1
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Backes A, Turchetto C, Mäder G, Segatto ALA, Bonatto SL, Freitas LB. Shades of white: The Petunia long corolla tube clade evolutionary history. Genet Mol Biol 2024; 47:e20230279. [PMID: 38385448 PMCID: PMC10882218 DOI: 10.1590/1415-4757-gmb-2023-0279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/21/2023] [Indexed: 02/23/2024] Open
Abstract
Delimiting species is challenging in recently diverged species, and adaptive radiation is fundamental to understanding the evolutionary processes because it requires multiple ecological opportunities associated with adaptation to biotic and abiotic environments. The young Petunia genus (Solanaceae) is an excellent opportunity to study speciation because of its association with pollinators and unique microenvironments. This study evaluated the phylogenetic relationships among a Petunia clade species with different floral syndromes that inhabit several environments. We based our work on multiple individuals per lineage and employed nuclear and plastid phylogenetic markers and nuclear microsatellites. The phylogenetic tree revealed two main groups regarding the elevation of the distribution range, whereas microsatellites showed high polymorphism-sharing splitting lineages into three clusters. Isolation by distance, migration followed by new environment colonization, and shifts in floral syndrome were the motors for lineage differentiation, including infraspecific structuring, which suggests the need for taxonomic revision in the genus.
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Affiliation(s)
- Alice Backes
- Universidade Federal do Rio Grande do Sul, Departamento de Genética, Porto Alegre, RS, Brazil
| | - Caroline Turchetto
- Universidade Federal do Rio Grande do Sul, Departamento de Botânica, Porto Alegre, RS, Brazil
| | - Geraldo Mäder
- Universidade Federal do Rio Grande do Sul, Departamento de Genética, Porto Alegre, RS, Brazil
| | - Ana Lúcia A Segatto
- Universidade Federal de Santa Maria, Departamento de Bioquímica e Biologia Molecular, Santa Maria, RS, Brazil
| | - Sandro L Bonatto
- Pontifícia Universidade Católica do Rio Grande do Sul, A Escola de Ciências da Saúde e da Vida, Porto Alegre, RS, Brazil
| | - Loreta B Freitas
- Universidade Federal do Rio Grande do Sul, Departamento de Genética, Porto Alegre, RS, Brazil
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2
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Gonçalves ZS, Jesus ON, Lima LKS, Corrêa RX. Responses of Passiflora spp. to cowpea aphid-borne mosaic virus reveal infection in asymptomatic plants and new species with probable immunity. Arch Virol 2021; 166:2419-2434. [PMID: 34132915 DOI: 10.1007/s00705-021-05131-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 04/24/2021] [Indexed: 11/27/2022]
Abstract
Passion fruit woodiness disease (PWD), caused by cowpea aphid-borne mosaic virus (CABMV), produces socioeconomic problems in Brazil. The objectives of this study were to i) evaluate the temporal progression of PWD, ii) identify Passiflora genotypes with resistance to CABMV, and iii) detect virus infection in asymptomatic plants by reverse transcription quantitative polymerase chain reaction (RT-qPCR) in cases where standard RT-PCR detection failed. The experiment was conducted in a greenhouse using 128 genotypes belonging to 12 species and three hybrids (inter- and intraspecific) of Passiflora, evaluated at five time points after inoculation. Progression rates and disease severity were lower in P. cincinnata, P. gibertii, P. miersii, and P. mucronata than in P. edulis, P. alata, Passiflora sp., and hybrids. Of the genotypes tested, 20.31% were resistant, especially the accessions of P. suberosa, P. malacophylla, P. setacea, P. pohlii, and P. bahiensis, which remained asymptomatic throughout the experiment. The absence of symptoms does not imply immunity of plants to the virus, since RT-qPCR analysis confirmed infection by the virus in asymptomatic plants of P. cincinnata, P. gibertii, P. miersii, P. mucronata, P. setacea, P. malacophylla, and P. suberosa. Even after four inoculations, the virus was not detected by RT-qPCR in the upper leaves in plants of the species P. pohlii and P. bahiensis, indicating that these species are probably immune to CABMV.
