Carolyn Elinore Barnes Proença1,2, Amélia Carlos Tuler3, Eve J Lucas2, Thais Nogales da Costa Vasconcelos2,4, Jair Eustáquio Quintino de Faria1, Vanessa Graziele Staggemeier5, Plauto Simão de-Carvalho6, Eliana Regina Forni-Martins7, Peter Ward Inglis8, Lorena Ramos da Mata8, Itayguara Ribeiro da Costa9. 1. Departamento de Botânica, Universidade de Brasília, Brasília, DF, CEP, Brazil. 2. Royal Botanic Gardens, Kew, UK. 3. Instituto Nacional da Mata Atlântica, Av. José Ruschi 4, Santa Teresa, ES, CEP, Brazil. 4. University of Arkansas, Oakland Ave, Fayetteville, AR, USA. 5. Departamento de Ecologia, Universidade Federal do Rio Grande do Norte, R. das Biociências, Lagoa Nova, Natal, RN, CEP, Brazil. 6. Universidade Estadual de Goiás, Setor Sul, Palmeiras de Goiás , GO, CEP, Brazil. 7. Departamento de Biologia Vegetal, Universidade Estadual de Campinas, R. Monteiro Lobato 255 SP, CEP, Brazil. 8. Empresa Brasileira de Pesquisa Agropecuária, Recursos Genéticos e Biotecnologia (EMBRAPA CENARGEN) , SAIN Parque Rural, W5, Asa Norte, Brasília, DF, Brazil. 9. Departamento de Biologia, Universidade Federal do Ceará, Campus do Pici Bloco 906, Fortaleza, CE, Brazil.
Abstract
BACKGROUND AND AIMS: Psidium is the fourthth largest genus of Myrtaceae in the Neotropics. Psidium guajava is widely cultivated in the tropics for its edible fruit. It is commercially under threat due to the disease guava decline. Psidium cattleyanum is one of the 100 most invasive organisms in the world. Knowledge of the phylogenetic relationships within Psidium is poor. We aim to provide a review of the biology, morphology and ecology of Psidium, a phylogenetic tree, an infrageneric classification and a list of species. METHODS: Morphological and geographic data were obtained by studying Psidium in herbaria and in the field between 1988 and 2020. Forty-six herbaria were visited personally. A database of approx. 6000 specimens was constructed, and the literature was reviewed. Thirty species (about a third of the species in the genus) were sampled for molecular phylogenetic inference. Two chloroplast (psbA-trnH and ndhF) and two nuclear (external transcribed spacer and internal transcribed spacer) regions were targeted. Phylogenetic trees were constructed using maximum likelihood (ML; RaxML) and Bayesian inference (BI; MrBayes). KEY RESULTS: Psidium is a monophyletic genus with four major clades recognized as sections. Section Psidium (ten species), to which P. guajava belongs, is sister to the rest of the genus; it is widespread across the Neotropics. Section Obversifolia (six species; restricted to the Brazilian Atlantic Forest), which includes P. cattleyanum, is sister to the innermost clade composed of sister sections Apertiflora (31 species; widespread but most diverse in the Brazilian Atlantic Forest) + Mitranthes (26 species; widespread in dry forests and probably diverse in the Caribbean). Characters associated with diversification within Psidium are discussed. CONCLUSIONS: Research on pre-foliation, colleters, leaf anatomy, leaf physiology, staminal development, placentation and germination associated with the anatomy of the opercular plug is desirable. Studies are biased towards sections Psidium and Obversifolia, with other sections poorly known.
BACKGROUND AND AIMS: Psidium is the fourthth largest genus of Myrtaceae in the Neotropics. Psidium guajava is widely cultivated in the tropics for its edible fruit. It is commercially under threat due to the disease guava decline. Psidium cattleyanum is one of the 100 most invasive organisms in the world. Knowledge of the phylogenetic relationships within Psidium is poor. We aim to provide a review of the biology, morphology and ecology of Psidium, a phylogenetic tree, an infrageneric classification and a list of species. METHODS: Morphological and geographic data were obtained by studying Psidium in herbaria and in the field between 1988 and 2020. Forty-six herbaria were visited personally. A database of approx. 6000 specimens was constructed, and the literature was reviewed. Thirty species (about a third of the species in the genus) were sampled for molecular phylogenetic inference. Two chloroplast (psbA-trnH and ndhF) and two nuclear (external transcribed spacer and internal transcribed spacer) regions were targeted. Phylogenetic trees were constructed using maximum likelihood (ML; RaxML) and Bayesian inference (BI; MrBayes). KEY RESULTS: Psidium is a monophyletic genus with four major clades recognized as sections. Section Psidium (ten species), to which P. guajava belongs, is sister to the rest of the genus; it is widespread across the Neotropics. Section Obversifolia (six species; restricted to the Brazilian Atlantic Forest), which includes P. cattleyanum, is sister to the innermost clade composed of sister sections Apertiflora (31 species; widespread but most diverse in the Brazilian Atlantic Forest) + Mitranthes (26 species; widespread in dry forests and probably diverse in the Caribbean). Characters associated with diversification within Psidium are discussed. CONCLUSIONS: Research on pre-foliation, colleters, leaf anatomy, leaf physiology, staminal development, placentation and germination associated with the anatomy of the opercular plug is desirable. Studies are biased towards sections Psidium and Obversifolia, with other sections poorly known.
Authors: Augusto Giaretta; Thais N C Vasconcelos; Fiorella Fernanda Mazine; Jair Eustáquio Quintino Faria; Rodolfo Flores; Bruce Holst; Paulo Takeo Sano; Eve Lucas Journal: Mol Phylogenet Evol Date: 2019-07-06 Impact factor: 4.286
Authors: Thais N C Vasconcelos; Carol E B Proença; Berhaman Ahmad; Daniel S Aguilar; Reinaldo Aguilar; Bruno S Amorim; Keron Campbell; Itayguara R Costa; Plauto S De-Carvalho; Jair E Q Faria; Augusto Giaretta; Pepijn W Kooij; Duane F Lima; Fiorella F Mazine; Brigido Peguero; Gerhard Prenner; Matheus F Santos; Julia Soewarto; Astrid Wingler; Eve J Lucas Journal: Mol Phylogenet Evol Date: 2017-01-06 Impact factor: 4.286
Authors: José Murillo-A; Eduardo Ruiz-P; Leslie R Landrum; Tod F Stuessy; Michael H J Barfuss Journal: Mol Phylogenet Evol Date: 2011-12-03 Impact factor: 4.286