Phylogeny of Veronica in the Southern and Northern Hemispheres based on plastid, nuclear ribosomal and nuclear low-copy DNA

Albach, Dirk C.; Meudt, Heidi M.

doi:10.1016/j.ympev.2009.09.030

Cited by 39 publications

(68 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the sister relationship of Aragoa and Plantago is well-supported based on multiple markers (7,15,20) (Fig. 1), previous phylogenetic analyses have been equivocal regarding the relationship between the monophyletic genera Aragoa/Plantago, Veronica, and Digitalis (7,(14)(15)(16)(17)(18)(19)(20). Analyses based on combined rbcL, ndhF, and rps2, as well as trnL-F chloroplast sequences, support a close relationship between Aragoa/Plantago and Veronica, with Digitalis sister to these genera together (7,15,20) (Fig.…”

Section: Resultsmentioning

confidence: 89%

“…Unlike close relatives Veronica serpyllifolia and D. purpurea, which have two and three CYC-like genes, respectively, only one CYC-like gene has been recovered from Plantago lanceolata (ribwort plantain; subgenus Psyllium sensu lato) and P. major (common plantain; subgenus Plantago) genomes, suggesting a recent gene loss event in the Plantago lineage (14,18,27,(33)(34)(35). Furthermore, Reardon et al recently demonstrated that expression of this gene does not appear to be confined to the dorsal region of the P. lanceolata flower (27).…”

mentioning

confidence: 98%

“…450 species) and Plantago (ca. 200 species) and the small páramo endemic genus Aragoa (19 species), each of which is monophyletic based on phylogenetic analyses (14)(15)(16)(17)(18)(19). In contrast to the ancestral flower form found in Digitalideae, several Veroniceae species have flowers that are four-parted, radially symmetrical (polysymmetrical and actinomorphic), and/or wind-pollinated ( Fig.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Gradual disintegration of the floral symmetry gene network is implicated in the evolution of a wind-pollination syndrome

Preston

Martinez

Hileman

2011

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

Angiosperms exhibit staggering diversity in floral form, and evolution of floral morphology is often correlated with changes in pollination syndrome. The showy, bilaterally symmetrical flowers of the model species Antirrhinum majus (Plantaginaceae) are highly specialized for bee pollination. In A. majus, CYCLOIDEA (CYC), DICHOTOMA (DICH), RADIALIS (RAD), and DIVARICATA (DIV) specify the development of floral bilateral symmetry. However, it is unclear to what extent evolution of these genes has resulted in flower morphological divergence among closely related members of Plantaginaceae differing in pollination syndrome. We compared floral symmetry genes from insect-pollinated Digitalis purpurea, which has bilaterally symmetrical flowers, with those from closely related Aragoa abietina and wind-pollinated Plantago major, both of which have radially symmetrical flowers. We demonstrate that Plantago, but not Aragoa, species have lost a dorsally expressed CYC-like gene and downstream targets RAD and DIV. Furthermore, the single P. major CYC-like gene is expressed across all regions of the flower, similar to expression of its ortholog in closely related Veronica serpyllifolia. We propose that changes in the expression of duplicated CYC-like genes led to the evolution of radial flower symmetry in Aragoa/Plantago, and that further disintegration of the symmetry gene pathway resulted in the wind-pollination syndrome of Plantago. This model underscores the potential importance of gene loss in the evolution of ecologically important traits.

show abstract

Section: Resultsmentioning

confidence: 89%

mentioning

confidence: 98%

mentioning

confidence: 99%

See 1 more Smart Citation

Gradual disintegration of the floral symmetry gene network is implicated in the evolution of a wind-pollination syndrome

Preston

Martinez

Hileman

2011

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

show abstract

“…Hebe belong in the sun hebe clade. 2 It has been formerly treated as the genus Heliohebe 1 or as part of Hebe 3 or Parahebe, 4 all of which are now included in a broad and monophyletic concept of Veronica. 5 Little chemical work has been undertaken on V. lavaudiana.…”

mentioning

confidence: 99%

“…Hebe belong in the sun hebe clade. 2 It has been formerly treated as the genus Heliohebe 1 or as part of Hebe 3 …”

