Revisiting the cytomolecular evolution of the Caesalpinia group (Leguminosae): a broad sampling reveals new correlations between cytogenetic and environmental variables

Mata-Sucre, Yennifer; Costa, Lucas; Gagnon, Edeline; Lewis, Gwilym P.; Leitch, Ilia J.; Souza, Gustavo

doi:10.1007/s00606-020-01674-8

Cited by 13 publications

(4 citation statements)

References 52 publications

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“…BAGC 91 and 160 (Figure 2a and 2g) are distinguished from the others because of the presence of 20 GC bands, i.e., six CMA ++ and 14 CMA + bands. In general, the CH is not homogeneous, varying quantitatively and qualitatively within and between species (Guerra 2000, Roa and Guerra 2015, Mate-Sucre et al 2020. Moscone et al (2007) found polymorphism regarding number and size of CMA bands in C. annuum cultivars that showed highly GC-rich heterochromatin, with distal and interstitial moderately GC-rich bands distribution among the cultivars.…”

Section: Resultsmentioning

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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Section: Resultsmentioning

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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“…Each yeast colony was dissolved in 100μl of sterilized water and diluted 10 -1 to 10 -3 . At least three colonies per combination were tested and analyzed predominantly be expressed in the sugarcane genome, suggesting that it has a specific crucial role in genetic variations, genome evolution, and adaptation to environmental stress [67].…”

Section: Discussionmentioning

confidence: 99%

Long terminal repeats (LTR) and transcription factors regulate PHRE1 and PHRE2 activity in Moso bamboo under heat stress

et al. 2021

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Background LTR retrotransposons play a significant role in plant growth, genome evolution, and environmental stress response, but their regulatory response to heat stress remains unclear. We have investigated the activities of two LTR retrotransposons, PHRE1 and PHRE2, of moso bamboo (Phyllostachys edulis) in response to heat stress. Results The differential overexpression of PHRE1 and PHRE2 with or without CaMV35s promoter showed enhanced expression under heat stress in transgenic plants. The transcriptional activity studies showed an increase in transposition activity and copy number among moso bamboo wild type and Arabidopsis transgenic plants under heat stress. Comparison of promoter activity in transgenic plants indicated that 5’LTR promoter activity was higher than CaMV35s promoter. Additionally, yeast one-hybrid (Y1H) system and in planta biomolecular fluorescence complementation (BiFC) assay revealed interactions of heat-dependent transcription factors (TFs) with 5’LTR sequence and direct interactions of TFs with pol and gag. Conclusions Our results conclude that the 5’LTR acts as a promoter and could regulate the LTR retrotransposons in moso bamboo under heat stress.

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“…A citogenética é considerada uma ferramenta fundamental na caracterização dos recursos genéticos vegetais (MARTINS et al, 2021;ALMEIDA et al, 2022) e tem grande importância nos estudos onde se avalia as relações evolutivas entre as espécies (PAULA et al, 2020;IBIAPINO et al, 2022a;2022b;COSTA et al, 2023). As abordagens citogenéticas envolvendo o número, morfologia, tamanho dos cromossomos, bem como presença de constrição secundária e quantidade de heterocromatina no cariótipo são dados importantes para a compreensão do processo de evolução nas plantas (RITO et al, 2021;GUERRA, 2000;MATA-SUCRE et al, 2020;CORDEIRO et al, 2022) As lâminas foram feitas de acordo com o protocolo de Carvalho & Saraiva (1993), com algumas modificações. As raízes, antes estocadas no fixador, foram submetidas a duas lavagens com água destilada.…”

Section: Introductionunclassified

Relato De Experiência: O Uso De Glossário Na Disciplina De Paleontologia

Jesus,

Gomes,

Morais

et al. 2023

As Ciências Biológicas E Os Progressos Que Beneficiam a Sociedade

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Revisiting the cytomolecular evolution of the Caesalpinia group (Leguminosae): a broad sampling reveals new correlations between cytogenetic and environmental variables

Cited by 13 publications

References 52 publications

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

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

Long terminal repeats (LTR) and transcription factors regulate PHRE1 and PHRE2 activity in Moso bamboo under heat stress

Relato De Experiência: O Uso De Glossário Na Disciplina De Paleontologia

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