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	The cascade mechanisms of nitric oxide as a second messenger of ultraviolet B in inhibiting mesocotyl elongations
	Zhang, MX; An, LZ; Feng, HY; Chen, T; Chen, K; Liu, YH; Tang, HG; Chang, JF; Wang, XL
刊名	PHOTOCHEMISTRY AND PHOTOBIOLOGY
	2003-02-01
卷号	77期号:2页码:219-225
ISSN号	0031-8655
通讯作者	An, LZ()
英文摘要	In this report, a number of physiological aspects was examined during developmental growth of maize seedling's mesocotyl. It was found that ultraviolet B (UVB) radiation was able to significantly induce nitric oxide synthase (NOS) activities and speedup the release of apparent nitric oxide (NO) of mesocotyl and that exogenous NO donor's rhizospheric treatments may mimic the responses of the mesocotyl to UVB radiation, such as the inhibition of mesocotyl elongation, the decrease in exo-and endoglucanase activities and the increase in protein content of cell wall of mesocotyl. When the seedlings were treated with N-nitro-L-arginine, an inhibitor of NOS, the mesocotyl elongation was promoted, the exo- and endoglucanase activities were raised and the protein content was reduced. However, under UVB radiation, the effects of exogenous NO on several physiological aspects of mesocotyll were similar to those of exogenous reactive oxygen species (ROS) eliminator, N-acetyl-cysteine. All the physiological changes were associated with either the exogenous NO supply or the activities of NOS in plant. Accordingly, it is assumed that reduction in mesocotyl length caused by UVB radiation was possibly achieved through modification of the chemical properties of the cell wall polysaccharides, which was induced by NO and ROS synergically mediated changes in exo- and endo-beta-D-glucanases activities in cell walls, and NO was one of the main signaling molecule of UVB radiation in inhibiting mesocotyl elongations. So NO might function as both a second messenger and an antioxidant of UVB radiation during developmental growth of the mesocotyl.
收录类别	SCI
WOS关键词	HYPOCOTYL ELONGATION ; CELL-WALLS ; UV-B ; PLANTS ; GROWTH ; RADIATION ; RESPONSES ; SYNTHASE ; STRESS ; LOCALIZATION
WOS研究方向	Biochemistry & Molecular Biology ; Biophysics
WOS类目	Biochemistry & Molecular Biology ; Biophysics
语种	英语
出版者	AMER SOC PHOTOBIOLOGY
WOS记录号	WOS:000180924200015
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556886
专题	寒区旱区环境与工程研究所
通讯作者	An, LZ
作者单位	1.Lanzhou Univ, Sch Life Sci, State Key Lab Arid Agroecol, Lanzhou 730000, Peoples R China 2.Lanzhou Petrochem Coll Technol, Lanzhou, Peoples R China 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhang, MX,An, LZ,Feng, HY,et al. The cascade mechanisms of nitric oxide as a second messenger of ultraviolet B in inhibiting mesocotyl elongations[J]. PHOTOCHEMISTRY AND PHOTOBIOLOGY,2003,77(2):219-225.
APA	Zhang, MX.,An, LZ.,Feng, HY.,Chen, T.,Chen, K.,...&Wang, XL.(2003).The cascade mechanisms of nitric oxide as a second messenger of ultraviolet B in inhibiting mesocotyl elongations.PHOTOCHEMISTRY AND PHOTOBIOLOGY,77(2),219-225.
MLA	Zhang, MX,et al."The cascade mechanisms of nitric oxide as a second messenger of ultraviolet B in inhibiting mesocotyl elongations".PHOTOCHEMISTRY AND PHOTOBIOLOGY 77.2(2003):219-225.

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