An amazing new Capsicum (Solanaceae) species from the Andean-Amazonian Piedmont

Barboza, Gloria Estela; García, Carolina Carrizo; Scaldaferro, Marisel Analía; Bohs, Lynn

doi:10.3897/phytokeys.167.57751

Cited by 22 publications

(19 citation statements)

References 24 publications

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“…Two of previously circumscribed clades, Pubescens and Purple corolla, have now been merged into the enlarged Pubescens clade, named after the most known species of the group. The current results did not support the treatment of C. pubescens as an isolated lineage within Capsicum, as previously inferred in most phylogenetic reconstructions based on single DNA marker sequence data (Walsh and Hoot, 2001;Carrizo García et al, 2016;Barboza et al, 2019Barboza et al, , 2020aGuzmán Díaz et al, 2009). Instead, C. pubescens was strongly resolved as sister to the former Purple corolla clade species [i.e., C. eximium, C. eshbaughii and C. cardenasii (Carrizo García et al, 2016)].…”

Section: Discussioncontrasting

confidence: 78%

Diversification of chiles (Capsicum, Solanaceae) through time and space: New insights from genome-wide RAD-seq data

García

Barboza²,

Palombo³

et al. 2022

Front. Genet.

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Capsicum L. encompasses 43 American species, including the five domesticated worldwide consumed sweet and hot chiles. This study presents new, updated and age-calibrated phylogenetic hypothesis on the genus evolution incorporating nearly all currently accepted Capsicum species. A new model of spatial diversification of Capsicum is proposed based on analyses of several thousands of genome-wide RAD-seq derived SNPs. Maximum likelihood approaches were used to reconstruct phylogenies and to estimate dates of all major splits. Ancestral ranges were inferred and diversification events were modeled in a time frame using a Bayesian approach. Nine clades corresponding to genetically and (mostly) geographically well-defined lineages, which diversified starting around mid-upper Miocene, were recovered with strong support. The Northern and Central Andes were inferred to represent the most likely ancestral range of the genus Capsicum. A few early vicariant and dispersal events were estimated to have driven the geographic divergence of the main Capsicum clades. Each lineage was inferred to have diversified within a distinct region of South America and expanded geographically to different extent. Extant species diversification was inferred to have begun at the beginning of Pliocene and continued through the Pleistocene. The Central Andes, represented mainly by the territory of present-day Bolivia, were proposed to play a central role in the diversification of lineages comprising domesticated capsicums and their wild allies. The genome-wide approach allowed for high resolution and support of deep phylogenetic nodes providing novel insights into the affinities of major lineages and clades as well as on the geographic expansion of Capsicum. This study provides the first dated evolutionary history of the genus encompassing most of the chile species diversity.

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Section: Discussioncontrasting

confidence: 78%

Diversification of chiles (Capsicum, Solanaceae) through time and space: New insights from genome-wide RAD-seq data

García

Barboza²,

Palombo³

et al. 2022

Front. Genet.

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“…The genus Capsicum, commonly known as chili peppers, is part of the Solanaceae family and comprises more than 40 species of peppers (Barboza et al, 2020). Five of these species are domesticated (C. annuum L., C. frutescens L., C. chinense Jacq., C. baccatum L. (var.…”

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confidence: 99%

SSR-HRM molecular characterization of the Colombian cultivated germplasm of Capsicum chinense Jacq. (Solanaceae)

Lopéz-Candelo

Viáfara-Vega

Cárdenas

2022

Rev. Colomb. Cienc. Hortic

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This study was the first evaluation of the genetic diversity of cultivated populations of habanero pepper (Capsicum chinense) in Colombia using SSR-HRM. Three habanero pepper lines were characterized with eight microsatellite markers using the High-Resolution Melt (HRM) technique. Twenty-seven individuals from the HL-original line and 30 individuals each from derived lines HL-70 and HL67 were genotyped. Three microsatellites were monomorphic, and five were polymorphic; however, a high allelic diversity was detected in the homozygous state in the 87 individuals. The Ng8 marker differentiated the HL-original and HL-67 lines from the HL-70 line with HRM profiles. The analysis of molecular variance (AMOVA) revelated that 52% of the genetic variation existed within lines. The HL-67 line was more similar to the HL-original line than to the HL-70 line. HL-70 recorded the highest genetic diversity for the derived lines and, therefore, could be used in a new breeding program. In contrast, the HL-67 line, because of its high genetic homogeneity, could potentially be used to evaluate different environmental conditions to find optimal conditions that increase productivity and pungency. Finally, comparing the HRM profiles with the monomorphic markers (Ng 33, Ng 18 and Ng 10) differentiated the C. chinense and C. frutescens species, which was difficult because of high morphologic similarity between these two species and is usually evaluated at the flowering stage, while HRM profiles can be done at any plant stage.

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“…This number is present in the domesticated species C. annuum, C. chinense, C. frutescens, C. baccatum and C. pubescens. On the other hand, the 2n = 2x = 26 group is represented by wild species in South America and exhibits asymmetric karyotype formula, as found in C. campylopodium and C. mirabile (Pozzobon et al 2006, Moscone et al 2007, Barboza et al 2020b).…”

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confidence: 99%

“…Capsicum L. genus is native to Tropical and Subtropical America, comprising ~42 species represented by peppers and bell peppers, spices widely used in the worldwide cuisine (Carrizo García et al 2016, Barboza et al 2019, Barboza et al 2020a, Barboza et al 2020b). The five cultivated and domesticated species of the genus are: Capsicum annuum L., C. chinense Jacq., C. frutescens L., C. baccatum L. and C. pubescens R. & P. (Ribeiro et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Karyotype polymorphism of GC-rich constitutive heterochromatin in Capsicum L. pepper accessions

Almeida

Martins

Lopes

et al. 2022

Crop Breed. Appl. Biotechnol.

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Capsicum is represented by peppers and sweet peppers and comprises a group with remarkable genetic variability. Different cultivated Capsicum peppers of Brazil were evaluated by using CMA 3 and DAPI specific fluorochromes. There was high polymorphism of highly GC-rich CMA heterochromatic bands among the analyzed species, ranging from six (BAGC 114; C. annuum) to 26 blocks (BAGC 81; C. baccatum). Heterochromatin percentage ranged from 3.14% (BAGC 114; C. annuum) to 8.72% (BAGC 81; C. baccatum), corroborating the variation in the number of heterochromatic bands, particularly those distributed in the terminal and subterminal regions of the chromosomes. The information reported in this paper supports the cytogenetic characterization of the domesticated peppers accessions belonging to the Capsicum Germplasm Active Bank of the Federal University of Piauí (BAGC-UFPI). Moreover, the present data helped to better understand the karyotype features of peppers and provide additional information that could contribute to the improvement and maintenance of Capsicum genetic breeding programs.

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An amazing new Capsicum (Solanaceae) species from the Andean-Amazonian Piedmont

Cited by 22 publications

References 24 publications

Diversification of chiles (Capsicum, Solanaceae) through time and space: New insights from genome-wide RAD-seq data

Diversification of chiles (Capsicum, Solanaceae) through time and space: New insights from genome-wide RAD-seq data

SSR-HRM molecular characterization of the Colombian cultivated germplasm of Capsicum chinense Jacq. (Solanaceae)

Karyotype polymorphism of GC-rich constitutive heterochromatin in Capsicum L. pepper accessions

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