干旱区生态环境知识资源中心(Arid): Potential role of common mycorrhizal networks in improving plant growth and soil physicochemical properties under varying nitrogen levels in a grassland ecosystem

Arid

DOI	10.1016/j.gecco.2020.e01352
	Potential role of common mycorrhizal networks in improving plant growth and soil physicochemical properties under varying nitrogen levels in a grassland ecosystem
	Muneer, Muhammad Atif; Wang, Ping; Zaib-un-Nisa; Lin, Changcun; Ji, Baoming
通讯作者	Lin, CC ; Ji, BM (corresponding author), Beijing Forestry Univ, Sch Grassland Sci, Beijing 100083, Peoples R China.
来源期刊	GLOBAL ECOLOGY AND CONSERVATION
EISSN	2351-9894
出版年	2020
卷号	24
英文摘要	Majority of plants are linked below-ground through common mycorrhizal networks (CMNs). The formation of CMNs between the roots of conspecific and heterospecific plant individuals influences the distribution of limiting nutrients, e.g., nitrogen (N) among the interconnected plants. In various ecosystems, the availability of N is being increased substantially; however, the effect of elevated N on the existence and functionality of CMNs in semi-arid regions of Inner Mongolia remains largely unexplored. Therefore, to verify the development of CMNs and their functionality under increasing N concentration, we incorporated different levels of N fertilizer, i.e., N0 = 0, N1 =7.06, N2 = 14.12, and N3 = 21.18 mg kg(-1), and established Leymus chinensis (L. chinensis) as a donor and the recipient plant in a specially designed portioned root-box. For the establishment of CMNs among the plants, compartments were separated via 37 mm mesh. The N-15 isotope tracer technique and microscopic analysis evidenced the presence of CMNs because the extraradical hyphae originated from the donor side and crossed 37 mm mesh of the recipient plant compartment. The N-15 recovery was highest at N1 in the donor (18.38%) and recipient (7.89%) plants, while the average transfer rate of N-15 to recipient plant was 21-65% with a maximum transfer rate at N2 treatment. The establishment of CMNs significantly improved the donor and recipient plants chlorophyll contents and plant biomass at low N levels. Moreover, the AM fungal extraradical hyphae also released a special kind of protein called glomalin-related soil proteins (GRSPs) that improved the soil structure in terms of mean weight diameter (MWD), thereby improving the soil organic carbon (SOC). Interestingly, the mycorrhizal network had a more profound impact on its neighboring plants than the host plant. In short, the present investigation emphasizes the presence of CMNs in the typical steppe of Inner Mongolia with vital roles in nutrient transfer and improvement of plant growth and soil properties. (C) 2020 The Authors. Published by Elsevier B.V.
英文关键词	Common mycorrhizal network N-15 transfer Plant biomass Soil properties Leymus chinensis Inner Mongolia
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:000608479000011
WOS关键词	PINUS-DENSIFLORA SEEDLINGS ; ARBUSCULAR MYCORRHIZAS ; ORGANIC-CARBON ; PHOSPHORUS ; FUNGI ; ECTOMYCORRHIZAL ; AGGREGATION ; DEPOSITION ; FERTILIZATION ; COLONIZATION
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348887
作者单位	[Muneer, Muhammad Atif; Wang, Ping; Lin, Changcun; Ji, Baoming] Beijing Forestry Univ, Sch Grassland Sci, Beijing 100083, Peoples R China; [Muneer, Muhammad Atif] Fujian Agr & Forestry Univ, Int Magnesium Inst, Coll Resource & Environm, Fuzhou, Peoples R China; [Zaib-un-Nisa] Beijing Forestry Univ, Coll Biol Sci & Technol, Beijing 100083, Peoples R China; [Zaib-un-Nisa] Sorghum Res Sub Stn, Dera Ghazi Khan, Punjab, Pakistan
推荐引用方式 GB/T 7714	Muneer, Muhammad Atif,Wang, Ping,Zaib-un-Nisa,et al. Potential role of common mycorrhizal networks in improving plant growth and soil physicochemical properties under varying nitrogen levels in a grassland ecosystem[J]. 北京林业大学,2020,24.
APA	Muneer, Muhammad Atif,Wang, Ping,Zaib-un-Nisa,Lin, Changcun,&Ji, Baoming.(2020).Potential role of common mycorrhizal networks in improving plant growth and soil physicochemical properties under varying nitrogen levels in a grassland ecosystem.GLOBAL ECOLOGY AND CONSERVATION,24.
MLA	Muneer, Muhammad Atif,et al."Potential role of common mycorrhizal networks in improving plant growth and soil physicochemical properties under varying nitrogen levels in a grassland ecosystem".GLOBAL ECOLOGY AND CONSERVATION 24(2020).