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题名: Fungal elicitor Pep-25 increases cytosolic calcium ions, H2O2 production and activates the octadecanoid pathway in Arabidopsis thaliana
作者: null(胡向阳)1; Neill, Stevn J.2; Yang Yongping(杨永平)1; Cai, Weiming3
刊名: PLANTA
关键词: Arabidopsis ; Aequorin ; Cytosolic calcium ions ; Hydrogen peroxide ; Octadecanoid pathway
英文摘要: Transgenic Arabidopsis thaliana plants expressing the protein aequorin were used to investigate the transient change in cytosolic calcium ions caused by stimulation through the fungal elicitor Pep-25. Our results show that the elicitor Pep-25 derived from Phytophthora sojae can induce H2O2 production and an increase in cytosolic calcium ions. The transcription of LOX, OPR3, PED, AOS, AOC genes and the protein accumulation of AOS were induced by Pep-25 treatment. Pep-25 also induced an accumulation of jasmonic acid (JA). Blocking the production of H2O2 and the increase of cytosolic calcium ions both suppressed the transcription of LOX, OPR3, PED, AOS, AOC genes, the accumulation of AOS, and the accumulation of JA. These results indicated that the production of H2O2 derived from the plasma-membrane NADPH oxidase and the subsequently increase of cytosolic calcium ions are both required for the activation of the octadecanoid pathway by Pep-25 treatment in A. thaliana.
中文摘要: Transgenic Arabidopsis thaliana plants expressing the protein aequorin were used to investigate the transient change in cytosolic calcium ions caused by stimulation through the fungal elicitor Pep-25. Our results show that the elicitor Pep-25 derived from Phytophthora sojae can induce H2O2 production and an increase in cytosolic calcium ions. The transcription of LOX, OPR3, PED, AOS, AOC genes and the protein accumulation of AOS were induced by Pep-25 treatment. Pep-25 also induced an accumulation of jasmonic acid (JA). Blocking the production of H2O2 and the increase of cytosolic calcium ions both suppressed the transcription of LOX, OPR3, PED, AOS, AOC genes, the accumulation of AOS, and the accumulation of JA. These results indicated that the production of H2O2 derived from the plasma-membrane NADPH oxidase and the subsequently increase of cytosolic calcium ions are both required for the activation of the octadecanoid pathway by Pep-25 treatment in A. thaliana.
出版日期: 2009-05-01
卷号: 229, 期号:6, 页码:1201-1208
DOI标识: 10.1007/s00425-009-0909-3
语种: 英语
ISSN号: 0032-0935
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内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2651
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, Kunming 650204, Peoples R China
2.Univ W England, Ctr Res Plant Sci, Bristol BS16 1QY, Avon, England
3.Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Plant Physiol & Ecol, Shanghai 2000032, Peoples R China

Recommended Citation:
Hu, XY; Neill, SJ; Yang, YP; Cai, WM.Fungal elicitor Pep-25 increases cytosolic calcium ions, H2O2 production and activates the octadecanoid pathway in Arabidopsis thaliana,PLANTA,2009,229(6):1201-1208
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