Flavonoids modify root growth and modulate expression of SHORT-ROOT and HD-ZIP III
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Data
2015-09-01
Autores
Franco, Danilo Miralha [UNESP]
Silva, Eder Marques
Saldanha, Luiz Leonardo [UNESP]
Adachi, Sérgio Akira [UNESP]
Schley, Thayssa Rabelo [UNESP]
Rodrigues, Tatiane Maria [UNESP]
Dokkedal, Anne Ligia [UNESP]
Nogueira, Fabio Tebaldi Silveira
Rolim de Almeida, Luiz Fernando [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B. V.
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.
Descrição
Palavras-chave
Allelopathic stress, Differential gene expression, Kaempferol-3-o-alpha-rhamnoside, Quercetin-3-o-alpha-rhamnoside, Root development
Como citar
Journal Of Plant Physiology, v. 188, p. 89-95, 2015.