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Induction of systemic acquired resistance in cucumber by Pseudomonas syringae pv. syringae 61 HrpZPss protein

Publication ,  Journal Article
Strobel, NE; Ji, C; Gopalan, S; Kuc, JA; He, SV
Published in: Plant Journal
January 1, 1996

Systemic acquired resistance (SAR) is an inducible plant defense response and is effective against a broad spectrum of pathogens. Biological induction of SAR usually follows plant cell death resulting from the plant hypersensitive response (HR) elicited by an a virulent pathogen or from disease necrosis caused by a virulent pathogen. The elicitation of the HR and disease necroses by pathogenic bacteria is controlled by hrp genes. Previously, it was shown that the Pseudomonas syringae 61 (Pss61) HrpZPss protein (formally harpinPss) elicited the HR in plants. In this study, it is shown that HrpZpss induced SAR in cucumber to diverse pathogens, including the anthracnose fungus (Colletotrichum lagenarium), tobacco necrosis virus and the bacterial angular leaf spot bacterium (P. s. pv. lachrymans). A hrpH mutant of Pss61, which is defective in the secretion of HrpZPss and, possibly, other protein elicitors, failed to elicit SAR. Pathogenesis-related (PR) proteins, including peroxidase, β-glucanase and chitinases, were induced in cucumber plants inoculated with Pss61, C. lagenarium or HrPZpss. The induction patterns of PR proteins by HrpZPss and Pss61 were the same, but were different from that induced by C. lagenarium. Interestingly, the hrpH mutant induced two of the three identified PR proteins, despite its failure to induce SAR. These results suggest that proteinaceous elicitors, such as HrPZPss, that traverse the bacterial Hrp secretion pathway are involved in the biological induction of SAR and that at least some PR proteins can be induced by bacterial factors that are not controlled by hrp genes.

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Published In

Plant Journal

DOI

ISSN

0960-7412

Publication Date

January 1, 1996

Volume

9

Issue

4

Start / End Page

431 / 439

Related Subject Headings

  • Plant Biology & Botany
  • 3108 Plant biology
  • 3101 Biochemistry and cell biology
  • 0607 Plant Biology
  • 0601 Biochemistry and Cell Biology
 

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Strobel, N. E., Ji, C., Gopalan, S., Kuc, J. A., & He, S. V. (1996). Induction of systemic acquired resistance in cucumber by Pseudomonas syringae pv. syringae 61 HrpZPss protein. Plant Journal, 9(4), 431–439. https://doi.org/10.1046/j.1365-313X.1996.09040431.x
Strobel, N. E., C. Ji, S. Gopalan, J. A. Kuc, and S. V. He. “Induction of systemic acquired resistance in cucumber by Pseudomonas syringae pv. syringae 61 HrpZPss protein.” Plant Journal 9, no. 4 (January 1, 1996): 431–39. https://doi.org/10.1046/j.1365-313X.1996.09040431.x.
Strobel NE, Ji C, Gopalan S, Kuc JA, He SV. Induction of systemic acquired resistance in cucumber by Pseudomonas syringae pv. syringae 61 HrpZPss protein. Plant Journal. 1996 Jan 1;9(4):431–9.
Strobel, N. E., et al. “Induction of systemic acquired resistance in cucumber by Pseudomonas syringae pv. syringae 61 HrpZPss protein.” Plant Journal, vol. 9, no. 4, Jan. 1996, pp. 431–39. Scopus, doi:10.1046/j.1365-313X.1996.09040431.x.
Strobel NE, Ji C, Gopalan S, Kuc JA, He SV. Induction of systemic acquired resistance in cucumber by Pseudomonas syringae pv. syringae 61 HrpZPss protein. Plant Journal. 1996 Jan 1;9(4):431–439.
Journal cover image

Published In

Plant Journal

DOI

ISSN

0960-7412

Publication Date

January 1, 1996

Volume

9

Issue

4

Start / End Page

431 / 439

Related Subject Headings

  • Plant Biology & Botany
  • 3108 Plant biology
  • 3101 Biochemistry and cell biology
  • 0607 Plant Biology
  • 0601 Biochemistry and Cell Biology