我国冰核活性细菌的优势种类调查与研究

１９８６￣１９９４年，从国内１７个省、市、自治区的６８种植物上分离到了２５０株冰核活性细菌，经鉴定分别属于３个属的１７个种或致病变种。其中出现最多的是菠萝欧文氏菌，共１３３株，占总数的５３．２％，其次是丁香假单胞菌群，共７０株，占２８％，其它种类的冰核活性细菌共４７株，仅占１８．８％。因此，我国冰核活性细菌的优势菌种是Ｅ．ａｎａｎａｓ，其次是Ｐ．ｓｙｒｉｎｇａｅ ｐｖｓ。在低纬度的南方地区中Ｅ．ａ

INVESTIGATION ON THE DOMINANT SPECIES OF ICE NUCLEATION ACTIVE BACTERIA IN CHINA

strains of INA bacteria were isolated from 68 species of plants in 17 provinces,cities and autonomous regions in China during 1986 to 1994. The identification results show that they belonged to 17 species(or pathovars)of 3 genera respectively.Among them,.133 strains are Erwinia ananas. accounting for 53.2%of total amount.The next group is Pesudomonas syingae pvs.The total is 70 strains,accounting for 28% of total amount.The other species of INA bacteria have 47 strains,accounting for only 18. 8% of total amount.Thus,the dominant species of INA bacteria in China is E.ananas,and then P.syringae pvs.grop.The dominance of E.ananas was more obvious in low latitude of southern areas.In high latitude of nouthern areas such as Beijing, Pseudomonas group was of a little dominance.INA bacteria of genera Xanthomonas were found mostly on family Gramineae plants in areas where the weather was more cold.