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篇名
Rhizobia symbiosis of seven leguminous species growing along Xindian riverbank of Northern Taiwan
並列篇名
Rhizobia symbiosis of seven leguminous species growing along Xindian riverbank of Northern Taiwan
作者 Cheng-Tai Huang (Cheng-Tai Huang)劉啟德 (Chi-Te Liu)高文媛 (Wen-Yuan Kao)
英文摘要
Legume-rhizobia symbioses of seven leguminous species growing along Xindian riverbank of Northern Taiwan were investigated in this study. These legumes form either determinate or indeterminate types of root nodules. The determinate nodules of Alysicarpus vaginalis, Desmodium. triflorum, D. heterophyllum, Sesbania cannabina and the indeterminate nodules of Mimosa pudica harbored bacteroids of morphological uniformity (length of 1-3μm), while the indeterminate nodules of Crotalaria zanzibarica and Trifolium repens contained bacteroids of highly pleomorphism (size varying from 1 to 5μm). The enclosed bacteria were isolated from respective nodules, and twenty slow-growing and nine fast-growing rhizobial isolates were recovered. The slow-growing isolates were classified to the genus Bradyrhizobium based on the 16S rRNA sequences, whereas the fast-growing rhizobia comprise four genera, Neorhizobium, Rhizobium, Cupriavidus and Paraburkholderia. Results of stable isotope analyses revealed that the seven leguminous species had similar and consistently negativeδ15N values in leaves (mean of -1.2‰), whereas the values were positive (varying from 3.7 to 7.3‰) in the nodules. These values were significantly higher in the indeterminate nodules than those in the determinate ones. In addition, variations in the values of leafδ13C (varying from -29 to -34‰) among the seven legumes were measured, indicating their photosynthetic water use efficiencies were different. This is the first field survey to report the rhizobial diversity and the nutrient relationships of sympatric legume in Taiwan.
起訖頁 7-15
關鍵詞 Legume-rhizobia symbiosis16S rRNA geneStable nitrogen and Carbon isotope ratios
刊名 TAIWANIA  
期數 201803 (63:1期)
出版單位 臺灣大學生命科學院;台灣生物多樣性協會
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該期刊-下一篇 Community structure and regeneration status of tree species in Eastern Himalaya: A case study from Neora Valley National Park, West Bengal, India
 

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