Maytenin Plays a Special Role in the Regulation of the Endophytic Bacillus megaterium in Peritassa campestris Adventitious Roots

Autor(es)

Inacio, Marielle Cascaes ^[1] ; Paz, Tiago Antunes ^[1] ; Soares Pereira, Ana Maria ^[2] ; Furlan, Maysa ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, Inst Quim, Rua Prof Francisco Degni 55, BR-14800060 Araraquara, SP - Brazil

^[2] Univ Ribeirao Preto, UNAERP, Dept Biotecnol Vegetal, Av Costabile Romano 2201, BR-14096900 Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Chemical Ecology; v. 45, n. 9, p. 789-797, SEP 2019.
• Citações Web of Science: 0

Resumo

Peritassa campestris (Celastraceae) root bark accumulates potent antitumor quinonemethide triterpenes (QMTs). When grown in their natural habitat, plants of the family Celastraceae produce different QMTs such as celastrol (3) and pristimerin (4). However, when they are inserted in in vitro culture systems, they accumulate maytenin (1) as the main compound. Recently, Bacillus megaterium was detected as an endophytic microorganism (EM) living inside P. campestris roots cultured in vitro. We hypothesized that compound (1) controls EM growth more efficiently, and that the presence of EMs in the root culture causes compound (1) to accumulate. For the first time, this work has explored plant-microorganism interaction in a species of the family Celastraceae by co-culture with an EM. Live endophytic bacteria were used, and QMT accumulation in P. campestris adventitious roots was our main focus. The antimicrobial activity of the main QMTs against endophytic B. megaterium was also evaluated. Our results showed that compound (1) and maytenol (5) were more effective than their precursors QMTs (3) and (4) in controlling the EM. Co-culture of B. megaterium with roots significantly reduced bacterial growth whereas root development remained unaffected. Compound (1) production was 24 times higher after 48 hr in the presence of the highest B. megaterium concentration as compared to the control. Therefore, P. campestris adventitious roots affect the development of the endophyte B. megaterium through production of QMTs, which in turn can modulate production of compound (1). (AU)

• Processo FAPESP: 13/07600-3 - CIBFar - Centro de Inovação em Biodiversidade e Fármacos
• Beneficiário: Glaucius Oliva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 14/19362-2 - Aplicação da biotecnologia na avaliação da interação planta-microrganismo para a produção de metabólitos secundários em Peritassa campestris e seus endófitos
• Beneficiário: Marielle Cascaes Inácio
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 18/00143-0 - Biotransformação de triterpenos quinonametídeos a partir de fungos e sua relação estrutura-atividade frente a linhagens tumorais
• Beneficiário: Marielle Cascaes Inácio
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado