Plant Stress Adaptation Mechanisms: Insight into Molecular Responses and New Biotechnological Possibilities

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Response to Abiotic Stress and Climate Change".

Deadline for manuscript submissions: closed (1 June 2026) | Viewed by 2263

Editors


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Guest Editor
School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand
Interests: plant biotechnology; in vitro plant breeding; micropropagation; phytoremediation; genetic modifications of plants; bio-printing
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Guest Editor
Department of Plant Agriculture, University of Guelph, Guelph, ON N1G 2W1, Canada
Interests: plant genetics and biotechnology; plant-environment interactions; secondary metabolites; medicinal and aromatic plants; biotic and abiotic resistance
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Much has been learned from studying how wild plants’ morphological, structural and physiological adaptations enable them to survive and reproduce under hostile abiotic and biotic conditions in their natural environments. For example, cacti have thorns to protect themselves against herbivores and have evolved a specialized photosynthetic pathway, the Crassulacean Acid Metabolism (CAM), that permits water conservation in a dry desert environment. The challenges of various forms of stress, such as drought and heat, on crop plants have huge implications for food security worldwide. The many lessons that structural and physiological adaptations in wild plants can teach us might be transferable to crop plants or applicable for the development of new, more stress-resilient crop plant varieties. The aim of this Special Issue is to collect investigations into the molecular mechanisms underlying the responses associated with stress adaptation and resilience in crop plants. In addition, studies that can shed light on new biotechnological avenues to improve plant stress adaptation and resilience are also within the scope of this Special Issue.

Dr. David W. M. Leung
Dr. Rambod Abiri
Guest Editors

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Keywords

  • abiotic stress
  • biotic stress
  • epigenetic changes
  • genetic modifications
  • oxidative stress
  • plant hormones
  • signaling

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Published Papers (1 paper)

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Research

14 pages, 1613 KB  
Article
Pollen Viability and Anomalies in European Hazelnut: Cultivar Traits or Environmental Effect?
by Claudio Brandoli, Sonia Demasi, Valeria Fochi, Giovanni Caccialupi, Valerio Cristofori, Cristian Silvestri, Consolata Siniscalco, Claudio Todeschini and Elisabetta Sgarbi
Plants 2025, 14(23), 3576; https://doi.org/10.3390/plants14233576 - 23 Nov 2025
Viewed by 1615
Abstract
Assessing pollen viability and anomalies is essential to optimize resources and improve hazelnut productivity. However, knowledge of pollen viability dynamics across cultivars and environments remains limited. This study applied impedance flow cytometry to (i) monitor pollen hydration and define optimal rehydration time, (ii) [...] Read more.
Assessing pollen viability and anomalies is essential to optimize resources and improve hazelnut productivity. However, knowledge of pollen viability dynamics across cultivars and environments remains limited. This study applied impedance flow cytometry to (i) monitor pollen hydration and define optimal rehydration time, (ii) quantify pollen viability over three flowering seasons, and (iii) evaluate genetic, environmental, and agronomic influences on viable and anomalous pollen formation. Viable pollen showed an adaptive response, restoring high viability (~85%) after four hours of hydration following dehydration stress. Viability displayed cultivar-specific patterns, stable across years but variable among sites. In Viterbo (central Italy, Mediterranean climate), flowering occurred 2–4 weeks earlier than in northern orchards (Piedmont, continental climate). Wild-type accessions exhibited higher viability and minimal anomalous pollen (<3%), whereas cultivated genotypes maintained abundant anomalous pollen (30–50%) across sites and seasons. Multifactorial analysis revealed that both genotype and environment affected viable pollen, while anomalous pollen depended mainly on genotype. Overall, pollen viability results from the interaction between genetic predisposition and local conditions, whereas anomalous pollen reflects stable, genotype-linked traits. These findings highlight the dominant role of cultivar-specific genetics in hazelnut pollen quality, providing a framework for breeding and orchard management strategies. Full article
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