This paper concludes totally more than 600 species in 170 genera of sulfur-circulating prokaryotes,including more than 150 species in 48 genera with thium,more than 20 species in 6 genera belong to green sulfur bacteria,nearly 100 species in 33 genera belong to purple sulfur bacteria,56 species in 23 genera with sulfur,more than 210 species in 50 genera with desulfurization (sulfate reduction),and 3 species and 1 genus with sulfur dismutation.According to the properties of these sulfur-circulating prokaryotes,they are classified as sulfur oxidation,sulfur reduction and sulfur dismutation and of vital importance to sulfur circulation in nature.%总结迄今已经发现鉴定的原核微生物中榴菌48属150多种,绿硫菌6属20余种,紫硫菌33属近百种,硫菌23属56种,脱硫化功能菌50属210多种,脱硫和脱硫化物功能菌20多属50多种,硫歧化菌1属3种,共计170余属600余种.这些硫菌根据功能分类,大致上可以分成硫氧化、硫还原和硫歧化菌,对于自然界硫循环起着至关重要的作用.
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