荚膜红假单胞菌的自然选育及培养特性

Screening and Culturing Characteristics of Rhodopseudomonas Capsulata

从高产对虾塘底泥中分离到一株细胞产量较高的荚膜红假单胞菌（Ｒｈｏｄｏｐｓｅｕｄｏｍｏｎａｓｃａｐｓｕｌａｔａ）茵株Ｊ３２５，光照厌氧培养生长，实验表明：Ｊ３２５菌株生长的最适温度为２７．５—３０℃，最适ｐＨ值为６．５—７．５，最适浓度为２．５％～５．０％．光照强度为２０００—５０００ｌｘ，培养基中添加０．２５％－０．３５％酵母提取物能明显地促进细胞生长．

A high pnduchvity strain was isolated from foe mud of shrimp ponds, and was identified asRhodopseudomonas capsulata. The anaerobical incubahon testS shows that the optimum growth temperature of strainJ325 is 27.5-30 ℃, the optimum pH is 6.5-7.5, and the optimum density of NaCl is 2.5%~5.0%. When the lightintensity ranges 2 000 to 5 000 lx or the medium is added with 0.25%ro.35% yeast extract the growth of the cellscan be promoted.