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1链格孢菌毒素对紫茎泽兰叶片光合作用的影响(英文)显示文摘本文研究了一个新分离纯化的链格孢菌毒素对恶性杂草紫茎泽兰叶片的致病作用与叶片光合作用抑制的相关性。 结果表明:在毒索处理叶片的形态产生明显变化之前,光合放氧速率和表观量子效率均明显降低。进一步的研究表明其作 用位点在类囊体膜上,主要抑制了2个光系统的电子传递活性,但对于色素含量、暗反应关键酶则没有显著的影响。戴新宾 陈世国 强胜 安传福 张荣铣 2004植物病理学报2004,34,1:13
2Is bicarbonate directly used as substrate to participate in photosynthetic oxygen evolution显示文摘If the photosynthetic organisms assimilated only CO_(2) in the Archean atmosphere,hydroxide ion in the Archean seawater would not increase.If plants would not consume bicarbonate as a direct substrate during photosynthesis,it is difficult to explain the evolution of Earth's environment.To date,it is generally accepted that photosynthetic O_(2) evolution of plants come from water photolysis.However,it should be debated by evaluating the effect of bicarbonate in photosynthetic O_(2) evolution,analyzing the role of carbonic anhydrase(CA) in photosynthetic O_(2) evolution,and the relationship between thylakoid CA and photosynthetic O_(2) evolution.In the paper,I propose that bicarbonate is directly used as substrate to participate in photosynthetic O_(2) evolution.The rationality of bicarbonate photolysis of plants is discussed from the thermodynamics and evolution of Earth's environment.The isotopic evidence that bicarbonate is not the direct substrate of photosynthetic O_(2) release is reexamined,and the new explanation of bicarbonate photolysis in photosynthetic O_(2) evolution is proposed.Yanyou Wu 2021Acta Geochimica2021,40,4:1
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