An extracellular aspartic protease functions in Arabidopsis disease resistence signaling

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Article on an extracellular aspartic protease functions in Arabidopsis disease resistance signaling.

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9 p.

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Xia, Yiji; Suzuki, Hideyuki; Borevitz, Justin; Blount, Jack W.; Guo, Zejian; Patel, Kanu et al. February 25, 2004.

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Article on an extracellular aspartic protease functions in Arabidopsis disease resistance signaling.

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9 p.

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Abstract: We have used activation tagging with T-DNA carrying cauliflower mosaic virus 35S enhancers to investigate the complex signaling networks underlying disease resistance in Arabidopsis. From a screen of ∼5000 lines, we identified constitutive disease resistance (CDR1) encoding an apoplastic aspartic protease, the overexpression of which causes dwarfing and resistance to virulent Pseudomonas syringae. These phenotypes reflect salicylic-acid-dependent activation of micro-oxidative bursts and various defense-related genes. Antisense CDR1 plants were compromised for resistance to avirulent P. syringae and more susceptible to virulent strains than wild type. CDR1 accumulates in intercellular fluid in response to pathogen attacks. Induction of CDR1 generates a small mobile signal, and CDR1 action is blocked by the protease inhibitor pepstatin and by mutations in the protease active sites. We propose that CDR1 mediates a peptide signal system involved in the activation of inducible resistance mechanisms.

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  • European Molecular Biology Organization Journal, 2004, Heidelberg: European Molecular Biology Organization, pp. 980-988

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  • Publication Title: European Molecular Biology Organization Journal
  • Volume: 23
  • Issue: 4
  • Page Start: 980
  • Page End: 988
  • Pages: 9
  • Peer Reviewed: Yes

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  • February 25, 2004

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  • Jan. 22, 2015, 9:04 a.m.

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  • Aug. 30, 2017, 2:53 p.m.

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Xia, Yiji; Suzuki, Hideyuki; Borevitz, Justin; Blount, Jack W.; Guo, Zejian; Patel, Kanu et al. An extracellular aspartic protease functions in Arabidopsis disease resistence signaling, article, February 25, 2004; [Heidelberg, Germany]. (digital.library.unt.edu/ark:/67531/metadc488154/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.