חיפוש מתקדם
Plant, Cell & Environment
FUCHS, Y., Division of Fruit and Vegetable Storage, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan, Israel
MATTOO, A.K., Department of Plant Genetics, Weizmann Institute of Science, Rehovot, Israel
CHALUTZ, E., Division of Fruit and Vegetable Storage, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan, Israel
ROT, I., Division of Fruit and Vegetable Storage, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan, Israel
Abstract. Phosphate inhibited endogenous as well as 1‐aminocyclopropane‐1‐carboxylic acid (ACC)‐stimulated ethylene synthesis in slices of tomato fruit, segments of carrot root and pea hypocotyls. ACC concentrations of up to 10 mol m−3 did not overcome this inhibition. Phosphate inhibited the conversion of 14C ACC to ethylene in tomato fruit and vegetative tissue. Enzymatic conversion of ACC to ethylene by pea seedling homogenate was also inhibited by phosphate with a linear concentration dependency. The formation of ACC from S‐adenosylmethionine (SAM) by extracts of pink tomatd fruit was slightly, but not significantly, affected by phosphate. However, the SAM to ACC conversion was greater when extracts from tomato fruit were made in phosphate rather than in HEPES‐KOH buffer. Non‐enzymatic ethylene synthesis from ACC in a model system was stimulated by phosphate. We suggest that phosphate is an inhibitor of ethylene biosynthesis in higher plants and that one site of its control is the conversion of ACC to ethylene. Copyright © 1981, Wiley Blackwell. All rights reserved
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
Biosynthesis of ethylene in higher plants: the metabolic site of inhibition by phosphate
4
FUCHS, Y., Division of Fruit and Vegetable Storage, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan, Israel
MATTOO, A.K., Department of Plant Genetics, Weizmann Institute of Science, Rehovot, Israel
CHALUTZ, E., Division of Fruit and Vegetable Storage, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan, Israel
ROT, I., Division of Fruit and Vegetable Storage, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan, Israel
Biosynthesis of ethylene in higher plants: the metabolic site of inhibition by phosphate
Abstract. Phosphate inhibited endogenous as well as 1‐aminocyclopropane‐1‐carboxylic acid (ACC)‐stimulated ethylene synthesis in slices of tomato fruit, segments of carrot root and pea hypocotyls. ACC concentrations of up to 10 mol m−3 did not overcome this inhibition. Phosphate inhibited the conversion of 14C ACC to ethylene in tomato fruit and vegetative tissue. Enzymatic conversion of ACC to ethylene by pea seedling homogenate was also inhibited by phosphate with a linear concentration dependency. The formation of ACC from S‐adenosylmethionine (SAM) by extracts of pink tomatd fruit was slightly, but not significantly, affected by phosphate. However, the SAM to ACC conversion was greater when extracts from tomato fruit were made in phosphate rather than in HEPES‐KOH buffer. Non‐enzymatic ethylene synthesis from ACC in a model system was stimulated by phosphate. We suggest that phosphate is an inhibitor of ethylene biosynthesis in higher plants and that one site of its control is the conversion of ACC to ethylene. Copyright © 1981, Wiley Blackwell. All rights reserved
Scientific Publication
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