Data/hora: 06/06/2024 13:12:52

Provedor de dados: 	74	
País: 	Brazil	
Título: 	Exploring the role of auxin in the androgynophore movement in Passiflora	
Autores: 	Scorza,Livia C.T.; Dornelas,Marcelo Carnier.	
Data: 	2015-09-01	
Ano: 	2015	
Palavras-chave: 	Passiflora; Androgynophore; IAA; NPA; Thigmotropism.	
Resumo: 	The flowers of the species belonging to the genus Passiflorashow a range of features that are thought to have arisen as adaptations to different pollinators. Some Passiflora species belonging to the subgenus Decaloba sect. Xerogona, show touch-sensitive motile androgynophores. We tested the role of auxin polar transport in the modulation of the androgynophore movement by applying auxin (IAA) or an inhibitor of auxin polar transport (NPA) in the flowers. We recorded the movement of the androgynophore during mechano-stimulation and analyzed the duration, speed, and the angle formed by the androgynophore before and after the movement, and found that both IAA and NPA increase the amplitude of the movement in P. sanguinolenta. We hypothesize that auxin might have a role in modulating the fitness of these Decaloba species to different pollination syndromes and demonstrate that an interspecific hybrid between insect- and hummingbird-pollinated Xerogona species present a heterosis effect on the speed of the androgynophore movement.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000300301	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S1415-475738320140377	
Formato: 	text/html	
Fonte: 	Genetics and Molecular Biology  v.38 n.3 2015	
Fonte: 	info:eu-repo/semantics/openAccess