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题名: Hydrogen peroxide involvement in formation and development of adventitious roots in cucumber
作者: Li, SW; Xue, LG; Xu, SJ; Feng, HY(冯虎元); An, LZ(安黎哲)
收录类别: SCIE ; EI ; BIOSIS
出版日期: 2007-06
刊名: PLANT GROWTH REGULATION
卷号: 52, 期号:2, 页码:173-180
出版者: SPRINGER
出版地: DORDRECHT
英文摘要: Hydrogen peroxide (H2O2), an active oxygen species, is widely generated in many biological systems. The present study demonstrates that H2O2 was generated in seedling explants after the primary roots were removed, and it mediates the auxin response prior to adventitious root formation in cucumber (Cucumis sativus L. Ganfeng 8). When compared with the controls, treatment of cucumber seedling explants after primary roots removal with either 20-40 mM H2O2 or 10 mu M IAA significantly increased the number of adventitious roots, and treatment with 10-50 mM H2O2 significantly increased the fresh weight of adventitious roots. The effects of H2O2 on promoting the formation and growth of adventitious roots were eliminated by 2 mM ascorbic acid, 100 U CAT or 1 mu M DPI, and the effects of IAA were eliminated by 4 mM ascorbic acid, 100 U CAT or 5 mu M DPI. Treatment with either 4 mM ascorbic acid or 1-5 mu M DPI inhibited the formation and growth of adventitious roots, and these inhibitory effects were partly reversed by exogenous H2O2.Furthermore, a higher concentration of endogenous H2O2 was detected in seedling explants 3 h after the primary roots were removed. However, in 10 mu M DPI-treated seedling explants, the concentration of endogenous H2O2 was markedly reduced by DPI. Results obtained suggest that H2O2 may function as a signaling molecule, involved in the formation and development of adventitious roots in cucumber.
关键词: hydrogen peroxide ; signaling ; adventitious roots ; cucumber ; Cucumis sativus L
作者部门: Lanzhou Univ, Key Lab Arid & Grassland Ecol, Minist Educ, Sch Life Sci, Lanzhou 730000, Gansu, Peoples R China ; Lanzhou Jiaotong Univ, Sch Chem & Biol Engn, Lanzhou 730070, Gansu, Peoples R China
通讯作者: Feng, HY (reprint author), Lanzhou Univ, Key Lab Arid & Grassland Ecol, Minist Educ, Sch Life Sci, 222 Tianshui S Rd, Lanzhou 730000, Gansu, Peoples R China.
学科分类: Plant Sciences
文章类型: Article
语种: 英语
DOI: 10.1007/s10725-007-9188-9
ISSN号: 0167-6903
WOS记录号: WOS:000247259500008
EI记录号: 20072610670436
BIOSIS记录号: BIOSIS:PREV200700455176
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/114478
Appears in Collections:生命科学学院_期刊论文

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Recommended Citation:
Li, SW,Xue, LG,Xu, SJ,et al. Hydrogen peroxide involvement in formation and development of adventitious roots in cucumber[J]. PLANT GROWTH REGULATION,2007,52(2):173-180.
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