摘要
通过室内试验研究比较了具有生物防治能力的5株木霉菌株与2株大豆根腐病病原菌(Fusarium oxysporum、Rhizoctonia solani)对C、P、Fe等营养元素的竞争。试验结果表明病原菌F.oxysporum利用葡萄糖的速度显著的高于所测试的木霉菌株(菌株MM9除外),而木霉菌株MM9、S7、SH7、S2利用葡萄糖的速率显著的高于病原菌R.solani。木霉菌株S7、S2利用可溶性磷的速率显著的高于病原菌F.oxysporum。木霉菌株MM35利用可利用铁的速率显著的高于病原菌(F.oxysporum、R.solani)。木霉菌与大豆根腐病病原菌(F.oxysporum、R.solani)对C、P、Fe营养的竞争呈现多样性。
The role of competition for C, P and Fe on interactions between soybean root rot pathogens （ Fusarium oxysporum, Rhizoctonia solani） and antagonistic Trichoderma spp. was investigated. The test showed that F. oxysporum exhibited a higher rate of using glucose compared tO Trichoderma spp. , the only exception being F. oxysporum compared to Trichoderma MM9, which showed no significant differences. Some strains MM9, S7, SH7, S2 used glucose with higher rate than that of pathogenic fungus R. solani. Strain S7, S2 posed a higher rate of using HPO4^2- compared to pathogenic fungi F. oxysporum. F. oxysporum and R. solani used Fe^2＋ with higher rate than Trichoderma spp.. The trend was reversed for the pairs Trichoderma MM35 -F. oxysporum or Trichoderma MM35 -R. solani. Antagonistic Trichoderma spp. demonstrated diverse abilities to compete for C,P and Fe with soybean root rot pathogens.
出处
《黑龙江大学自然科学学报》
CAS
北大核心
2007年第1期126-129,共4页
Journal of Natural Science of Heilongjiang University
基金
黑龙江省重点基金资助项目(GB01B201)
黑龙江大学青年教师基金项目(QL200445)
关键词
木霉菌
大豆根腐病
机制
竞争
trichoderma spp
root rot of soybean
mechanism
competition