mentioning

confidence: 99%

Iridoid and Phenylethanoid Glucosides from Veronica lavaudiana

et al. 2011

View full text Add to dashboard Cite

2From an extract of Veronica (sect. Hebe) lavaudiana we have identified mannitol and isolated 11 iridoid glucosides, the carbohydrate ester hebitol II, and four phenylethanoid glycoside esters. Five of the iridoid glycosides are new; of these, lavaudioside A, B, and C (2a, 3a, and 4) are 1-mannityl esters of 8-epiloganic acid while 7e and 7f are 6'-O-caffeoyl derivatives of catalpol. The new phenylethanoid glycoside esters, helioside A, B, and C (8b-8d), are 6'-xylosyl derivatives of aragoside. The structures of the new compounds were elucidated mainly by spectroscopic analysis, but also by chemical degradation.We also demonstrated that the structures of the known glycosides globularitol as well as hebitols I and II should be revised. These compounds are derivatives of mannitol and not glucitol as previously believed.3 Veronica (sect. Hebe) lavaudiana Raoul is an endemic subshrub that grows on basalt outcrops and cliffs above 150 m altitude on Banks Peninsula on the east coast of the South Island of New Zealand. 1 The peninsula, reaching an altitude of about 900 m, is formed from two extinct volcanoes and has at times in the past been separated as an island. V. lavaudiana and its nearest relatives in the sect. Hebe belong in the sun hebe clade. 2 It has been formerly treated as the genus Heliohebe 1 or as part of Hebe 3 or Parahebe, 4 all of which are now included in a broad and monophyletic concept of Veronica. 5 Little chemical work has been undertaken on V. lavaudiana. Thus, this species was included in an early chemotaxonomic survey of iridoids and flavonoids in Veronica and related genera, 6 and in a recent LC/MS investigation on the flavonoid chemistry of the five species of Heliohebe. 7 Fresh plant material was blended with cold MeOH and the water-soluble part of the extract was subjected to a series of chromatographic procedures. Seventeen compounds were isolated and identified including the hexitol, mannitol (1), the carbohydrate ester hebitol II (5), 11 iridoid glucosides (2a, 3a, 4, 6, 7-7f), and four phenylethanoid glycoside esters (8, 8b-8d). Of these, the five iridoids 2a, 3a, 4, 7e, 7f and the three phenylethanoids 8b-8d are new.The composition of the sugar fraction was deduced by interpretation of the 13 C NMR data only. present. Also, two β-hexopyranosyl groups were considered present due to the two doublets at δ H 4.69 and 4.36. In the 13 C NMR spectrum (Table 1) of 4, 39 resonances were observed, of which five were of double and one (δ C 71.6) was of triple intensity, as also confirmed by the HSQC data. Eighteen of the resonances could be assigned to the two caffeoyl groups and comparing with the data for 2a, a further 16 could be assigned to an epiloganyl moiety including its 1-O-glucosyl group. This left 12 13 C NMR resonances to be accounted for. That at δ C 105.0 was assigned to an anomeric carbon atom and the remaining 11, resonating at δ C 64-78, suggested the presence of a hexopyranosyl and a hexityl moiety.2D NMR data suggested that the hexopyranosyl moiety was an additional β-glucopyr...

show abstract

Using target sequence capture to improve the phylogenetic resolution of a rapid radiation in New Zealand Veronica

Thomas

Igea

Meudt

et al. 2021

American J of Botany

Self Cite

View full text Add to dashboard Cite

Recent, rapid species radiations present rich opportunities for improving our understanding of the mechanisms involved in lineage diversification (Abe and Lieberman, 2009;Drummond et al., 2012;Hughes and Atchison, 2015). However, rapid radiations also present a challenge for phylogenetics. Fast successive speciation events often lead to low sequence divergence and poorly resolved relationships with traditional phylogenetic markers, which are typically slow-evolving plastid or nuclear ribosomal (nrDNA) genes (Nicholls et al., 2015;

show abstract

Phylogeny of Veronica in the Southern and Northern Hemispheres based on plastid, nuclear ribosomal and nuclear low-copy DNA

Cited by 39 publications

References 57 publications

Gradual disintegration of the floral symmetry gene network is implicated in the evolution of a wind-pollination syndrome

Gradual disintegration of the floral symmetry gene network is implicated in the evolution of a wind-pollination syndrome

Iridoid and Phenylethanoid Glucosides from Veronica lavaudiana

Using target sequence capture to improve the phylogenetic resolution of a rapid radiation in New Zealand Veronica

Contact Info

Product

Resources

About