文献类型：期刊文献

英文题名：Effect of Environmental Factors on Nitrite Nitrogen Absorption in Microalgae-Bacteria Consortia of Oocystis borgei and Rhodopseudomonas palustris

作者：Ma, Yukun[1];Luo, Zhishen[1];Zhong, Jiazhan[1];Zhang, Hanyi[1];Huang, Xianghu[1];Li, Changling[1];Zhang, Yulei[1,2]

机构：[1]Guangdong Ocean Univ, Coll Fisheries, Dept Aquaculture, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Guangdong South China Sea Key Lab Aquaculture Aqua, Zhanjiang 524088, Peoples R China

年份：2023

卷号：15

期号：9

外文期刊名：WATER

收录：SCI-EXPANDED(收录号：WOS:000987820900001)、、WOS

基金：This research was funded by the Modern Seed Industry Park for Whiteleg Shrimp of Guangdong Province (K22226); the Program for Scientific Research Start-up Funds of Guangdong Ocean University (060302022102); the Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, Guangdong Ocean University (KFKT2019YB09); the Undergraduate Innovation Team of Guangdong Ocean University (CXTD2023002).

语种：英文

外文关键词：algae-bacterial consortium; Oocystis borgei; Rhodopseudomonas palustris; nitrite absorption; environmental factor

外文摘要：The effects of temperature, salinity, and illumination on the nitrite uptake rate of the microalgae-bacteria consortia of Oocystis borgei and Rhodopseudomonas palustris were investigated. The absorption rates of nitrite and the contribution rate of each component in the consortia under different temperatures (15, 20, 25, 30, 35 degrees C), illuminations (0, 15, 25, 35, 45 mu mol center dot m(-2)center dot s(-1)), and salinities (0, 5, 15, 25, 35%) were determined by stable isotope labeling technique. The single and combined effects of three environmental factors on nitrite uptake by the microalgae-bacteria consortia were analyzed using single-factor and orthogonal experiments. The single-factor experiment showed that the microalgae-bacteria consortia could absorb nitrite efficiently when the temperature, salinity, and illumination were 20 similar to 30 degrees C, 0 similar to 15%, and 25 similar to 45 mu mol center dot m(-2)center dot s(-1), respectively, with the highest absorption rates were 2.086, 3.058, and 2.319 mu g center dot g(-1)center dot h(-1), respectively. The orthogonal experiment showed that the most efficient environmental conditions for nitrite uptake were 30 degrees C, 5% salinity, 35 mu mol center dot m(-2)center dot s(-1) illumination, and the rate of nitrite uptake by the microalgae-bacteria consortia was 3.204 mu g center dot g(-1)center dot h(-1). The results showed that the nitrite uptake rate of the O. borgei-R. palustris consortia was most affected by temperature, followed by salinity, and least by illumination. Under the same conditions, the nitrite absorption capacity of the microalgae-bacteria consortia was greater than that of single bacteria or algae, and R. palustris played a major role in the nitrite absorption of the consortia. The O. borgei and R. palustris consortia still maintain high nitrite absorption efficiency when the environment changes greatly, which has broad application prospects in the regulation and improvement of water quality in shrimp culture.