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Volume 16
Issue 5
10.3390/f16050770
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Screening Genipa americana Progenies for Their Ability to Maintain Leaf Vitality Under Severe Dehydration Using Chlorophyll Fluorescence †

by
Catriane Sousa-Santos
1,*,
Junior Pastor Pérez-Molina
2,
Amanda Freitas Cerqueira
3,
Ândrea Carla Dalmolin
3,
Álvaro Alves de Almeida
1,
Martielly Santana dos Santos
4 and
Marcelo Schramm Mielke
4
1
Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz (UESC), Rodovia Jorge Amado km 16, Ilhéus CEP 45662-900, BA, Brazil
2
Laboratorio de Ecología Funcional y Ecosistemas Tropicales (LEFET), Escuela de Ciencias Biológicas, Universidad Nacional, Omar Dengo Campus, Heredia 40101, Costa Rica
3
Centro de Formação em Ciências Agroflorestais, Universidade Federal do Sul da Bahia (UFSB), BR 415 km 22, Ilhéus CEP 45653-919, BA, Brazil
4
Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz (UESC), Rodovia Jorge Amado km 16, Ilhéus CEP 45662-900, BA, Brazil
*
Author to whom correspondence should be addressed.
†
This manuscript is part of a Ph.D. Thesis by the first author. Available online: https://ppgpv.uesc.br/in/teses/ (accessed on 26 April 2025).
Forests 2025, 16(5), 770; https://doi.org/10.3390/f16050770 (registering DOI)
Submission received: 20 February 2025 / Revised: 13 April 2025 / Accepted: 24 April 2025 / Published: 30 April 2025
(This article belongs to the Section Forest Ecophysiology and Biology)
Versions Notes

Abstract

Damage to the photosynthetic apparatus during leaf dehydration is an indicator of the maintenance of leaf vitality and the resilience of tree seedlings to severe drought. Genipa americana is a tree widely distributed in the neotropical region but with great ecological and sociocultural importance in the south of the state of Bahia, Brazil, where its fruits are harvested from subspontaneous trees. This study aimed to compare the feasibility of the maximum quantum efficiency of photosystem II (Fv/Fm) and performance indexes derived from the JIP test, i.e., performance index on absorption basis (PIabs) and total performance index (PItotal), for screening G. americana seedlings from different mother plants for leaf damage caused by dehydration. From leaf dehydration curves, we calculated the values of relative water content (RWC) in which Fv/Fm, PIabs, and PItotal reach a loss of 10% and 50% in relation to the values of fully hydrated leaves. PItotalwas the only parameter that revealed consistent significant differences between progenies for RWC at 50% of percentage loss. Significant differences were observed among progenies for leaf traits; however, no correlation was detected between these traits and chlorophyll fluorescence parameters. Monitoring the PItotal values during leaf dehydration is a useful tool for screening G. americana progenies in relation to their capacity to maintain leaf vitality under occasional severe droughts.
Keywords: extreme weather events; forest restoration; photochemical efficiency; relative water content extreme weather events; forest restoration; photochemical efficiency; relative water content

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MDPI and ACS Style

Sousa-Santos, C.; Pérez-Molina, J.P.; Cerqueira, A.F.; Dalmolin, Â.C.; Almeida, Á.A.d.; Santos, M.S.d.; Mielke, M.S. Screening Genipa americana Progenies for Their Ability to Maintain Leaf Vitality Under Severe Dehydration Using Chlorophyll Fluorescence. Forests 2025, 16, 770. https://doi.org/10.3390/f16050770

AMA Style

Sousa-Santos C, Pérez-Molina JP, Cerqueira AF, Dalmolin ÂC, Almeida ÁAd, Santos MSd, Mielke MS. Screening Genipa americana Progenies for Their Ability to Maintain Leaf Vitality Under Severe Dehydration Using Chlorophyll Fluorescence. Forests. 2025; 16(5):770. https://doi.org/10.3390/f16050770

Chicago/Turabian Style

Sousa-Santos, Catriane, Junior Pastor Pérez-Molina, Amanda Freitas Cerqueira, Ândrea Carla Dalmolin, Álvaro Alves de Almeida, Martielly Santana dos Santos, and Marcelo Schramm Mielke. 2025. "Screening Genipa americana Progenies for Their Ability to Maintain Leaf Vitality Under Severe Dehydration Using Chlorophyll Fluorescence" Forests 16, no. 5: 770. https://doi.org/10.3390/f16050770

APA Style

Sousa-Santos, C., Pérez-Molina, J. P., Cerqueira, A. F., Dalmolin, Â. C., Almeida, Á. A. d., Santos, M. S. d., & Mielke, M. S. (2025). Screening Genipa americana Progenies for Their Ability to Maintain Leaf Vitality Under Severe Dehydration Using Chlorophyll Fluorescence. Forests, 16(5), 770. https://doi.org/10.3390/f16050770

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