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Transferability of Psidium microsatellite loci in Myrteae (Myrtaceae): a phylogenetic signal

Bernardes, Carolinade Oliveira, Tuler, AméliaCarlos, Ferreira, Adésio, Carvalho, MarinaSantos, Nogueira, AngélicaMaria, Ferreira, MarciaFlores da Silva
Euphytica 2018 v.214 no.7 pp. 105
Acca, Campomanesia, Eucalyptus, Eugenia, Myrciaria, Pimenta, Plinia, Psidium guajava, Syzygium, biodiversity, genetic markers, genetic variation, microsatellite repeats, phylogeny, plant breeding
Myrteae is the most diverse tribe, in number of species and genera, of the family Myrtaceae, representing half of the family’s biodiversity. Analysis of universal cross-transferable genetic markers across genera/species is essential and may significantly contribute towards the better understanding of species systematics and evolution. In the present study, a total of 133 sequence-tagged microsatellite markers from Psidium guajava L. were evaluated for transferability to forty-four species of the tribe Myrteae, which represent nine different genera of the family Myrtaceae (Myrciaria, Plinia, Pimenta, Acca, Campomanesia, Psidium, Eugenia, Syzygium, and Eucalyptus). Cross-transferable simple sequence repeat (SSR) markers were employed to evaluate the phylogenetic relationships between them. The results indicated a high level of congruence with earlier reports regarding genetic divergence and taxa clustering. An analysis to optimize the number of SSR markers was also performed, revealing that even a small amount is capable of determining the systematic positions of different genera/species of the Myrteae tribe.