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Affiliation(s)
- Zanon Santana Gonçalves
- Departamento de Ciências Biológicas, Centro de Biotecnologia e Genética, Universidade Estadual de Santa Cruz, UESC, Rodovia Jorge Amado, Km 16, Salobrinho, Ilhéus, BA, 45662-900, Brazil
| | - Onildo Nunes Jesus
- Embrapa Mandioca e Fruticultura, Rua Embrapa, s/n, Chapadinha, Caixa Postal 007, Cruz das Almas, BA, 44380-000, Brazil.
| | - Lucas Kennedy Silva Lima
- Embrapa Mandioca e Fruticultura, Rua Embrapa, s/n, Chapadinha, Caixa Postal 007, Cruz das Almas, BA, 44380-000, Brazil
| | - Ronan Xavier Corrêa
- Departamento de Ciências Biológicas, Centro de Biotecnologia e Genética, Universidade Estadual de Santa Cruz, UESC, Rodovia Jorge Amado, Km 16, Salobrinho, Ilhéus, BA, 45662-900, Brazil
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Genetic Diversity of Purple Passion Fruit, Passiflora edulis f. edulis, Based on Single-Nucleotide Polymorphism Markers Discovered through Genotyping by Sequencing. DIVERSITY 2021. [DOI: 10.3390/d13040144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Orphan crops, which include many of the tropical fruit species used in the juice industry, lack genomic resources and breeding efforts. Typical of this dilemma is the lack of commercial cultivars of purple passion fruit, Passiflora edulis f. edulis, and of information on the genetic resources of its substantial semiwild gene pool. In this study, we develop single-nucleotide polymorphism (SNP) markers for the species and show that the genetic diversity of this fruit crop has been reduced because of selection for cultivated genotypes compared to the semiwild landraces in its center of diversity. A specific objective of the present study was to determine the genetic diversity of cultivars, genebank accession, and landraces through genotyping by sequencing (GBS) and to conduct molecular evaluation of a broad collection for the species P. edulis from a source country, Colombia. We included control genotypes of yellow passion fruit, P. edulis f. flavicarpa. The goal was to evaluate differences between fruit types and compare landraces and genebank accessions from in situ accessions collected from farmers. In total, 3820 SNPs were identified as informative for this diversity study. However, the majority distinguished yellow and purple passion fruit, with 966 SNPs useful in purple passion fruits alone. In the population structure analysis, purple passion fruits were very distinct from the yellow ones. The results for purple passion fruits alone showed reduced diversity for the commercial cultivars while highlighting the higher diversity found among landraces from wild or semi-wild conditions. These landraces had higher heterozygosity, polymorphism, and overall genetic diversity. The implications for genetics and breeding as well as evolution and ecology of purple passion fruits based on the extant landrace diversity are discussed with consideration of manual or pollinator-assisted hybridization of this species.
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Tungmunnithum D, Renouard S, Drouet S, Blondeau JP, Hano C. A Critical Cross-Species Comparison of Pollen from Nelumbo nucifera Gaertn. vs. Nymphaea lotus L. for Authentication of Thai Medicinal Herbal Tea. PLANTS (BASEL, SWITZERLAND) 2020; 9:plants9070921. [PMID: 32708113 PMCID: PMC7412456 DOI: 10.3390/plants9070921] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/10/2020] [Accepted: 07/16/2020] [Indexed: 12/28/2022]
Abstract
"Bau Luang" or Nelumbo nucifera Gaertn. is an aquatic medicinal herb that has been used as a component of traditional medicines, medicinal products, and herbal tea for good health, particularly in Asia. The stamen of N. nucifera is an important part of this medicinal plant that is used in the form of dried and/or powdered stamens for herbal tea as well as the main ingredient of some traditional remedies. However, there is another aquatic herb called "Bau Sai" or Nymphaea lotus L. that is distributed in similar locations. Living plants of these two aquatic species may be classified according to their morphology, but the dried and powdered stamens of these two medicinal species are difficult to distinguish. The major reason of adulteration is the higher price of Bau Luang stamen. As a result, various methods of authentication, such as pollen micromorphology evaluation using scanning electron microscopy (SEM) analysis, bioinformatics analysis of two nuclear and plastic DNA markers, phytochemical stamen profiling, and Fourier transform infrared (FTIR) analysis of stamen plant material authentication from Bau Luang and Bau Sai, have been used in this present research in order to avoid some adulteration and/or misuse between the dried stamens of Bau Luang and Bau Sai. These results showed that the micro-morphology of pollen (size of pollen grain, number of apertures, and surface ornamentation) from the SEM analysis, some phytochemical compounds and the FTIR sporopollenin-to-protein ratio signal analysis are potential tools for authentication and identification of these two medicinal plants from their dried-stamen materials. This model of investigation may also be used to distinguish dried plant material from other problematic plant groups.
