Annals of the Brazilian Congress of Plant Physiology and Ibero-latinamerican Congress of Plant Biology

CHARACTERIZATION OF THE MAIN DETERMINANTS OF WATER CONVERSION IN CERRADO PLANTS

Published in 26/09/2022 - ISBN: 978-65-5941-830-5

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Paper Title
CHARACTERIZATION OF THE MAIN DETERMINANTS OF WATER CONVERSION IN CERRADO PLANTS
Authors
  • Priscila Ferreira Batista
  • Sabrina Emanuella da Silva Almeida
  • Kamila Mendes Batista Alencar
  • Leticia Ferreira de Sousa
  • Lucas Loram LOURENCO
  • Paulo Eduardo de Menezes Silva
  • Igor Manoel Paulo Goulart De Abreu
  • Valdeir Martins Alves Filho
  • Fernanda Farnese
Modality
Abstract
Subject area
Plant Physiology
Publishing Date
26/09/2022
Country of Publishing
Brasil
Language of Publishing
Inglês
Paper Page
https://www.even3.com.br/anais/cbfv2022_registration/512864-characterization-of-the-main-determinants-of-water-conversion-in-cerrado-plants
ISBN
978-65-5941-830-5
Keywords
Residual transpiration, Water restriction, Stem, Cuticle, Stomata
Summary
Water is the main determinant of species performance, distribution and survival. It is already known that even after plants close their stomata completely, they continue to lose water through the leaves and bark, representing an inevitable leakage, which has a great impact on water use and conservation strategies among species. This residual transpiration of water through leaves and stems is a fundamental characteristic in determining plant survival in case of water stress. Therefore, the study sought to verify water leaks through hydraulic characters in different species of the Cerrado. For this, an experiment was carried out at IF Goiano, Rio Verde - Go, with seedlings representative of the Cerrado, namely: Aspidosperma subincanum, Cordia superba, Cordiera sessillis, Diospyros sericea and Lafoencia pacari. Analyzes were performed: stomatal conductance (gs), residual leaf (gleaf-res) and stem (gbark) transpiration, leaf succulence and turgor loss point (?w OPPT). Leaf succulence and gs did not differ statistically, and for ?w OPPT only the species C. superba was lower, indicating that this species is able to close the stomata at a more positive water potential, which may be a strategy to minimize the effects caused by high gleaf-res. In relation to the residual water losses, A. subincanum and D. sericea showed greater loss through the stem lenticels compared to the other species. As for water loss through the cuticle and incompletely closed stomata, the highest values were observed for A. subincanum, C. superba and L. pacari. The species that obtained the highest gleaf-res and gbark was A. subincanum, factors that indicate that this species may face a faster depletion of its water reserves in conditions of water deficit. The results show that Cerrado species differ from each other in terms of water conservation mechanisms, which will probably result in differential tolerance and survival during severe droughts.
Title of the Event
XVIII Brazilian Congress of Plant Physiology and I Ibero-latinoamerican Congress of Plant Biology
City of the Event
Porto Alegre
Title of the Proceedings of the event
Annals of the Brazilian Congress of Plant Physiology and Ibero-latinamerican Congress of Plant Biology
Name of the Publisher
Even3
Means of Dissemination
Meio Digital

How to cite

BATISTA, Priscila Ferreira et al.. CHARACTERIZATION OF THE MAIN DETERMINANTS OF WATER CONVERSION IN CERRADO PLANTS.. In: Annals of the Brazilian Congress of Plant Physiology and Ibero-latinamerican Congress of Plant Biology. Anais...Porto Alegre(RS) CEPUCRS, 2022. Available in: https//www.even3.com.br/anais/cbfv2022_registration/512864-CHARACTERIZATION-OF-THE-MAIN-DETERMINANTS-OF-WATER-CONVERSION-IN-CERRADO-PLANTS. Access in: 07/06/2025

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