Olive Stress Alleviation Strategies

A special issue of Horticulturae (ISSN 2311-7524). This special issue belongs to the section "Biotic and Abiotic Stress".

Deadline for manuscript submissions: 16 October 2025 | Viewed by 1807

Special Issue Editors


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School of Applied Arts and Sustainable Design, Hellenic Open University, Parodos Aristotelous 18, 26335 Patras, Greece
Interests: crop protection; antimicrobial activity; phytochemicals; food science; environmental pollution
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Agriculture, Faculty of Agricultural Sciences, University of Patras, New Buildings, 30200 Missolonghi, Greece
Interests: pomology; abiotic stress; biostimulants; hydroponics; berries; plant responses; plant propagation; tissue culture

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Guest Editor
Hellenic Agricultural Organization ELGO-DIMITRA, Olive Cultivation Lab, Institute of Olive Tree, Subtropical Crops and Viticulture, 73134 Chania, Greece
Interests: climate change; agricultural sustainability; circular economy; soil, water and biodiversity conservation; remote sensing; plant breeding; ecosystem services; olive growing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

“Olive Stress Alleviation Strategies” is a Special Issue that will contain a diverse collection of original manuscripts regarding the induction of olive trees’ coping mechanisms to stressful conditions. Stress conditions may arise due to abiotic factors when olives are exposed to drought, salinity, extreme temperatures, waterlogging, pollution, radiation and biotic factors, such as microorganisms and animals. The high spatial frequency of monumental olive tree spots in cultivation zones coupled with entrepreneurial olive orchards have revealed a special environmental co-evolutionary trend where stresses are—in the long term—manageable. In contrast, short periods of highly intense stress for olive orchards require human intervention and defined strategies in order to mitigate the damages caused to their growth, physiology and immunology while simultaneously sustaining fruit production.

To address all these issues, in-depth knowledge of restoring olives towards a non-challenged status is needed. Efficacy, efficiency and the discovery of background mechanisms in applied alleviation methods are essential to improve our understanding in this area and form solid protocol schemes.

Therefore, this Special Issue, titled “Olive Stress Alleviation Strategies”, welcomes manuscripts comprising basic and applied studies on the following topics:

  • Mechanistic basis of abiotic and biotic stresses in olives;
  • Efficiency and efficacy of alleviation stress strategies in olives;
  • Exogenously and endogenously stress alleviation induced mechanisms;
  • In silico optimization studies on olive alleviation stress strategies;
  • Optimized regulation of minerals in olives for stress mitigation purposes;
  • Novel and improved alleviation stress strategies for drought and saline conditions;
  • Smart olive monitoring for real-time, dedicated alleviation schemes;
  • Biotechnologically and genetically induced or modified strategies to alleviate olive stresses;
  • Role of secondary plant metabolism on stress alleviation and stress factor intensity classification;
  • Biochemical, physiological and immunological aspects of olive tree recovery from stress conditions;
  • Applied alleviation stress practices in olives;
  • Alleviation practices in multiple-type synchronous and asynchronous olive stress conditions;
  • Contribution and plasticity of stress memories in olive trees;
  • Pre-harvest and post-harvest alleviation schemes for stressed olive fruits.

Contributions from early-career researchers and interdisciplinary scientists as well as propositions for research topics will be welcomed.

Dr. Stefanos Leontopoulos
Dr. Helen Kalorizou
Dr. Georgios Koubouris
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Horticulturae is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • olive tree
  • abiotic stresses
  • biotic stresses
  • sustainable yield
  • stress responses
  • alleviation stress mechanisms
  • stress memory
  • genetic manipulation
  • applied stress recovery

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Published Papers (2 papers)

