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题名: Putrescine protects hulless barley from damage due to UV-B stress via H2S- and H2O2-mediated signaling pathways
作者: Li, Q; Wang, ZF; Zhao, YN; Zhang, XC; Zhang, SJ; Bo, LT; Wang, Y; Ding, YF; An, LZ(安黎哲)
收录类别: SCIE ; PubMed ; MEDLINE ; BIOSIS
出版日期: 2016-05
刊名: PLANT CELL REPORTS
卷号: 35, 期号:5, 页码:1155-1168
出版者: SPRINGER
出版地: NEW YORK
英文摘要: In hulless barley, H (2) S mediated increases in H (2) O (2) induced by putrescine, and their interaction enhanced tolerance to UV-B by maintaining redox homeostasis and promoting the accumulation of UV-absorbing compounds. This study investigated the possible relationship between putrescence (Put), hydrogen sulfide (H2S) and hydrogen peroxide (H2O2) as well as the underlying mechanism of their interaction in reducing UV-B induced damage. UV-B radiation increased electrolyte leakage (EL) and the levels of malondialdehyde (MDA) and UV-absorbing compounds but reduced antioxidant enzyme activities and glutathione (GSH) and ascorbic acid (AsA) contents. Exogenous application of Put, H2S or H2O2 reduced some of the above-mentioned negative effects, but were enhanced by the addition of Put, H2S and H2O2 inhibitors. Moreover, the protective effect of Put against UV-B radiation-induced damage to hulless barley was diminished by dl-propargylglycine (PAG, a H2S biosynthesis inhibitor), hydroxylamine (HT, a H2S scavenger), diphenylene iodonium (DPI, a PM-NADPH oxidase inhibitor) and dimethylthiourea (DMTU, a ROS scavenger), and the effect of Put on H2O2 accumulation was abolished by HT. Taken together, as the downstream component of the Put signaling pathway, H2S mediated H2O2 accumulation, and H2O2 induced the accumulation of UV-absorbing compounds and maintained redox homeostasis under UV-B stress, thereby increasing the tolerance of hulless barley seedlings to UV-B stress.
关键词: Putrescine ; Hydrogen sulfide ; Hydrogen peroxide ; Hulless barley ; Oxidative stress ; Redox homeostasis ; UV-absorbing compounds
作者部门: [Li, Qien ; Zhang, Xiaochen ; Zhang, Shuaijun ; Bo, Letao ; Wang, Yao ; Ding, Yingfeng ; An, Lizhe] Lanzhou Univ, Sch Life Sci, Lanzhou 730000, Gansu, Peoples R China ; [Li, Qien] Tibetan Tradit Med Hosp Lhari, 18 South Renmin Rd, Lhari 852000, Nagchu, Peoples R China ; [Wang, Zhaofeng] Northwest Normal Univ, Life Sci Coll, Lanzhou 730070, Gansu, Peoples R China ; [Zhao, Yanning] Qinghai Univ, Dept Biol, 97 Ningzhang Rd, Xining 810016, Peoples R China
通讯作者: An, LZ (reprint author), Lanzhou Univ, Sch Life Sci, Lanzhou 730000, Gansu, Peoples R China.
学科分类: Plant Sciences
文章类型: Article
所属项目编号: Key Program of the National Natural Science Foundation of China [31230014] ; key program of Tibetan Natural Science Foundation [XZZRJJ-ZD-2013]
所属项目名称: 国家自然科学基金项目
项目资助者: NSFC
语种: 英语
DOI: 10.1007/s00299-016-1952-8
ISSN号: 0721-7714
WOS记录号: WOS:000374377300014
PM记录号: 26910861
BIOSIS记录号: BCI:BCI201600441196
IR记录号: WOS:000374377300014
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/182007
Appears in Collections:生命科学学院_期刊论文

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Recommended Citation:
Li, Q,Wang, ZF,Zhao, YN,et al. Putrescine protects hulless barley from damage due to UV-B stress via H2S- and H2O2-mediated signaling pathways[J]. PLANT CELL REPORTS,2016,35(5):1155-1168.
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