nitrate reduction

In para-cancerous tissue mainly were Gram-negative non-sporing anaerobes ( Bacteroides, Fusobacterium, Porphyromonas, Veillonella), accounted for 57.14% ( 24/ 42) of the examined bacteria, among them nitrate reduction test positive strains were 16.67% ( 7/ 42).

癌旁组织检出的主要为革兰氏阴性无芽孢厌氧菌（类杆菌、梭杆菌、紫单胞菌、韦荣球菌），占检出细菌的57.14%（24/42），硝酸盐还原实验阳性菌株为16.67%（7/42）。

As the electron carrier protein of photosystem, Fd involved directly in the electron transport of metabolism of CO2 fixation, nitrate reduction, sulfate reduction, glutamate synthesis and photophosphorylation.

在光反应过程中，Fd作为光反应终端的电子传递体，介导PSI与CO2固定、硝酸盐、硫酸盐和谷氨酸盐等代谢途径间的电子传递以及光合循环磷酸化中的电子回流。