Sementes de Senna alata (L.) Roxb. (Fabaceae) coletadas em uma área de borda apresentam memória de hidratação?

Adson De Brito Pereira; Gilberto Nascimento Silva; Cristianne Santana Santos; Igor Silva da Hora; Marcos Vinicius Meiado

doi:10.14808/sci.plena.2025.061202

Authors

Adson De Brito Pereira Universidade Federal de Sergipe
Gilberto Nascimento Silva Universidade Federal de Sergipe
Cristianne Santana Santos Universidade Federal de Sergipe
Igor Silva da Hora
Marcos Vinicius Meiado Universidade Federal de Sergipe

DOI:

https://doi.org/10.14808/sci.plena.2025.061202

Keywords:

HD cycles, water memory, Atlantic forest

Abstract

The soaking process can occur discontinuously in environments with irregular rainfall and high temperatures, causing discontinuous hydration. This can result in hydration memory, which provides benefits for germination and seedling development, such as increased tolerance to environmental stress. This study aims to determine whether discontinuous hydration in Senna alata (L.) Roxb. (Fabaceae) seeds collected in an edge area present hydration memory when subjected to a water deficit. The seeds were collected in an area of Atlantic Forest under edge effect in the municipality of Aracaju, Sergipe. Initially, the soaking and dehydration curves were determined and then the seeds were subjected to discontinuous hydration through 0 (control), 1 and 2 cycles of hydration and dehydration (HD). After this, the seeds were placed to germinate in Polyethylene Glycol (PEG) 6000 solutions at concentrations of 0.0, -0.2, -0.4 and -0.6 MPa to simulate water deficit. The data was analyzed using STATISTICA 13 software. S. alata seeds are tolerant to water deficit and the HD cycles benefited the passage through the stress, showing a higher percentage of germination, in less time, being faster when compared to the control group. It can be concluded that S. alata collected in an area under edge effect has seed hydration memory, which is a relevant characteristic for the establishment of the species in environments where water deficit is evident.

Author Biographies

Adson De Brito Pereira, Universidade Federal de Sergipe

She has a degree in Biological Sciences (Full Degree) from the Federal University of Sergipe, Campus Professor Alberto Carvalho (UFS-CAMPUSITA), located in Itabaiana, Sergipe. During his undergraduate studies, he developed work related to the presence of memory in plants and its physiological aspects, under the guidance of Professor Dr. Marcos Vinicius Meiado. He is currently a master's student in the Postgraduate Program in Physiological Sciences (PROCFIS).

Gilberto Nascimento Silva, Universidade Federal de Sergipe

Possui graduação em Ciências Biológicas (Licenciatura Plena) pela Universidade Federal de Sergipe, Campus Professor Alberto Carvalho (UFS-CAMPUSITA), localizado em Itabaiana, Sergipe. Durante a graduação, desenvolveu trabalhos relacionados à presença de memória em plantas e seus aspectos fisiológicos, sob a orientação do Professor Dr. Marcos Vinicius Meiado.

Cristianne Santana Santos, Universidade Federal de Sergipe

Degree in Biological Sciences from the Federal University of Sergipe (UFS). Master's and PhD in the Postgraduate Program in Ecology and Conservation (PPEC) at the Federal University of Sergipe (UFS). She is an intern at the Seed Physiology Laboratory (LAFISE) of the Department of Biosciences (DBCI), where she carries out her research. She has experience in Botany, with an emphasis on Plant Ecophysiology of Semi-Arid Environments, working mainly on the following subjects: seed germination, Cactaceae, conservation of endangered species, initial seedling development, water memory and seed desiccation tolerance.

Igor Silva da Hora

He holds a bachelor's degree in Biological Sciences from the Federal University of Sergipe (UFS), a master's degree from the Postgraduate Program in Ecology and Conservation (PPEC) and is currently a doctoral student in Ecology and Conservation (PPEC) at the same institution. He has a specialization in Biology and Chemistry Teaching Methodology from Faculdade Dom Alberto and is an effective teacher of basic education in the state of Bahia, as well as a trainee at the Seed Physiology Laboratory (LAFISE) of the Department of Biosciences (DBCI - UFS), where he carried out his undergraduate research. He has experience in Botany, with an emphasis on Plant Ecophysiology of Semi-Arid Environments, working mainly on the following subjects: ex situ conservation, seed germination, seed longevity, Cactaceae, conservation of endangered species, initial seedling development, allelopathy, effects of abiotic stresses and seed hydration memory.

Marcos Vinicius Meiado, Universidade Federal de Sergipe

Possui graduação em Ciências Biológicas - Bacharelado pela Universidade Federal de Pernambuco (2005), Mestrado (2008) e Doutorado (2012) em Biologia Vegetal pela mesma instituição. Atualmente é professor do Departamento de Biociências (DBCI), da Universidade Federal de Sergipe (UFS). Tem experiência na área de Botânica, com ênfase em Ecofisiologia Vegetal de Ambientes Semiáridos, atuando, principalmente, nos seguintes temas: alelopatia, banco de sementes do solo, Cactaceae, conservação de espécies ameaçadas de extinção, desenvolvimento inicial, germinação, memória de hidratação de sementes e justiça ambiental. Professor permanente do Programa de Pós-Graduação em Ecologia e Conservação (PPEC / UFS São Cristóvão), onde realiza estudos e orienta trabalhos nas linhas de pesquisa "Biodiversidade da Caatinga" e "Restauração de Áreas Degradadas"; bem como do Programa de Pós-Graduação em Ciências Naturais (PPGCN / UFS Itabaiana), orientando na linha de pesquisa "Biodiversidade e Meio Ambiente" e "Ensino de Ciências Naturais".