Data/hora: 02/06/2024 15:57:44

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 16/11/2023
Data da última atualização: | 16/11/2023
Autoria: | SILVA, A. R. da; SILVA, D. da C.; PINTO, K. N. dos S.; SANTOS FILHO, H. P.; COELHO FILHO, M. A.; FERREIRA, C. F.; GESTEIRA, A. da S.
Afiliação: | ADIELLE RODRIGUES DA SILVA, UNIVERSIDADE ESTADUAL DE SANTA CRUZ; DELMIRA DA COSTA SILVA, UNIVERSIDADE ESTADUAL DE SANTA CRUZ; KALIANE NASCIMENTO DOS SANTOS PINTO, UNIVERSIDADE ESTADUAL DE SANTA CRUZ; HERMES PEIXOTO SANTOS FILHO; MAURICIO ANTONIO COELHO FILHO, CNPMF; CLAUDIA FORTES FERREIRA, CNPMF; ABELMON DA SILVA GESTEIRA, CNPMF.
Título: | Epigenetic Memory In Citrus Scion/Rootstock Combinations Formed With Buds Challenged By Phytophthora Citrophthora.
Ano de publicação: | 2023
Fonte/Imprenta: | In: BRAZILIAN CONGRESS OF GENETICS, 68., 2023, Ouro Preto. Paleogenomics: sequencing ancient DNA. E-book. Ribeirão Preto: Sociedade Brasileira de Genética, 2023.
Páginas: | p.380
Idioma: | Inglês
Conteúdo: | Abstract: Studies show that DNA methylation is involved in plant immunity, but little is known about how plants employ this epigenetic mechanism to adjust their responses to biotic stress, especially in plant interactions with hemibiotrophic pathogens such as Citrus Phytophthora. The objective of this work was to verify the activation of the stress memory in the responses to infection by P. citrophthora in combinations scion/rootstock of citrus - seedlings of 'Pera' sweet orange and 'Tahiti' acid lime grafted in rootstock 'Rangpur' lime and 'Tropical' sunki mandarin formed from buds challenged by this pathogen. The methodology used was the inoculation with mycelium disc of P. citrophthora on rootstock stems, and buds from the scion of these plants were grafted onto new rootstocks to verify that these new seedlings they had memorized the stress and responded better to the infection of the pathogen. Results showed that in the combinations Pera/Rangpur and Tahiti/Tropical combinations, with variety more and less sensitive to the pathogen, the seedlings formed with buds challenged by this pathogen showed smaller lesion size on the stem and more intense frequency for the complete methylation and hemimethylation profile. The opposite reaction was observed in Tahiti/Rangpur, two more sensitive varieties, and Pera/Tropical, two less sensitive varieties, which showed a higher frequency of the hemimethylation and non-methylation profile. It is concluded that the scion/rootstock interaction influenced the response to infection caused by the oomycete and DNA methylation patterns, and combinations with more and less sensitive varieties challenged with the pathogen showed an improved response to infection.
Thesagro: | Imunidade.
Thesaurus Nal: | Biotic stress; DNA methylation; Epigenetics; Immunity; Oomycetes.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (33853-1) - UPC - RA - DD - Publicação digital -  -  - DIS