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题名: N-3-Oxo-Decanoyl-L-Homoserine-Lactone Activates Auxin-Induced Adventitious Root Formation via Hydrogen Peroxide- and Nitric Oxide-Dependent Cyclic GMP Signaling in Mung Bean
作者: Bai, Xuegui1; Todd, Christopher D.2; Desikan, Radhika3; Yang Yongping(杨永平)1; Hu, Xiangyang1
刊名: PLANT PHYSIOLOGY
关键词: SCHIZANDRA-CHINENSIS BAILL ; SCHISANDRA-CHINENSIS ; INDUCED TOXICITY ; CELLS ; CONSTITUENTS ; PHILIPPINENSIS ; PROTECTS
英文摘要: N-Acyl-homoserine-lactones (AHLs) are bacterial quorum-sensing signaling molecules that regulate population density. Recent evidence demonstrates their roles in plant defense responses and root development. Hydrogen peroxide (H2O2), nitric oxide (NO), and cyclic GMP (cGMP) are essential messengers that participate in various plant physiological processes, but how these messengers modulate the plant response to N-acyl-homoserine-lactone signals remains poorly understood. Here, we show that the N-3-oxo-decanoyl-homoserine-lactone (3-O-C10-HL), in contrast to its analog with an unsubstituted branch chain at the C3 position, efficiently stimulated the formation of adventitious roots and the expression of auxin-response genes in explants of mung bean (Vigna radiata) seedlings. This response was mimicked by the exogenous application of auxin, H2O2, NO, or cGMP homologs but suppressed by treatment with scavengers or inhibitors of H2O2, NO, or cGMP metabolism. The 3-O-C10-HL treatment enhanced auxin basipetal transport; this effect could be reversed by treatment with H2O2 or NO scavengers but not by inhibitors of cGMP synthesis. Inhibiting 3-O-C10-HL-induced H2O2 or NO accumulation impaired auxin-or 3-O-C10-HL-induced cGMP synthesis; however, blocking cGMP synthesis did not affect auxin-or 3-O-C10-HL-induced H2O2 or NO generation. Additionally, cGMP partially rescued the inhibitory effect of H2O2 or NO scavengers on 3-OC10-HL-induced adventitious root development and auxin-response gene expression. These results suggest that 3-O-C10-HL, unlike its analog with an unmodified branch chain at the C3 position, can accelerate auxin-dependent adventitious root formation, possibly via H2O2- and NO-dependent cGMP signaling in mung bean seedlings.
出版日期: 2012-02-01
卷号: 158, 期号:2, 页码:725-736
DOI标识: 10.1104/pp.111.185769
语种: 英语
ISSN号: 0032-0889
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/10341
Appears in Collections:中国科学院青藏高原研究所昆明部_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibet Plateau Res Kunming, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Peoples R China
2.Univ Saskatchewan, Dept Biol, Saskatoon, SK S7N 5E2, Canada
3.Univ London Imperial Coll Sci Technol & Med, Dept Life Sci, London SW7 2AZ, England

Recommended Citation:
Bai, XG; Todd, CD; Desikan, R; Yang, YP; Hu, XY.N-3-Oxo-Decanoyl-L-Homoserine-Lactone Activates Auxin-Induced Adventitious Root Formation via Hydrogen Peroxide- and Nitric Oxide-Dependent Cyclic GMP Signaling in Mung Bean,PLANT PHYSIOLOGY,2012,158(2):725-736
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