TY - JOUR
T1 - A niche for cyanobacteria producing chlorophyll f within a microbial mat
AU - Ohkubo, Satoshi
AU - Miyashita, Hideaki
N1 - Funding Information:
This research was supported by MEXT KAKENHI Grant Number 21247005. We thank Katsumi Matsuura, Hiroyo Otaki and Satomi Iwata of Tokyo Metropolitan University for their help in sampling microbial mats at the Nakabusa hot spring. We also thank Yukako Hihara of Saitama University for lending a spectrophotometer to measure the absorption spectra of cyanobacteria in the growth experiments.
Publisher Copyright:
© 2017 International Society for Microbial Ecology All rights reserved.
PY - 2017/10/1
Y1 - 2017/10/1
N2 - Acquisition of additional photosynthetic pigments enables photosynthetic organisms to survive in particular niches. To reveal the ecological significance of chlorophyll (Chl) f, we investigated the distribution of Chl and cyanobacteria within two microbial mats. In a 7-mm-thick microbial mat beneath the running water of the Nakabusa hot spring, Japan, Chl f was only distributed 4.0-6.5 mm below the surface, where the intensity of far-red light (FR) was higher than that of photosynthetically active radiation (PAR). In the same mat, two ecotypes of Synechococcus and two ecotypes of Chl f-producing Leptolyngbya were detected in the upper and deeper layers, respectively. Only the Leptolyngbya strains could grow when FR was the sole light source. These results suggest that the deeper layer of the microbial mat was a habitat for Chl f-producing cyanobacteria, and Chl f enabled them to survive in a habitat with little PAR.
AB - Acquisition of additional photosynthetic pigments enables photosynthetic organisms to survive in particular niches. To reveal the ecological significance of chlorophyll (Chl) f, we investigated the distribution of Chl and cyanobacteria within two microbial mats. In a 7-mm-thick microbial mat beneath the running water of the Nakabusa hot spring, Japan, Chl f was only distributed 4.0-6.5 mm below the surface, where the intensity of far-red light (FR) was higher than that of photosynthetically active radiation (PAR). In the same mat, two ecotypes of Synechococcus and two ecotypes of Chl f-producing Leptolyngbya were detected in the upper and deeper layers, respectively. Only the Leptolyngbya strains could grow when FR was the sole light source. These results suggest that the deeper layer of the microbial mat was a habitat for Chl f-producing cyanobacteria, and Chl f enabled them to survive in a habitat with little PAR.
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U2 - 10.1038/ismej.2017.98
DO - 10.1038/ismej.2017.98
M3 - Article
C2 - 28622287
AN - SCOPUS:85029633399
SN - 1751-7362
VL - 11
SP - 2368
EP - 2378
JO - ISME Journal
JF - ISME Journal
IS - 10
ER -