Biochemical mechanisms of plant resistance to nematodes: a review
Giebel, J.
Journal of Nematology 6(4): 175-184
1974
ISSN/ISBN: 0022-300X PMID: 19308118 Document Number: 81898
The resistance of plants to nematodes is considered to be of 4 types: production of toxins by the plant, lack of substances in the plant necessary for nematode growth and reproduction, lack of attraction for the nematode, and plant tissue hypersensitivity. The last type is considered the most important for plant protection and forms the basis of this review. The roles of mechanical damage and nematode metabolic products and enzymes in initiating the host response, and of auxins, other plant hormones and phenolic compounds in the response of the host are discussed. A hypothesis of the mechanism of resistance (based on the Heterodera rostochiensis/potato relationship) is proposed and outlined. It is assumed that the pathogenic changes in susceptible plants are due to auxins secreted by the nematode or released from complexes by the action of nematode enzymes such as glycosidases and proteases. There are 80 references.