Interaction of vesicular-arbuscular mycorrhiza with root-knot nematode in tomato

University of Agricultural Sciences Department of Agricultural Microbiology and Plant Pathology 560 065 Bangalore India
Plant and Soil (Impact Factor: 2.95). 01/1979; 51(3):397-403. DOI: 10.1007/BF02197786


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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    • "Among all the bioagents, T. viride as soil application recorded the lowest yield of 37.10% g / plant. Data recorded was correlated to the Akhtar et al. (2007); Anjos et al., (2010); Arumugam et al. (2010); Bagyaraj et al. (1979) and Ordookhani & Zare, (2011); Alguacil et al., (2011) documented that the colonization of arbuscular mycorrhizal fungi was higher when applied as seed treatment on Prunus persica than soil application. Further they have also noticed that the decreasing population of nematode and ultimately increasing of yield. "
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    ABSTRACT: This study made to consider the effectiveness of commercial formulation of VAM fungus (Glomus mosseae), bacterial agent(Pseudomonas fluorescens) and antagonistic fungus(Trichoderma viride) against reniform nematode, Rotylenchulus reniformis on sunflower under greenhouse condition. Three bioagents each subsequently representing G. mosseae as soil application and P. fluorescens as seed treatment are held to improve the plant growth and yield of sunflower. As soil application, G. mosseae produced maximum reduction of nematode population in roots (65.1%) and soil (73.1%) which was on par with seed treatment of P. fluorescens. Significant numbers of eggs / egg mass also decreased in these treatments. The less effective R. reniformis managers were T. viride both as seed treatment and soil application.
    International Journal of Biological & Pharmaceutical Research 05/2014; 5(10):786-789.
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    • "Nematophagous fungi with greatest biocontrol capacity include nematode-trapping fungi (e.g., Arthrobotrys irregularis) and fungi that parasitize eggs and females (e.g., Paecilomyces lilacinus) (Dong and Zhang, 2006). Arbuscular mycorrhizal fungi of the genus Glomus have been shown to significantly reduce the severity of root galling and reproduction of root-knot nematode Melidogyne incognita resulting from inoculation with G. fasciculatum in tomato (Bagyaraj et al., 1979), with G. mosseae in banana (Jaizme-Vega et al., 1997), and with G. intraradices, G. mosseae or G. viscosum in olive planting stocks (Castillo et al., 2006). The actinomycete Streptomyces avermitilis and bacteria Burkholderia cepacia are also effective nematode antagonists, and in addition to the nemathophagous fungi mentioned earlier, have been patented as biocontrol agents and commercialized (Dong and Zhang, 2006). "

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    • "In addition, Li et al. (2006) have demonstrated that AM fungi induce resistance giving a defence response against rootknot nematode in grapevine roots that involves transcriptional control of VCH3 gene (Vitis Class III Chitinase) expression throughout the whole root system. Moreover, treatment with Glomus sp. is also reported to increase phenylalanine and serine in tomato roots (Suresh 1980); these amino acids have an inhibitory effect on nematodes (Reddy 1974). Pseudomonads may also improve plant growth by suppressing parasitic and non-parasitic root pathogens (Oostendrop and Sikora 1989) through the production of biologically active substances (Gamliel and Katan 1993) or the conversion of unavailable minerals and organic compounds into forms that are available to plants (Broadbent et al. 1977; Siddiqui and Mahmood, 1999). "
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    ABSTRACT: The effects of Glomus intraradices and Pseudomonas putida were observed alone and in combination with fertilizers (composted cow manure and urea) on the growth of tomato and on the reproduction of Meloidogyne incognita. Inoculation of P. putida caused a greater increase in the tomato growth than G. intraradices and inoculation of both together caused a greater increase than by either of them. Use of composted manure was better in increasing tomato growth than urea and high dosage of fertilizers were more effective than low dosage. Composted manure with P. putida and G. intraradices was more beneficial for tomato growth than the use of urea with these microorganisms. Root colonization by G. intraradices and P. putida was increased with composted manure while urea had an adverse effect on root colonization. Pseudomonas putida caused a higher reduction in galling and nematode multiplication than G. intraradices. The maximum reduction in galling and nematode multiplication was observed when P. putida was used with G. intraradices together with composted manure.
    Journal of Plant Interactions 12/2008; 3(4-4):263-271. DOI:10.1080/17429140802272717 · 0.87 Impact Factor
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