Evolutionary insights into the Andean genus Nicandra (Solanoideae, Solanaceae).

SECULÍN GLUR J.; GUTIERREZ NICOLÁS F.; LEIVA GONZÁLEZ S.; BARBOZA G.E.; CARRIZO GARCÍA C.

Phytotaxa

Magnolia Press

Lugar: Auckland; Año: 2022 vol. 572 p. 182 - 192

1179-3155

Nicandra(Solanaceae) is a small Andean genus, historically consideredmonospecific, with N.physalodes asits only species. This species is native to the South American Andesbut naturalized in many countries worldwide. Recently, N.john-tylerianaand N.yacherianawere described using morphological evidence, which are endemic toPeru.Sequencedata from four DNA markers, the plastidial intergenic spacerstrnL-trnFand ndhF-rpl32,and the nuclear ITS region and GBSSI (waxy)gene, were used to test the identity of the nominal species usinggenomic evidence, to reconstruct the genus phylogenetic historythrough Maximum Likelihood and Bayesian Inference, and to estimatedivergence times within the genus. The three Nicandraspecies formed distinct partitions and monophyletic lineages.Nicandraphysalodes,originated in the lateMiocene (ca. 8 My), was resolved as the first splitting branch,sister to thesiblings N.john-tylerianaand N.yacheriana,which were originated at the end of the Miocene (ca. 5 My). The crownages for the three species were estimated from the earlyPliocene (N.physalodes)to the mid-Pleistocene (N.john-tylerianaand N.yacheriana),which is consistent with hypotheses of Neotropical speciesdiversification. Open questions remain about the biogeography of thegenus.p { margin-bottom: 0.25cm; direction: ltr; color: #000000; line-height: 115%; orphans: 2; widows: 2 }p.western { font-family: "Arial", sans-serif; font-size: 11pt; so-language: es-AR }p.cjk { font-family: "Arial", sans-serif; font-size: 11pt; so-language: zh-CN }p.ctl { font-family: "Arial", sans-serif; font-size: 11pt; so-language: hi-IN }a:link { so-language: zxx }