Chromosome number evolution in dalbergioid legumes (Papilionoideae, Leguminosae)

Moraes, Ana Paula; Vatanparast, Mohammad; Polido, Caroline do Amaral; Marques, André; Souza, Gustavo; Fortuna-Perez, Ana Paula; Forni‐Martins, Eliana Regina

doi:10.1007/s40415-020-00631-6

Cited by 6 publications

(5 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The ancestral chromosome number reconstructions presented in our study are divergent in relation to the polyploid ancestry of the Rollinia clade. Similar divergences have been reported in other plant groups and, depending on the methodology, different chromosomal events are suggested ( Brottier et al, 2018 ; Moraes et al, 2020 ). With our results it is not possible to infer whether polyploidy is a consequence of a single or multiple ancestral polyploidization events within the Rollinia clade because we sampled only 16% of the clade’s species with chromosome data in the reconstruction ( Figs.…”

Section: Discussionsupporting

confidence: 85%

“…Phylogenetic studies make it possible to understand the evolutionary relationships among species and infer the timing and mode of divergence events ( Sader et al, 2019 ) and their relationship to cariological traits ( Glick & Mayrose, 2014 ; Salman-Minkov, Sabath & Mayrose, 2016 ). These analyses allow inferences about ancestral polyploidy events that could explain the high frequency of polyploids in a lineage and establish the spatiotemporal relationship between domestication and polyploidy ( Moraes et al, 2020 ; Urdampilleta, Forni-Martins & Ferrucci, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Relationship between fruit phenotypes and domestication in hexaploid populations of biribá (Annona mucosa) in Brazilian Amazonia

Serbin

Pinangé

Machado

et al. 2023

PeerJ

View full text Add to dashboard Cite

Background Biribá (Annona mucosa Jacq.) is a fruit tree domesticated in Amazonia and has polyploid populations. The species presents ample phenotypic variation in fruit characteristics, including weight (100–4,000 g) and differences in carpel protrusions. Two cytotypes are recorded in the literature (2n = 28, 42) and genome size records are divergent (2C = 4.77, 5.42 and 6.00 pg). To decipher the role of polyploidy in the domestication of A. mucosa, we examined the relationships among phenotypic variation, chromosome number and genome size, and which came first, polyploidization or domestication. Methodology We performed chromosome counts of A. mucosa from central and western Brazilian Amazonia, and estimated genome size by flow cytometry. We performed phylogenetic reconstruction with publicly available data using a Bayesian framework, time divergence analysis and reconstructed the ancestral chromosome number for the genus Annona and for A. mucosa. Results We observed that variation in fruit phenotypes is not associated with variation in chromosome number and genome size. The most recent common ancestor of A. mucosa is inferred to be polyploid and diverged before domestication. Conclusions We conclude that, when domesticated, A. mucosa was already polyploid and we suggest that human selection is the main evolutionary force behind fruit size and fruit morphological variation in Annona mucosa.

show abstract

Section: Discussionsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Relationship between fruit phenotypes and domestication in hexaploid populations of biribá (Annona mucosa) in Brazilian Amazonia

Serbin

Pinangé

Machado

et al. 2023

PeerJ

View full text Add to dashboard Cite

show abstract

“…Circumscribed as so far, the dalbergioid clade is composed of more than 1300 species (Lavin et al 2001;Wojciechowski et al 2004;Cardoso et al 2012;Moraes et al 2020) and only about 300 (≈ 28%) are known cytogenetically. As shown here, the genus Diphysa, which includes few species, is cytogenetically favorable and represents an opportunity to corroborate not only the constancy of the basic chromosome number (x = 10) exhibited in dalbergioid taxa, but also to verify the karyotypic diversity that surely underlies their evolutionary and speciation processes.…”

Section: Resultsmentioning

confidence: 99%

“…Circumscribed as up to now, the dalbergioids comprise 54 genera and more than 1300 species of perennial and annual trees, shrubs, and herbs (Lavin et al 2001;Wojciechowski et al 2004;Cardoso et al 2012;Moraes et al 2020). Economically important species are included as hardwood species (Dalbergia spp.…”

