PSEUDOMONAS SIDEROPHORES - A MECHANISM EXPLAINING DISEASE-SUPPRESSIVE SOILS
PSEUDOMONAS SIDEROPHORES - A MECHANISM EXPLAINING DISEASE-SUPPRESSIVE SOILS
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DOI：
10.1007/bf02602840
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发表时间：
1980-01-01
影响因子：
2.6
通讯作者：
SCHROTH, MN
中科院分区：
文献类型：
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作者：
KLOEPPER, JW;LEONG, J;SCHROTH, MN
将荧光假单胞菌菌株 B10（从全食抑制土壤中分离出来）或其铁载体假杆菌素添加到接种了尖孢镰刀菌的枯萎病和全食有益土壤中。 sp.liniorGaeumannomyces graminisvar.tritici 分别使它们具有疾病抑制作用。我们的研究结果表明，疾病抑制部分是由微生物铁载体引起的，铁载体有效地络合土壤中的铁（III），使其无法被病原体利用，从而抑制其生长。外源铁（III）对抑制疾病的土壤的修正可能是通过抑制铁载体的产生而将其转变为导电土壤。
The addition of either fluorescentPseudomonasstrain B10, isolated from a take-all suppressive soil, or its siderophore, pseudobactin, to bothFusarium-wilt and take-all conducive soils inoculated withFusarium oxysporumf. sp.liniorGaeumannomyces graminisvar.tritici, respectively, rendered them disease suppressive. Our findings suggest that disease suppressiveness is caused in part by microbial siderophores which efficiently complex iron(III) in soils, making it unavailable to pathogens, thus inhibiting their growth. Amendment of exogenous iron(III) to disease-suppressive soils converted them to conductive soils presumably by repressing siderophore production.