| 贵州黄壤地区葛藤根际溶磷细菌溶磷、分泌IAA及其它特性研究 |
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| 引用本文： | 李显刚,姚拓,王小利,舒健虹,陆瑞霞.贵州黄壤地区葛藤根际溶磷细菌溶磷、分泌IAA及其它特性研究[J].草原与草坪,2012,32(1):18-23. |
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| 作者姓名： | 李显刚 姚拓 王小利 舒健虹 陆瑞霞 |
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| 作者单位： | 1. 甘肃农业大学草业学院／草业生态系统教育部重点实验室／甘肃省草业工程实验室／中一美草地畜牧业可持续发展研究中心,甘肃兰州,730070
2. 贵州省草业研究所,贵州贵阳,550006 |
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| 基金项目： | 贵州省农业攻关项目，贵州省社会发展攻关项目(黔科合NY字[201113104号)，国家自然基金 |
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| 摘 要： | 从葛藤(Pueraria lobata)根际分离出8株具有较强溶解无机磷能力的菌株,溶磷圈法测定菌株的HD/CD值(溶磷圈直径HD,菌落直径CD)在2.14～6.73,液体振荡培养下菌株对磷酸钙的溶解量在72.28～159.15mg/L,菌株培养液pH值较初始培养基的pH值7.0均下降。菌株GTR2和GTR15溶解磷酸钙(分别为159.15mg/L、138.72mg/L)及分泌IAA能力(分别为12.71mg/L、14.44mg/L)均较大,且均为碱性菌株,能在甘露醇等多种碳源上较好生长。综合各菌株的溶磷及分泌IAA能力,菌株GTR2和GTR15有望成为高效微生物磷肥接种剂的优良菌种。
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| 关 键 词： | 葛藤溶磷细菌 溶磷 分泌IAA |
Characteristics and capacity of IAA producing of phosphobacteria isolated from rhizosphere of Pueraria lobata in yellow loam of Guizhou |
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| LI Xian-gang,YAO Tuo,WANG Xiao-li,SHU Jian-hong,LU Rui-xia.Characteristics and capacity of IAA producing of phosphobacteria isolated from rhizosphere of Pueraria lobata in yellow loam of Guizhou[J].Grassland and Turf,2012,32(1):18-23. |
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| Authors: | LI Xian-gang YAO Tuo WANG Xiao-li SHU Jian-hong LU Rui-xia |
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| Institution: | 1.College of Pratacultural Science,Gansu Agricultural University/Key Laboratory of Grassland Ecosystem,Ministry of Education/Pratacultural Engineering Laboratory of Gansu Province/Sino-U.S. Centers for Grazingland Ecosystem Sustainability Lanzhou 730070,China; 2.Guizhou Institute of Prataculture,Guiyang 550006,China) |
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| Abstract: | In this study,8 strains of bacteria strains with stronger phosphorus solubilizing ability were isolated from Pueraria lobata rhizosphere.Their HD/CD ratios ranged from 2.14 to 6.73 by means of phosphorus hole and 8 strains which have a dissolving phosphorus capacity of 72.28~159.15 mg/L in broth medium with calcium phosphate.Meanwhile,the pH of the liquid medium decreased significantly after inoculated phosphate-dissolving bacteria.Strain GTR2 and GTR15 had the maximum capacity of producing IAA(12.71 mg/L and 14.44 mg/L) and dissolving calcium phosphate(159.15 mg/L and 138.72 mg/L).They were the alkaline strains,and could be better growth on mannitol and other carbon sources.According to the capacity of dissolving phosphate and producing IAA,strain GTR2 and GTR15 are potential microbial resources for developing high efficiency biological phosphorus fertilizer. |
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| Keywords: | phosphate-dissolving bacteria capacity of phosphate solubilization IAA Pueraria lobata |
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