Abstract
Plant pathogenic nematodes are one of the important biotic constraints in crop production. Climate change due to increased emission of greenhouse gases is posing a serious challenge to sustainability of crop production by interfering with biotic and abiotic components and their interactions with each other. Global warming resulting in elevated carbon dioxide (CO2) and temperature in the atmosphere may influence plant pathogenic nematodes directly by interfering with their developmental rate and survival strategies and indirectly by altering host plant physiology. Available information on effect of global warming on plant pathogenic nematodes though limited, indicate that nematodes show a neutral or positive response to CO2 enrichment effects with some species showing the potential to build up rapidly and interfere with plant’s response to global warming. Studies have also demonstrated that the geographical distribution range of plant pathogenic nematodes may expand with global warming spreading nematode problems to newer areas. Besides plant parasites, other trophic groups (microbial feeders, predators and insect parasites) of soil nematodes also shown to influence the plant productivity indirectly by regulating the key ecosystem processes including decomposition, nutrient mineralization, biological pest suppression and energy transfer in food webs. These findings underline the importance of understanding the impact of climate change on soil nematodes and its implications to crop production while developing mitigation and adaptation strategies to address impact of climate change on agriculture.
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Somasekhar, N., Prasad, J.S. (2012). Plant – Nematode Interactions: Consequences of Climate Change. In: Venkateswarlu, B., Shanker, A., Shanker, C., Maheswari, M. (eds) Crop Stress and its Management: Perspectives and Strategies. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-2220-0_17
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