Publication Date:
2008-08-02
Description:
Although analyses of chlorophyll d (Chl d)-dominated oxygenic photosystems have been conducted since their discovery 12 years ago, Chl d distribution in the environment and quantitative importance for aquatic photosynthesis remain to be investigated. We analyzed the pigment compositions of surface sediments and detected Chl d and its derivatives from diverse aquatic environments. Our data show that the viable habitat for Chl d-producing phototrophs extends across salinities of 0 to 50 practical salinity units and temperatures of 1 degrees to 40 degrees C, suggesting that Chl d production can be ubiquitously observed in aquatic environments that receive near-infrared light. The relative abundances of Chl d derivatives over that of Chl a derivatives in the studied samples are up to 4%, further suggesting that Chl d-based photosynthesis plays a quantitatively important role in the aquatic photosynthesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kashiyama, Y -- Miyashita, H -- Ohkubo, S -- Ogawa, N O -- Chikaraishi, Y -- Takano, Y -- Suga, H -- Toyofuku, T -- Nomaki, H -- Kitazato, H -- Nagata, T -- Ohkouchi, N -- New York, N.Y. -- Science. 2008 Aug 1;321(5889):658. doi: 10.1126/science.1158761.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan. chiro@jamstec.go.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18669855" target="_blank"〉PubMed〈/a〉
Keywords:
Chlorophyll/*analysis/*metabolism
;
Cyanobacteria/growth & development/*metabolism
;
*Ecosystem
;
Fresh Water/chemistry
;
Geologic Sediments/*chemistry
;
*Photosynthesis
;
Phototrophic Processes
;
Salinity
;
Seawater/chemistry
;
Temperature
;
*Water/chemistry
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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