Studies on the Molecular Mechanism in Life-cycle Development and Signal Trnnsduction of Aphanomyces cochlioides, a Cause of Spinach Root Rot

导致菠菜根腐病的旋状丝丝菌生命周期发育及信号传导的分子机制研究

基本信息

  • 批准号:
    14206013
  • 负责人:
  • 金额:
    $ 28.04万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
  • 财政年份:
    2002
  • 资助国家:
    日本
  • 起止时间:
    2002 至 2004
  • 项目状态:
    已结题

项目摘要

1.The zoospores of phytopathogenic Oomycete, Aphanomyces cochlioides show clear positive chemotaxis to the host-specific singanl substances. The reputed receptor for the host-specific attractant toward the zoospores of spinach root rot pathogen, A.cochlioides wsa surveyed by using a biotin conjugated azidoflavone as a probe and resulted in 40 and 70 kDa membrane proteins on electropholetic gel plates.2.The events caused by signal transduction regarding the life-cycle development of a Peronosporomycete (Oomycete) Aphanonyres cochlioides has been studied by using microscopic techniques. An interesting difference in F-actin profiles was observe between two kinds of custospores, one developing ahead to hyphal germination and the other rejuvenating to regeneration of zoospores.3.About 150 rhizoplane bacteria were isolated from host and non-host plants, and our dual culture bioassay revealed that more than 5 % of isolates caused severe morphological alterations on phytopathogenic Oomycete Aphanomyces cochlioides and the fungal growth was strongly inhibited. From these results, we proposed that this method is new and effective way to find biological control agents against soilbome phytopathogens.4.Cochliophilin A (5-hydroxy-6,7-methylenedioxyflavone) known as the host-specific zoospore attractant for a spinach root rot pathogen has been isolated so far only from Chenopodiaceae plants, spinach, sugar beet, and Chenopodium album, however, in our recent survey of zoospore attractants in Amamthaceae plant, Celosia cristata revealed that one of the active princilpes was indeed cochliophilin A.
1.植物病原卵菌纲丝丝菌的游动孢子对寄主特异性信号物质表现出明显的正趋化性。使用生物素缀合的叠氮黄酮作为探针对菠菜根腐病病原体游动孢子的宿主特异性引诱剂受体进行了调查,并在电泳凝胶板上产生了 40 和 70 kDa 的膜蛋白。 2. 事件通过使用与 Peronosporomycete (Oomycete) Aphanonyres cochlioides 的生命周期发育有关的信号转导引起的显微技术。在两种 custospore 之间观察到 F-肌动蛋白谱的有趣差异,一种提前发育为菌丝萌发,另一种则恢复活力以再生游动孢子。 3.从寄主和非寄主植物中分离出约 150 种根面细菌,我们的双培养生物测定表明,超过 5% 的分离株对植物病原卵菌 Aphanomyces cochlioides 和真菌生长受到强烈抑制。根据这些结果,我们提出该方法是寻找针对土生植物病原体的生物防治剂的新且有效的方法。4.Cochliophilin A(5-羟基-6,7-亚甲二氧基黄酮)被称为菠菜根的宿主特异性游动孢子引诱剂迄今为止,仅从藜科植物、菠菜、甜菜和藜中分离出腐烂病原体,然而,在我们最近对植物中游动孢子引诱剂的调查中苋科植物鸡冠花 (Celosia cristata) 揭示了其活性原理之一确实是亲cochliophilin A。

项目成果

期刊论文数量(10)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Quantification of Particle Method for Chemotactic Bioassay Using Peronosporomycete Zoospores.
使用霜霉病游动孢子进行趋化生物测定的颗粒法定量。
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    T.Takayama;Y.Fukushi;Md.T.Islam;S.Tahara
  • 通讯作者:
    S.Tahara
New Discoveries in Agrochemicals (ACS Symposium Series, 892, Chap.19: 202-215)
农用化学品的新发现(ACS 研讨会系列,892,第 19 章:202-215)
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    S.Tahara;Md.T.Islam
  • 通讯作者:
    Md.T.Islam
Hiroshi Ishimoto, Yukiharu Fukushi, Satoshi Tahara: "Non-pathogenic Fusarium strains protect the seedlings of Lepidium sativum from Pythium ultimum"Soil Biology and Biochemistry. (in press). (2004)
Hiroshi Ishimoto、Yukiharu Fukushi、Satoshi Tahara:“非致病性镰刀菌菌株保护 Lepidium sativum 幼苗免受终极腐霉侵害”土壤生物学和生物化学。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
A Phtotoaffinity Probe Designed for Host-Specific Signal Flavonoid Receptors in Phytopathogenic Peronosporomycete Zoospores of Aphanomyces cochlioides.
专为植物病原性霜霉菌游动孢子中的寄主特异性信号类黄酮受体设计的光亲和探针。
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Yasuko Sakihama;Takashi Shimai;Mitsuyoshi Sakasai;Toshiaki Ito;Yukiharu Fukushi;Yasuyuki Hashidoko;Satoshi Tahara
  • 通讯作者:
    Satoshi Tahara
A Photoaffinity Probe Desighned for Host-Sprecific Signal Flavonoid Receptors in Phytopathogenic Peronosporomycete Aphanomyces cochlioides.
专为植物病原性霜霉病 Aphanomyces cochlioides 中宿主特异性信号黄酮类受体设计的光亲和探针。
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Y.Sakihama;T.Shimai;M.Sakasai;T.Ito;Y.Fukushi;Y.Hashidoko;S.Tahara
  • 通讯作者:
    S.Tahara
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TAHARA Satoshi其他文献

TAHARA Satoshi的其他文献

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{{ truncateString('TAHARA Satoshi', 18)}}的其他基金

Studies on the Properties and Bio-Functions of Prenyl Epoxidase
异戊二烯环氧酶的性质及生物功能研究
  • 批准号:
    09660109
  • 财政年份:
    1997
  • 资助金额:
    $ 28.04万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Studies on Dynamic and Functional Aspects of Plant Ecochemicals
植物生态化学物质的动态和功能方面的研究
  • 批准号:
    06404011
  • 财政年份:
    1994
  • 资助金额:
    $ 28.04万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Studies on the Interaction between Plant Secondary Metabolites and Xenobiotics
植物次生代谢产物与外源物质相互作用的研究
  • 批准号:
    02454064
  • 财政年份:
    1990
  • 资助金额:
    $ 28.04万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
Studies on Fungal Metabolism of Phytoalexins
植物抗毒素的真菌代谢研究
  • 批准号:
    63560116
  • 财政年份:
    1988
  • 资助金额:
    $ 28.04万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Biochemical Studies on Relationships between Plant Fungitoxins and Phytopathogens
植物真菌毒素与植物病原体关系的生化研究
  • 批准号:
    61560130
  • 财政年份:
    1986
  • 资助金额:
    $ 28.04万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
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