干旱区生态环境知识资源中心(Arid): The formation of biocrust and improvement of soil properties by the exopolysaccharide-producing cyanobacterium: a biogeotechnological study

Arid

DOI	10.1007/s13399-022-02336-0
	The formation of biocrust and improvement of soil properties by the exopolysaccharide-producing cyanobacterium: a biogeotechnological study
	Karimi, Amir; Tahmourespour, Arezoo; Hoodaji, Mehran
通讯作者	Tahmourespour, A (corresponding author)，Islamic Azad Univ, Dept Basic Med Sci, Isfahan Khorasgan Branch, Esfahan, Iran.
来源期刊	BIOMASS CONVERSION AND BIOREFINERY
ISSN	2190-6815
EISSN	2190-6823
出版年	2022-01
英文摘要	Biocrusts are specialized and complex microbial products playing important roles in the soil biogeochemistry and dune stabilization of dryland ecosystem all over the world. The objectives were to (1) isolate and identify the most predominant EPS-producing cyanobacterium from a dry land of Iran (Segzi plain) and (2) study cyanobacterial inoculation affecting the formation of biocrust and improvement of soil chemico- and biological properties. The most predominant EPS-producing isolated cyanobacterium was identified as Microcoleus vaginatus ATHK43 (MW433686 NCBI accession number) and utilized as soil inoculants. Surface and sub-surface soil chemical (pH, EC, CEC, cations content) and biological properties (chlorophyll a, organic carbon, total N, EPS contents, and invertase and dehydrogenase activities) were investigated during the formation and development of biocrust. The biocrust significantly (P < 0.01) increased EC, total N, K, Ca, Mg, CEC, EPS amount, chlorophyll a, and organic carbon (C) contents of the surface soil. A high and significant correlation was found between chlorophyll content with organic C (R-2 = 0.98), N (R-2 = 0.98), and EPS amount (R-2 = 0.96) of biocrust in the surface soil. The activities of dehydrogenase and invertase enzymes were also significantly increased (P < 0.01) after 90 days of inoculation. In conclusion, such alterations in the soil chemico- and biological properties play an important role in nutrient cycling and improvement of soil structure, fertility, and stability. So, the formation of biocrust by bacterial inoculation can be used as a cost-effective and sustainable biogeotechnological method for re-establishment and enhancement of soil properties in dry and semi-dry lands.
英文关键词	Enzyme activity Microcoleus vaginatus Nutrient cycling Soil quality
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000750404600002
WOS关键词	ENZYME-ACTIVITIES ; BACTERIAL DIVERSITY ; DUNE STABILIZATION ; TENGGER DESERT ; CRUSTS ; INOCULATION ; EXTRACTION ; CARBON
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS研究方向	Energy & Fuels ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377057
作者单位	[Karimi, Amir; Hoodaji, Mehran] Islamic Azad Univ, Dept Soil Sci, Isfahan Khorasgan Branch, Esfahan, Iran; [Tahmourespour, Arezoo] Islamic Azad Univ, Dept Basic Med Sci, Isfahan Khorasgan Branch, Esfahan, Iran
推荐引用方式 GB/T 7714	Karimi, Amir,Tahmourespour, Arezoo,Hoodaji, Mehran. The formation of biocrust and improvement of soil properties by the exopolysaccharide-producing cyanobacterium: a biogeotechnological study[J],2022.
APA	Karimi, Amir,Tahmourespour, Arezoo,&Hoodaji, Mehran.(2022).The formation of biocrust and improvement of soil properties by the exopolysaccharide-producing cyanobacterium: a biogeotechnological study.BIOMASS CONVERSION AND BIOREFINERY.
MLA	Karimi, Amir,et al."The formation of biocrust and improvement of soil properties by the exopolysaccharide-producing cyanobacterium: a biogeotechnological study".BIOMASS CONVERSION AND BIOREFINERY (2022).