Pii: S0734-9750(99)00014-2
نویسندگان
چکیده
The use of phosphate solubilizing bacteria as inoculants simultaneously increases P uptake by the plant and crop yield. Strains from the genera Pseudomonas, Bacillus and Rhizobium are among the most powerful phosphate solubilizers. The principal mechanism for mineral phosphate solubilization is the production of organic acids, and acid phosphatases play a major role in the mineralization of organic phosphorous in soil. Several phosphatase-encoding genes have been cloned and characterized and a few genes involved in mineral phosphate solubilization have been isolated. Therefore, genetic manipulation of phosphate-solubilizing bacteria to improve their ability to improve plant growth may include cloning genes involved in both mineral and organic phosphate solubilization, followed by their expression in selected rhizobacterial strains. Chromosomal insertion of these genes under appropriate promoters is an interesting approach. © 1999 Elsevier Science Inc. All rights reserved.
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Pii: S0734-9750(99)00034-8
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This review discusses the debittering enzyme naringinase and its essential role in the commercial processing of citrus fruit juice. Applications of this enzyme in other areas are identified. Characterization of the enzyme is detailed and its immobilized preparations are discussed. Production of microbial naringinase by fermentation is described. © 2000 Elsevier Science Inc. All rights reserved.
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