home    about    browse    search    latest    help 
Login | Create Account

Arbuscular mycorrhizal fungi associated with Phoenix dactylifera L. grown in Tunisian Sahara oases of different salinity levels

Chebaane, Asma; Symanczik, Sarah; Oehl, Fritz; Azri, Rahma; Gargouri, Mahmoud; Mäder, Paul; Mliki, Ahmed and Fki, Lotfi (2020) Arbuscular mycorrhizal fungi associated with Phoenix dactylifera L. grown in Tunisian Sahara oases of different salinity levels. Symbiosis, 81, pp. 173-186.

[thumbnail of Chebaane-etal-2020-Symbiosis-Vol81-p173-186.pdf] PDF - Published Version - English
Limited to [Depositor and staff only]

938kB

Document available online at: https://link.springer.com/article/10.1007/s13199-020-00692-x


Summary

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 arbuscularmycorrhizal fungi (AMF) associatedwith date palm (Phoenix dactylifera L.), 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, namely Albahypha drummondii, Dominikia disticha, Funneliformis coronatus and Rhizoglomus 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.


EPrint Type:Journal paper
Keywords:Arbuscular mycorrhizal fungi, Date palm, Glomalin, Salinity, Oases ecosystem, Abacus, FiBL10010, nutrient management, soil fertility
Agrovoc keywords:
Language
Value
URI
English
nutrient management
http://aims.fao.org/aos/agrovoc/c_330697
English
soil fertility
http://aims.fao.org/aos/agrovoc/c_7170
Subjects: Soil > Soil quality
Crop husbandry > Crop health, quality, protection
Research affiliation: Switzerland > Agroscope > ACW - Research Centre Wädenswil
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil > Nutrient management
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil > Soil fertility
Tunisia > Other organizations
DOI:doi.org/10.1007/s13199-020-00692-x
Related Links:https://www.fertiledatepalm.net/fdp-home-news.html
Deposited By: Symanczik, Dr. Sarah
ID Code:38924
Deposited On:21 Jan 2021 08:59
Last Modified:21 Jan 2021 08:59
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

Repository Staff Only: item control page

Downloads

Downloads per month over past year

View more statistics