...The schematic diagram of this reaction pathway is called the Z scheme because it is shaped like a Z. In 1957, R. Emerson (1903-59) discovered that if light with wavelengths longer than the red absorption maximum of chlorophyll a (700 nm) is given to green plants and algae, the quantum yield of photosynthesis decreases (red drop), but if shorter wavelength light (650 nm for green plants and 575 nm for red algae) is also given at the same time, the photosynthetic rate becomes greater than the sum of the two when given alone (Emerson effect). This phenomenon is not observed in photosynthetic bacteria. ... *Some of the terminology explanations that mention "red drop" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…この反応経路の模式図はZのような形をしているのでZスキームと呼ばれる。1957年エマーソンR.Emerson(1903‐59)は,クロロフィルaの赤色域の吸収極大より長波長側の光(700nm)しか与えないと,緑色植物や藻類の光合成の量子収量が低下する(赤色低下red drop)が,ここへより短波長の光(緑色植物なら650nm,紅藻なら575nm)を同時に与えると,光合成速度は両者を単独で与えたときの和より大きくなることを見いだした(エマーソン効果)。光合成細菌ではこの現象はみられない。… ※「red drop」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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