Potassium Releasing Activity and Identification of LJP21 From  Rhizosphere Soil of Paeonia ostii ‘Fengdan’(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Potassium Releasing Activity and Identification of LJP21 From  Rhizosphere Soil of Paeonia ostii ‘Fengdan’

Author(s):: SUN Huizhong; SONG Yueqin; WANG Xiaodong; ZHANG Youfu; HOU Xiaogai; (College of Agriculture,Henan University of Science and Technology,Luoyang,Henan 471003)

Keywords:: Paeonia ostii‘Fengdan’; potassium bacteria; isolation; identification

Abstract:: Rhizosphere soil of Paeonia ostii ‘Fengdan’ was used as test material.The isolation，activity evaluation and identification of potassium bacteria in the rhizosphere environment of Paeonia ostii ‘Fengdan’ were studied by using dilution plate method.The results showed that four strains LJP3，LJP7，LJP21，LJP23 of potassium bacteria were isolated.After 7 days fermentation under the condition of 28 ℃，180 r?min-1，the potassium content in fermentation liquid of LJP21 reached a maximum of 2.6 μg?mL-1.By observing the phenotypic characteristics，biochemical characteristics and 16S rDNA analysis，strain LJP21 was determined to belonged to the genus Exiguobacterium，and tentatively named Exiguobacterium sp.LJP21.Strain LJP21 could be used as a reserve strain in fertilizer or biofertilizer development.

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Last Update: 2017-04-19