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http://krishi.icar.gov.in/jspui/handle/123456789/76433
Title: | Interactions among entomopathogenic nematodes and other nematode trophic groups and plants in agroecosystems. |
Other Titles: | Not Available |
Authors: | Somasekhar, N 1 Jagdale, G.B 2 Grewal, P.S. 2 |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | 1 ICAR::Indian Institute of Rice Research 2 Ohio State University |
Published/ Complete Date: | 2012-01-01 |
Project Code: | Not Available |
Keywords: | Entomopathogenic nematodes, Interactions, nematode trophic groups, plants |
Publisher: | Society of Nematologists |
Citation: | Somasekhar, N, Jagdale, G.B and Grewal, P.S. (2012). Interactions among entomopathogenic nematodes and other nematode trophic groups and plants in agroecosystems. Journal of Nematology 44 (4):481–482. |
Series/Report no.: | Not Available; |
Abstract/Description: | Entomopathogenic nematodes together with their symbiotic bacteria represent an important biological control system.These nematodes are being increasingly used for the control of soil pests in many crops worldwide due to their positive attributes and exemption from registration requirements in many countries. Available information from field studies suggests that predictability of control, an important consideration in biological control programs can only be achieved with entomopathogenic nematodes by deploying right nematode species/isolate against right pest in the right ecosystem. This essentially requires precise knowledge of evolutionary relationships and multitrophic interactions of entomopathogenic nematodes in soil food webs. In this context, we have addressed interactions of entomopathogenic nematodes with other nematode trophic groups and plants in agroecosystems. Although, inundative field applications of entomopathogenic nematodes were shown to have no significant long-term adverse impact on non-target arthropods, improvements in plant growth were observed in fields treated with entomopathogenic nematodes in some areas. This plant growth improvement was attributed to the decrease in abundance of plant parasitic nematodes following application of entomopathogenic nematodes. Following this, there was a surge in reports on suppression of plant parasitic nematodes by entomopathogenic nematodes. The interaction between entomopathogenic nematodes and plant-parasitic nematodes has become a subject of intense study from both ecological and commercial perspective over the past two decades. While suppression of plant parasitic nematodes, though a non-target effect, is considered beneficial from the pest management perspective, concerns were raised about its mechanisms and the possible adverse impact of entomopathogenic nematodes on other nematode trophic groups in soil and ecosystem services they provide. Our efforts to address these key issues resulted in unravelling of a unique phenomenon of selective suppression of plant parasitic nematodes by entomopathogenic nematodes without any adverse impact on beneficial free-living trophic groups (bacterivores, fungivores, predators, omnivores) of nematodes in soil food webs. This effect was referred as a beneficial non-target effect of entomopathogenic nematodes. These findings gave further impetus to the studies on the mechanisms underlying suppression of plant parasitic nematodes by entomopathogenic nematodes. Recent studies have demonstrated that the entomopathogenic nematodes and their symbiotic bacteria can induce systemic resistance in plants which may act against plant parasitic nematodes. This gives an insight into how entomopathogenic nematodes could selectively suppress plant parasitic nematodes in soil ecosystem. Our current understanding of the interaction of entomopathogenic nematodes with other trophic groups of soil nematodes and plants, its ecological significance and consequences for their successful use in biological control programs are discussed in the light of recent developments in the field of entomopathogenic nematology |
Description: | Not Available |
ISSN: | 0022-300X |
Type(s) of content: | Journal |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Journal of Nematology |
Journal Type: | Journal |
NAAS Rating: | 7.40 |
Impact Factor: | 1.402 |
Volume No.: | 44 (4) |
Page Number: | 481–482 |
Name of the Division/Regional Station: | Department of Entomology |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/76433 |
Appears in Collections: | CS-IIRR-Publication |
Files in This Item:
File | Description | Size | Format | |
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Interactions among EPN-JON.pdf.pdf | 74.37 kB | Adobe PDF | View/Open |
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