Data/hora: 06/06/2024 04:30:01

Provedor de dados: 	39	
País: 	Brazil	
Título: 	Flavonoid profiling and nodulation of some legumes in response to the allelopathic stress of Sonchus oleraceus L.	
Autores: 	Gomaa,Nasr Hassan; Hassan,Mahmoud Omar; Fahmy,Gamal Mohammad; González,Luís; Hammouda,Ola; Atteya,Atteya Mostafa.	
Data: 	2015-12-01	
Ano: 	2015	
Palavras-chave: 	Allelopathy; Flavonoids; Legumes; Nodulation; Sonchus oleraceus.	
Resumo: 	Annual sowthistle (Sonchus oleraceus) has been reported to produce allelopathic effects. Two greenhouse experiments were conducted to estimate the allelopathic potential of both plant residue and root exudates of S. oleraceus on flavonoid composition and nodulation in a leguminous crop, Trifolium alexandrinum, and in two leguminous weeds, Melilotus indicus and T. resupinatum. The results of high performance liquid chromatography-mass spectrometry (HPLC-MS/MS) showed that all three legumes contained six flavonoid aglycones: apigenin, daidzein, kaempferol, luteolin, myricetin and quercetin; and seven flavonoid glycosides: daidzin, genistin, hesperidin, hyperoside, kaempferol-7-O-glucoside, naringin and rutin. In general, both plant residue and root exudates had inhibitory effects on the flavonoid composition and nodulation of the target species. However, residue of S. oleraceus caused a significant increase in both individual and total detected flavonoids in T. alexandrinum. The results suggest that the phytotoxins released from S. oleraceus may restrain the biosynthesis of flavonoids in the target species, whereas the accumulated flavonoids in T. alexandrinum are allelopathic-induced metabolites and suggest a resistance mode in this crop.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000400553	
Editor: 	Sociedade Botânica do Brasil	
Relação: 	10.1590/0102-33062015abb0153	
Formato: 	text/html	
Fonte: 	Acta Botanica Brasilica  v.29 n.4 2015	
Fonte: 	info:eu-repo/semantics/openAccess