Diversity of thermophilic archaeal isolates from hot springs in Japan

Takashi Itoh; Naoto Yoshikawa; Tomonori Takashina

doi:10.1117/12.623754

22 September 2005 Diversity of thermophilic archaeal isolates from hot springs in Japan

Takashi Itoh, Naoto Yoshikawa, Tomonori Takashina

Proceedings Volume 5906, Astrobiology and Planetary Missions; 590607 (2005) https://doi.org/10.1117/12.623754
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

In the light of the significance of extremophiles as model organisms to access possible extraterrestiral life, we provide a short review of the systematics of thermophilic Archaea, and introduce our exploratory research of novel thermophilic Archaea from hot springs in Japan. Up to date, we have isolated 162 strains of the thermophilic Archaea from hot springs in Japan by the enrichment method or the most probable number/PCR method, and the 16S rRNA gene sequences were determined to reveal their phylogenetic diversity. The sequence comparison illustrated that the isolates belonged to the orders Sulfolobales (117 isolates) , Thermoproteales (29 isolates), Desulfurococcales (8 isolates) and Thermoplasmatales (8 isolates), and there were six separate lineages representing new genera, and at least seven new species as predicted by the phylogenetic distance to known species. The collection of isolates not only included novel taxa but would give some implication for a necessity to reevaluate the current taxonomy of the thermophilic Archaea.

Citation Download Citation

Takashi Itoh, Naoto Yoshikawa, and Tomonori Takashina "Diversity of thermophilic archaeal isolates from hot springs in Japan", Proc. SPIE 5906, Astrobiology and Planetary Missions, 590607 (22 September 2005); https://doi.org/10.1117/12.623754

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available