Nitric oxide regulates plant and animal signaling.
Subject: Nitric oxide (Research)
Chemical plants (Research)
Pub Date: 09/01/2009
Publication: Name: Agricultural Research Publisher: U.S. Government Printing Office Audience: Academic; General Format: Magazine/Journal Subject: Agricultural industry; Biotechnology industry; Business Copyright: COPYRIGHT 2009 U.S. Government Printing Office ISSN: 0002-161X
Issue: Date: Sept, 2009 Source Volume: 57 Source Issue: 8
Topic: Event Code: 310 Science & research
Product: Product Code: 2813772 Nitric Oxide NAICS Code: 32512 Industrial Gas Manufacturing SIC Code: 2813 Industrial gases
Accession Number: 242017223
Full Text: A sometimes-toxic byproduct of nitrogen oxidation in soil, nitric oxide (NO) may have broader implications in plant processes than previously realized. Its modification of proteins through a process called "S-nitrosylation" is increasingly recognized as a ubiquitous regulatory reaction in both plants and mammals. In plants, NO inactivates rubisco, a major enzyme involved in carbon dioxide fixation and photosynthesis.

Recent findings came about from studying Kalanchoe pinnata, or miracle leaf, as a model plant; previous work looked at NO targets in the most common model plant, Arabidopsis. Targeted proteins and enzymes are involved in regulating processes ranging from seed germination and cell development to plant death, as well as sugar metabolism and tolerance to diseases and stress. Both model plants have some NO targets in common, but this study--conducted with professor Renu Deswal and a doctoral student in the Botany Department, University of Delhi, India--revealed new protein targets not previously reported. Autar Mattoo, USDAARS Sustainable Agricultural Systems Laboratory, Beltsville, Maryland; phone (301) 504-6622, e-mail autar.mattoo@ ars.usda.gov.
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