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Evidence of combined flower thermal and drought vulnerabilities portends reproductive failure under hotter-drought conditions.
Aun, Marina Alves; Farnese, Fernanda; Loram-Lourenço, Lucas; de Abreu, Igor Manoel Paulo Goulart; Silva, Brenner Ryan Arantes; Freitas, Jober Condé Evangelista; Filho, Valdeir Martins Alves; Silva, Fabiano Guimarães; Franco, Augusto Cesar; Hammond, William M; Cochard, Hervé; Menezes-Silva, Paulo Eduardo.
Afiliação
  • Aun MA; Federal Institute of Education, Science and Technology Goiano, Rio Verde Campus, Rio Verde, Brazil.
  • Farnese F; Federal Institute of Education, Science and Technology Goiano, Rio Verde Campus, Rio Verde, Brazil.
  • Loram-Lourenço L; Federal Institute of Education, Science and Technology Goiano, Rio Verde Campus, Rio Verde, Brazil.
  • de Abreu IMPG; Federal Institute of Education, Science and Technology Goiano, Rio Verde Campus, Rio Verde, Brazil.
  • Silva BRA; Federal Institute of Education, Science and Technology Goiano, Rio Verde Campus, Rio Verde, Brazil.
  • Freitas JCE; Federal Institute of Education, Science and Technology Goiano, Rio Verde Campus, Rio Verde, Brazil.
  • Filho VMA; Federal Institute of Education, Science and Technology Goiano, Rio Verde Campus, Rio Verde, Brazil.
  • Silva FG; Federal Institute of Education, Science and Technology Goiano, Rio Verde Campus, Rio Verde, Brazil.
  • Franco AC; Department of Botany, Institute of Biological Sciences, University of Brasília, Brasília, Brazil.
  • Hammond WM; Department of Agronomy, University of Florida, Gainesville, Florida, USA.
  • Cochard H; Université Clermont-Auvergne, INRAE, PIAF, Clermont-Ferrand, France.
  • Menezes-Silva PE; Federal Institute of Education, Science and Technology Goiano, Rio Verde Campus, Rio Verde, Brazil.
Plant Cell Environ ; 47(6): 1971-1986, 2024 Jun.
Article em En | MEDLINE | ID: mdl-38372066
ABSTRACT
Despite the abundant evidence of impairments to plant performance and survival under hotter-drought conditions, little is known about the vulnerability of reproductive organs to climate extremes. Here, by conducting a comparative analysis between flowers and leaves, we investigated how variations in key morphophysiological traits related to carbon and water economics can explain the differential vulnerabilities to heat and drought among these functionally diverse organs. Due to their lower construction costs, despite having a higher water storage capacity, flowers were more prone to turgor loss (higher turgor loss point; ΨTLP) than leaves, thus evidencing a trade-off between carbon investment and drought tolerance in reproductive organs. Importantly, the higher ΨTLP of flowers also resulted in narrow turgor safety margins (TSM). Moreover, compared to leaves, the cuticle of flowers had an overall higher thermal vulnerability, which also resulted in low leakage safety margins (LSM). As a result, the combination of low TSMs and LSMs may have negative impacts on reproduction success since they strongly influenced the time to turgor loss under simulated hotter-drought conditions. Overall, our results improve the knowledge of unexplored aspects of flower structure and function and highlight likely threats to successful plant reproduction in a warmer and drier world.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Reprodução / Folhas de Planta / Flores / Secas / Temperatura Alta Idioma: En Revista: Plant Cell Environ Assunto da revista: BOTANICA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Reprodução / Folhas de Planta / Flores / Secas / Temperatura Alta Idioma: En Revista: Plant Cell Environ Assunto da revista: BOTANICA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos