Data/hora: 01/06/2024 07:52:13

Provedor de dados: 	39	
País: 	Brazil	
Título: 	Genetic evidence of multiple reproductive strategies in a microendemic and threatened cactus (Cactaceae: Discocactus Pfeiff) in Bahia, Brazil	
Autores: 	Jesus,Izabela Santos Dias de; Conceição,Leila Patricio; Schnadelbach,Alessandra Selbach; Assis,José Geraldo de Aquino; Carvalho,Maria Luiza Silveira de.	
Data: 	2019-09-01	
Ano: 	2019	
Palavras-chave: 	Discocactus; ISSR; Genetic variabilty; Microendemism; Reproductive strategies.	
Resumo: 	ABSTRACT Discocactus zehntneri subsp. petr-halfari, an endangered taxon, is represented by a single population in an anthropized area of Bahia, Brazil, where it is suffering due to extreme extractivism. Thus, information about this cactus, such as its reproductive patterns, is urgently needed to support conservation strategies. A population genetics approach was used to determine if this subspecies has a preferential pattern of reproduction. We sampled 18 individuals, both with and without connection to parental plants, from five clumps and assessed their diversity and genetic structure using five ISSR markers. The results revealed two clumps that are genetically supported by the presence of genetically equal individuals. The other three groups presented individuals that are genetically different and similar to individuals in other clumps. These findings suggest that this subspecies has sexual and clonal reproduction and that its environmental distribution might be shaped by events of dispersion. In addition, a possible hybrid origin may explain its rates of genetic diversity. Despite all these factors, this taxon is in danger and so the development of conservation strategies to preserve its population are urgently needed, including in situ and ex situ actions such as the micropropagation in vitro, living collections and cryopreservation.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000300437	
Editor: 	Sociedade Botânica do Brasil	
Relação: 	10.1590/0102-33062018abb0393	
Formato: 	text/html	
Fonte: 	Acta Botanica Brasilica  v.33 n.3 2019	
Fonte: 	info:eu-repo/semantics/openAccess