Isolation and Identification of Phosphate Solubilizing Bacteria from Chinese Cabbage and Their Effect on Growth and Phosphorus Utilization of Plants
POONGUZHALI SELVARAJ, Madhaiyan Munusamy, Sa Tongmin,
소속 상세정보
( POONGUZHALI SELVARAJ )
충북대학교 농화학과
( Madhaiyan Munusamy )
충북대학교 농화학과
( Sa Tongmin )
충북대학교 농화학과
KMID : 0545120080180040773
Abstract
Phosphate solubilizing bacteria (PSB) were isolated from the rhizosphere of Chinese cabbage and screened on the basis of their solubilization of inorganic tricalcium phosphate in liquid cultures. Ten strains that had higher solubilization potential were selected, and they also produced indole-3-acetic acid, 1-aminocyclopropane-1-carboxylate (ACC) deaminase, and siderophores. The strains were identified to be members of Pseudomonas, by 16S rDNA sequence analysis. Seed bacterization with PSB strains increased the root elongation and biomass of Chinese cabbage in seedling culture, although they had no effect on phosphorus uptake of plants. The plant growth promotion by PSB in this study could be due to the production of phytohormones or mechanisms other than phosphate solubilization, since they had no effect on P nutrition.
키워드
Phosphate solubilizing bacteria;Pseudomonas;1-aminocyclopropane-1-carboxylate;indole-3-acetic acid;acid phosphatase
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