干旱区生态环境知识资源中心(Arid): Light intensity stimulates the production of extracellular polymeric substances (EPS) in a culture of the desert cyanobacterium Trichormus sp

Arid

DOI	10.1007/s10811-021-02516-x
	Light intensity stimulates the production of extracellular polymeric substances (EPS) in a culture of the desert cyanobacterium Trichormus sp
	Dahech, Pablo; Schloemann, Michael; Ortiz, Claudia
通讯作者	Dahech, P (corresponding author), Univ Santiago Chile, Fac Chem & Biol, Santiago, Chile.
来源期刊	JOURNAL OF APPLIED PHYCOLOGY
ISSN	0921-8971
EISSN	1573-5176
出版年	2021
卷号	33 期号:5 页码:2795-2804
英文摘要	Cyanobacteria are photoautotrophic organisms that inhabit diverse environments. Some species have been characterized for their production of extracellular polymeric substances (EPS) that have several biotechnological applications. EPS production is dependent on the growth conditions of the cyanobacteria, such as the content of nitrogen in the culture medium, the supplementation of the media with NaCl, or the light intensity. In this work, we studied the production profile of EPS at different growth stages in a culture from desert of the cyanobacterium Trichormus sp. The culture had been obtained from biological soil crusts (BSC) collected from a semi-arid zone of the IV region of Chile. We evaluated the effect of NaCl and nitrogen content in the culture media, in addition to the light intensity, on the growth and EPS production of the cyanobacterial cultures. The growth curve of Trichormus sp. showed a lag phase up to day 6, a short exponential phase up to day 10, and a stationary phase that lasted to the end of the experiment. The production of EPS was evaluated during the exponential growth phase of Trichormus sp. and showed a fourfold EPS production at 9.6 W m(-2), compared to the basal condition at 3.2 W m(-2). This light intensity is the highest light condition reported for the evaluation of EPS production in soil cyanobacteria. In this work, we show that the light intensity, but not the presence of NaCl or nitrogen in the medium, stimulates the production of EPS in the desert cyanobacterium Trichormus sp.
英文关键词	Desert cyanobacteria Trichormus sp Extracellular polymeric substances Light intensity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000673381200002
WOS关键词	BIOLOGICAL SOIL CRUSTS ; EXOPOLYSACCHARIDE PRODUCTION ; SUCCESSIONAL STAGES ; POLYSACCHARIDES ; ANABAENA ; BIOSYNTHESIS ; OPTIMIZATION ; GROWTH ; CULTIVATION ; ENRICHMENT
WOS类目	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS研究方向	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363731
作者单位	[Dahech, Pablo; Ortiz, Claudia] Univ Santiago Chile, Fac Chem & Biol, Santiago, Chile; [Schloemann, Michael] Tech Univ Bergakad Freiberg, Inst Biosci, Freiberg, Germany
推荐引用方式 GB/T 7714	Dahech, Pablo,Schloemann, Michael,Ortiz, Claudia. Light intensity stimulates the production of extracellular polymeric substances (EPS) in a culture of the desert cyanobacterium Trichormus sp[J],2021,33(5):2795-2804.
APA	Dahech, Pablo,Schloemann, Michael,&Ortiz, Claudia.(2021).Light intensity stimulates the production of extracellular polymeric substances (EPS) in a culture of the desert cyanobacterium Trichormus sp.JOURNAL OF APPLIED PHYCOLOGY,33(5),2795-2804.
MLA	Dahech, Pablo,et al."Light intensity stimulates the production of extracellular polymeric substances (EPS) in a culture of the desert cyanobacterium Trichormus sp".JOURNAL OF APPLIED PHYCOLOGY 33.5(2021):2795-2804.