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Research

26 pages, 3521 KiB  
Article
Salinity Tolerance of Novel and Established Olive (Olea europaea L.) Cultivars for Super-High-Density Systems
by Xavier Rius-García, María Videgain-Marco, José Casanova-Gascón, Luis Acuña-Rello and Pablo Martín-Ramos
Horticulturae 2025, 11(8), 957; https://doi.org/10.3390/horticulturae11080957 - 13 Aug 2025
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Abstract
The olive industry is transitioning from traditional to super-high-density (SHD) systems to optimize production costs and address labor shortages. This shift coincides with increasing challenges from soil salinization and deteriorating irrigation water quality. This study evaluated salinity tolerance in three novel olive cultivars [...] Read more.
The olive industry is transitioning from traditional to super-high-density (SHD) systems to optimize production costs and address labor shortages. This shift coincides with increasing challenges from soil salinization and deteriorating irrigation water quality. This study evaluated salinity tolerance in three novel olive cultivars (Lecciana, Coriana, and Sikitita) against the established SHD references Arbequina and Arbosana under controlled greenhouse conditions over five months with increasing NaCl concentrations (25, 50, and 75 mM). The analysis revealed distinct adaptation mechanisms among cultivars. Arbosana exhibited balanced tolerance across parameters, with minimal biomass reduction and remarkable photosynthetic resilience. Lecciana demonstrated superior ion regulation, maintaining the highest K+/Na+ ratios across all salinity levels despite pronounced shoot growth sensitivity at high salinity. Sikitita showed moderate tolerance through biomass maintenance but with significant photosynthetic sensitivity under stress. Arbequina displayed effective chloride exclusion and consistent shoot growth despite biomass sensitivity, whereas Coriana presented notable biomass increases at moderate salinity but poor ion discrimination. Tissue-specific analysis revealed common compartmentalization patterns across cultivars, with roots accumulating the highest Na+ and Cl concentrations. These data identify Arbosana and Lecciana as promising candidates for salinized SHD orchards. Full article
(This article belongs to the Special Issue Olive Stress Alleviation Strategies)
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44 pages, 4144 KiB  
Article
Amelioration of Olive Tree Indices Related to Salinity Stress via Exogenous Administration of Amino Acid Content: Real Agronomic Effectiveness or Mechanistic Restoration Only?
by Helen Kalorizou, Paschalis Giannoulis, Stefanos Leontopoulos, Georgios Koubouris, Spyridoula Chavalina and Maria Sorovigka
Horticulturae 2025, 11(8), 890; https://doi.org/10.3390/horticulturae11080890 - 1 Aug 2025
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Abstract
Salinization of olive orchards constitutes a front-line agronomic challenge for farmers, consumers, and the scientific community as food security, olive logistics, and land use become more unsustainable and problematic. Plantlets of two olive varieties (var. Kalamon and var. Koroneiki) were tested for their [...] Read more.
Salinization of olive orchards constitutes a front-line agronomic challenge for farmers, consumers, and the scientific community as food security, olive logistics, and land use become more unsustainable and problematic. Plantlets of two olive varieties (var. Kalamon and var. Koroneiki) were tested for their performance under soil saline conditions, in which L-methionine, choline-Cl, and L-proline betaine were applied foliarly to alleviate adverse effects. The ‘Kalamon’ variety ameliorated its photosynthetic rates when L-proline betaine and L-methionine were administered at low saline exposure. The stressed varieties achieved higher leaf transpiration rates in the following treatment order: choline-Cl > L-methionine > L-proline betaine. Choline chloride supported stomatal conductance in stressed var. Kalamon olives without this pattern, which was also followed by var. Koroneiki. Supplementation regimes created a mosaic of responses on varietal water use efficiency under stress. The total phenolic content in leaves increased in both varieties after exogenous application only at the highest levels of saline stress. None of the substances applied to olive trees could stand alone as a tool to mitigate salinity stress in order to be recommended as a solid agronomic practice. The residual exploitation of amino acids by the olive orchard microbiome must also be considered as part of an environmentally friendly, integrated strategy to mitigate salinity stress. Full article
(This article belongs to the Special Issue Olive Stress Alleviation Strategies)
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