Nitrogen Metabolism in Senescent Flag Leaves of Wheat (Triticum aestivum L.) in the Light
نویسندگان
چکیده
منابع مشابه
The wheat (Triticum aestivum L.) leaf proteome.
The wheat leaf proteome was mapped and partially characterized to function as a comparative template for future wheat research. In total, 404 proteins were visualized, and 277 of these were selected for analysis based on reproducibility and relative quantity. Using a combination of protein and expressed sequence tag database searching, 142 proteins were putatively identified with an identificat...
متن کاملMitochondria are the main target for oxidative damage in leaves of wheat (Triticum aestivum L.).
Photosynthesis, respiration, and other processes produce reactive oxygen species (ROS) that can cause oxidative modifications to proteins, lipids, and DNA. The production of ROS increases under stress conditions, causing oxidative damage and impairment of normal metabolism. In this work, oxidative damage to various subcellular compartments (i.e. chloroplasts, mitochondria, and peroxisomes) was ...
متن کاملPhotosynthetic and ascorbate-glutathione metabolism in the flag leaves as compared to spikes under drought stress of winter wheat (Triticum aestivum L.)
Ascorbate-glutathione (ASA-GSH) cycle is a major pathway of H2O2 scavenging and an effective mechanism of detoxification in plants. The differences in photosynthesis, chlorophyll content (Chl), relative water content (RWC), antioxidants and antioxidative enzyme activities involved in ASA-GSH metabolism were measured between the flag leaves and spike bracts (glumes and lemmas) during grain filli...
متن کاملIsolation of Protoplasts and Chloroplasts from Flag Leaves of Triticum aestivum L.
Intact protoplasts and chloroplasts have been isolated from mature flag leaves of wheat (Triticum aestivum L.). Both showed high rates of photosynthesis, the best of which equaled those observed in the parent tissue (greater than 150 micromoles O(2) per milligram chlorophyll per hour). The presence of ethylenediaminetetraacetate and an alkaline medium (pH 8.4) were required in the isolation and...
متن کاملAcid Carboxypeptidases in Grains and Leaves of Wheat, Triticum aestivum L.
Extracts of resting and germinating (3 days at 20 degrees C) wheat (Triticum aestivum L. cv Ruso) grains rapidly hydrolyzed various benzyloxycarbonyldipeptides (Z-dipeptides) at pH 4 to 6. Similar activities were present in extracts of mature flag leaves. Fractionation by chromatography on CM-cellulose and on Sephadex G-200 showed that the activities in germinating grains were due to five acid ...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1985
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.78.4.779