中文摘要：

作为沙漠生物地毯工程研究的组成部分,对荒漠地衣石果衣Endocarpon pusillum、节瘤微孢衣Acarospora nodulosa以及荒漠微孢衣A.schleicheri的共生菌藻进行了耐热性研究。结果表明,3种荒漠地衣的共生菌藻在湿润条件下对温度的最大忍受力仅为50℃,而在干燥条件下石果衣的共生菌藻的最大忍受力均为75℃,而其他两种地衣共生菌藻的最大忍受力均为80℃。3种荒漠地衣共生菌、藻分别对高温胁迫的耐受力,在干燥状态下均比在湿润状态下明显增高。

英文摘要：

This paper deals with the heat tolerance of mycobionts and phycobionts isolated from desert lichens Endocarpon pusillum, Acarospora nodulosa, and A. schleicheri. This study is a part of the research program of the desert biological carpet engineering. The results showed that the mycobionts and phycobionts of the three desert lichens can only tolerate the temperature of 50℃ under the moist conditions. However, under the arid conditions both the mycobiont and phycobiont of E pusillum can tolerate the temperature of 75℃, and those of the other two lichens can tolerate the temperature of 80℃. It is concluded that the high-temperature tolerance of mycobionts and phycobionts isolated from desert lichens is much stronger under arid conditions than that under moist conditions