Abstract
Plant parasitic nematodes (PPNs) have become the second major class of agricultural diseases behind the fungal diseases, causing annual crop losses of $173 billion worldwide. This is due to the fact that PPNs have a complex and highly sensitive chemosensory system, which is involved in the whole process from their migration in the soil to establishment of a suitable feeding site in tissues of host plants. It has been shown that fat and its derivatives, neuropeptides, root exudates, plant hormone, and some other chemical molecules can be sensed by the chemosensory system of PPNs. The functions of the chemosensory system and its effects on PPNs’ parasitic life have been investigated and become gradually known. This review summarizes the current research progress of PPNs’ chemosensory system from multiple aspects, hoping to provide more ideas for biological control of PPNs.
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