Rhizobium leucaenae strain:CPAO 29.8 Genome sequencing and assembly. Rhizobium leucaenae strain:CPAO 29.8

Biological nitrogen fixation is a key process for agriculture sustainability and it is particularly important in legumes as common bean (Phaseolus vulgaris L.), that represents the most important source of protein for the low-income population of South America, Africa and some Asian countries. Rhizobium leucaenae is one of the rhizobial species capable of nodulating and fixing nitrogen with common bean. It is abundantly found in South America, particularly in the Brazilian Cerrados, and it is particularly important for its high tolerance of environmental stresses. Strain CPAO 29.8 has been isolated from a leucaena (Leucaena leucocephala L.) nodule in the State of Mato Grosso do Sul, Brazil, and it is very effective in fixing nitrogen with both common bean and leucaena. The genomic data of R. leucaenae CPAO 29.8 is important to understand the successful symbiotic performance of the strain under tropical stressing conditions.

生物固氮（Biological nitrogen fixation）是支撑农业可持续发展的关键过程，在普通菜豆（Phaseolus vulgaris L.）等豆科作物中尤为重要。普通菜豆是南美、非洲及部分亚洲国家低收入人群的核心蛋白质来源。银合欢根瘤菌（Rhizobium leucaenae）是可与普通菜豆结瘤并实现固氮的根瘤菌种之一。该菌种在南美地区广泛分布，尤以巴西塞拉多（Brazilian Cerrados）生态区为甚，因其对环境胁迫具备极高耐受性而极具研究与应用价值。菌株CPAO 29.8分离自巴西南马托格罗索州的银合欢（Leucaena leucocephala L.）根瘤，对普通菜豆与银合欢均展现出高效的固氮能力。解析银合欢根瘤菌CPAO 29.8的基因组数据，有助于阐明该菌株在热带胁迫环境下的优异共生固氮机制。