Special Issues

Photosynthetic Responses to Biotic and Abiotic Stress

Submission Deadline: 31 December 2024 View: 4 Submit to Special Issue

Guest Editors

Prof. Dr. Michael Moustakas, Department of Botany, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
Dr. Ilektra Sperdouli, Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization-Dimitra, 57001 Thessaloniki, Greece

Summary

Abiotic and biotic stress factors are the main reasons of crop yield reduction. Photosynthesis, that is extremely responsive to various biotic and abiotic stresses is the device of crop productivity with a multidimensional relationship to plant growth. Plant responses to biotic stress is through a downregulation of photosynthesis but there are examples of compensatory stimulations with some plant species to be able to compensate for the resources lost to herbivory and do not suffer any growth decline after herbivore attack. Abiotic stress results to decreased photosynthetic efficiency and increased oxidative damage by the surplus reactive oxygen species (ROS) accumulation, that can harm the chloroplast, and particularly photosystem II (PSII). However, plants have developed several energetic approaches at the morphological, physiological and biochemical levels, allowing them to avoid and/or tolerate abiotic stress.


In the quest to meet the global demand for food, the photosynthetic function of food crops under environmental stress conditions poses a significant challenge for plant scientists and crop breeders. Manipulating photosynthesis offers promising opportunities to enhance crop yield. Hence, a comprehensive understanding of plant responses and a deeper comprehension of the photosynthetic machinery under environmental stresses can facilitate the development of high-yielding crop varieties. Manipulating plants with enhanced abiotic stress tolerance will involve a complete understanding of ROS signaling and the regulatory functions of several other components, including secondary metabolites, transcription factors, phytohormones, and protein kinases, in the responses of photosynthetic apparatus to biotic and abiotic stresses.


Continuous research efforts are dedicated to understanding the functioning of the photosynthetic machinery and exploring avenues for its improvement. This Research Topic aims to elucidate the mechanisms underlying the photosynthetic responses to biotic and abiotic stresses, thereby advancing our understanding of plant photosynthesis under stress conditions. Such knowledge can pave the way for the development of practical interventions aimed at increasing agricultural productivity, a critical aspect considering the current climate change scenarios. Recognizing how plants respond and adapt their metabolism to biotic and abiotic stresses is crucial in meeting global food and feed requirements.


Keywords

drought stress, salt stress, herbivores, heavy metal stress, light stress, UV radiation, temperature stress, nutrient deficiency, pathogens, reactive oxygen species

Published Papers


  • Open Access

    ARTICLE

    A Bibliometric Analysis Unveils Valuable Insights into the Past, Present, and Future Dynamics of Plant Acclimation to Temperature

    Yong Cui, Yongju Zhao, Shengnan Ouyang, Changchang Shao, Liangliang Li, Honglang Duan
    Phyton-International Journal of Experimental Botany, Vol.93, No.2, pp. 291-312, 2024, DOI:10.32604/phyton.2024.047281
    (This article belongs to the Special Issue: Photosynthetic Responses to Biotic and Abiotic Stress)
    Abstract Plant temperature acclimation is closely related to maintaining a positive carbon gain under future climate change. However, no systematic summary of the field has been conducted. Based on this, we analyzed data on plant temperature acclimation from the Web of Science Core Collection database using bibliometric software R, RStudio and VOSviewer. Our study demonstrated that a stabilized upward trajectory was noted in publications (298 papers) from 1986 to 2011, followed by a swift growth (373 papers) from 2012 to 2022. The most impactful journals were Plant Cell and Environment, boasting the greatest count of worldwide citations… More >

  • Open Access

    ARTICLE

    Involvement of the ABA- and H2O2-Mediated Ascorbate–Glutathione Cycle in the Drought Stress Responses of Wheat Roots

    Mengyuan Li, Zhongye Gao, Lina Jiang, Leishan Chen, Jianhui Ma
    Phyton-International Journal of Experimental Botany, Vol.93, No.2, pp. 329-342, 2024, DOI:10.32604/phyton.2024.046976
    (This article belongs to the Special Issue: Photosynthetic Responses to Biotic and Abiotic Stress)
    Abstract Abscisic acid (ABA), hydrogen peroxide (H2O2) and ascorbate (AsA)–glutathione (GSH) cycle are widely known for their participation in various stresses. However, the relationship between ABA and H2O2 levels and the AsA–GSH cycle under drought stress in wheat has not been studied. In this study, a hydroponic experiment was conducted in wheat seedlings subjected to 15% polyethylene glycol (PEG) 6000–induced dehydration. Drought stress caused the rapid accumulation of endogenous ABA and H2O2 and significantly decreased the number of root tips compared with the control. The application of ABA significantly increased the number of root tips, whereas the application… More >

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