Respiratory Metabolism of Mitochondria in Soybean Root Nodules
نویسندگان
چکیده
منابع مشابه
Peptidohydrolases of Soybean Root Nodules
Nodule extracts prepared from Glycine max var Woodworth possessed endopeptidase, aminoptidase, and carboxypeptidase actiities. Three distinct endopeptidase activities could be resolved by disc-gel electrophoresis at pH 8.8. According to their order of increasing electrophoretic mobility, the first of these enzymes hydrolyzed azocasein and n-benzoyl-LLeu-p8-naphthylamide, while the second hydrol...
متن کاملThe Oxidative Properties of Mitochondria and Bacteroids from Root Nodules of Soybean Treated with Organic Acids
Nodule mitochondria are highly sensitive to the respiratory inhibitor antimycine A. The antimycine-resistant oxygen uptake is 5–10% of the rate of control mitochondrial respiration. The high sensitivity to this inhibitor means that non-phosphorilating pathways are absent from the nodules and the energetic effectiveness of mitochondria is very high. The latter is proved by the good respiratory c...
متن کاملAscorbate peroxidase from soybean root nodules.
AP is involved in the destruction of harmful H202. In soybean (Glycine m a x [LI Merr.) root nodules, AP initiates a sequence of coupled redox reactions (ascorbate-GSH pathway) that results in peroxide scavenging (Dalton et al., 1986). The ascorbate-GSH pathway occurs in other plant tissues and has been extensively studied in chloroplasts where photoreducing conditions lead to the production of...
متن کاملPhysiological roles of glutathione s-transferases in soybean root nodules.
Glutathione S-transferases (GSTs) are ubiquitous enzymes that catalyze the conjugation of toxic xenobiotics and oxidatively produced compounds to reduced glutathione, which facilitates their metabolism, sequestration, or removal. We report here that soybean (Glycine max) root nodules contain at least 14 forms of GST, with GST9 being most prevalent, as measured by both real-time reverse transcri...
متن کاملAsparaginase and asparagine transaminase in soybean leaves and root nodules.
Asparaginase activity (</=1 mumol/mg protein . hr) was detected in extracts of soybean (Glycine max [L.] Merr.) leaf blades, but, even after efforts to optimize extraction and assay of the enzyme, specific activity was not sufficient to metabolize the estimated amount of asparagine translocated to leaves. Asparagine transaminase activity with glyoxylate or pyruvate was at least 52 and 62 nmol/m...
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ژورنال
عنوان ژورنال: Soil Science and Plant Nutrition
سال: 1987
ISSN: 0038-0768,1747-0765
DOI: 10.1080/00380768.1987.10557555