Interaction of vesicular arbuscular mycorrhiza with root knot nematodes in tomato
ABSTRACT The interaction between the VA mycorrhizal fungus,Glomus fasciculatus and the root-knot nematodes,Meloidogyne incognita andM. javanica, and their effects on the growth and phosphorus nutrition of tomato was studied in a red sandy loam soil of pH 6.0. Inoculation of tomato roots with root-knot nematodes enhanced infection and spore production byG. fasciculatus. Inoculation of tomato plants withG. fasciculatus significantly reduced the number and size of the root-knot galls produced byM. incognita andM. javanica. Inoculation withG. fasciculatus although improved plant growth and its total phosphorus content compared to the uninoculated plants, the difference were not statistically significant.
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ABSTRACT: The comparative efficacy of locally available systemic nematicides with VAM fungi was evaluated against Heterodera avenae infecting Triticum aestivum, L. var.wh-147 under pot trials. An experiment was set up with nematicides like Carbofuran, Aldicarb, Phorate and Rugby along with urea application on wheat. Glomus fasciculatum, Glomus mosseae, Gigaspora gigantea and Gigaspora margarita were applied in 4 g dosage to the treated plants, individually and in combination. Finding of this study established that Glomus species, Carbofuran and Phorate were more potent and compatible to mitigate the nematode infection as well as endomycorrhizae enhanced wheat growth and grain yield.International Journal of Bio-Technology and Research (IJBTR). 03/2013; 3(1):11-16.
Chapter: Endophytic Fungi[show abstract] [hide abstract]
ABSTRACT: Endophytic fungi as well as plant-parasitic nematodes probably coevolved with all plant life on earth including cultivated crop plants. While endophytic fungi often form mutualisitc associations to the benefit of the plant, plant-parasitic nematodes can cause detrimental yield losses. Although both groups of organisms interact very closely within the plant tissue, the potential role of endophytic fungi in nematode control was long overseen. Only recently has research on the interrelationships between endophytic fungi and plant-parasitic nematodes gained the interest of science working in plant protection. Numerous non-pathogenic endophytic fungi have been isolated from agronomic crops such as tomato and banana and have shown antagonistic potential towards a diverse spectrum of plant-parasitic nematodes. This chapter reviews the research that has been conducted on the use of endophytic fungi to control plant-parasitic nematodes. The chapter concentrates on several important groups of mutualistic endophytic fungi, in particular the endomycorrhizal fungi, Piriformospora indica, grass endophytes and Fusarium endophytes. Their biological control potential is presented and possible mode-of-actions are discussed. The review is meant to further stimulate research in this fascinating area and to provide a road map for practical application of endophytic fungi for the integrated management of plant-parasitic nematodes in the near future.06/2011: pages 227-258;
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ABSTRACT: The effects of root-associated fungi (Aspergillus awamori and Glomus mosseae) and plant growth promoting rhizobacteria (PGPR) (Pseudomonas putida, Pseudomonas alcaligenes and Paenibacillus polymyxa) were studied alone and in combination in glasshouse experiments on the growth of pea, enzyme activity (peroxidase and catalase) and reproduction of root-knot nematode Meloidogyne incognita. Application of A. awamori, G. mosseae and PGPR caused a significant increase in pea growth and enzyme activities of both nematode inoculated and uninoculated plants. A. awamori was more effective in reducing galling and improving the growth of nematode inoculated plants than P. alcaligenes or P. polymyxa. The greatest increase in growth, enzyme activities of nematode-inoculated plants and reduction in galling and nematode multiplication was observed when A. awamori was used with P. putida or G. mosseae as compared to the other combinations tested. Percentage root colonization was higher when AM fungus inoculated plants were treated with P. putida both in presence and absence of nematode. (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim).Journal of Basic Microbiology 04/2013; 53(4):318-326. · 1.20 Impact Factor