Impact of water deficit on the anatomical structure of more productive and less productive cashew trees (Anacardium occidentale L.) in Côte d’Ivoire

This study aimed to understand the mechanism of resilience of the anatomical tissues of organs of the cashew tree in water deficit in the different climatic zones of Côte d'Ivoire. To achieve this, samples of leaves and roots were taken from 55 cashew trees considered high producers (APHP) and...

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Main Authors: Abdoul Rahim Falk Ky, Mory Latif Konaté, N'Guessan François Kouamé
Format: Article
Language:English
Published: University of Ljubljana Press (Založba Univerze v Ljubljani) 2025-01-01
Series:Acta Biologica Slovenica
Subjects:
Online Access:https://journals.uni-lj.si/abs/article/view/19604
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author Abdoul Rahim Falk Ky
Mory Latif Konaté
N'Guessan François Kouamé
author_facet Abdoul Rahim Falk Ky
Mory Latif Konaté
N'Guessan François Kouamé
author_sort Abdoul Rahim Falk Ky
collection DOAJ
description This study aimed to understand the mechanism of resilience of the anatomical tissues of organs of the cashew tree in water deficit in the different climatic zones of Côte d'Ivoire. To achieve this, samples of leaves and roots were taken from 55 cashew trees considered high producers (APHP) and 164 neighboring less productive trees (non-APHP) during the dry and rainy seasons. The technique of double staining with green-carmino made it possible to obtain anatomical sections of transversely cut samples under an optical microscope. The thicknesses and surface areas of the sections were measured using Image J software. The thickness of the leaves parenchymas of APHP trees did not show any variation according to the season while the stomatal density increased during the dry season. The thickness of the leaves cortical and medullary parenchymas of non-APHP trees did not show any variation according to the season too but the non-APHPs’ palisade parenchyma thickness increased while their lacunar parenchyma thickness decreased from 37 ± 1.5 mm to 36 ± 3.6 mm during the dry season. The thickness of leaves’ both sides epidermis increased while the thickness of xylem bundles decreased during the dry season to both APHP and non-APHP trees. The number of the roots’ xylem vessels of APHP trees increased from 11 to 27 vessels/mm2 while those of non-APHP trees increased from 15 to 41 vessels/mm2 during the rainy season. The surface area of the midrib medullary parenchyma of APHP trees increased from 4300 ± 837 mm2 to 5800 ± 412 mm2 while those of non-APHP trees increased from 3400  ± 809 mm2 to 5200 ± 993 mm2 during the dry season. The thicknesses of the tissues of APHPs remained greater than those of non-APHPs, regardless of the sampling season.
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publisher University of Ljubljana Press (Založba Univerze v Ljubljani)
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spelling doaj-art-71ba7413082a48228c603f101da8af442025-01-16T08:23:41ZengUniversity of Ljubljana Press (Založba Univerze v Ljubljani)Acta Biologica Slovenica1854-30732025-01-0168110.14720/abs.68.01.19604Impact of water deficit on the anatomical structure of more productive and less productive cashew trees (Anacardium occidentale L.) in Côte d’IvoireAbdoul Rahim Falk Ky0Mory Latif Konaté1N'Guessan François Kouamé2Laboratory of Botany and Valorization of Plant Diversity, Doctoral School of Sciences, Technologies and Environment, Natural Sciences Training and Research Unit, Nangui Abrogoua University of Abidjan, 02 BP 801 Abidjan 02, Côte d'Ivoire.Department of Agriculture New Technologies, Fisheries Resources and Agro-industry, Training and Research Unit in Agriculture, Polytechnic University of San Pedro, BP V1800 San Pedro, Côte d’Ivoire.Laboratory of Plant Biology and Earth Sciences, Science and Technology Training and Research Unit, Alassane Ouattara University of Bouaké, 01 BP 18 Bouaké 01, Côte d’Ivoire.This study aimed to understand the mechanism of resilience of the anatomical tissues of organs of the cashew tree in water deficit in the different climatic zones of Côte d'Ivoire. To achieve this, samples of leaves and roots were taken from 55 cashew trees considered high producers (APHP) and 164 neighboring less productive trees (non-APHP) during the dry and rainy seasons. The technique of double staining with green-carmino made it possible to obtain anatomical sections of transversely cut samples under an optical microscope. The thicknesses and surface areas of the sections were measured using Image J software. The thickness of the leaves parenchymas of APHP trees did not show any variation according to the season while the stomatal density increased during the dry season. The thickness of the leaves cortical and medullary parenchymas of non-APHP trees did not show any variation according to the season too but the non-APHPs’ palisade parenchyma thickness increased while their lacunar parenchyma thickness decreased from 37 ± 1.5 mm to 36 ± 3.6 mm during the dry season. The thickness of leaves’ both sides epidermis increased while the thickness of xylem bundles decreased during the dry season to both APHP and non-APHP trees. The number of the roots’ xylem vessels of APHP trees increased from 11 to 27 vessels/mm2 while those of non-APHP trees increased from 15 to 41 vessels/mm2 during the rainy season. The surface area of the midrib medullary parenchyma of APHP trees increased from 4300 ± 837 mm2 to 5800 ± 412 mm2 while those of non-APHP trees increased from 3400  ± 809 mm2 to 5200 ± 993 mm2 during the dry season. The thicknesses of the tissues of APHPs remained greater than those of non-APHPs, regardless of the sampling season. https://journals.uni-lj.si/abs/article/view/19604cashew treeanatomyadaptationwater deficitCôte d'Ivoire
spellingShingle Abdoul Rahim Falk Ky
Mory Latif Konaté
N'Guessan François Kouamé
Impact of water deficit on the anatomical structure of more productive and less productive cashew trees (Anacardium occidentale L.) in Côte d’Ivoire
Acta Biologica Slovenica
cashew tree
anatomy
adaptation
water deficit
Côte d'Ivoire
title Impact of water deficit on the anatomical structure of more productive and less productive cashew trees (Anacardium occidentale L.) in Côte d’Ivoire
title_full Impact of water deficit on the anatomical structure of more productive and less productive cashew trees (Anacardium occidentale L.) in Côte d’Ivoire
title_fullStr Impact of water deficit on the anatomical structure of more productive and less productive cashew trees (Anacardium occidentale L.) in Côte d’Ivoire
title_full_unstemmed Impact of water deficit on the anatomical structure of more productive and less productive cashew trees (Anacardium occidentale L.) in Côte d’Ivoire
title_short Impact of water deficit on the anatomical structure of more productive and less productive cashew trees (Anacardium occidentale L.) in Côte d’Ivoire
title_sort impact of water deficit on the anatomical structure of more productive and less productive cashew trees anacardium occidentale l in cote d ivoire
topic cashew tree
anatomy
adaptation
water deficit
Côte d'Ivoire
url https://journals.uni-lj.si/abs/article/view/19604
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