HOMEPRODUCTSCOMPANYCONTACTFAQResearchDictionaryPharmaSign Up FREE or Login

Arabidopsis leaf necrosis caused by simulated acid rain is related to the salicylic acid signaling pathway.

Abstract
Arabidopsis leaves treated with simulated acid rain (SiAR) showed phenotypes similar to necrotic lesions caused by biotic stresses like Pseudomonad infiltration. Exposure of Arabidopsis to SiAR resulted in the up-regulation of genes known to be induced by the salicylic acid (SA)-mediated pathogen resistance response. The expression of enhanced disease susceptibility (EDS), nonexpressor of PR (NPR) and pathogen-related 1 (PR1), all of which are involved in the salicylic acid signaling pathway, were increased after SiAR exposure. However, vegetative storage protein (VSP), a member of the jasmonic acid pathway did not show a significant change in transcript level. SiAR treatment of transgenic plants expressing salicylate hydroxylase (Nah-G), which prevents the accumulation of salicylic acid, underwent more extensive necrosis than wild-type plants, indicating that the signaling pathway activated by SiAR may overlap with the SA-dependent, systemic acquired resistance pathway. Both Col-0 and Nah-G plants showed sensitivity to SiAR and sulfuric SiAR (S-SiAR) by developing necrotic lesions. Neither Col-0 plants nor Nah-G plants showed sensitivity to nitric SiAR (N-SiAR). These results suggest that SiAR activates at least the salicylic acid pathway and activation of this pathway is sensitive to sulfuric acid.
AuthorsYoungmi Lee, Jongbum Park, Kyunghoan Im, Kiyoon Kim, Jungwoo Lee, Kyungyeoll Lee, Jung-An Park, Taek-Kyun Lee, Dae-Sup Park, Joo-Sung Yang, Donggiun Kim, Sukchan Lee
JournalPlant physiology and biochemistry : PPB (Plant Physiol Biochem) Vol. 44 Issue 1 Pg. 38-42 (Jan 2006) ISSN: 0981-9428 [Print] France
PMID16549362 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Acid Rain
  • Arabidopsis Proteins
  • Cyclopentanes
  • Oxylipins
  • jasmonic acid
  • Mixed Function Oxygenases
  • salicylate 1-monooxygenase
  • Salicylic Acid
Topics
  • Acid Rain (toxicity)
  • Arabidopsis (genetics, metabolism, physiology)
  • Arabidopsis Proteins (metabolism)
  • Cyclopentanes (metabolism)
  • Mixed Function Oxygenases (genetics, metabolism)
  • Oxylipins
  • Plant Diseases (chemically induced, genetics)
  • Plant Leaves (metabolism, physiology)
  • Plants, Genetically Modified
  • Salicylic Acid (metabolism)
  • Signal Transduction

Join CureHunter, for free Research Interface BASIC access!

Take advantage of free CureHunter research engine access to explore the best drug and treatment options for any disease. Find out why thousands of doctors, pharma researchers and patient activists around the world use CureHunter every day.
Realize the full power of the drug-disease research graph!


Choose Username:
Email:
Password:
Verify Password:
Enter Code Shown: