Nodulation is crucial for the symbiosis between Rhizobia and plants, and 13 nod genes have been identified in Rhizobium leguminosarum biovar (bv.) viciae, which are responsible for the formation of nodules on plant ro...Nodulation is crucial for the symbiosis between Rhizobia and plants, and 13 nod genes have been identified in Rhizobium leguminosarum biovar (bv.) viciae, which are responsible for the formation of nodules on plant roots. The nodD, one of those nod genes, is an autoregulatory gene, which controls the expressions of all the rest nod genes in the展开更多
Better ties with China could help Japan’s economic recovery The Japanese political merrygo -round has spun out yet another new prime minister. On August 30, Yoshihiko Noda replaced Nao to Kan to become Japan’s third...Better ties with China could help Japan’s economic recovery The Japanese political merrygo -round has spun out yet another new prime minister. On August 30, Yoshihiko Noda replaced Nao to Kan to become Japan’s third prime minister in the last two years and sixth in the last five years. Observers展开更多
Thirty-nine rhizobial isolates were isolated from the root nodules of Glycyrrhiza uralensis and Glyeyrrhiza glabra, growing in the arid and semiarid regions of northwestern China, to test their taxonomic position and ...Thirty-nine rhizobial isolates were isolated from the root nodules of Glycyrrhiza uralensis and Glyeyrrhiza glabra, growing in the arid and semiarid regions of northwestern China, to test their taxonomic position and stress tolerance and to select one promising putative inoeulant strain for further studies. On the basis of 113 physiological and biochemical characteristics, the isolates were clustered into three groups. One isolate CCNWGX035 was found to have high tolerance to NaC1, pH, and temperature. By sequencing the 16S rDNA, isolate CCNWGX035 was placed in genus Mesorhizobium. Nodulation tests demonstrated that the isolate not only formed nitrogen-fixing nodules on its original host plant Glyeyrrhiza glabra, but also on Sophora vieiifolia, Lotus cornieulatus, Trifolium repens, Melilotus suaveolens, and Sophora alopecuroides. On the basis of sequence analysis of the nodA gene, isolate CCNWGX035 was closely related to strains of the genus Mesorhizobium, exhibiting some novel characteristics of root nodule bacteria.展开更多
文摘Nodulation is crucial for the symbiosis between Rhizobia and plants, and 13 nod genes have been identified in Rhizobium leguminosarum biovar (bv.) viciae, which are responsible for the formation of nodules on plant roots. The nodD, one of those nod genes, is an autoregulatory gene, which controls the expressions of all the rest nod genes in the
文摘Better ties with China could help Japan’s economic recovery The Japanese political merrygo -round has spun out yet another new prime minister. On August 30, Yoshihiko Noda replaced Nao to Kan to become Japan’s third prime minister in the last two years and sixth in the last five years. Observers
基金Project supported by the Program for the New Century Excellent Talents in University of China (No.NCET-04-0953)the Fund of Author of Chinese Excellent Doctor Degree Dissertation (No.200254)the National Natural Science Foundation of China (Nos.30470040 and 30670372).
文摘Thirty-nine rhizobial isolates were isolated from the root nodules of Glycyrrhiza uralensis and Glyeyrrhiza glabra, growing in the arid and semiarid regions of northwestern China, to test their taxonomic position and stress tolerance and to select one promising putative inoeulant strain for further studies. On the basis of 113 physiological and biochemical characteristics, the isolates were clustered into three groups. One isolate CCNWGX035 was found to have high tolerance to NaC1, pH, and temperature. By sequencing the 16S rDNA, isolate CCNWGX035 was placed in genus Mesorhizobium. Nodulation tests demonstrated that the isolate not only formed nitrogen-fixing nodules on its original host plant Glyeyrrhiza glabra, but also on Sophora vieiifolia, Lotus cornieulatus, Trifolium repens, Melilotus suaveolens, and Sophora alopecuroides. On the basis of sequence analysis of the nodA gene, isolate CCNWGX035 was closely related to strains of the genus Mesorhizobium, exhibiting some novel characteristics of root nodule bacteria.
