Abstract:

Plant-parasitic nematodes parasitize various plants,resulting in crop yield reduction and serious economic losses. Genomics study of plant parasitic nematode play an irreplaceable role in revealing the molecular mechanism of interaction between parasitic nematodes and plants,as well as breeding nematode-resistant varieties. With the continuous development of high-throughput sequencing technology,the genome of multiple important plant parasitic nematodes has been revealed and reported. The evolution and origin of plant-parasitic nematodes have been more clearly defined by the development of comparative genomics,and some progress has been made in functional genomics of plant parasitic nematodes. This paper gives a brief review on the major research advances of plant-parasitic nematode genomes,including general features,genome variation,sequences of tandem repeat genes,gene regulation and gene co-expression,horizontal gene transfer,effectors discovery and gene family expansions,aiming at providing a reference for the research on the pathogenic molecular mechanism of plant nematodes and the development of new control strategies.

Key words: plant-parasitic nematode, genome, horizontal gene transfer, effectors, gene family expansion