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Arbuscular mycorrhizal mycelial networks and glomalin-related soil protein increase soil aggregation in Calcaric Regosol under well-watered and drought stress conditions
Ji, Lingling1; Tan, Wenfeng1,2; Chen, Xiuhua1
2019
Source PublicationSOIL & TILLAGE RESEARCH
ISSN0167-1987
Volume185Pages:1-8
Corresponding AuthorChen, Xiuhua(chenxh@mail.hzau.edu.cn)
AbstractArbuscular mycorrhizal (AM) fungi have a direct influence on soil aggregation in most fertile ecosystems. This study investigated the effects of AM fungi on soil aggregate stability of Calcaric Regosol under well-watered and drought stress conditions. A two-compartment system was employed to exclude the effects of plant roots, and ultrasonic dispersion technique was applied to evaluate the aggregate bond energy. The results showed that good symbiotic relationships were formed between AM fungi and sandstorm-tolerant species Astragalus adsurgens Pall even under drought stress conditions. Inoculation with AM fungi significantly improved plant growth, especially the root development. Hyphal length, spore density, glomalin-related soil protein content were significantly increased by AM fungal inoculation under both well-watered and drought stress conditions. Likewise, the proportion and dispersive energy of soil water-stable macroaggregates were also markedly increased by the inoculation. The hyphae of AM fungi directly contributed to the dispersive energy of soil water-stable macro-aggregates and significantly improved soil aggregate stability under both experimental conditions. This study demonstrates that AM fungi play a dominant role in the stability of soil water-stable aggregates by improving the aggregate bond energy, particularly for macroaggregates.
KeywordArbuscular mycorrhizal fungi Soil water-stable aggregate Ultrasonic dispersion
DOI10.1016/j.still.2018.08.010
WOS KeywordASTRAGALUS-SINICUS L. ; FUNGI MEDIATED UPTAKE ; GLOMUS-INTRARADICES ; STABILITY ; PLANTS ; HYPHAE ; TOLERANCE ; LANTHANUM ; SYMBIOSIS ; ROOTS
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41330852] ; National Natural Science Foundation of China[41271474]
Funding OrganizationNational Natural Science Foundation of China
WOS Research AreaAgriculture
WOS SubjectSoil Science
WOS IDWOS:000449127700001
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/52575
Collection中国科学院地理科学与资源研究所
Corresponding AuthorChen, Xiuhua
Affiliation1.Huazhong Agr Univ, Coll Resources & Environm, Minist Agr, Key Lab Arable Land Conservat Middle & Lower Reac, Wuhan 430070, Hubei, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Ji, Lingling,Tan, Wenfeng,Chen, Xiuhua. Arbuscular mycorrhizal mycelial networks and glomalin-related soil protein increase soil aggregation in Calcaric Regosol under well-watered and drought stress conditions[J]. SOIL & TILLAGE RESEARCH,2019,185:1-8.
APA Ji, Lingling,Tan, Wenfeng,&Chen, Xiuhua.(2019).Arbuscular mycorrhizal mycelial networks and glomalin-related soil protein increase soil aggregation in Calcaric Regosol under well-watered and drought stress conditions.SOIL & TILLAGE RESEARCH,185,1-8.
MLA Ji, Lingling,et al."Arbuscular mycorrhizal mycelial networks and glomalin-related soil protein increase soil aggregation in Calcaric Regosol under well-watered and drought stress conditions".SOIL & TILLAGE RESEARCH 185(2019):1-8.
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