Phylogenetic Diversity and Symbiotic Effectiveness of Root-Nodulating Bacteria Associated with Cowpea in the South-West Area of Japan
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概要
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The phylogenetic diversity of cowpea root-nodulating bacteria in the South-West of Japan was investigated using 60 isolates. Seeds of cowpea were aseptically sown in vermiculite and inoculated with a suspension of Cowpea Soil (CS) or Bean Soil (BS) or without a soil suspension as a control. CS and BS were collected from the Kyushu Universitys farm (Japan) at sites where cowpea and bean, respectively, have been cultivated previously. Based on an analysis of the 16S rRNA gene and the Internal Transcribed Spacer (ITS) sequence between the 16S and 23S rRNA genes, 56 isolates were assigned to the genus Bradyrhizobium, while one isolate was found to be closely related to the genus Ralstonia. The ITS-based phylogeny showed 53 isolates, 2 isolates, and 1 isolate, to be closely related to B. yuanmingense, B. elkanii and B. japonicum, respectively, suggesting that B. yuanmingense strains predominated in the soils. Among the isolates tested, B. yuanmingense TSC10 and TTC9 exhibited a greater symbiotic activity and could be considered efficient inoculants for cowpea.
- 2009-06-01
著者
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Saeki Yuichi
Department Of Biochemistry And Applied Biosciences Faculty Of Agriculture University Of Miyazaki
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SARR PAPA
Laboratory of Plant Nutrition, Division of Bioresource and Bioenvironmental Sciences, Graduate Schoo
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YAMAKAWA TAKEO
Laboratory of Plant Nutrition, Division of Soil Science and Plant production, Department of Plant Re
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FUJIMOTO SYUNSEI
Laboratory of Plant Nutrition, School of Agriculture, Kyushu University
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THAO HOANG
Laboratory of Plant Nutrition, Division of Bioresource and Bioenvironmental Sciences, Graduate Schoo
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MYINT AUNG
Laboratory of Plant Nutrition, Division of Bioresource and Bioenvironmental Sciences, Graduate Schoo
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Fujimoto Syunsei
Laboratory Of Plant Nutrition School Of Agriculture Kyushu University
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Yamakawa Takeo
Laboratory Of Plant Nutrition Division Of Soil Science And Plant Production Department Of Plant Reso
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Myint Aung
Laboratory Of Plant Nutrition Division Of Bioresource And Bioenvironmental Sciences Graduate School
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Saeki Yuichi
Department Of Agricultural Chemistry Faculty Of Agriculture Kyushu University
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Sarr Papa
Laboratory Of Plant Nutrition Division Of Bioresource And Bioenvironmental Sciences Graduate School
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Thao Hoang
Laboratory Of Plant Nutrition Division Of Bioresource And Bioenvironmental Sciences Graduate School
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Yamakawa Takeo
Laboratory Of Plant Nutrition Division Of Bioresource And Bioenvironmental Science Graduate School K
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