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Affiliation(s)
- Duangjai Tungmunnithum
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, INRAE USC1328, University of Orleans, 45067 Orléans CEDEX 2, France;
- Bioactifs et Cosmetiques, CNRS GDR 3711, 45067 Orléans CEDEX 2, France
- Correspondence: (D.T.); (C.H.); Tel.: +66-264-486-96 (D.T.); +33-237-309-753 (C.H.)
| | - Sullivan Renouard
- Institut de Chimie et de Biologie des Membranes et des Nano-objets, CNRS UMR 5248, Bordeaux University, 33600 Pessac, France;
| | - Samantha Drouet
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, INRAE USC1328, University of Orleans, 45067 Orléans CEDEX 2, France;
- Bioactifs et Cosmetiques, CNRS GDR 3711, 45067 Orléans CEDEX 2, France
| | - Jean-Philippe Blondeau
- Conditions Extrêmes et Matériaux: Haute Température et Irradiation (CEMHTI) CNRS UPR3079, 1D Avenue de la Recherche Scientifique, 45071 Orléans, France;
| | - Christophe Hano
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, INRAE USC1328, University of Orleans, 45067 Orléans CEDEX 2, France;
- Bioactifs et Cosmetiques, CNRS GDR 3711, 45067 Orléans CEDEX 2, France
- Correspondence: (D.T.); (C.H.); Tel.: +66-264-486-96 (D.T.); +33-237-309-753 (C.H.)
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Mäder G, Freitas LB. Biogeographical, ecological, and phylogenetic analyses clarifying the evolutionary history of Calibrachoa in South American grasslands. Mol Phylogenet Evol 2019; 141:106614. [PMID: 31518694 DOI: 10.1016/j.ympev.2019.106614] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 09/09/2019] [Accepted: 09/09/2019] [Indexed: 11/29/2022]
Abstract
Calibrachoa is a charismatic South American genus of Solanaceae, closely related to Petunia, which encompasses approximately 30 species. Studies that were based solely on plastid molecular markers indicated the monophyly of the genus and distributed its species in two subgenera; to date no phylogeny has included a broad morphological variants and nuclear markers. Here, we present a phylogenetic analysis based on eight plastid and eight nuclear markers that cover the most extensive geographic distribution for the genus. We use this phylogeny to infer the biogeographic history of the genus and to understand the primary drivers for species diversification. Our results yield a fully supported tree where monophyly is confirmed to genus and subgenera. The species of Stimomphis subgenus that were previously considered uncertain, here emerge in four highly supported clades. The hypothesis of niche conservatism is confirmed, and adaptive radiation explains the species diversification. The lowlands are the most likely ancestral area of the genus, subgenera, and two clades of Stimomphis subgenus. Our results constitute an excellent starting point for further evolutionary and taxonomic studies and explain several uncertain evolutionary relationships in the group and the evolution of their distribution.
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Affiliation(s)
- Geraldo Mäder
- Laboratory of Molecular Evolution, Department of Genetics, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
| | - Loreta B Freitas
- Laboratory of Molecular Evolution, Department of Genetics, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil.
