Gluconic acid production by bacteria to liberate phosphorus from insoluble phosphate complexes

Matthews Stella, . and Halimi Mohd Saud, . Gluconic acid production by bacteria to liberate phosphorus from insoluble phosphate complexes. pp. 41-53. ISSN 1394-9829

Ten indigenous bacterial isolates were identified as efficient mineral phosphate solubilisers namely 7 strains of Klebsiella pneumoniae 2 strains of Enterobacter aerogenes and 1 strain of Pseudomonas aeruginosa. All the ten strains were able to dissolve calcium phosphate (Ca-P) ferric phosphate (Fe-P) and aluminium phosphate (Al-P) efficiently. STMPSB 8 (Klebsiella pneumoniae) could be designated as the best mineral P solubiliser for all the three insoluble mineral phosphates as it exhibited high solubilisation capacity for Ca-P Fe-P and Al-P whereas STMPSB 6 (Enterobacter aerogenes) STMPSB 4 (Enterobacter aerogenes) and STMPSB 8 (Klebsiella pneumonia) were regarded as good gluconic acid producing bacteria. A strong correlation of 0.795 significant at the level of 0.01 was observed between gluconic acid concentration and calcium phosphate solubilisation. The detection of pyrroloquinoline quinone (pqq C) gene in eight of the bacterial isolates indicates that direct oxidation pathway was used during the biosynthesis of gluconic acid with the aid of pyrroloquinoline quinone cofactor.

Full text available from: Official URL: http://jtafs.mardi.gov.my/jtafs/43-1/gluconic.pdf

Abstract

Ten indigenous bacterial isolates were identified as efficient mineral phosphate solubilisers namely 7 strains of Klebsiella pneumoniae 2 strains of Enterobacter aerogenes and 1 strain of Pseudomonas aeruginosa. All the ten strains were able to dissolve calcium phosphate (Ca-P) ferric phosphate (Fe-P) and aluminium phosphate (Al-P) efficiently. STMPSB 8 (Klebsiella pneumoniae) could be designated as the best mineral P solubiliser for all the three insoluble mineral phosphates as it exhibited high solubilisation capacity for Ca-P Fe-P and Al-P whereas STMPSB 6 (Enterobacter aerogenes) STMPSB 4 (Enterobacter aerogenes) and STMPSB 8 (Klebsiella pneumonia) were regarded as good gluconic acid producing bacteria. A strong correlation of 0.795 significant at the level of 0.01 was observed between gluconic acid concentration and calcium phosphate solubilisation. The detection of pyrroloquinoline quinone (pqq C) gene in eight of the bacterial isolates indicates that direct oxidation pathway was used during the biosynthesis of gluconic acid with the aid of pyrroloquinoline quinone cofactor.

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Item Type:	Article
AGROVOC Term:	Phosphates
AGROVOC Term:	Phosphorus
AGROVOC Term:	Solubilization
AGROVOC Term:	Klebsiella pneumoniae
AGROVOC Term:	Enterobacter aerogenes
AGROVOC Term:	Pseudomonas aeruginosa
AGROVOC Term:	Dissolution
AGROVOC Term:	Calcium phosphates
AGROVOC Term:	Solubilizing
AGROVOC Term:	Solubility
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:29
URI:	http://webagris.upm.edu.my/id/eprint/24418

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