Evidence of global chlorophyll d
Evidence of global chlorophyll d
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DOI：
10.1126/science.1158761
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发表时间：
2008-08-01
期刊：
影响因子：
56.9
通讯作者：
Ohkouchi, N.
中科院分区：
文献类型：
--
作者：
Kashiyama, Y.;Miyashita, H.;Ohkouchi, N.
虽然自12年前发现以来，已经对叶绿素d（Chl d）主导的产氧光系统进行了分析，但Chl d在环境中的分布以及对水生光合作用的定量重要性仍有待研究。我们分析了表层沉积物的色素组成，并检测Chl d及其衍生物从不同的水环境。我们的数据表明，叶绿素d生产光养生物的可行栖息地跨越0至50个实际盐度单位的盐度和1至40 ℃的温度，这表明叶绿素d生产可以在接收近红外光的水生环境中普遍观察到。在所研究的样品中，Chl d衍生物相对于Chl a衍生物的相对丰度高达4%，进一步表明基于Chl d的光合作用在水生光合作用中起着定量的重要作用。
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 to 40 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.