干旱区生态环境知识资源中心(Arid): Isolation of Efficient Cellulose Decomposer in Sandy Cropland and Its Application in Straw Turnover in Agro-Pasture Ecotone of Northern China

Arid

DOI	10.3389/fenvs.2020.528732
	Isolation of Efficient Cellulose Decomposer in Sandy Cropland and Its Application in Straw Turnover in Agro-Pasture Ecotone of Northern China
	Wang, Shaokun; Zhao, Xueyong; Suvdantsetseg, Balt; Lian, Jie
通讯作者	Wang, SK ; Zhao, XY
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2020
卷号	8
英文摘要	Slow organic material and nutrient turnover is one of the limiting processes in arid and semiarid ecosystems, and cellulose decomposers play an important role in straw turnover and nutrient return in cropland ecosystem in drylands. In order to moderate the limiting effect of material turnover, a highly efficient cellulose decomposing fungus was screened from 85 cellulose decomposing fungi and we named the isolated fungus as NMCel-crop1 in the sandy cropland of Horqin Sandy Land in a semiarid agro-pasture ecotone in northern China. This fungal decomposer was identified asRhizomucor variabilisby using morphological and rDNA-ITS molecular methods. The optimized temperature for expressing its carboxymethyl cellulose (CMC) enzyme activity ranges from 40 to 55 degrees C. The CMC enzyme activity was significantly and highly produced by the NMCel-crop1 than thatin situsoil in the cropland, and the filter paper decomposition rate was 82% in 7 days. The field straw decomposition experiment showed that the decomposition rate of maize straw infected by NMCel-crop1 reached at 92.5% in 1 year, which was 26% higher than that without infection. Straw turnover accelerated by NMCel-crop1 significantly increased soil organic carbon (SOC) and total nitrogen (TN) by 34.08 and 14.26%, respectively, indicating that the selected highly efficient decomposing fungus could accelerate straw turnover rate and increase SOC and nitrogen content and promote soil fertility and soil health in the sandy cropland, as well as potentially improve crop productivity and quality in the sustainable agriculture management of the arid and semiarid sandy cropland.
英文关键词	cellulose decomposer CMC enzyme activity sandy cropland straw turnover agro-pasture ecotone
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000575282100001
WOS关键词	RHIZOMUCOR-VARIABILIS ; SOIL CARBON ; AIR-POLLUTION ; NITROGEN ; LAND ; SYSTEMS ; FUNGI
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326638
作者单位	[Wang, Shaokun; Zhao, Xueyong; Lian, Jie] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Naiman Desertificat Res Stn, Lanzhou, Peoples R China; [Suvdantsetseg, Balt] Sustainable Dev Inst Western Reg Mongolia, Ulaanbaatar, Mongolia
推荐引用方式 GB/T 7714	Wang, Shaokun,Zhao, Xueyong,Suvdantsetseg, Balt,et al. Isolation of Efficient Cellulose Decomposer in Sandy Cropland and Its Application in Straw Turnover in Agro-Pasture Ecotone of Northern China[J],2020,8.
APA	Wang, Shaokun,Zhao, Xueyong,Suvdantsetseg, Balt,&Lian, Jie.(2020).Isolation of Efficient Cellulose Decomposer in Sandy Cropland and Its Application in Straw Turnover in Agro-Pasture Ecotone of Northern China.FRONTIERS IN ENVIRONMENTAL SCIENCE,8.
MLA	Wang, Shaokun,et al."Isolation of Efficient Cellulose Decomposer in Sandy Cropland and Its Application in Straw Turnover in Agro-Pasture Ecotone of Northern China".FRONTIERS IN ENVIRONMENTAL SCIENCE 8(2020).