沼泽红假单胞菌在蓝藻基质中的生长潜势和碳氮磷利用

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Abstract In order to efficiently use wasted cyanobacteria and simultaneously yield vigorous phototrophic bacteria, the growth potential and transformation of carbon, nitrogen and phosphorus of Rhodopseudomonas palustris in cyanobacterial substrates were determined. A cyanobacterial concentration greater than 0.87g/L can stimulate the proliferation of R. palustris PUF1under the condition of 30℃, 2000lx. Though less of OD₆₅₀ in cyanobacterial substrates (3g/L) than that of the ATYP medium at 108h, the concentration of bacteriochlorophyll a (Bchl a) was in similarity showing the more active synthesis of photopigments in cyanobacterial substrates. The addition of smaller molecular organic acids significantly regrew up the PUF1cells in late log phase. Specifically, at 252h and 444h, OD₆₅₀ in cyanobacterial substrates was enhanced by 191.75% and 269.24%, while Bchl a was 206.68% and 276.17%, respectively. At 444h, OD₆₅₀ and Bchl a in cyanobacterial substrates were separately 130.88% and 160.62% of the ATYP medium, indicating the superiority of natural cyanobacterial substrate to the ATYP medium for grown PUF1s, especially under a long incubation period. Evaluating the dried biomaterials and dissolved nutrients in cyanobacterial substrates, it indicated the unbalanced distribution of bioavailable carbon, nitrogen and phosphorus, namely surplus nitrogen, lacked carbon and limited phosphorus. It matters of improved bioavailable carbon in cyanobacterial biomasses for the enhanced growth of PUF1and nutrient sequestration.

Key words： Rhodopseudomonas palustris cyanobacteria growth carbon nitrogen phosphorus

Received: 07 March 2020

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	Articles by authors
	TIAN Ying-ying
	ZHAO Jing
	TIAN Cui-cui
	XIAO Bang-ding
	WU Xing-qiang

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TIAN Ying-ying,ZHAO Jing,TIAN Cui-cui等. Growth potential and CNP sequestration of Rhodopseudomonas palustris in cyanobacterial substrate[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(10): 4589-4596.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I10/4589

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