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6
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SOARES TALIANEL, JESUS ONILDON, SOUZA EVERTONH, ROSSI MÔNICAL, OLIVEIRA EDERJ. Comparative pollen morphological analysis in the subgenera Passiflora and Decaloba. ACTA ACUST UNITED AC 2018; 90:2381-2396. [DOI: 10.1590/0001-3765201720170248] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 06/08/2017] [Indexed: 11/21/2022]
Affiliation(s)
| | | | - EVERTON H. SOUZA
- Embrapa Mandioca e Fruticultura, Brazil; Universidade Federal do Recôncavo da Bahia, Brazil
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Barros MJF, Diniz-Filho JAF, Freitas LB. Ecological drivers of plant genetic diversity at the southern edge of geographical distributions: Forestal vines in a temperate region. Genet Mol Biol 2018; 41:318-326. [PMID: 29668009 PMCID: PMC5913715 DOI: 10.1590/1678-4685-gmb-2017-0031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 06/12/2017] [Indexed: 11/21/2022] Open
Abstract
The Tropical Niche Conservatism hypothesis is one of the most relevant theories to explain why tropical diversity is high, although the mechanisms underlying this hypothesis require further clarification. A possible research avenue to address the underlying mechanisms includes determining population-level processes associated with such a hypothesis, in particular by trying to identify how adaptation may occur in extreme niche conditions at the edges of species ranges. However, the determinants of molecular diversity at the edges of geographical distributions of tropical taxa are still poorly known. Here we assessed which environmental variables determine diversity in nuclear and plastid genetic markers for populations of four Passiflora species in the southern limit of their geographical distributions. Climatic factors can drive genetic diversity, and their importance varies according to the marker. The primary predictors are variables representing higher temperatures during cold periods of the year and higher precipitation during dry periods. We concluded that, although these species are present in colder areas at the edge of their range, Tropical Niche Conservatism acts as a restraining force on genetic diversity in southern populations of Passiflora.
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Affiliation(s)
- Michel J F Barros
- Department of Genetics, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | - Loreta B Freitas
- Department of Genetics, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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8
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Giudicelli GC, Mäder G, Silva-Arias GA, Zamberlan PM, Bonatto SL, Freitas LB. Secondary structure of nrDNA Internal Transcribed Spacers as a useful tool to align highly divergent species in phylogenetic studies. Genet Mol Biol 2017; 40:191-199. [PMID: 28199443 PMCID: PMC5452138 DOI: 10.1590/1678-4685-gmb-2016-0042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 08/23/2016] [Indexed: 12/18/2022] Open
Abstract
Recently, it has been suggested that internal transcribed spacer (ITS) sequences are under selective constraints to preserve their secondary structure. Here, we investigate the patterns of the ITS nucleotide and secondary structure conservation across the Passiflora L. genus to evaluate the potential use of secondary structure data as a helpful tool for the alignment in taxonomically complex genera. Considering the frequent use of ITS, this study also presents a perspective on future analyses in other plant groups. The ITS1 and ITS2 sequences presented significant differences for mean values of the lowest energy state (LES) and for number of hairpins in different Passiflora subgenera. Statistical analyses for the subgenera separately support significant differences between the LES values and the total number of secondary structures for ITS. In order to evaluate whether the LES values of ITS secondary structures were related to selective constraints, we compared these results among 120 ITS sequences from Passiflora species and 120 randomly generated sequences. These analyses indicated that Passiflora ITS sequences present characteristics of a region under selective constraint to maintain the secondary structure showing to be a promising tool to improve the alignments and identify sites with non-neutral substitutions or those correlated evolutionary steps.
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Affiliation(s)
- Giovanna C Giudicelli
- Laboratory of Molecular Evolution, Department of Genetics, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Geraldo Mäder
- Laboratory of Molecular Evolution, Department of Genetics, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Gustavo A Silva-Arias
- Laboratory of Molecular Evolution, Department of Genetics, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Priscilla M Zamberlan
- Laboratory of Molecular Evolution, Department of Genetics, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Sandro L Bonatto
- Laboratory of Genomic and Molecular Biology, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Loreta B Freitas
- Laboratory of Molecular Evolution, Department of Genetics, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
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9
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Cazé ALR, Mäder G, Nunes TS, Queiroz LP, de Oliveira G, Diniz-Filho JAF, Bonatto SL, Freitas LB. Could refuge theory and rivers acting as barriers explain the genetic variability distribution in the Atlantic Forest? Mol Phylogenet Evol 2016; 101:242-251. [DOI: 10.1016/j.ympev.2016.05.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 05/09/2016] [Accepted: 05/10/2016] [Indexed: 11/28/2022]
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10
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Mäder G, Castro L, Bonatto SL, Freitas LBD. Multiple introductions and gene flow in subtropical South American populations of the fireweed, Senecio madagascariensis(Asteraceae). Genet Mol Biol 2016; 39:135-44. [PMID: 27007907 PMCID: PMC4807391 DOI: 10.1590/1678-4685-gmb-2015-0167] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 10/15/2015] [Indexed: 11/21/2022] Open
Abstract
Non-indigenous plants exhibit different attributes that make them aggressive competitors with indigenous plants and serious threats to biodiversity.Senecio madagascariensis (fireweed, Asteraceae), a native from southern Africa, is a strong competitor in agricultural activities and has toxic alkaloids that may result in high cattle mortality. In Brazil, this weed was collected for the first time in 1995 and has since spread quickly throughout the Pampas region. To better understand the invasion of the fireweed in South America, we used a genetic characterization with internal transcribed spacer (ITS) and microsatellite markers. Based on the ITS data, the southern Brazil populations of S. madagascariensis shared genetic homology with samples taken from the Hawaiian Islands and South Africa. Microsatellite analysis showed the genetic diversity split in two clusters, perhaps intimating the independent introduction of each species into South America. Although fireweed was introduced recently in southern Brazil, the considerable levels of genetic diversity, gene flow, and inbreeding may indicate success in the species establishment in this environment.
