کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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2056945 | 1075852 | 2010 | 8 صفحه PDF | دانلود رایگان |

The effects of a nitric oxide synthase inhibitor (Nω-nitro-l-arginine) on soybean growth parameters and nodule functioning were investigated, along with soybean nodule cell viability and cysteine endopeptidase activity. Nω-nitro-l-arginine reduced soybean growth parameters, inhibited nodule nitrogenase activity, and caused a decrease in nodule cell viability. The negative effects of Nω-nitro-l-arginine were reversed by the nitric oxide donor 2,2′-(hydroxynitrosohydrazono)bis-ethanimine. Cysteine endopeptidase activity was higher in plants treated with Nω-nitro-l-arginine than untreated plants (controls), but decreased to levels similar to the controls when plants were exposed to a combination of Nω-nitro-l-arginine and 2,2′-(hydroxynitrosohydrazono)bis-ethanimine. These results suggest that nitric oxide, resulting from nitric oxide synthase activity, is required for development of functional soybean nodules.
Journal: Journal of Plant Physiology - Volume 167, Issue 18, 15 December 2010, Pages 1584–1591