The soybean cyst nematode (SCN), Heterodera glycines, is the most devastating pathogen of soybean worldwide. SiRNAs (small interfere RNAs) have been proven to induce the silencing of cyst nematode genes. However, whether small RNAs from soybean root have evolved a similar mechanism against SCN is unknown. Two genetically related soybean sister lines (ZP03-5373 and ZP03-5413), which are resistan...

Studying wild pathogen populations in natural ecosystems offers the opportunity to better understand the evolutionary dynamics of biotic diseases in crops and to enhance pest control strategies. We used simulations and genetic markers to investigate the spatial and temporal population genetic structure of wild populations of the beet cyst nematode Heterodera schachtii on a wild host plant speci...

Cyst nematodes invade the roots of their host plants as second stage juveniles and induce a syncytium which is the only source of nutrients throughout their life. A recent transcriptome analysis of syncytia induced by the beet cyst nematode Heterodera schachtii in Arabidopsis roots has shown that thousands of genes are up-regulated or down-regulated in syncytia as compared to root segments from...

In the presence of potato plants cv. Golden Wonder, Globodera pallida exhibited delayed in-soil hatch compared to that of G. rostochiensis, with significantly fewer G. pallida second-stage juvenile nematodes hatching in the first two weeks, though the difference disappeared after four weeks. Inoculation of potato plants with arbuscular mycorrhizal fungi eliminated this delay in G. pallida hatch...

The sugarbeet cyst nematode, Heterodera schachtii Schmidt, 1871, was discovered by Mai et al. (4) in fields of 16 New York State commercial red table beet growers during a survey in 1970-1971. They reported that the clover cyst nematode, H. trifolii Goffart, 1932, which also has lemon-shaped cysts with bullae, was present in very low numbers in many of the fields sampled. Thus a rapid and relia...

Actin is an abundant, highly expressed, and much conserved protein belonging to the actin–heat shock protein70–sugarkinase superfamily. The full-length messenger RNAs encoding actin were cloned and characterized from the plant-parasitic cyst nematodes Heterodera glycines and Globodera rostochiensis and from the free-living nematode Panagrellus redivivus. The actins from the plant-parasitic nema...