Journal article

Publication year: 1991

Pages: 471-482

Journal: Physiological and Molecular Plant Pathology

Volume number: 39

Issue number: 6

ISSN: 0885-5765

DOI Link: https://doi.org/10.1016/0885-5765(91)90013-8

Publisher: Elsevier

Abstract: 

A new class of toxic compounds has been identified in culture filtrates of the barley pathogen Rhynchosporium secalis race US238.1. Three necrosis-inducing peptides (NIPs) with relative ssmolecular masses of <10 kDa were purified to homogeneity. NIP1 and NIP2 appear to be non-glycosylated, but NIP3 is a glycopeptide, although its toxic activity resides in the peptide moiety. In bioassays, these toxins were host nonspecific since they caused necrosis in primary leaves of both resistant and susceptible near-isogenic cultivars. However, upon fungal infection, NIP3 and a peptide cross-reacting with antisera raised against NIP1, but with a higher relative molecular mass, were detected only in the susceptible cultivar. The appearance of both peptides in vivo correlated with lesion development. Their possible role in pathogenesis is discussed.

Harvard Citation style: Wevelsiep, L., Kogel, K. and Knogge, W. (1991) Purification and characterization of peptides from Rhynchosporium secalis inducing necrosis in barley, Physiological and Molecular Plant Pathology, 39(6), pp. 471-482. https://doi.org/10.1016/0885-5765(91)90013-8

APA Citation style: Wevelsiep, L., Kogel, K., & Knogge, W. (1991). Purification and characterization of peptides from Rhynchosporium secalis inducing necrosis in barley. Physiological and Molecular Plant Pathology. 39(6), 471-482. https://doi.org/10.1016/0885-5765(91)90013-8