植物中光合作用所需的特別色素（被稱作葉綠素）可以收獲陽光并將其轉(zhuǎn)換成為化學(xué)能。在過去的60年中,，人們已經(jīng)發(fā)現(xiàn)了4種在化學(xué)上截然不同的葉綠素,。 如今，科研人員揭示了第5種葉綠素（被稱作葉綠素-f）,。
他們是從生活在澳大利亞的鯊魚灣（Shark Bay）的某個細(xì)菌菌落中提取到這種葉綠素的。 Min Chen及其同事說,，這種新發(fā)現(xiàn)的葉綠素-f展現(xiàn)了一種比其它類型的葉綠素要更紅得多的吸收光譜,，其吸收光譜延伸到近紅外的范圍內(nèi)，使得這種葉綠素成為迄今所發(fā)現(xiàn)的最紅的葉綠素,。
他們的發(fā)現(xiàn)提示,，光合作用甚至可進(jìn)一步延伸至紅外波段。研究人員說,，這可能在將來導(dǎo)向新型生物能源的應(yīng)用,。（生物谷Bioon.com）
生物谷推薦原文出處：
Science DOI: 10.1126/science.1191127
A Red-Shifted Chlorophyll
Min Chen,1,* Martin Schliep,1 Robert D. Willows,2 Zheng-Li Cai,3 Brett A. Neilan,4 Hugo Scheer1,5
Chlorophylls are essential for light-harvesting and energy transduction in photosynthesis. Four chemically distinct varieties have been known for the past 60 years. Here, we report isolation of a fifth, which we designate chlorophyll f. Its in vitro absorption (706 nm) and fluorescence (722 nm) maxima are red-shifted compared to all other chlorophylls from oxygenic phototrophs. Based on the optical, mass, and nuclear magnetic resonance spectra, we propose that chlorophyll f is [2-formyl]-chlorophyll a (C55H70O6N4Mg). This finding suggests that oxygenic photosynthesis can be extended further into the infrared region and may open associated bioenergy applications.
1 School of Biological Sciences, University of Sydney, NSW 2006, Australia.
2 Department of Chemistry and Biomolecular Sciences, Macquarie University, NSW 2109, Australia.
3 School of Chemistry, University of Sydney, NSW 2006, Australia.
4 School of Biotechnology and Biomolecular Science, University of New South Wales, NSW 2052, Australia.
5 Department of Biology I, University of Munich, D-80638 Muenchen, Germany.
