Loading content, please wait..
loading..
Logo
Version 3.22
or
Authors Kavroulakis, N; Tsiknia, M; Ipsilantis, I; Kavadia, A; Stedel, C; Psarras, G; Tzerakis, C; Doupis, G; Karpouzas, DG; Papadopoulou, KK; Ehaliotis, C
Author Full Name Kavroulakis, N.; Tsiknia, M.; Ipsilantis, I.; Kavadia, A.; Stedel, C.; Psarras, G.; Tzerakis, C.; Doupis, G.; Karpouzas, D. G.; Papadopoulou, K. K.; Ehaliotis, C.
Title Arbuscular mycorrhizal fungus inocula from coastal sand dunes arrest olive cutting growth under salinity stress
Source MYCORRHIZA
Language English
Document Type Article
Author Keywords Arbuscular mycorrhizal fungi; Sand dune; Olive tree cuttings; Salt stress; Osmotic stress; Root microbial community
Keywords Plus OLEA-EUROPAEA L.; MICROPROPAGATED SEA OATS; WATER-USE EFFICIENCY; GLOMUS-INTRARADICES; SEQUENCE ALIGNMENT; FIELD RESPONSE; DROUGHT STRESS; MAIZE PLANTS; HOST-PLANT; SYMBIOSIS
Abstract Cultivation of olive trees covers large coastal areas of land in Mediterranean regions, many of them characterized by low soil fertility and exposed to salinity and seasonal drought. In this frame, we developed mixed community inocula of arbuscular mycorrhizal fungi (AMF) derived from the extreme, seasonally arid environments of six Mediterranean sand dunes and evaluated their effects, in the form of community inocula, on rooted semi-woody olive tree cuttings (Olea europaeacv. Koroneiki). The plantlets were grown in the greenhouse for 10 months under 50 mM and 100 mM concentrations of NaCl, successively applied to induce osmotic stress. Inoculation had a positive effect on plant growth and nutrient uptake. However, the three best-performing inocula in early colonization and in plant growth enhancement also resulted in high plant sensitivity to high salinity, which was not observed for the other three inocula. This was expressed by decreased nutrient uptake and drastically lower plant growth, plant photosynthesis, and stomatal conductance (generally an over 50% reduction compared to no salinity application). Amplicon sequencing analysis of the olive plants under salinity stress showed that the AMF communities in the roots were clearly differentiated by inoculation treatment. We could not, however, consistently associate the plant responses observed under high salinity with specific shared AMF community membership or assembly attributes. The observed physiological overreaction to osmotic stress may be an adaptation trait, potentially brought about by host selection coupled to abiotic environmental filtering, in the harsh conditions from which the AMF inocula were derived. The overreaction may, however, be undesirable if conveyed to allochthonous plants at an agronomic level.
Author Address [Kavroulakis, N.; Psarras, G.; Tzerakis, C.; Doupis, G.] Hellen Agr Org Demeter, Inst Olive Tree Subtrop Plants & Viticulture, Khania, Crete, Greece; [Tsiknia, M.; Kavadia, A.; Stedel, C.; Ehaliotis, C.] Agr Univ Athens, Soils & Soil Chem Lab, Dept Nat Resources & Agr Engn, Athens, Greece; [Ipsilantis, I.] Aristotle Univ Thessaloniki, Fac Agr, Soil Sci Lab, Thessaloniki, Greece; [Stedel, C.; Karpouzas, D. G.; Papadopoulou, K. K.] Univ Thessaly, Lab Plant & Environm Biotechnol, Dept Biochem & Biotechnol, Larisa 41500, Greece
Reprint Address Ehaliotis, C (corresponding author), Agr Univ Athens, Soils & Soil Chem Lab, Dept Nat Resources & Agr Engn, Athens, Greece.
E-mail Address ehaliotis@aua.gr
ORCID Number Kavroulakis, Nektarios/0000-0001-7770-3060
Funding Agency and Grant Number EU (European Social Fund-ESF); Greek national funds through the Operational Program
Funding Text This research has been co-financed by the EU (European Social Fund-ESF) and Greek national funds through the Operational Program
Publisher SPRINGER
Publisher City NEW YORK
Publisher Address ONE NEW YORK PLAZA, SUITE 4600, NEW YORK, NY, UNITED STATES
ISSN 0940-6360
29-Character Source Abbreviation MYCORRHIZA
ISO Source Abbreviation Mycorrhiza
Publication Date JUL
Year Published 2020
Volume 30
Issue 4
Beginning Page 475
Ending Page 489
Digital Object Identifier (DOI) 10.1007/s00572-020-00963-x
Page Count 15
Web of Science Category Mycology
Subject Category Mycology
Document Delivery Number MB5KW
Unique Article Identifier WOS:000539632500001
Plants associated with this reference

LEGAL NOTICES — This website is protected by Copyright © The University of Sussex, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021. The eHALOPH database is protected by Database Right and Copyright © The University of Sussex and other contributors, 2006, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021. This database is based on an earlier work by James Aronson.
THIS WEBSITE AND THIS DATABASE ARE PROVIDED ON AN "AS IS" BASIS, AND YOU USE THEM AND RELY ON THEM AT YOUR OWN RISK.

Contact email: halophytes@sussex.ac.uk
Credits – Tim Flowers, Joaquim Santos, Moritz Jahns, Brian Warburton, Peter Reed