Analysis of the light-responsive functions in the phyllosphere bacteria

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K18671
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Applied microbiology
• Research Institution: Kyoto Gakuen University
• Principal Investigator: IGUCHI Hiroyuki 京都学園大学, バイオ環境学部, 講師 (30712020)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 葉面細菌 / 光応答 / 光受容体 / ロドプシン / ストレス耐性 / 色素生産

Outline of Final Research Achievements

This study analyzed the phyllosphere bacteria grown under light conditions, to reveal the bacterial ecology and physiology in the phyllosphere where the sun light intensely irradiates. From plant leaves in natural environments, the bacteria that produce the yellow pigments under light condition were found. In the Methylobacterium strain, it was revealed that the bacteria could modulate the abilities of stress resistances and plant colonization through the light receptor proteins. Some strains of Methylobacterium encode the rhodopsin protein. The rhodopsin was indicated to function as proton pump, thus possibly playing a role in production of biological energy from sun light for growth of the bacteria.

Free Research Field

応用微生物学、環境微生物学