How Persian Oak (Quercus brantii) Copes with Crown Dieback: A Biochemical Perspective

Crown dieback of oak is a critical issue in arid and semi-arid regions, threatening forest sustainability and biodiversity. This study explores the biochemical responses of Persian oak trees under varying health conditions to uncover the mechanisms driving oak decline. Key parameters such as photosy...

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Bibliographic Details
Published in:Forest science and technology Vol. 21; no. 3; pp. 292 - 301
Main Authors: Iranmanesh, Yaghoub, Mehrabi, Ali Ashraf, Jahanbazi, Hassan, Pourhashemi, Mehdi, Shariat, Anahita, Zarafshar, Mehrdad
Format: Journal Article
Language:English
Published: Seoul Taylor & Francis 03.07.2025
Taylor & Francis Ltd
Taylor & Francis Group
한국산림과학회
Subjects:
Accumulation
antioxidant enzymes
Antioxidants
Arid regions
Arid zones
Biodiversity
Catalase
Climate change
Climate effects
climate resilience
Decline
Dieback
drought
Enzymatic activity
Enzymes
forest decline
Forestry and Wood Technology
Lipid peroxidation
Lipids
mechanisms
Oak
osmolytes
Oxidative stress
Peroxidase
Peroxidation
Photosynthesis
Photosynthetic pigments
Pigments
Principal components analysis
responses
Semi arid areas
Semiarid zones
Skog och träteknik
stress
Sustainability management
Sustainable practices
Trees
임학
ISSN:2158-0103, 2158-0715, 2158-0715
Online Access:Get full text
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Summary:Crown dieback of oak is a critical issue in arid and semi-arid regions, threatening forest sustainability and biodiversity. This study explores the biochemical responses of Persian oak trees under varying health conditions to uncover the mechanisms driving oak decline. Key parameters such as photosynthetic pigments, antioxidant enzyme activities, osmolyte accumulation, and oxidative stress markers were analyzed. Despite stable photosynthetic pigments in both healthy and declining trees, catalase and peroxidase antioxidant enzyme levels were significantly higher in declining trees, highlighting their role in mitigating oxidative damage. Proline accumulation emerged as a vital osmoprotectant, while malondialdehyde (MDA) levels reflected heightened lipid peroxidation and oxidative stress. Principal Component Analysis (PCA) further differentiated healthy and declining trees, identifying antioxidant activity as a significant factor. These findings provide valuable insights into Persian oak resilience, offering a foundation for early detection of decline and sustainable management practices to mitigate the effects of climate change on oak forests.
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https://www.tandfonline.com/doi/full/10.1080/21580103.2025.2512206
ISSN:2158-0103
2158-0715
2158-0715
DOI:10.1080/21580103.2025.2512206