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首页> 外文期刊>Plant and Soil >Influence of the mycorrhizal fungus, Glomus coronatum, and soil phosphorus on infection and disease caused by binucleate Rhizoctonia and Rhizoctonia solani on mung bean (Vigna radiata)
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Influence of the mycorrhizal fungus, Glomus coronatum, and soil phosphorus on infection and disease caused by binucleate Rhizoctonia and Rhizoctonia solani on mung bean (Vigna radiata)

机译：菌根真菌，冠状glomus和土壤磷素对绿豆（Vigna radiata）的双核根瘤菌和茄状根瘤菌引起的感染和疾病的影响

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摘要

Root-infecting fungal pathogens and also parasites, which do not cause major disease symptoms cause problems of contamination in pot cultures of arbuscular mycorrhizal (AM) fungi. We investigated the effect of the AM fungus, Glomus coronatum Giovannetti on disease caused by binucleate Rhizoctonia sp. (BNR) and R. solani in mung bean in the absence (P0) and presence (P1) of added soil phosphorus (P). When G. coronatum and BNR or R. solani were inoculated at the same time, G. coronation improved the growth of the plants and reduced colonization of roots by BNR, but not by R. solani. R. solani reduced the growth of non-mycorrhizal mung bean in P0 soil 6 weeks after inoculation, whereas BNR had no effect on growth. G. coronatum reduced the severity of disease caused by BNR or R. solani on mung bean in both soil P treatments. When G. coronatum was established in the roots 3 weeks before BNR or R. solani was added to the potting mix, there was no significant effect of BNR or R. solani on growth of mung bean. Prior colonization by G. coronatum slightly reduced indices of disease caused by BNR or R. solani. In both experiments, addition of P stimulated plant growth and reduced the colonization of roots by BNR, but had little effect on disease severity. We conclude that the reduction of the effect of BNR or R. solani on mung bean could not be explained by improved P nutrition, but could be attributed to the presence of G. coronatum within and among the roots.
机译：不会引起主要疾病症状的感染根的真菌病原体以及寄生虫会引起丛枝菌根（AM）真菌盆栽培养中的污染问题。我们调查了AM真菌Glomus coronatum Giovannetti对双核Rhizoctonia sp。引起的疾病的影响。缺少（P0）和存在（P1）添加的土壤磷（P）的情况下，绿豆中的（BNR）和solani茄。当同时接种冠冕菌和BNR或sol。R. solani时，冠状菌通过BNR而不是sol。Rani改善植物的生长并减少根部定植。接种R. solani会降低接种后6周的P0土壤中非菌根绿豆的生长，而BNR对生长没有影响。在两种土壤磷肥处理中，冠心农杆菌均降低了由BNR或茄绿假单胞菌对绿豆造成的疾病的严重程度。当在将BNR或sol。R. solani加入盆栽混合物之前3周，在根中建立了冠脉G.时，BNR或sol。R. ani对绿豆的生长没有显着影响。事先由冠状杆菌定居会略微降低由BNR或茄状痢疾杆菌引起的疾病指数。在两个实验中，添加P刺激植物生长并减少BNR引起的根部定植，但对病害严重程度的影响很小。我们得出结论，不能通过改善P营养来解释BNR或sol。R. solani对绿豆的影响降低，但可以归因于根内和根之间存在冠状冠心病。

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