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Excessive Cu and Zn affecting on distribution of the metals and activities of glycolytic and nitrogen incorporating key
Concentration of copper and zinc in isolated Suillus bovinus mycelia, used nutrient solution and 0.5 mol/L EDTA mycelia washing solution were measured to investigate the distribution of heavy metals in mycelia growth in excess copper or zinc nutrient solution. Treated with zinc, most of added zinc maintained in used solution, and 9.8%/14.6% was in/on mycelia in treatment, and in treetment 2 was 3.9%/8.0%in/on mycelia. In the copper applications, copper stimulated in more than on mycelis, i.e., 25.9%/4.5% in/on mycelia in treatment, and 7%/18.8% in/on mycelia while most of copper retained in used nutrient solution. Certain amount of copper or zinc uptake by mycelia led to pronounced influence on glycolysis and nitrogen incorporating process of Suillus bovinus, while the tested enzymes kept constant in treatment.In crude extracts of copper treatment 2 mycelia, activities of HK, PFK and GS were inhibited and decrease to 63%, 48% and 38% and GlDH ncreased by 68 % of the control, respectively. The behaviors of these tested enzymes toward sinc corresponded in general with that towards copper. The potential protection of Suillus bpvoninus for its host plant under excess copper or zinc threaten was discussed.
作 者： HUANG Yi TAO Shu 作者单位： Department of Urban and Environmental Sciences, Peking University, 刊 名： 环境科学学报(英文版) ISTIC SCI 英文刊名： JOURNAL OF ENVIRONMENTAL SCIENCES 年，卷(期)： 2001 13(3) 分类号： X142 X17 关键词：【Excessive Cu and Zn affecting on dis】相关文章：
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