Abstract
Nematodes are serious problem, parasitizing plants and impairing the yields of various plant species, especially in tropical countries. Control of these organisms is complex and usually demands integrated management practices. One strategy that has attracted the interest of researchers is the use of resistance inducers. Resistance inducers or elicitors can take the form of a chemical compound or a live organism, whose function is to activate the plant’s defense mechanisms. The last few years have seen numerous researches in search of efficient phytonematode resistance inducers. The aim of this review is to present some of the results of this work, indicating its potential and limitations. Key words: Elicitors, management, phytonematode, resistance.
Highlights
Agricultural productivity is determined by factors such as cultivars, water availability, fertilizers, climate, pests and diseases (Gershenson, 2002)
One strategy that has attracted the interest of researchers is the use of resistance inducers
When ASM was sprayed onto vine leaves (50 μg i.a. ml-1), there was no change in the number of Meloidogyne spp. in the roots, three days after inoculation, but there was a drop in the population, three weeks after inoculation, a period compatible with the plant-nematode interaction involving the induction of giant cells in the host, enabling parasites to feed and increase (Owen et al, 2002)
Summary
Agricultural productivity is determined by factors such as cultivars, water availability, fertilizers, climate, pests and diseases (Gershenson, 2002). Phytonematode resistance induction can be applied to both annual and perennial crops, but some factors must be taken into consideration, such as the nature of the specific pathosystem’s interaction, host plant genetics and the need to reactivate defense mechanisms, bearing in mind the temporary effect of the inducer.
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