干旱区生态环境知识资源中心(Arid): Biocrust cyanobacteria inoculants biomineralize gypsum and preserve indigenous bacterial communities in dryland topsoil

Arid

DOI	10.1016/j.geoderma.2021.115527
	Biocrust cyanobacteria inoculants biomineralize gypsum and preserve indigenous bacterial communities in dryland topsoil
	Jimenez-Gonzalez, Marco A.; de Lima, Nathali Machado; Chilton, Angela M.; Almendros, Gonzalo; Munoz-Rojas, Miriam
通讯作者	Munoz-Rojas, M (corresponding author), UNSW Sydney, Ctr Ecosyst Sci, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia.
来源期刊	GEODERMA
ISSN	0016-7061
EISSN	1872-6259
出版年	2022
卷号	406
英文摘要	Biocrust cyanobacteria are ubiquitous organisms in dryland environments that can enhance soil stability and improve nutrient conditions in reconstructed or disturbed soils. Despite the demonstrated benefits of cyanobacterial inoculation for promoting soil fertility, there is limited knowledge about the impacts of introducing cultured cyanobacteria on the indigenous microbial communities. Here, we conducted a microcosm experiment under controlled conditions using indigenous biocrust cyanobacteria and locally sourced topsoil substrate commonly used in dryland restoration in the Australian arid zone. We inoculated the topsoil with a consortium composed of Leptolyngbya sp. and Scytonema sp. cyanobacteria, to assess the effects of the inoculated cyanobacteria on (i) the soil chemical properties, i.e., pH, electrical conductivity (EC), total organic carbon (TOC), and nitrogen (TN) of the inoculated topsoil, (ii) the early formation of an artificial soil biocrust and iii) the composition and diversity of the resident bacterial community. Our results showed that the inoculated cyanobacterial consortia decreased the EC, but changes in the TOC and TN were not significant after 80 days. A higher content of chlorophyll a in the inoculated samples compared to the control, confirmed the survival of the cyanobacterial inoculants after 80 days. The inoculated cyanobacteria promoted gypsum formation on the soil surface indicating that they are actively modifying the upper layers of the soil profile and improving habitability. Although immediately after inoculation cyanobacteria dominated the abundance of bacterial phylotypes, these were replaced by other phyla such as Actinobacteria, after 80 days. The Shannon diversity and Simpson diversity indexes between control and inoculated soils differed at the time of inoculation but were similar at the end of the experiment. These results suggest that, in the short term, the introduced cyanobacteria do not significantly affect the native resident bacterial communities and are capable of colonizing the topsoil without affecting the natural community.
英文关键词	Land rehabilitation Leptolyngbya Microbial diversity Microbial inoculation Scytonema Soil biocrust
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000708893700019
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	University of Western Australia
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363401
作者单位	[Jimenez-Gonzalez, Marco A.; Almendros, Gonzalo] CSIC, Museo Nacl Ciencias Nat MNCN, Madrid 28006, Spain; [Jimenez-Gonzalez, Marco A.] Univ Autonoma Madrid, Madrid 28049, Spain; [de Lima, Nathali Machado; Chilton, Angela M.; Munoz-Rojas, Miriam] UNSW Sydney, Ctr Ecosyst Sci, Sch Biol Earth & Environm Sci, Sydney, NSW 2052, Australia; [Munoz-Rojas, Miriam] Univ Western Australia, Sch Biol Sci, Crawley, WA 6009, Australia
推荐引用方式 GB/T 7714	Jimenez-Gonzalez, Marco A.,de Lima, Nathali Machado,Chilton, Angela M.,et al. Biocrust cyanobacteria inoculants biomineralize gypsum and preserve indigenous bacterial communities in dryland topsoil[J]. University of Western Australia,2022,406.
APA	Jimenez-Gonzalez, Marco A.,de Lima, Nathali Machado,Chilton, Angela M.,Almendros, Gonzalo,&Munoz-Rojas, Miriam.(2022).Biocrust cyanobacteria inoculants biomineralize gypsum and preserve indigenous bacterial communities in dryland topsoil.GEODERMA,406.
MLA	Jimenez-Gonzalez, Marco A.,et al."Biocrust cyanobacteria inoculants biomineralize gypsum and preserve indigenous bacterial communities in dryland topsoil".GEODERMA 406(2022).