脱落酸和赤霉素对木枣果实成熟衰老和生理特性的影响  

Effect of Abscisic Acid and Gibberellin on Ripening, Senescence,and Physiological Characteristics in the Jujube Fruit

作　　者：杨卫民[1] 杜京旗[1] 赵君[1] 

机构地区：[1]吕梁学院生命科学系,中国山西吕梁033001

出　　处：《生命科学研究》2015年第5期381-385,共5页Life Science Research

基　　金：山西省自然科学基金项目(2013011029-1);吕梁学院自然科学校内基金项目(ZRXN201203)

摘　　要：用不同浓度的外源激素脱落酸(abscisic acid,ABA)和赤霉素(gibberellic,GA3)分别处理木枣果实,研究外源ABA和GA3对木枣果实成熟衰老的影响。结果表明,枣果组织中,随着ABA处理浓度的增加,丙二醛(malondialdehyde,MDA)含量呈先升高后降低的趋势,而GA3处理则变化趋势相反;脯氨酸(Proline)含量随着ABA浓度的增加呈先缓慢升高后降低的趋势,而随GA3处理浓度增加呈直线下降趋势;维生素C(Vit C)含量随着ABA浓度的增加呈先急剧升高后快速降低的趋势,而GA3处理则呈相反趋势;过氧化氢酶(catalase,CAT)活性随着ABA浓度的增加呈先降低后升高的趋势,GA3处理则保持了较低水平状态。表明ABA与GA3作为信号分子对木枣果实成熟衰老的影响较为明显,其生理作用在多方面表现为相互制约或互为拮抗特征。Mu jujube fruit were treated respectively using different concentrations of exogenous abscisic acid （ABA） and gibberellic （GA3）, effects of exogenous ABA and GA3 on ripening and senescence in jujube fruit were studied. The results show that, with the increase of ABA concentration, the content of malondialdehyde （MDA） was increased firstly and then decreased in the tissue of jujube, while GA3 treatment the opposite trend; the content of Proline was first increased and then decreased slowly with the increase of ABA con- centration, while was decreased linearly with the increase of the GA3 concentration; the content of vitamin C （VitC） was first increase rapidly and then decreased sharply with the increase of ABA concentration, while GA3 treatment the opposite trend; the eatalase （CAT） activity was decreased first and then increased with the increase of ABA concentration, GA3 treatment has maintained a relatively low level. Showed that, ABA and GA3 as signaling molecules or exogenous hormone, effects on ripening and senescence is obvious in jujube fruit, and their physiological functions were restricted or antagonistic to each other.

关 键 词：木枣 脱落酸(ABA)和赤霉素(GA3) 成熟衰老 生理特征 拮抗作用 

分 类 号：Q255[生物学—细胞生物学]