[1]刘莹,万丽嫱,海梅荣.外源褪黑素对UV-B辐射下马铃薯苗期叶片抗氧化物和过氧化氢的影响[J].江苏农业科学,2023,51(9):60-67.
 Liu Ying,et al.Effects of exogenous melatonin on leaf antioxidant and hydrogen peroxide in potato seedlings under UV-B radiation[J].Jiangsu Agricultural Sciences,2023,51(9):60-67.
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外源褪黑素对UV-B辐射下马铃薯苗期叶片抗氧化物和过氧化氢的影响()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第51卷
期数:
2023年第9期
页码:
60-67
栏目:
遗传育种与耕作栽培
出版日期:
2023-05-05

文章信息/Info

Title:
Effects of exogenous melatonin on leaf antioxidant and hydrogen peroxide in potato seedlings under UV-B radiation
作者:
刘莹万丽嫱海梅荣
云南农业大学农学与生物技术学院/西南中药材种质创新与利用国家地方联合工程研究中心,云南昆明 650201
Author(s):
Liu Yinget al
关键词:
马铃薯UV-B辐射褪黑素抗氧化物过氧化氢
Keywords:
-
分类号:
S532.01
DOI:
-
文献标志码:
A
摘要:
UV-B辐射会对植物造成伤害,降低作物的产量和品质,褪黑素可以增强植物的抗逆性。为明确褪黑素在UV-B辐射下对马铃薯的影响,试验共设置4个辐射强度[太阳光自然照射及2.5、5.0、7.5 kJ/(m2·d),分别记为CK、B1、B2、B3]以及6个褪黑素浓度(0、25、50、100、150、200 μmol/L),选用马铃薯品种合作88,进行为期15 d的处理。研究发现:UV-B辐射增强后,马铃薯植株高度降低,进行褪黑素处理后有所提高,提高幅度最大为7.65%,即B3条件下,施加100 μmol/L的褪黑素。施加褪黑素后可以在一定范围内进一步升高抗坏血酸(AsA)的含量,升高幅度最大约为成倍增加,即在B1条件下施加25 μmol/L褪黑素。施加褪黑素后也可以在一定范围内进一步升高谷胱甘肽(GSH)的含量,升高程度可达30.43%,即在B1条件下,施加50 μmol/L褪黑素。随着辐射的增强,类黄酮含量呈上升趋势,在B3条件下,类黄酮含量最高,与在CK条件下各褪黑素浓度相比分别增加61.41%、63.44%、64.86%、6486%、65.78%、65.78%。在一定范围内,褪黑素能使脯氨酸(Pro)含量进一步升高,升高程度可达13.93%,即在B3条件下,施加100 μmol/L褪黑素。施加褪黑素,在一定的范围内可以使H2O2含量降低,降低的最大幅度为1806%,即在B2条件下施加50 μmol/L的褪黑素。褪黑素可促进抗坏血酸、谷胱甘肽和类黄酮等抗氧化物质含量增加,说明褪黑素可以保护细胞膜免受损伤,提高马铃薯植株的抗氧化能力,同时外源褪黑素可以增加内源褪黑素的含量。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2022-07-18
基金项目:科研发展基金(编号:KX900078000)。
作者简介:刘莹(1999—),女,新疆喀什人,硕士研究生,主要从事作物生理生态与产量品质形成研究。E-mail:1430441802@qq.com。
通信作者:海梅荣,博士,教授,硕士生导师,主要从事作物生产生理研究。E-mail:2250029499@qq.com。
更新日期/Last Update: 2023-05-05