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Affiliation(s)
- Geraldo Mäder
- Laboratório de Evolução Molecular, Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Luana Castro
- Laboratório de Evolução Molecular, Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Sandro Luis Bonatto
- Laboratório de Genômica e Biologia Molecular, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Loreta Brandão de Freitas
- Laboratório de Evolução Molecular, Departamento de Genética, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Su Z, Richardson BA, Zhuo L, Jiang X. Divergent Population Genetic Structure of the Endangered Helianthemum (Cistaceae) and Its Implication to Conservation in Northwestern China. FRONTIERS IN PLANT SCIENCE 2016; 7:2010. [PMID: 28105040 PMCID: PMC5214710 DOI: 10.3389/fpls.2016.02010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 12/19/2016] [Indexed: 05/13/2023]
Abstract
Population genetic studies provide a foundation for conservation planning, especially for endangered species. Three chloroplast SSRs (mtrnSf-trnGr, mtrnL2-trnF, and mtrnL5-trnL3) and the internal transcribed spacer were used to examine the population structure of Helianthemum in northwestern China. A total of 15 populations of the genus were collected. Nine chloroplast haplotypes and two nuclear genotypes were detected. Both the nuclear and chloroplast data showed two lineages in Helianthemum songaricum, respectively, distributed in Yili Valley and western Ordos Plateau. A total of 66.81% (p < 0.001) of the genetic variation was supported by this lineage split. A Mantel test showed a significant correlation between genetic distance and geographical distance (r = 0.937, p < 0.001). Based on genetic analyses, cpSSRs data support strong genetic divergence between regions. We speculate that the climate change during the late Tertiary and early Quaternary isolated H. songaricum into their current distribution, resulting in interruption of gene flow, leading to isolation and genetic divergence between the two regions. Meanwhile, possible selfing would increase genetic drift in small fragmented populations, that might account for the observed genetic divergence in both regions. Given the loss of genetic diversity and genetic divergence in small populations of Helianthemum in northwestern China immediate conservation management steps should be taken on the species.
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Affiliation(s)
- Zhihao Su
- Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of SciencesUrumqi, China
- *Correspondence: Zhihao Su
| | | | - Li Zhuo
- Library, Xinjiang Normal UniversityUrumqi, China
| | - Xiaolong Jiang
- Shanghai Chenshan Plant Science Research Center, Shanghai Chenshan Botanical Garden, Chinese Academy of SciencesShanghai, China
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12
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Conservation genetics and geographic patterns of genetic variation of endangered shrub Ammopiptanthus (Fabaceae) in northwestern China. CONSERV GENET 2015. [DOI: 10.1007/s10592-015-0798-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Efficiency of ITS sequences for DNA barcoding in Passiflora (Passifloraceae). Int J Mol Sci 2015; 16:7289-303. [PMID: 25837628 PMCID: PMC4425017 DOI: 10.3390/ijms16047289] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 03/21/2015] [Accepted: 03/25/2015] [Indexed: 01/20/2023] Open
Abstract
DNA barcoding is a technique for discriminating and identifying species using short, variable, and standardized DNA regions. Here, we tested for the first time the performance of plastid and nuclear regions as DNA barcodes in Passiflora. This genus is a largely variable, with more than 900 species of high ecological, commercial, and ornamental importance. We analyzed 1034 accessions of 222 species representing the four subgenera of Passiflora and evaluated the effectiveness of five plastid regions and three nuclear datasets currently employed as DNA barcodes in plants using barcoding gap, applied similarity-, and tree-based methods. The plastid regions were able to identify less than 45% of species, whereas the nuclear datasets were efficient for more than 50% using “best match” and “best close match” methods of TaxonDNA software. All subgenera presented higher interspecific pairwise distances and did not fully overlap with the intraspecific distance, and similarity-based methods showed better results than tree-based methods. The nuclear ribosomal internal transcribed spacer 1 (ITS1) region presented a higher discrimination power than the other datasets and also showed other desirable characteristics as a DNA barcode for this genus. Therefore, we suggest that this region should be used as a starting point to identify Passiflora species.
