[1]刘玉莲,左存武,车飞,等. 日灼后苹果果皮保护机制研究[J].西北林学院学报,2017,32(6):18-24.[doi:10.3969/j.issn.1001-7461.2017.06.03]
 LIU Yu-lian,ZUO Cun-wu,CHE Fei,et al. Defense Mechanism of Sunburn for Apple Peel[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2017,32(6):18-24.[doi:10.3969/j.issn.1001-7461.2017.06.03]
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 日灼后苹果果皮保护机制研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第32卷
期数:
2017年第6期
页码:
18-24
栏目:
出版日期:
2017-11-30

文章信息/Info

Title:
 Defense Mechanism of Sunburn for Apple Peel
文章编号:
1001-7461(2017)06-0018-06
作者:
 刘玉莲1左存武1车飞2吴玉霞1陈年来3陈佰鸿1*
 (1.甘肃农业大学 园艺学院,甘肃 兰州 730070;2.四川省开江中学,四川 达州 636250;3.甘肃农业大学 资源与环境学院,甘肃 兰州 730070)
Author(s):
 LIU Yu-lian1ZUO Cun-wu1CHE Fei2WU Yu-xia1CHEN Nian-lai3*CHEN Bai-hong1*
 (1.College of Horticulture,Gansu Agricultural University,Lanzhou,Gansu 730070,China; 2.Sichuan Kaijiang Middle School,Dazhou,Sichuan 636250,China; 3.College of Resource and Environmental Engineering,Gansu Agricultural University,Langzhou,Gansu 730070,China)
关键词:
 苹果果皮日灼保护机制
Keywords:
 apple peel sunburn defense mechanism
分类号:
S718.512
DOI:
10.3969/j.issn.1001-7461.2017.06.03
文献标志码:
A
摘要:
 以红富士苹果为试材,研究苹果果实日灼后色素、多酚、类黄酮、可溶性糖、脯氨酸和相对电导率等指标的变化。结果表明,日灼后,果皮主要色素花青苷和叶绿素被高温和强光破坏,主要通过提高上游基因MdPSY、MdPDS的表达量来促进类胡萝卜素含量升高,并通过多酚向醌类物质的转化以保护果皮免受强光的胁迫。在果皮白化时,相对电导率和MDA无显著变化,但O-2在果皮白化时开始大量积累,从而诱发体内活性氧清除酶SOD、POD、CAT活性显著升高,以及AsA和GSH含量增加,以清除过多的活性氧,减轻对细胞的伤害作用;在果皮褐化时,胁迫程度加重,相对电导率、MDA和O-2显著升高,SOD、POD和CAT活性显著降低,且AsA和GSH的含量下降。说明果皮白化时期,细胞膜尚未受到损伤,保护酶活性较高,保护物质含量升高,保护系统处于活跃状态,为日灼防治的关键时期。
Abstract:
 Using the apples of cultivar Fuji as materials,the changes of some physiological and biochemical indicators,such as pigments,polyphenols,flavonoids,soluble sugar,proline,relative conductivity,MDA,superoxide anion free radical,protective enzymes and AsA-GSH were analyzed in two types of sunburned apple fruits.After sunburn,the contents of chlorophyll and anthocyanin decreased,the carotenoid and polyphenols contents increased,and the expression levels of MdPSY and MdPDS increased greatly.On the stage of peel whitening,in order to protect the cytomembrane from the damage by superoxide anion free radical,the activities of SOD,POD and CAT,the contents of AsA and GSH content increased,while in the stage of peel browning,indicators mentioned above decreased.It was concluded that during the stage of peel whitening,cytomembrane was intact and protective enzymes activity and some protective substance contents were higher,so peel whitening was the crucial stage for prevention and control apple sunburn.

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备注/Memo

备注/Memo:
 收稿日期:2017-04-03修回日期:2017-06-19
基金项目:博士后科学基金(2014RCJF008);甘肃省农牧厅科技攻关项目(GPCK2013-2)。
作者简介:刘玉莲,女,讲师,研究方向:苹果遗传育种和品质改良。E-mail:yulianliu@126.com
*通信作者:陈佰鸿,男,教授,研究方向:果树生理与生物技术。E-mail:bhch@gsau.edu.cn
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