Rhizosphere is a textbook for microbial N cycle

Minamisawa, Kiwamu Graduate School of Life Sciences, Tohoku University The term “rhizosphere” was first coined in 1904 by Lorenz Hiltner in Germany, who had a special interest in N transformations around leguminous nodules in fields. Our group has revealed active N transformation incl
Posted On 06 10月 2015


Evaluating community-environment relationships along fine to broad taxonomic resolutions reveals evolutionary forces underlying community assembly

Lu, Hsiao-Pei1, Yeh, Yi-Chun1, Sastri, Akash2, Shiah, Fuh-Kwo3, Gong, Gwo-Ching4, Hsieh, Chih-hao1 1Institute of Oceanography, National Taiwan University, 2Ocean Networks Canada, University of Victoria, 3Research Center for Environmental Changes, Academia Sinica, 4Institute of Marine
Posted On 06 10月 2015


Novel transferable multi-drug resistance plasmid and macrolide resistance genes from Photobacterium damselae subsp. damselae isolated from seawater of an aquaculture site

Lisa, Nonaka Dokkyo Medical University, School of Medicine The emergence of drug-resistant bacteria in aquaculture environments is a problem in terms of fish production and human public health. The transferability of drug resistance genes is thought to be responsible for the wide diss
Posted On 06 10月 2015


Regulation of N2O reductase genes by the two-component system NasST in Bradyrhizobium diazoefficiens

Sanchez, Cristina Graduate School of Life Sciences, Tohoku University, Japan The greenhouse gas nitrous oxide (N2O) is emitted from soybean rhizosphere through the degradation of the root nodules at the late growth period. Soybean hosts endosymbiotic N2-fixing soil bacteria (rhizobia)
Posted On 06 10月 2015


Links between structure and function of aquatic bacterial communities

Yokokawa, Taichi1, Matsui, Kazuaki2, Miki, Takeshi3 1JAMSTEC, 2Kinki University, 3National Taiwan University Bacterial community in aquatic environments plays important roles in processes of organic matter degradation and remineralization. Concern that the relationship between bacteri
Posted On 06 10月 2015


Diversity in mycobacteria:Distribution, host specificity, morphology andgenome

Nishiuchi, Yukiko Toneyama Inst. Tuberculosis Res. Osaka City Univ. Med. Sch. The genus Mycobacterium consists of many species which are widely distributed throughout the global environment. M. tuberculosis is one of the major pathogens for human. Other mycobacterial species are calle
Posted On 06 10月 2015


Phylogenetic diversity and environmental distribution of denitrifying fungi

Sameshima-Saito, Reiko Shizuoka University Fungi are saprophytic organisms and play pivotal roles to degrade organic matter such as plant residue in soil ecosystems. Some fungi have been revealed to possess ability of nitrification and/or denitrification, and therefore the processes o
Posted On 06 10月 2015


Applications of nonlinear time series analysis to microbial ecology studies

Ushio, Masayuki1, Hsieh, Chih-hao2, Reiji, Masuda3, Michio, Kondoh1 1Ryukoku University, 2National Taiwan University, 3Kyoto University Microbial communities fundamentally drive ecosystem processes such as primary production and decomposition. However, mainly because of the high diver
Posted On 06 10月 2015


Most chlamydiae live in natural environments but not in humans. – What kinds of features do they need to cause human disease? –

Ishida Kuroki, Kasumi Department of Microbiology and Immunity, Nippon Medical School Chlamydiae are obligate intracellular bacteria and known as human pathogens. For example, Chlamydia trachomatis is not only a cause of preventable blindness, but also a common pathogen causing sexual
Posted On 06 10月 2015



包 智華1, 篠田 亮1, 大久保 卓1, 久保田 健吾2, 笠原 康裕3, 池田 成志4, 浅川 晋5, 南澤 究1 1東北大学大学院生命科学研究科, 2東北大大学院工学研究科, 3北海道大学低温科学研究所, 4北海道農業研究センター, 5名古屋大学大学院農学研究科   水田は温室効果ガスメタンの主な発生源の一つであり、水稲根圏に棲息するメタン酸化細菌はメタン酸化に貢献している。メタン酸化細菌はメタンを唯一の炭素源とエネルギー源として生育できる微生物である。これまで、これらのメタン酸化細菌のほとんどが窒素固定機能遺伝子を有し、窒素固定できることが研究室レベルで報
Posted On 06 10月 2015