Section: Introductionmentioning

confidence: 99%

Cytogenetics of Diphysa americana (Mill.) M.Sousa (Leguminosae-Papilionoideae-dalbergioid clade), a rare species from the coast of Oaxaca, Mexico

Tapia-Pastrana

2023

Caryologia

View full text Add to dashboard Cite

Diphysa Jacq. is an essentially Mexican and Central American genus that includes 21 species and only one cytogenetic report. In this work, a surface spread and air-drying method was used to obtain the karyotype of Diphysa americana (Mill) M.Sousa, a rare native tree that grows in a coastal town in the State of Oaxaca, Mexico. Metaphase cells showed a 2n = 20, consistent with the predominant diploid number in the dalbergioid clade. This number contrasts with a previously reported 2n = 16. The karyotypic formula 5m + 5sm, first proposed for a species of the genus, denotes a slightly asymmetric karyotype. The presence of secondary constrictions associated with satellites on the short arms of a pair of sm chromosomes and other cytogenetic parameters require studies in other species of the genus to verify their taxonomic utility. In addition, cells in prometaphase exhibited a circular fragment of unknown origin like that observed in a species of the genus Aeschynomene, also dalbergioid. This fragment could be related to extrachromosomal circular DNA (eccDNA) observed in other plants. Diphysa is a small, cytogenetically favorable genus, and further studies will exhibit the karyotypic diversity that underlies its diversification.

show abstract

“…Cytological investigations often yield comprehensive information about the genetic architecture of a particular species or group of closely related species, or for that matter, species within a genus (Joshi et al 2006). The detection, visualization, and thorough analysis of mitotic complements of somatic cells in plants can thus provide the basis to identify the nature and decipher probable causes of such variations among plant species and their evolution (Rao and Chandel 1991, Hynniewta et al 2011, Shamurailatpam 2012, Moraes et al 2020, Tapia-Pastrana et al 2021. However, there are many plant genera where small size of chromosomes poses a hurdle for discerning the chromosomal-related information, which often results in haphazard and in-conclusive inferences.…”

mentioning

confidence: 99%

Chromosome Complements and Karyological Studies in <i>Medicago</i> Species

et al. 2022

View full text Add to dashboard Cite

The genus Medicago encompasses several significant and economically important annual and perennial taxa, each possessing distinct cytogenetical characteristics. Existing reports on chromosome numbers and karyology of the genus are quite intriguing and indicate the possible existence of underlying genetic variations. The present investigation on 18 taxa included three Lucerne varieties for the study of their chromosomal complements and karyological evolution. Twelve out of the 18 taxa analyzed were observed to be diploids with ten species having chromosome number of 2n=16 and two, Medicago constricta and M. rigidula contained 2n=14 chromosomes each. The remaining four species showed chromosome numbers of 2n=30 and 2n=32. Nucleolar organizing regions (NORs) have been a characteristic feature of the first pair of chromosomes in all the species analyzed. While the majority of the species analyzed show a basic number of x=8, the polybasic nature of the genus becomes apparent with x=7 and 8 and occurrence of polyploid series with 2n=14, 16, and 32. No heteromorphic pairs were observed in the chromosome complements of any of the analyzed species. This, along with the predominance of submetacentric chromosomes in the karyotypes validates the opinion that no significant structural changes have occurred to alter the karyotypes in the evolution of the genus. In the present study, numerical changes were encountered in M. arborea, M. scutellata, M. rugosa, and all three varieties of M. sativa.

show abstract

Chromosome number evolution in dalbergioid legumes (Papilionoideae, Leguminosae)

Cited by 6 publications

References 52 publications

Relationship between fruit phenotypes and domestication in hexaploid populations of biribá (Annona mucosa) in Brazilian Amazonia

Relationship between fruit phenotypes and domestication in hexaploid populations of biribá (Annona mucosa) in Brazilian Amazonia

Cytogenetics of Diphysa americana (Mill.) M.Sousa (Leguminosae-Papilionoideae-dalbergioid clade), a rare species from the coast of Oaxaca, Mexico

Chromosome Complements and Karyological Studies in <i>Medicago</i> Species

Contact Info

Product

Resources

About