Data/hora: 05/06/2024 01:26:48

Biblioteca(s): | Embrapa Gado de Leite.
Data corrente: | 15/08/2021
Data da última atualização: | 07/12/2021
Autoria: | SARAIVA, N. B.; EMIDIO, N. B.; VITAL, C. E.; GUSMÃO, M. A. N.; MARCONATO, D. G.; COUTINHO, F. S.; PEREIRA, J. F.; AUAD, A. M.; FARIA-PINTO, P.; RAMOS, H. J. O.; OLIVEIRA, M. G. A.
Afiliação: | NAYARA B. SARAIVA, Universidade Federal de Viçosa; NAYARA B. EMIDIO, Universidade Federal de Juiz de Fora; CAMILO E. VITAL, Universidade Federal de Viçosa; MICHÉLIA A. N. GUSMÃO, Universidade Federal de Juiz de Fora; DANIELLE G. MARCONATO, Universidade Federal de Juiz de Fora; FLAVIANE SILVA COUTINHO, Universidade Federal de Viçosa; JORGE FERNANDO PEREIRA, CNPGL; ALEXANDER MACHADO AUAD, CNPGL; PRISCILA FARIA-PINTO, Universidade Federal de Juiz de Fora; HUMBERTO J. O. RAMOS, Universidade Federal de Viçosa; MARIA GORETI ALMEIDA OLIVEIRA, Universidade Federal de Viçosa.
Título: | Molecular profiling of the Mahanarva spectabilis salivary glands and phytohormonal response of elephant grass.
Ano de publicação: | 2021
Fonte/Imprenta: | International Journal of Tropical Insect Science, v. 41, p. 849-860, 2021.
DOI: | https://doi.org/10.1007/s42690-020-00275-9
Idioma: | Inglês
Conteúdo: | Signal perception in plants is determinant to trigger specific physiological changes that confer resistance during the early stages of the insect attack. Thus, molecular characterization of both insect effectors and plant hormonal regulators are essential in developing forage grasses resistant to infestation by spittlebug Mahanarva spectabilis. We evaluated the presence of effectors in the salivary glands of M. spectabilis that could enable the infestation of elephant grass (Pennisetum purpureum). The presence of an NTPDase-like enzyme was confirmed, and higher activity was observed in females that hydrolyzed ADP. High levels of long chain fatty acids, such as octadecanoid acid (19.5%), prostaglandin A2 (4.7%), eicosanoid acid and the phytohormone salicylic acid (~4.0 &#956;g/g) were also detected in the salivary glands. After 24 h of infestation, the phytohormone profiles were altered in leaves damaged by M. spectabilis, suggesting that the insect effectorsmodulate the plant response. Our results suggest that the plant responsemodulationmay be the result of crosstalk between the salicylic acid, jasmonic acid, abscisic acid and zeatin pathways, induced by molecules from the salivary glands. This shows that the spittlebugs can interfere with jasmonic acid and zeatin accumulation in elephant grass plants.
Palavras-Chave: | Apirase; Fitohormônio; Phytohormone; Plant resistance; Spittlebugs.
Thesagro: | Ácido Graxo; Capim Elefante; Cigarrinha das Pastagens; Hormônio Vegetal.
Thesaurus Nal: | Apyrase; Fatty acids; Metabolomics.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Gado de Leite (CNPGL)
Exemplares: | CNPGL - (25212-1) - UPC - AP - DD -  -  -  - DIS