Selection of Acac ia Rhizobium Which Have the Ability to D issolve Phosphorus
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1.
Research Institute of Trop ical Forestry, CAF, Guangzhou 510520, Guangdong, China
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Received Date:
2007-04-11
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Abstract
Parts of rhizobium collected from Hainan, Fujian, Guangdong and the specimen stored in the laboratory ofResearch Institute of Trop ical Forestry were used to study their phosphorus-dissolving ability. 40 isolates wereselected from over 200 rhizobium isolates. By checking their ability of dissolving inorganic and organic phosphorusin solid media and liquid media, 2 isolates ( G7-3 and DH001) which had stronger phosphorus-dissolving abilitywere chosen. The quantity of phosphorus G7-3 could dissolved in inorganic and organic media were 4. 142 μg·mL-1 and 9. 944 μg ·mL-1 , respectively, which were significantly different from the others. In inorganicphosphorus liquid media, DH001 inμg thalli dissolved 0. 086 7 μg of phosphorus, which had notable differencewith the others. 16S rDNA sequence was used to analyze the isolates selected, it is found that all the isolateswererhizobium excep t H1-1-1 and H2-1-2.
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Proportional views
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