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Zhihao S, Mingli Z. A range wide geographic pattern of genetic diversity and population structure of Hexinia polydichotoma (Asteraceae) in Tarim Basin and adjacent areas. BIOCHEM SYST ECOL 2014. [DOI: 10.1016/j.bse.2014.04.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Reck-Kortmann M, Silva-Arias GA, Segatto ALA, Mäder G, Bonatto SL, de Freitas LB. Multilocus phylogeny reconstruction: new insights into the evolutionary history of the genus Petunia. Mol Phylogenet Evol 2014; 81:19-28. [PMID: 25196589 DOI: 10.1016/j.ympev.2014.08.022] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 08/18/2014] [Accepted: 08/22/2014] [Indexed: 12/25/2022]
Abstract
The phylogeny of Petunia species has been difficult to resolve, primarily due to the recent diversification of the genus. Several studies have included molecular data in phylogenetic reconstructions of this genus, but all of them have failed to include all taxa and/or analyzed few genetic markers. In the present study, we employed the most inclusive genetic and taxonomic datasets for the genus, aiming to reconstruct the evolutionary history of Petunia based on molecular phylogeny, biogeographic distribution, and character evolution. We included all 20 Petunia morphological species or subspecies in these analyses. Based on nine nuclear and five plastid DNA markers, our phylogenetic analysis reinforces the monophyly of the genus Petunia and supports the hypothesis that the basal divergence is more related to the differentiation of corolla tube length, whereas the geographic distribution of species is more related to divergences within these main clades. Ancestral area reconstructions suggest the Pampas region as the area of origin and earliest divergence in Petunia. The state reconstructions suggest that the ancestor of Petunia might have had a short corolla tube and a bee pollination floral syndrome.
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Affiliation(s)
- Maikel Reck-Kortmann
- Laboratory of Molecular Evolution, Department of Genetics, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
| | - Gustavo Adolfo Silva-Arias
- Laboratory of Molecular Evolution, Department of Genetics, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
| | - Ana Lúcia Anversa Segatto
- Laboratory of Molecular Evolution, Department of Genetics, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
| | - Geraldo Mäder
- Laboratory of Molecular Evolution, Department of Genetics, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil
| | - Sandro Luis Bonatto
- Laboratory of Genomic and Molecular Biology, Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS 90610-001, Brazil
| | - Loreta Brandão de Freitas
- Laboratory of Molecular Evolution, Department of Genetics, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS 91501-970, Brazil.
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Cerqueira-Silva CBM, Jesus ON, Santos ESL, Corrêa RX, Souza AP. Genetic breeding and diversity of the genus Passiflora: progress and perspectives in molecular and genetic studies. Int J Mol Sci 2014; 15:14122-52. [PMID: 25196515 PMCID: PMC4159842 DOI: 10.3390/ijms150814122] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Revised: 06/12/2014] [Accepted: 06/30/2014] [Indexed: 11/17/2022] Open
Abstract
Despite the ecological and economic importance of passion fruit (Passiflora spp.), molecular markers have only recently been utilized in genetic studies of this genus. In addition, both basic genetic researches related to population studies and pre-breeding programs of passion fruit remain scarce for most Passiflora species. Considering the number of Passiflora species and the increasing use of these species as a resource for ornamental, medicinal, and food purposes, the aims of this review are the following: (i) to present the current condition of the passion fruit crop; (ii) to quantify the applications and effects of using molecular markers in studies of Passiflora; (iii) to present the contributions of genetic engineering for passion fruit culture; and (iv) to discuss the progress and perspectives of this research. Thus, the present review aims to summarize and discuss the relationship between historical and current progress on the culture, breeding, and molecular genetics of passion fruit.
