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© 2025 by the authors. 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/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Coffea canephora genotypes adopt distinct strategies to cope with drought and rehydration. We hypothesized that the greater drought tolerance of genotype ‘3V’ compared to ‘A1’, previously reflected in physiological and anatomical leaf traits after two water-stress (WS) cycles, could also be observed in P–V curve responses, root and branch anatomy, leaf midrib elongation (CVL), and root distribution. The ‘3V’ and ‘A1’ plants were grown under well-watered (WW) conditions and two cycles of water stress (WS). The ‘3V’ was more sensitive to WS, with reduced branch xylem vessel density (BXVD), while ‘A1’ demonstrated increased BXVD. Root xylem vessel area (RXVA) decreased to a greater extent in ‘3V’ than in ‘A1’, and both genotypes showed increased bulk elastic modulus. Regardless of water conditions, ‘A1’ maintained a higher relative leaf water content at the turgor loss point (RWCTLP). Morphological acclimation did not occur in the second WS cycle. The ‘3V’ plants developed greater root mass in deeper soil layers than ‘A1’ under the WS condition. These findings suggest that ‘A1’ follows a conservative drought-avoidance strategy with lower physio-morphological plasticity, while ‘3V’ exhibits greater drought tolerance. Such responses highlighted coordinated physiological, morphological, and anatomical adaptations of the above- and below-ground organs for resource acquisition and conservation under WS.

Details

Title
Leaf to Root Morphological and Anatomical Indicators of Drought Resistance in Coffea canephora After Two Stress Cycles
Author
Guilherme A R de Souza 1   VIAFID ORCID Logo  ; Baroni, Danilo F 1 ; Wallace de P Bernado 1 ; Santos, Anne R 1   VIAFID ORCID Logo  ; Larissa C de S Barcellos 1 ; Letícia F T Barcelos 1   VIAFID ORCID Logo  ; Correia, Laísa Z 1 ; de Almeida, Claudio M 1 ; Abraão C Verdin Filho 2 ; Rodrigues, Weverton P 3   VIAFID ORCID Logo  ; Ramalho, José C 4   VIAFID ORCID Logo  ; Rakočević, Miroslava 1   VIAFID ORCID Logo  ; Campostrini, Eliemar 1   VIAFID ORCID Logo 

 Setor de Fisiologia Vegetal, Laboratório de Melhoramento Genético Vegetal, Centro de Ciências e Tecnologias Agropecuárias, Universidade Estadual do Norte Fluminense, Avenida Alberto Lamego 2000, Parque Califórnia, Campos dos Goytacazes 28013-602, RJ, Brazil; [email protected] (G.A.R.d.S.); [email protected] (D.F.B.); [email protected] (W.d.P.B.); [email protected] (A.R.S.); [email protected] (L.C.d.S.B.); [email protected] (L.F.T.B.); [email protected] (L.Z.C.); [email protected] (C.M.d.A.); [email protected] (E.C.) 
 Instituto Capixaba de Pesquisa, Assistência Técnica e Extensão Rural, Vitória 9052-010, ES, Brazil; [email protected] 
 Centro de Ciências Agrárias, Universidade Estadual da Região Tocantina do Maranhão, Avenida Agrária 100, Imperatriz 65900-001, MA, Brazil; [email protected] 
 Laboratório Interações Planta–Ambiente & Biodiversidade (PlantStress&Biodiversity), Centro de Estudos Florestais (CEF), Laboratório Associado TERRA, Instituto Superior de Agronomia (ISA), Universidade de Lisboa (ULisboa), Av. República, 2784-505 Oeiras, Portugal; Unidade de Geobiociências, Geoengenharias e Geotecnologias (GeoBioTec), Faculdade de Ciências Tecnologia, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal 
First page
574
Publication year
2025
Publication date
2025
Publisher
MDPI AG
e-ISSN
20770472
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3181334233
Copyright
© 2025 by the authors. 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/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.