fruits'activities of antioxidant enzymes,cell membrane permeability and content of malondialdehyde(MDA)after spraying different concentrations of Poly-aspartic Mangan(MSOD)under low temperature stress were studied. The results showed that MSOD with different concentrations(5.0,12.5,20.0 mg/L)could reduce cell membrane permeability and content of MDA and enhance the activities of superoxide dismutase(SOD),catalase(CAT),ascorbate peroxidase(APX)and peroxidase(POD),the concentration of 12.5 mg/L had the best effect.

Key words: low temperature stress Eriobotrya japonica antioxidant enzymes Poly-aspartic Mangan