DIVERSE MODES OF ACTION OF BIOTIC AND ABIOTIC PHYTOALEXIN ELICITORS
DIVERSE MODES OF ACTION OF BIOTIC AND ABIOTIC PHYTOALEXIN ELICITORS
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DOI：
10.1038/275546a0
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发表时间：
1978-01-01
期刊：
影响因子：
64.8
通讯作者：
YOSHIKAWA, M
中科院分区：
文献类型：
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作者：
YOSHIKAWA, M
植物抗毒素是一种可诱导形成的高等植物代谢产物，对某些潜在的植物病原体具有抗生素作用。至少有75种植物代表20科已被证明积累植物抗毒素响应感染1 -3。植物抗毒素也在植物中积累，以响应称为激发子的各种试剂1，包括病原体来源的物质（生物激发子）和非生物激发子，如重金属盐和洗涤剂1 -3。激发子可用于研究植物抗毒素产生或抗病性表达的分子基础1。然而，这些不同的激发子分子诱导植物中植保素积累的机制尚不清楚。我发现大豆[Glycine max（L.）Merr.]下胚轴对真菌病原体Phytophthora megaspermavar. sojaeA. A. Hildb.，受诱导的生物合成和组成性降解活性的相对速率调节。本文报道了各种生物和非生物诱导子对大豆组织中大豆抗毒素生物合成和降解的影响。
PHYTOALEXINS are inducibly formed higher plant metabolites that are antibiotic to certain potential plant pathogens1. At least 75 plant species representing 20 families have been shown to accumulate phytoalexins in response to infection1–3. Phytoalexins also accumulate in plants in response to various agents termed elicitors1, including substances of pathogen origin (biotic elicitors) and abiotic elicitors such as heavy metal salts and detergents1–3. Elicitors may be useful for investigation of the molecular basis of phytoalexin production or disease resistance expression1. However, the mechanisms by which such diverse elicitor molecules induce phytoalexin accumulation in plants are unknown. I have found4that levels of glyceollin, a phytoalexin produced by soybean [Glycine max(L.) Merr.] hypocotyls in response to infection with the fungal pathogenPhytophthora megaspermavar.sojaeA. A. Hildb., are regulated by relative rates of induced biosynthesis and constitutive degrading activity. I report here the effects of various biotic and abiotic elicitors on biosynthesis and degradation of glyceollin in soybean tissues.