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Authors Chebaane, A; Symanczik, S; Oehl, F; Azri, R; Gargouri, M; Mader, P; Mliki, A; Fki, L
Author Full Name Chebaane, Asma; Symanczik, Sarah; Oehl, Fritz; Azri, Rahma; Gargouri, Mahmoud; Mader, Paul; Mliki, Ahmed; Fki, Lotfi
Title Arbuscular mycorrhizal fungi associated withPhoenix dactyliferaL. grown in Tunisian Sahara oases of different salinity levels
Source SYMBIOSIS
Language English
Document Type Article
Author Keywords Arbuscular mycorrhizal fungi; Date palm; Glomalin; Salinity; Oases ecosystem
Keywords Plus DATE PALM; SOIL-SALINITY; ASTERISCUS-MARITIMUS; DROUGHT TOLERANCE; SALT STRESS; GLOMALIN; L.; RHIZOSPHERE; COMMUNITIES; PROTEIN
Abstract Soil salinity continuously threatens the sustainability of several economically strategic crop production systems in Tunisia, especially in the arid and Saharan areas. In addition, it also affects microbial populations associated with the roots of crop plants, which are known to contribute efficiently to crop's productivity and adaptation to environmental stresses. In this respect, the effect of soil salinity on arbuscular mycorrhizal fungi (AMF) associated with date palm (Phoenix dactyliferaL.), the flagship crop of Tunisian oases, is still rarely studied. The present work is the first investigation of the colonization of date palm roots by AMF and the production of easily-extractable glomalin related soil protein (EE-GRSP) in different date palm plantations where soils present high salinity rates up to 7.6 dS m(-1). The results revealed a negative correlation between soil salinity and the intensity of mycorrhization on one hand but a positive correlation between soil salinity and EE-GRSP and spore density on the other hand. This suggests that the production of EE-GRSP might be involved in the tolerance of AMF to elevated salinity in the soil. In addition, four AMF species, identified based on spore morphology and molecular phylogenetic analyses, have been recovered in single spore derived cultures, namelyAlbahypha drummondii,Dominikia disticha,Funneliformis coronatusandRhizoglomus irregulare. The investigation of the current mycorrhizal status of date palm roots and rhizosphere soil EE-GRSP concentrations along a salinity gradient on one side and isolation and identification of AMF strains native to Tunisian oases ecosystems one the other represent first steps towards the development of sustainable agricultural practices in this region where salinity is the main production-limiting factor.
Author Address [Chebaane, Asma; Fki, Lotfi] Fac Sci Sfax, Dept Sci Vie, Lab Biotechnol Vegetales Appl Ameliorat Cultures, Route Soukra Km 4, Sfax 3038, Tunisia; [Chebaane, Asma; Azri, Rahma; Gargouri, Mahmoud; Mliki, Ahmed] Ctr Biotechnol Borj Cedria, Lab Physiol Mol Plantes, BP 901, Hammam Life 2050, Tunisia; [Symanczik, Sarah; Mader, Paul] Res Inst Organ Agr FiBL, Ackerstr 113, CH-5070 Frick, Switzerland; [Oehl, Fritz] Competence Div Plants & Plant Prod, Agroscope, Ecotoxicol, Muller Thurgau Str 29, CH-8820 Wadenswil, Switzerland
Reprint Address Symanczik, S (corresponding author), Res Inst Organ Agr FiBL, Ackerstr 113, CH-5070 Frick, Switzerland.
E-mail Address sarah.symanczik@fibl.org
Funding Agency and Grant Number r4d project
Funding Text This work was partly supported by the r4d project
Publisher SPRINGER
Publisher City DORDRECHT
Publisher Address VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN 0334-5114
29-Character Source Abbreviation SYMBIOSIS
ISO Source Abbreviation Symbiosis
Publication Date JUN
Year Published 2020
Volume 81
Issue 2
Beginning Page 173
Ending Page 186
Digital Object Identifier (DOI) 10.1007/s13199-020-00692-x
Page Count 14
Web of Science Category Microbiology
Subject Category Microbiology
Document Delivery Number MM6FY
Unique Article Identifier WOS:000545541900001
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