Model Plant Pathogen from the Kingdom Animalia: Heterodera glycines, the Soybean Cyst Nematode

• Published in: Annual review of phytopathology Vol. 44; pp. 283 - 303
• Main Authors: Niblack, T.L, Lambert, K.N, Tylka, G.L
• Format: Journal Article
• Language: English
• Published: United States 01.01.2006
• Subjects: Animals; crop rotation; cultivars; cyst nematodes; evolution; field crops; genomics; Glycine max; Glycine max - parasitology; Heterodera glycines; host plants; literature reviews; Nematoda - genetics; Nematoda - physiology; pest resistance; Plant Diseases - parasitology; plant pests; resistance mechanisms; root diseases; sexual reproduction; soybeans; virulence
• ISSN: 0066-4286; 1545-2107
• DOI: 10.1146/annurev.phyto.43.040204.140218

The soybean cyst nematode, Heterodera glycines, adversely affects the production of soybean, Glycine max, in many areas of the world, particularly in the United States, where it is the most economically important soybean pathogen. Despite the availability of hundreds of H. glycines-resistant soybean cultivars, the nematode continues to be a major limiting factor in soybean production. The use of nonhost rotation and resistance are the primary means of reducing losses caused by the nematode, but each of these options has disadvantages. As a subject for study of nematode parasitism and virulence, H. glycines provides a useful model despite its obligately parasitic nature. Its obligately sexual reproduction and ready adaptation to resistant cultivars, formerly referred to as "race shift," presents an excellent opportunity for the study of virulence in nematodes. Recent advances in H. glycines genomics have helped identify putative nematode parasitism genes, which, in turn, will aid in the understanding of nematode pathogenicity and virulence and may provide new targets for engineering nematode resistance.