Japan Found Chlorophyll D May Affect Global Carbon Cycle
A Japanese research team reported in a new issue of the American Journal of Science that a substance that enables photosynthesis to proceed under near-infrared radiation, chlorophyll D, is widespread in the earth, oceans, and lakes. This chlorophyll may be the earth. One of the driving forces on the carbon cycle.
Previous studies have suggested that chlorophyll D exists only in a small number of marine algae and is distributed in a limited area of ​​the ocean, and its role in the carbon cycle of the Earth is negligible. However, a new study jointly conducted by the Japan Ocean Research and Development Agency and Kyoto University found that the previous conclusions were incorrect.
According to a press release issued by the two agencies, researchers collected water bottom deposits from 9 waters with large differences in water temperature and salt concentrations in the Arctic Ocean, Japan’s Sagami Bay, and the Antarctic waters, and found that all sediments contained Chlorophyll D and its products of photosynthesis.
According to the communique, Chlorophyll D is the only pigment that absorbs near-infrared light at a wavelength of 700 nm to 750 nm for photosynthesis. The above findings indicate that near-infrared light is used in photosynthesis and may affect the carbon cycle on Earth.
Researchers estimate that if the global carbon dioxide absorbed by chlorophyll D is converted to carbon, it may be about 1 billion tons per year, which is equivalent to about one-fourth of the annual increase in average carbon dioxide in the atmosphere.
Previous studies have suggested that chlorophyll D exists only in a small number of marine algae and is distributed in a limited area of ​​the ocean, and its role in the carbon cycle of the Earth is negligible. However, a new study jointly conducted by the Japan Ocean Research and Development Agency and Kyoto University found that the previous conclusions were incorrect.
According to a press release issued by the two agencies, researchers collected water bottom deposits from 9 waters with large differences in water temperature and salt concentrations in the Arctic Ocean, Japan’s Sagami Bay, and the Antarctic waters, and found that all sediments contained Chlorophyll D and its products of photosynthesis.
According to the communique, Chlorophyll D is the only pigment that absorbs near-infrared light at a wavelength of 700 nm to 750 nm for photosynthesis. The above findings indicate that near-infrared light is used in photosynthesis and may affect the carbon cycle on Earth.
Researchers estimate that if the global carbon dioxide absorbed by chlorophyll D is converted to carbon, it may be about 1 billion tons per year, which is equivalent to about one-fourth of the annual increase in average carbon dioxide in the atmosphere.
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