中文摘要：

采用常规、含Cd（2＋）和含Pb（2＋）的马丁氏培养基,对云南省会泽县废弃铅锌矿区和非矿区小花南芥（Arabisalpine）根际真菌进行分离,将分离的菌株接种到含不同浓度（0、0.05、0.5、5mmolL（-1））Cd（2＋）的马铃薯葡萄糖培养液中,比较废弃铅锌矿区和非矿区小花南芥根际真菌的镉耐性.结果表明：Cd（2＋）显著抑制铅锌矿区和非矿区小花南芥根际真菌的生长;常规、含Cd（2＋）和含Pb（2＋）的马丁氏培养基分离的铅锌矿区小花南芥根际真菌Cd（2＋）的生长半数抑制浓度（EC50值）平均值和最大值均明显大于非矿区,表明铅锌矿区小花南芥根际真菌对Cd（2＋）的耐性强于非矿区;3种培养基分离的真菌中,含Cd（2＋）培养基分离的铅锌矿区小花南芥根际真菌对Cd（2＋）的耐性最强.表3参26

英文摘要：

Culturable rhizosphere fungi of Arabis alpina in abandoned lead-zinc mining and non-mining area in Huize, Yunnan, China were isolated with normal, Cd~（2＋） and Pb~（2＋） containing Martin’s media. Cd~（2＋） tolerance of those isolated fungi were investigated with potato dextrose fluid media containing 0, 0.05, 0.5 and 5 mmol L~（-1） Cd~（2＋）. The results showed that the growth of rhizosphere fungi of Arenaria orbiculata in the abandoned lead-zinc mining and non-mining area was signif icantly suppressed by Cd~（2＋）. The mean and maximum lethal concentrations of 50% （EC50 value） of Cd~（2＋） to the rhizosphere fungi in the abandoned lead-zinc mining area isolated by normal, Cd~（2＋） and Pb~（2＋） containing media were obviously greater than those in the non-mining area, which indicated that Cd~（2＋） tolerance of the rhizosphere fungi in the abandoned lead-zinc mining area was greater than that in the non-mining area. Among these fungi isolated by these 3 media, the rhizosphere fungi of A. alpina in the abandoned lead-zinc mining area isolated by Cd~（2＋） containing medium were the most tolerant to Cd~（2＋）. Tab3, Ref26