Mechanisms of symbiotic evolution and N2O mitigation of soybean bradyrhizobia
Project/Area Number |
26252065
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Applied molecular and cellular biology
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Research Institution | Tohoku University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
佐藤 修正 東北大学, 生命科学研究科, 准教授 (70370921)
内田 隆史 東北大学, (連合)農学研究科(研究院), 教授 (80312239)
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Project Period (FY) |
2014-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥40,300,000 (Direct Cost: ¥31,000,000、Indirect Cost: ¥9,300,000)
Fiscal Year 2016: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
Fiscal Year 2015: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Fiscal Year 2014: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
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Keywords | 生物間相互作用 / 共生 / 脱窒 / タンパク質分泌系 / エフェクター / 根粒菌 / ダイズ / 病原システム / 温室効果ガス / アンチターミネーション |
Outline of Final Research Achievements |
Rj2 restricts nodulation by specific rhizobial strains including Bradyrhizobium diazoefficiens USDA122. We identified a T3SS effector gene that induces the incompatibility to Rj2-soybeans. These results suggested that hosts monitor the rhizobial T3SS effector during infection and reject nodulation via host R protein. B. diazoefficiens is able to scavenge the greenhouse gas N2O through the N2O reductase. Comparative analysis of Nos(++) mutant genomes showed that nasS mutation of resulted in Nos(++) phenotype. nasS mutation induced nosZ via NasT. NO3(-) addition dissociated the NasS-NasT complex in vitro, suggesting the release of the activator NasT. Disruption of nasT led to a marked decrease in nosZ transcription. Thus NasST regulates the NO3(-) -mediated response of nosZ gene. EMSA analysis suggested that nos expression is subjected to antitermination on both H1 and H2 hairpins upstream of nosR.
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Report
(4 results)
Research Products
(61 results)
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[Journal Article] Metagenomic Analysis Revealed Methylamine and Ureide Utilization of Soybean-Associated <i>Methylobacterium</i>2016
Author(s)
Tomoyuki Minami, Misue Anda, Hisayuki Mitsui, Masayuki Sugawara, Takakazu Kaneko, Shusei Sato, Seishi Ikeda, Takashi Okubo, Hirohito Tsurumaru, Kiwamu Minamisawa.
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Journal Title
Microbes and Environments
Volume: 31
Issue: 3
Pages: 268-278
DOI
NAID
ISSN
1342-6311, 1347-4405
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Sulfur Fertilization Changes the Community Structure of Rice Root-, and Soil- Associated Bacteria2016
Author(s)
Sachiko Masuda, Zhihua Bao, Takashi Okubo, Kazuhiro Sasaki, Seishi Ikeda, Ryo Shinoda, Mizue Anda, Ryuji Kondo, Yumi Mori, Kiwamu Minamisawa
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Journal Title
Microbes and Environments
Volume: 31
Issue: 1
Pages: 70-75
DOI
NAID
ISSN
1342-6311, 1347-4405
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Preference of endophytic bradyrhizobia in different rice cultivars and the implication of rice endophyte evolution2015
Author(s)
Piromyou, P., T. Greetatorn, K. Teamtisong, T. Okubo, R. Shinoda, A. Nuntakij, P. Tittabutr, N. Boonkerd, K. Minamisawa, and N. Teaumroong
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Journal Title
Appl. Environ. Microbiol.
Volume: in press
Issue: 9
Pages: 3049-3061
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Elevated atmospheric CO2 levels affect community structure of rice root-associated bacteria2015
Author(s)
Takashi Okubo, Dongyan Liu, Hirohito Tsurumaru, Seishi Ikeda, Susumu Asakawa, Takeshi Tokida, Kanako Tago, Masahito Hayatsu, Naohiro Aoki, Ken Ishimaru, Kazuhiro Ujiie, Yasuhiro Usui, Hirofumi Nakamura, Hidemitsu Sakai, Kentaro Hayashi, Toshihiro Hasegawa and Kiwamu Minamisawa
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Journal Title
Frontiers in Microbiology
Volume: 6
Pages: 1-8
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Metagenomic Analysis of the Bacterial Community Associated with the Taproot of Sugar Beet2015
Author(s)
Hirohito Tsurumaru, Takashi Okubo, Kazuyuki Okazaki, Megumi Hashimoto, Kaori Kakizaki, Eiko Hanzawa, Hiroyuki Takahashi, Noriyuki Asanome, Fukuyo Tanaka, Yasuyo Sekiyama, Seishi Ikeda, and Kimwamu Minamisawa
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Journal Title
Microbes and Environments
Volume: 30
Issue: 1
Pages: 63-69
DOI
NAID
ISSN
1342-6311, 1347-4405
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Characterization of Leaf Blade- and Leaf Sheath-Associated Bacterial Communities and Assessment of Their Responses to Environmental Changes in CO<sub>2</sub>, Temperature, and Nitrogen Levels under Field Conditions2015
Author(s)
Seishi Ikeda, Takeshi Tokida, Hirofumi Nakamura, Hidemitsu Sakai, Yasuhiro Usui, Takashi Okubo, Kanako Tago, Kentaro Hayashi, Yasuyo Sekiyama, Hiroshi Ono, Satoru Tomita, Masahito Hayatsu, Toshihiro Hasegawa, and Kiwamu Minamisawa
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Journal Title
Microbes and Environments
Volume: 30
Issue: 1
Pages: 51-62
DOI
NAID
ISSN
1342-6311, 1347-4405
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Presentation] Frontiers of plant-associated bacteria2016
Author(s)
Kiwamu Minamisawa
Organizer
4th Asian Conference Plant-Microbe Symbiosis and Nitrogen Fixation (4APMNF)
Place of Presentation
PARKROYAL Penang Resort(Penang, Malaysia)
Year and Date
2016-10-16
Related Report
Int'l Joint Research / Invited
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