Flavonoids modify root growth and modulate expression of SHORT-ROOT and HD-ZIP III10.1016/

Autor(es)

Miralha Franco, Danilo ^[1] ; Marques Silva, Eder ^[2] ; Leonardo Saldanha, Luiz ^{[3, 1]} ; Akira Adachi, Sergio ^[1] ; Rabelo Schley, Thayssa ^[1] ; Maria Rodrigues, Tatiane ^[1] ; Ligia Dokkedal, Anne ^[3] ; Silveira Nogueira, Fabio Tebaldi ^[2] ; Fernando Rolim de Almeida, Luiz ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista UNESP, Inst Biosci Botucatu, Dept Bot, BR-18618689 Botucatu, SP - Brazil

^[2] ESALQ USP, Dept Biol Sci, BR-13418260 Sao Paulo - Brazil

^[3] Univ Estadual Paulista UNESP, Fac Sci, Dept Biol Sci, BR-17033360 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Plant Physiology; v. 188, p. 89-95, SEP 1 2015.
• Citações Web of Science: 7

Resumo

Flavonoids are a class of distinct compounds produced by plant secondary metabolism that inhibit or promote plant development and have a relationship with auxin transport. We showed that, in terms of root development, Copaifera langsdorffii leaf extracts has an inhibitory effect on most flavonoid components compared with the application of exogenous flavonoids (glycosides and aglycones). These compounds alter the pattern of expression of the SHORT-ROOT and HD-ZIP III transcription factor gene family and cause morpho-physiological alterations in sorghum roots. In addition, to examine the flavonoid auxin interaction in stress, we correlated the responses with the effects of exogenous application of auxin and an auxin transport inhibitor. The results show that exogenous flavonoids inhibit primary root growth and increase the development of lateral roots. Exogenous flavonoids also change the pattern of expression of specific genes associated with root tissue differentiation. These findings indicate that flavonoid glycosides can influence the polar transport of auxin, leading to stress responses that depend on auxin. (C) 2015 Elsevier GmbH. All rights reserved. (AU)

• Processo FAPESP: 10/15585-6 - Efeito do déficit hídrico no potencial alelopático de copaíba (Copaifera langsdorffii Desf.)
• Beneficiário: Luiz Fernando Rolim de Almeida
• Modalidade de apoio: Auxílio à Pesquisa - Regular