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How Tree Decline Varies the Anatomical Features in Quercus brantii

Drought has serious effects on forests, especially semi-arid and arid forests, around the world. Zagros Forest in Iran has been severely affected by drought, which has led to the decline of the most common tree species, Persian oak (Quercus brantii). The objective of this study was to determine the...

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Autores principales: Soheili, Forough, Abdul-Hamid, Hazandy, Almasi, Isaac, Heydari, Mehdi, Tongo, Afsaneh, Woodward, Stephen, Naji, Hamid Reza
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9866467/
https://www.ncbi.nlm.nih.gov/pubmed/36679089
http://dx.doi.org/10.3390/plants12020377
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author Soheili, Forough
Abdul-Hamid, Hazandy
Almasi, Isaac
Heydari, Mehdi
Tongo, Afsaneh
Woodward, Stephen
Naji, Hamid Reza
author_facet Soheili, Forough
Abdul-Hamid, Hazandy
Almasi, Isaac
Heydari, Mehdi
Tongo, Afsaneh
Woodward, Stephen
Naji, Hamid Reza
author_sort Soheili, Forough
collection PubMed
description Drought has serious effects on forests, especially semi-arid and arid forests, around the world. Zagros Forest in Iran has been severely affected by drought, which has led to the decline of the most common tree species, Persian oak (Quercus brantii). The objective of this study was to determine the effects of drought on the anatomical structure of Persian oak. Three healthy and three declined trees were sampled from each of two forest sites in Ilam Forest. Discs were cut at breast height, and three sapwood blocks were taken near the bark of each tree for sectioning. The anatomical characteristics measured included fiber length (FL), fiber wall thickness (FWT), number of axial parenchymal cells (NPC), ray number (RN), ray width (RW), and number of calcium oxalate crystals. Differences between healthy and declined trees were observed in the abundance of NPC and in RN, FL, and FWT, while no differences occurred in the number of oxalate crystals. The decline had uncertain effects on the FL of trees from sites A and B, which showed values of 700.5 and 837.3 μm compared with 592.7 and 919.6 μm in healthy trees. However, the decline resulted in an increase in the FWT of trees from sites A and B (9.33 and 11.53 μm) compared with healthy trees (5.23 and 9.56 μm). NPC, RN, and RW also increased in declined individuals from sites A and B (28.40 and 28.40 mm(−1); 41.06 and 48.60 mm(−1); 18.60 and 23.20 μm, respectively) compared with healthy trees (20.50 and 19.63 mm(−2); 31.60 and 28.30 mm(−2); 17.93 and 15.30 μm, respectively). Thus, drought caused measurable changes in the anatomical characteristics of declined trees compared with healthy trees.
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spelling pubmed-98664672023-01-22 How Tree Decline Varies the Anatomical Features in Quercus brantii Soheili, Forough Abdul-Hamid, Hazandy Almasi, Isaac Heydari, Mehdi Tongo, Afsaneh Woodward, Stephen Naji, Hamid Reza Plants (Basel) Article Drought has serious effects on forests, especially semi-arid and arid forests, around the world. Zagros Forest in Iran has been severely affected by drought, which has led to the decline of the most common tree species, Persian oak (Quercus brantii). The objective of this study was to determine the effects of drought on the anatomical structure of Persian oak. Three healthy and three declined trees were sampled from each of two forest sites in Ilam Forest. Discs were cut at breast height, and three sapwood blocks were taken near the bark of each tree for sectioning. The anatomical characteristics measured included fiber length (FL), fiber wall thickness (FWT), number of axial parenchymal cells (NPC), ray number (RN), ray width (RW), and number of calcium oxalate crystals. Differences between healthy and declined trees were observed in the abundance of NPC and in RN, FL, and FWT, while no differences occurred in the number of oxalate crystals. The decline had uncertain effects on the FL of trees from sites A and B, which showed values of 700.5 and 837.3 μm compared with 592.7 and 919.6 μm in healthy trees. However, the decline resulted in an increase in the FWT of trees from sites A and B (9.33 and 11.53 μm) compared with healthy trees (5.23 and 9.56 μm). NPC, RN, and RW also increased in declined individuals from sites A and B (28.40 and 28.40 mm(−1); 41.06 and 48.60 mm(−1); 18.60 and 23.20 μm, respectively) compared with healthy trees (20.50 and 19.63 mm(−2); 31.60 and 28.30 mm(−2); 17.93 and 15.30 μm, respectively). Thus, drought caused measurable changes in the anatomical characteristics of declined trees compared with healthy trees. MDPI 2023-01-13 /pmc/articles/PMC9866467/ /pubmed/36679089 http://dx.doi.org/10.3390/plants12020377 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Soheili, Forough
Abdul-Hamid, Hazandy
Almasi, Isaac
Heydari, Mehdi
Tongo, Afsaneh
Woodward, Stephen
Naji, Hamid Reza
How Tree Decline Varies the Anatomical Features in Quercus brantii
title How Tree Decline Varies the Anatomical Features in Quercus brantii
title_full How Tree Decline Varies the Anatomical Features in Quercus brantii
title_fullStr How Tree Decline Varies the Anatomical Features in Quercus brantii
title_full_unstemmed How Tree Decline Varies the Anatomical Features in Quercus brantii
title_short How Tree Decline Varies the Anatomical Features in Quercus brantii
title_sort how tree decline varies the anatomical features in quercus brantii
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9866467/
https://www.ncbi.nlm.nih.gov/pubmed/36679089
http://dx.doi.org/10.3390/plants12020377
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