干旱区生态环境知识资源中心(Arid): Effects of arbuscular mycorrhizal fungi on inoculated seedling growth and rhizosphere soil aggregates

Arid

DOI	10.1016/j.still.2019.104340
	Effects of arbuscular mycorrhizal fungi on inoculated seedling growth and rhizosphere soil aggregates
	Zhang, Zhongfeng 1; Mallik, Azim 1,2; Zhang, Jinchi 3; Huang, Yuqing 1; Zhou, Longwu 1
通讯作者	Zhang, Zhongfeng ; Mallik, Azim
来源期刊	SOIL & TILLAGE RESEARCH
ISSN	0167-1987
EISSN	1879-3444
出版年	2019
卷号	194
英文摘要	Arbuscular mycorrhizal fungi (AMF) inoculation have been shown to enhance host plant growth and rhizosphere soil aggregates largely due to the combined effect of extraradical hyphae and glomalin-related soil proteins but their effects on rocky desertified soils remain unknown. Extensive karst area of southwest China has undergone rocky desertification because of soil erosion and vegetation degradation. Karst soils in this area are mainly composed of silty clay loam developed from carbonate rock erosion under subtropical humid monsoon climate. We tested the hypothesis that AMF colonization of tree seedlings would improve water stable aggregates of degraded karst soil and enhance seedling growth. Seedlings of two tree species, Toona sinensis and Delavaya toxocarpa suitable for afforestation in karst area, were inoculated separately with three AMF, Funneliformis mosseae, Glomus versiforme and Rhizophagus intraradices in pots containing rocky desertified soil. Non-inoculated seedlings were used as control. After 12 months we found that the percentage of water stable aggregates (diameter > 0.25 mm; WSA (> 0.25)) in the rhizosphere soil of the inoculated seedlings was increased by 15.6-20.5% compared to control. AMF colonization significantly increased the quantity of aggregates with diameter > 2 mm compared to control but soil aggregates of size class 0.25 - 0.5 mm decreased significantly in inoculated seedlings, regardless of tree species. Shoot biomass of inoculated T. sinensis and D. toxocarpa seedling was increased by 15.7-21.2% and 8.5-20.4%, respectively compared to non-inoculated seedlings. In contrast, AMF inoculation minimally influenced the root biomass of the two tree species. The easily extractable glomalin (EEG) content and mean weight diameter (MWD) of rhizospheric soil of the inoculated seedlings increased by 28.9-75.1% and 31.7-48.1%, respectively compared to control. The AMF colonization was highly correlated with WSA (> 0.25), EEG and MWD. Overall results support our hypothesis that AMF colonization enhance the quantity of rhizospheric soil aggregates and improve the growth of host seedlings. We conclude that planting tree species inoculated with AMF has a potential for restoration of degraded karst ecosystem. In future research other locally adapted tree and shrub species should be tested following AMF inoculation to prepare a wider planting stocks to be used in restoration of degraded karsts.
英文关键词	Karst Ecological restoration Soil texture Hyphal length
类型	Article
语种	英语
国家	Peoples R China ; Canada
收录类别	SCI-E
WOS记录号	WOS:000486360400046
WOS关键词	VEGETATION RESTORATION ; ORGANIC-CARBON ; PLANT-ROOT ; LAND-USE ; GLOMALIN ; STABILITY ; PROTEIN ; HYPHAE ; QUANTIFICATION ; COMMUNITIES
WOS类目	Soil Science
WOS研究方向	Agriculture
EI主题词	2019-11-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310683
作者单位	1.Guangxi Zhuang Autonomous Reg & Chinese Acad Sci, Guangxi Inst Bot, Guangxi Key Lab Plant Conservat & Restorat Ecol K, Guilin 541006, Guangxi, Peoples R China; 2.Lakehead Univ, Dept Biol, Thunder Bay, ON P7B 5E1, Canada; 3.Nanjing Forestry Univ, Jiangsu Prov Key Lab Soil & Water Conservat & Eco, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhongfeng,Mallik, Azim,Zhang, Jinchi,et al. Effects of arbuscular mycorrhizal fungi on inoculated seedling growth and rhizosphere soil aggregates[J],2019,194.
APA	Zhang, Zhongfeng,Mallik, Azim,Zhang, Jinchi,Huang, Yuqing,&Zhou, Longwu.(2019).Effects of arbuscular mycorrhizal fungi on inoculated seedling growth and rhizosphere soil aggregates.SOIL & TILLAGE RESEARCH,194.
MLA	Zhang, Zhongfeng,et al."Effects of arbuscular mycorrhizal fungi on inoculated seedling growth and rhizosphere soil aggregates".SOIL & TILLAGE RESEARCH 194(2019).