Population of arbuscular mycorrhizal fungi in semi-arid environment of Jordan as influenced by biotic and abiotic factors

2003 ◽  
Vol 53 (3) ◽  
pp. 409-417 ◽  
Author(s):  
M.Jamil Mohammad ◽  
S.Rushdi Hamad ◽  
H.Issa Malkawi
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Abiotic Factors ◽  
Arbuscular Mycorrhizal ◽  
Arid Environment ◽  
Biotic And Abiotic Factors ◽  
Semi Arid

Arbuscular mycorrhizal fungi in roots and soil respond differently to biotic and abiotic factors in the Serengeti

Mycorrhiza ◽  
2020 ◽  
Vol 30 (1) ◽  
pp. 79-95 ◽  
Author(s):  
Bo Maxwell Stevens ◽  
Jeffrey Ryan Propster ◽  
Maarja Öpik ◽  
Gail W. T. Wilson ◽  
Sara Lynne Alloway ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Abiotic Factors ◽  
Arbuscular Mycorrhizal ◽  
Biotic And Abiotic Factors

scholarly journals Arbuscular mycorrhizal fungi in soil, roots and rhizosphere ofMedicago truncatula: diversity and heterogeneity under semi-arid conditions

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e6401 ◽  
Author(s):  
Neji Mahmoudi ◽  
Cristina Cruz ◽  
Mosbah Mahdhi ◽  
Mohamed Mars ◽  
Maria F. Caeiro
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Gene Diversity ◽  
Abiotic Factors ◽  
Aridity Index ◽  
Arbuscular Mycorrhizal ◽  
Arid Ecosystems ◽  
Spore Density ◽  
Amf Diversity ◽  
Semi Arid

Mycorrhizal symbioses are considered indicators of ecosystem biodiversity. However, their diversity and relevance in arid and semi-arid ecosystems are poorly understood. This study addressed this subject, the main objective being to evaluate arbuscular mycorrhizal fungi (AMF) diversity and heterogeneity in a semi-arid region. Samples of bulk and rhizosphere soil and fine roots ofMedicago truncatulawere collected at four different sites with the same aridity index (6.1), in Bou-Hedma National Park, Tunisia, a semi-arid ecosystem. AMF taxa were assessed by 454- pyrosequencing and identified by BLAST matching of operational taxonomic units (OTUs) against the MaarjAMdatabase, targeting AMF SSUrRNAgene diversity. Roots were the hotspots of AMF diversity (107 OTUs out of a total of 138). Of the 138 OTUs, 113 found correspondence in the MaarjAMdatabase, with 32 AMF virtual taxa (VTX),19 Site-exclusive (SE) and 13 common to at least two sites (Non-site exclusive, NSE); the remaining 25 OTUs grouped in 16 putative new AMF taxa (pNTX), each one consisting of OTUs sharing pairwise distances not higher than 3%. We found a high diversity and heterogeneity of AMF across the four sites, which showed, in a regression analysis, significant relation to six out of the eight environmental parameters evaluated: grazing activity and soil texture, electrical conductivity, organic matter, total phosphorus and total nitrogen. AMF colonization of plants also presented significant differences among the four sites, as well as spore density, microbial biomass and several enzymatic activities (dehydrogenase, β-glucosidase and phosphatase) evaluated in rhizosphere soils. The four sites clustered in two groups in a hierarchical clustering evaluation based on their AMF diversity (total numbers of OTU, VTX and pNTX) and the parameters referred above. The crucial role of abiotic factors, other than aridity index, on AMF community composition, was evidenced by the high heterogeneity found between AMF communities across sites under identical aridity conditions.

Shrubs influence arbuscular mycorrhizal fungi communities in a semi-arid environment

2011 ◽  
Vol 43 (3) ◽  
pp. 682-689 ◽  
Author(s):  
Laura B. Martínez-García ◽  
Cristina Armas ◽  
Juan de Dios Miranda ◽  
Francisco M. Padilla ◽  
Francisco I. Pugnaire
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Arid Environment ◽  
Semi Arid

Soil and seasons affect arbuscular mycorrhizal fungi associated with Tamarix rhizosphere in arid and semi-arid steppes

2016 ◽  
Vol 107 ◽  
pp. 182-190 ◽  
Author(s):  
Karima Bencherif ◽  
Ammar Boutekrabt ◽  
Yolande Dalpé ◽  
Anissa Lounès-Hadj Sahraoui
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Semi Arid
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