Skip to main content

(NAS Colloquium) Virulence and Defense in Host--Pathogen Interactions Common Features Between Plants and Animals (2001) / Chapter Skim
Currently Skimming:

Nitric Oxide and Salicylic Acid Signaling in Plant Defense
Pages 98-104

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 98...
... Interestingly, although plants lack a circulaThis paper was presented at the National Academy of Sciences colloquium "Virulence and Defense in Host-Pathogen Interactions: Common Features Between Plants and Animals," held December 9-11, 1999, at the Arnold and Mabel Beckman Center in Irvine, CA. Abbreviations: ADPRC, ADP-ribosyl cyclase; BTH, benzothiadiazole; cADPR, cyclic ADP ribose; CWD, cell wall-derived; GC, guanylate cyclase; HR, hypersensitive response; INA, 2,6-dichloroisonicotinic acid; IRP-1, iron regulatory protein 1; JA, jasmonic acid; MAP, mitogen-activated protein; NO, nitric oxide; NOS, NO synthase; NtACO1, Nicotiana tabacum aconitase 1; PAL, phenylalanine ammonia Iyase; PR, pathogenesis-related; ROS, reactive oxygen species; SA, salicylic acid; SAR, systemic acquired resistance; SIPK, salicylic acid-induced protein kinase; TMV, tobacco mosaic virus; WIPK, wounding-induced protein kinase.
Read the entire page →
From page 99...
... SA has been shown to work synergistically with ethylene or the JA derivative methyl jasmonate to activate PR expression in tobacco and Arabidopsis (14, 15~; however, other defense responses appear to be regulated by ethylene- and/or JA-dependent pathways that are independent of SA (16, 17~. Another signaling molecule that has been implicated in the activation of plant defenses is nitric oxide (NO)
Read the entire page →
From page 100...
... Arabidopsis Mutants in the SA Signal Transduction Pathway. To identify components involved in the SA signaling pathway, Arabidopsis thaliana mutants that exhibit altered disease resistance have been generated and characterized by several laboratories.
Read the entire page →
From page 101...
... , through a cGMP-dependent protein kinase. The resulting elevated levels of another second messenger, cyclic ADP ribose (cADPR)
Read the entire page →
From page 102...
... This activation appears to be mediated via a SAdependent pathway because SIPK enzymatic activity was not induced in NOS-treated transgenic tobacco plants expressing the nahG gene. By contrast, neither recombinant NOS nor the NO donors caused substantial activation of WIPK.
Read the entire page →
From page 103...
... Conclusions The results presented in this paper strongly argue that both SA and NO play important roles in the activation of plant defense responses after pathogen attack. However, the interrelation ship between their respective signaling pathways is currently unclear.
Read the entire page →
From page 104...
... (1999) in MAP Kinases in Plant Signal Transduction, ed.
Read the entire page →

Key Terms

  • protein kinase
  • plant defense
  • signaling pathway
  • disease resistance
  • map kinases

  • transgenic tobacco
  • suspension cells
  • defense genes
  • nitric oxide
  • signaling pathways

  • adp ribose
  • cyclic adp
  • tobacco expressing
  • free iron
  • signal transduction

  • pathogen attack
  • salicylic acid
  • ascorbate peroxidase
  • signaling molecule
  • enzymatic activity

  • various defense
  • mosaic virus
  • recombinant nos
  • nos inhibitor
  • northern blot

  • blot analysis
  • guanylate cyclase
  • cell death
  • elevated levels
  • regulatory protein


    • This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
    More information on Chapter Skim is available.