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Affiliation(s)
- Carlos Bernard M Cerqueira-Silva
- Laboratory of Applied Molecular Genetics, Department of Exact and Natural Sciences, State University of Southwest Bahia, Itapetinga 45700-000, Brazil.
| | - Onildo N Jesus
- Brazilian Agricultural Research Corporation, Cassava & Fruits, Cruz das Almas 44380-000, Brazil.
| | - Elisa S L Santos
- Laboratory of Applied Molecular Genetics, Department of Exact and Natural Sciences, State University of Southwest Bahia, Itapetinga 45700-000, Brazil.
| | - Ronan X Corrêa
- Biotechnology and Genetic Center, Biological Sciences Department, State University of Santa Cruz, Ilhéus 45662-900, Brazil.
| | - Anete P Souza
- Molecular Biology and Genetic Engineering Center, University of Campinas, CP 6010 Campinas, Campinas 13083-875, Brazil.
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Genetic diversity in Passiflora species assessed by morphological and its sequence analysis. ScientificWorldJournal 2014; 2014:598313. [PMID: 25050402 PMCID: PMC4090459 DOI: 10.1155/2014/598313] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 05/13/2014] [Accepted: 05/15/2014] [Indexed: 11/28/2022] Open
Abstract
This study used morphological characterization and phylogenetic analysis of the internal transcribed spacer (ITS) region of nuclear ribosomal DNA to investigate the phylogeny of Passiflora species. The samples were collected from various regions of East Malaysia, and discriminant function analysis based on linear combinations of morphological variables was used to classify the Passiflora species. The biplots generated five distinct groups discriminated by morphological variables. The group consisted of cultivars of P. edulis with high levels of genetic similarity; in contrast, P. foetida was highly divergent from other species in the morphological biplots. The final dataset of aligned sequences from nine studied Passiflora accessions and 30 other individuals obtained from GenBank database (NCBI) yielded one most parsimonious tree with two strongly supported clades. Maximum parsimony (MP) tree showed the phylogenetic relationships within this subgenus Passiflora support the classification at the series level. The constructed phylogenic tree also confirmed the divergence of P. foetida from all other species and the closeness of wild and cultivated species. The phylogenetic relationships were consistent with results of morphological assessments. The results of this study indicate that ITS region analysis represents a useful tool for evaluating genetic diversity in Passiflora at the species level.
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Cutri L, Nave N, Ami MB, Chayut N, Samach A, Dornelas MC. Evolutionary, genetic, environmental and hormonal-induced plasticity in the fate of organs arising from axillary meristems in Passiflora spp. Mech Dev 2012; 130:61-9. [PMID: 22659398 DOI: 10.1016/j.mod.2012.05.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 05/21/2012] [Accepted: 05/22/2012] [Indexed: 11/30/2022]
Abstract
Tendrils can be found in different plant species. In legumes such as pea, tendrils are modified leaves produced by the vegetative meristem but in the grape vine, a same meristem is used to either form a tendril or an inflorescence. Passiflora species originated in ecosystems in which there is dense vegetation and competition for light. Thus climbing on other plants in order to reach regions with higher light using tendrils is an adaptive advantage. In Passiflora species, after a juvenile phase, every leaf has a subtending vegetative meristem, and a separate meristem that forms both flowers and a tendril. Thus, flowers are formed once a tendril is formed yet whether or not this flower will reach bloom depends on the environment. For example, in Passiflora edulis flowers do not develop under shaded conditions, so that tendrils are needed to bring the plant to positions were flowers can develop. This separate meristem generally forms a single tendril in different Passiflora species yet the number and position of flowers formed from the same meristem diverges among species. Here we display the variation among species as well as variation within a single species, P. edulis. We also show that the number of flowers within a specific genotype can be modulated by applying Cytokinins. Finally, this separate meristem is capable of transforming into a leaf-producing meristem under specific environmental conditions. Thus, behind what appears to be a species-specific rigid program regarding the fate of this meristem, our study helps to reveal a plasticity normally restrained by genetic, hormonal and environmental constraints.
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Affiliation(s)
- Lucas Cutri
- Universidade Estadual de Campinas, UNICAMP, Instituto de Biologia, Departamento de Biologia Vegetal, Cidade Universitaria Zeferino Vaz, Campinas, SP, Brazil
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