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本文证实我国宁夏阿拉善黄鼠疫源地鼠疫菌株除 Leu~-外,尚有大量 Leu~+株存在。其分布与宿主、地区无关。宁夏灵武长爪沙土鼠疫源地鼠疫菌株除 Trp~-株外,尚有 Leu~-、Leu~+株存在。青海喜马拉雅旱獭疫源地,地处两山间的沟塘海拔4300公尺以下的玉树的下拉秀、囊谦的党拉、癿扎等地分离的鼠疫菌株为 His~-。地处海拔5000公尺以上的其他地方,则为 His~+。新疆北天山东段灰旱獭疫源地的鼠疫菌株,大部分为 Trp~-Thr~-,尚有少数 Ile~-Glu~-突变株。一般来说,鼠疫菌的营养突变与某种生化特征相关联。
This article confirms that there are a large number of Leu ~ + strains in the plague plague strains of Alashan yellow spot in Ningxia besides Leu ~ -. Its distribution has nothing to do with the host, region. In addition to the Trp ~ - strains, there are still Leu ~ - and Leu ~ + strains in the gerbils of Lingwu long claw gerbil in Ningxia. Qinghai Himalayan Marmota epidemic, located in the two mountain ditch 4300 meters below the elevation of Yushu’s pull-down show, the capsule of party pull, tie and other places isolated from the plague strains His ~ -. Located at an altitude of 5000 meters above the other places, then His ~ +. Most of the plague strains in the eastern part of northern Tianshan Mountains of the plague origin are Trp ~ -Thr ~ -, and a few Ile ~ -Glu ~ - mutants are still present. In general, vegetative mutation of Yersinia pestis is associated with certain biochemical characteristics.