植物生态学报 ›› 2006, Vol. 30 ›› Issue (3): 465-471.DOI: 10.17521/cjpe.2006.0062
接受日期:
2005-12-02
发布日期:
2006-05-30
通讯作者:
黄高宝
作者简介:
*E-mail: huanggb@gsau.edu.cnJIAO Jian1, LI Chao-Zhou2,3, HUANG Gao-Bao4,*()
Accepted:
2005-12-02
Published:
2006-05-30
Contact:
HUANG Gao-Bao
Supported by:
摘要:
该文报道了乙烯产生抑制剂氯化钴(CoCl2)及氨基乙基乙烯基甘氨酸(Aminoethoxyvinylglycine, AVG)对高温胁迫下蚕豆(Vicia faba)幼苗叶片保护作用的现象及机制。研究结果表明,用CoCl2和AVG溶液处理,在高温胁迫前及胁迫12 h时皆显著抑制乙烯产生。20 μmol·L -1 CoCl2浇灌处理在高温胁迫前可以显著提高叶片抗氧化酶SOD、CAT、APX的酶活力,而20 μmol·L -1 AVG处理对这些抗氧化酶活力无显著影响。20 μmol·L -1 CoCl2 与20 μmol·L -1 AVG溶液浇灌处理在高温胁迫前对腐胺(Put)、亚精胺(Spd)、精胺(Spm)、叶绿素含量、活性氧(ROS)产生速率和脂质过氧化程度无显著影响。但经45 ℃高温胁迫12 h后,20 μmol·L -1 CoCl2 与20 μmol·L -1 AVG溶液处理显著提高了上述3种多胺的含量,减缓了抗氧化酶活性的下降,对活性氧水平及脂质过氧化水平的增加也起到了有效的抑制作用,这些改变可能对叶绿素降解的减少及膜稳定指数下降的减轻发挥着重要的作用。可见,通过抑制乙烯产生,相对提高多胺含量和抗氧化酶活性,以及抑制活性氧水平的提高和抑制细胞膜稳定指数的下降,CoCl2和AVG对高温胁迫下的蚕豆幼苗叶片产生了一定的保护作用。
焦健, 李朝周, 黄高宝. 乙烯产生抑制剂对高温胁迫下蚕豆幼苗叶片的保护作用. 植物生态学报, 2006, 30(3): 465-471. DOI: 10.17521/cjpe.2006.0062
JIAO Jian, LI Chao-Zhou, HUANG Gao-Bao. THE PROTECTIVE EFFECTS OF ETHYLENE PRODUCTION INHIBITORS ON VICIA FABA SEEDLING LEAVES UNDER HEAT STRESS. Chinese Journal of Plant Ecology, 2006, 30(3): 465-471. DOI: 10.17521/cjpe.2006.0062
Fig.1 Influences of different concentrations of CoCl2 and aminoethoxyvinyl- glycine (AVG) on the membrane stability index (MSI) of Vicia faba seedlings leaves after 0 and 12 h heat stress of 45 ℃ Different capital letters above the bars indicate significant differences (p<0.05) of different treatments before or after heat stress, different small letters indicate significant differences (p<0.05) of the same treatment before and after heat stress
Fig.2 Influences of 20 μmol·L -1 CoCl2 and 20 μmol·L -1 aminoethoxyvin-ylglycine (AVG) on ethylene production and content of putrescine (Put), spermidine (Spd) and spermine (Spm) in the leaves of Vicia faba seedlings after 0 and 12 h heat stress of 45 ℃ Different capital letters above the bars indicate significant differences (p<0.05) of different treatments before or after heat stress, different small letters indicate significant differences (p<0.05) of the same treatments before and after heat stress
Fig.3 Influences of 20 μmol·L -1 CoCl2 and 20 μmol·L -1 aminoethoxyvin- ylglycine (AVG) on the content of thiobarbituric acid reacting substances (TBARS) and chlorophyll in the leaves of Vicia faba seedlings after 0 and 12 h heat stress of 45 ℃ Different capital letters above the bars indicate significant differences (p<0.05) of different treatments before or after heat stress, different small letters indicate significant differences (p<0.05) of the same treatments before and after heat stress
Fig.4 Influences of 20 μmol·L -1 CoCl2 and 20 μmol·L -1 aminoethoxyvin- ylglycine (AVG) on the production rate of H2O2 and O 2 - · in the leaves of Vicia faba seedlings after 0 and 12 h heat stress of 45 ℃ Different capital letters above the bars indicate significant differences (p<0.05) of different treatments before or after heat stress, different small letters indicate significant differences (p<0.05) of the same treatments before and after heat stress
Fig.5 Influences of 20 μmol·L -1 CoCl2 and 20 μmol·L -1 aminoethoxyvin- ylglycine (AVG) on the activities of superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) in the leaves of Vicia faba seedlings after 0 and 12 h heat stress of 45 ℃ Different capital letters above the bars indicate significant differences (p<0.05) of different treatments before or after heat stress, different small letters indicate significant differences (p<0.05) of the same treatments before and after heat stress
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