Data/hora: 19/06/2024 17:36:13

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 29/06/2023
Data da última atualização: | 29/06/2023
Autoria: | SOUSA, A. R. DE O.; RIBAS, R. F.; COELHO FILHO, M. A.; FRESCHI, L.; FERREIRA, C. F.; SOARES FILHO, W. dos S.; PÉREZ-MOLINA, J. P.; GESTEIRA, A. da S.
Afiliação: | ANDRESSA RODRIGUES DE OLIVEIRA SOUSA, UNIVERSIDADE ESTADUAL DE SANTA CRUZ; ROGÉRIO FERREIRA RIBAS, UNIVERSIDADE FEDERAL DO RECÔNNCAVO DA BAHIA; MAURICIO ANTONIO COELHO FILHO, CNPMF; LUCIANO FRESCHI, UNIVERSIDADE DE SÃO PAULO; CLAUDIA FORTES FERREIRA, CNPMF; WALTER DOS SANTOS SOARES FILHO, CNPMF; JUNIOR PASTOR PÉREZ-MOLINA, UNIVERSIDAD NACIONAL; ABELMON DA SILVA GESTEIRA, CNPMF.
Título: | Drought tolerance memory transmission by citrus buds.
Ano de publicação: | 2022
Fonte/Imprenta: | Plant Science, v.320, 111292, 2022.
Idioma: | Inglês
Conteúdo: | Plants face recurrent drought events, and previous stresses can influence their responses to subsequent stress episodes. Studies on drought stress memory are recent in citriculture, although they show promise as a tool for crop improvement. Here, we investigated whether stress memory mechanisms can be detected in citrus plants grafted with buds from plants subjected to recurrent water deficit. Three rootstock varieties, namely 'Rangpur Santa Cruz' lime, 'Sunki Maravilha' mandarin and 'Sunki Tropical' mandarin, in combination with 'Valencia' orange, were either maintained under full irrigation or subjected to one, two, or three water deficit cycles. Buds from 'Valencia' orange were grafted onto 'Swingle' citrumelo rootstocks and were evaluated. This combination displayed improved physiological and biochemical performance under water limitation, especially 'Valencia' buds grafted onto 'Sunki Maravilha', with better photosynthetic performance under water deficit. These findings indicate that genotype-dependent epigenetic memory is a key factor in restoring citrus plants' capacity to rely on previous stress experiences to restore better photosynthetic and physiological responses when undergoing new water deficit events. Therefore, epigenetic marks can be stored and transmitted to new citrus plants and are a promising alternative to enable increased water deficit tolerance when plants are then challenged by drought-prone environments.
Thesagro: | Fruta Cítrica.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (33809-1) - UPC - AP - DD - Publicação digital -  -  - DIS