Biocontrol of Plant Diseases for Agricultural Sustainability

Nautiyal, Chandra Shekhar

doi:10.1007/978-1-4615-4209-4_2

Cited by 8 publications

(1 citation statement)

References 15 publications

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“…If the inoculum of a biocontrol agent is not rhizosphere-competent, or is unable to compete in soil, it will fail to establish in the environment after its introduction, causing failure of the biocontrol strategy chosen for soil pests and diseases. Understanding the interactions between the biocontrol agent selected and the complex of the soil and rhizosphere microbial communities is therefore essential (Nautiyal 2000).…”

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In vitro soil receptivity assays to egg-parasitic nematophagous fungi

et al. 2006

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Soil application of nematophagous fungi for the biological control of plant-parasitic nematodes often fails, and in many cases it has been difficult to reisolate the agent delivered to the soil. A reason for these results could be the inability of the fungi to proliferate in soil. We used a soilmembrane technique to study the capacity of several isolates of the nematophagous fungi Pochonia chlamydosporia and Paecilomyces lilacinus to grow and establish in sterilized and nonsterilized sandy soils from SE Spain and Western Australia. Growth of all fungi tested was inhibited in nonsterilized soil, although there was intraspecific variability in sensitivity among isolates of the same species. With respect to hyphal density, P. chlamydosporia isolate 5 (from Italy) was the least inhibited in nonsterilized soil from both sites. Relative growth analyses confirmed this result for soil from SE Spain, while with this method, P. chlamydosporia isolate 4624 (from Australia) appeared to be least inhibited in the Australian soil. The results indicate that a soil can be more receptive to its indigenous isolates than to nonindigenous isolates. Apparently, soil microbiota can determine the ability of nematophagous fungi to proliferate in soil.

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confidence: 99%