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蓝光对水稻幼苗碳水化合物和蛋白质代谢的调节

李韶山, 潘瑞炽

华南师范大学生物系. 广东,广州 510631

摘要

分别以白光和黑暗处理为对照, 蓝光处理10d的水稻幼苗碳水化合物含量下降, 蛋白质含量 增加, 亚胺环己酮可抑制蓝光引起的蛋白质含量增加。蓝光处理的水稻幼苗总氨基酸含量比白光和黑暗处理分别提高12%和36%, 游离态Glu、Asp含量也比对照增加。蓝光处理促进水稻幼苗的呼吸作用, 对丙酮酸激酶、硝酸还原酶、谷氨酰胺合成酶、谷氨酸合酶和转氨酶的活性表现出一致的促进效应。图7表2参19

关键词： 蓝光; 水稻; 碳水化合物; 蛋白质; 氨基酸

Effect of blue light on the metabolism of carbohydrate and protein in rice (Oryza sativa L.) seedlings

Li Shaoshan, Pan Ruichi

Department of Biology, South China Normal University. Guangzhou 510631,Guangdong

Abstract

Carbohydrate content in rice (Oryza saliva L.) seedlings grown under blue light decreased, while nitrogenous substances accumulated. As compared with white light or dark treatment, content of all kinds of carbohydrates decreased, and the decrease of starch was most significant. Blue linght promoted the increase of protiein content, which could be inhibited by cycloheximide (CHX). Rice seedlings exposed to blue light had a greater amount of total amino acids (hydrolysate of protein) than those exposed to white light or in the dark. Free glutamate and aspartate, which occupy central positions in the metabolism of amino acids, were increased in rice seedlings treated by blue light. Blue light promoted the respiration of both etiolated and green seedlings in which photosynthesis was inhibited by DCMU. The activity of pyruvate kinase was increased by blue light. At the same nitrate concentration (50 mmol/L), blue light was better than white light for nitrate reductase induction. The activity of glutamine synthetase (GS), glutamate synthase (GOGAT), GOT and GPT were increased in rice seedlings grown under blue light.

Key words: Amino acid;Blue light carbohydrate;Protein;Rice(Oryza sotiva L.) ;

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引用本文：

李韶山, 潘瑞炽. 蓝光对水稻幼苗碳水化合物和蛋白质代谢的调节[J]. 生理学报 1995; 47 (1): .

Li Shaoshan, Pan Ruichi. Effect of blue light on the metabolism of carbohydrate and protein in rice (Oryza sativa L.) seedlings. Acta Physiol Sin 1995; 47 (1): (in Chinese with English abstract).