Diversity of Bradyrhizobium in Non-Leguminous Sorghum Plants: B. ottawaense Isolates Unique in Genes for N

Autor: Sawa, Wasai-Hara, Shintaro, Hara, Takashi, Morikawa, Masayuki, Sugawara, Hideto, Takami, Junich, Yoneda, Tsuyoshi, Tokunaga, Kiwamu, Minamisawa
Rok vydání: 2020
Předmět:
Zdroj: Microbes and Environments
ISSN: 1347-4405
Popis: Diverse members of Bradyrhizobium diazoefficiens, B. japonicum, and B. ottawaense were isolated from the roots of field-grown sorghum plants in Fukushima, and classified into “Rhizobia” with nodulated soybeans, “Free-living diazotrophs”, and “Non-diazotrophs” by nitrogen fixation and nodulation assays. Genome analyses revealed that B. ottawaense members possessed genes for N2O reduction, but lacked those for the Type VI secretion system (T6SS). T6SS is a new bacterial weapon against microbial competitors. Since T6SS-possessing B. diazoefficiens and B. japonicum have mainly been isolated from soybean nodules in Japan, T6SS-lacking B. ottawaense members may be a cryptic lineage of soybean bradyrhizobia in Japan.
Databáze: OpenAIRE