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6 results on '"Rothfels, C. J."'

3. The Evolution of HD2 Proteins in Green Plants

Author

Bourque, S., Jeandroz, S., Grandperret, V., Lehotai, Nora, Aime, S., Soltis, D. E., Miles, N. W., Melkonian, M., Deyholos, M. K., Leebens-Mack, J. H., Chase, M. W., Rothfels, C. J., Stevenson, D. W., Graham, S. W., Wang, X., Wu, S., Pires, J. C., Edger, P. P., Yan, Z., Xie, Y., Carpenter, E. J., Wong, G. K. S., Wendehenne, D., Nicolas-Frances, V., Bourque, S., Jeandroz, S., Grandperret, V., Lehotai, Nora, Aime, S., Soltis, D. E., Miles, N. W., Melkonian, M., Deyholos, M. K., Leebens-Mack, J. H., Chase, M. W., Rothfels, C. J., Stevenson, D. W., Graham, S. W., Wang, X., Wu, S., Pires, J. C., Edger, P. P., Yan, Z., Xie, Y., Carpenter, E. J., Wong, G. K. S., Wendehenne, D., and Nicolas-Frances, V.

Abstract

In eukaryotes, protein deacetylation is carried out by two well-conserved his tone deacetylase (HDAC) families: RPD3/HDA1 and SIR2. Intriguingly, model plants such as Arabidopsis express an additional plant-specific HDAC family, termed type-2 HDACs (HD2s). Transcriptomic analyses from more than 1300 green plants generated by the 1000 plants (1KP) consortium showed that HD2s appeared early in green plant evolution, the first members being detected in several streptophyte green alga. The HD2 family has expanded via several rounds of successive duplication; members are expressed in all major green plant clades. Interestingly, angiosperm species express new HD2 genes devoid of a zinc-finger domain, one of the main structural features of HD2s. These variants may have been associated with the origin and/or the biology of the ovule/seed.

Published
2016
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4. Between Two Fern Genomes

Author

Sessa, E. B., Banks, J. A., Barker, M. S., Der, J. P., Duffy, A. M., Graham, S. W., Hasebe, M., Langdale, J., Li, F. W., Marchant, D. B., Pryer, K. M., Rothfels, C. J., Roux, S. J., Salmi, M. L., Sigel, E. M., Soltis, D. E., Soltis, P. S., Stevenson, D. W., and Wolf, Paul G.

Subjects
Land Plants, Comparative Analyses, Ferns, Azolla, Ceratopteris, Genomics, Biology
Abstract

Ferns are the only major lineage of vascular plants not represented by a sequenced nuclear genome. This lack of genome sequence information significantly impedes our ability to understand and reconstruct genome evolution not only in ferns, but across all land plants. Azolla and Ceratopteris are ideal and complementary candidates to be the first ferns to have their nuclear genomes sequenced. They differ dramatically in genome size, life history, and habit, and thus represent the immense diversity of extant ferns. Together, this pair of genomes will facilitate myriad large-scale comparative analyses across ferns and all land plants. Here we review the unique biological characteristics of ferns and describe a number of outstanding questions in plant biology that will benefit from the addition of ferns to the set of taxa with sequenced nuclear genomes. We explain why the fern clade is pivotal for understanding genome evolution across land plants, and we provide a rationale for how knowledge of fern genomes will enable progress in research beyond the ferns themselves.

Published
2014

5. 'Var hör hällebräken, ekbräken och svartbräknar hemma? - Äntligen en fylogeni över Eupolypods II'

Author

Larsson, Anders, Rothfels, C. J., Kuo, L. Y., Shuettpelz, E, Pryer, K, Korall, Petra, Larsson, Anders, Rothfels, C. J., Kuo, L. Y., Shuettpelz, E, Pryer, K, and Korall, Petra

Abstract

De flesta ormbunkar ser nästan likadana ut och det finns tämligen få morfologiska synapomorfier som ger indikationer på hur släkten och familjer relaterar till varandra. Detta har gjort att familjeavgränsningar och inbördes familjerelationer har varit , inte minst inom Eupolypods II. Denna stora gruppering omfattar ca 1/3 av världens ormbunksarter fördelade inom familjerna Woodsiaceae (hällebräkenväxter), Thelypteridaceae (kärrbräkenväxter), Aspleniaceae (svartbräkenväxter), Blechnaceae (kambräkenväxter) och Onocleaceae. Vill du ha svenska namnen först och latinet i parentes som du har på artnamnen nedan?? Med hjälp av sekvensdata från fem kloroplastregioner (rbcL, atpA, atpB, trnG-R, matK) från 81 arter, vilka innefattar samtliga tidigare svårplacerade släkten, har vi lyckats beskriva tidigare okända relationer inom Eupolypods II, och utvärderat monofylin hos familjerna.. Analysen visar att stenbräken (Cystopteris fragilis) och ekbräken (Gymnocarpium dryopteris) ingår i systergruppen till övriga ormbunkar i Eupolypods II .Vidare är Woodsiaceae i sin nuvarande avgränsning parafyletisk och måste omformas. Om man vill behålla namnet Woodsiaceae innebär det att familjen blir monotypisk och endast innefattar släktet Woodsia, Hällebräknar.

Published
2010

6. The Evolution of HD2 Proteins in Green Plants.

Author

Bourque S, Jeandroz S, Grandperret V, Lehotai N, Aimé S, Soltis DE, Miles NW, Melkonian M, Deyholos MK, Leebens-Mack JH, Chase MW, Rothfels CJ, Stevenson DW, Graham SW, Wang X, Wu S, Pires JC, Edger PP, Yan Z, Xie Y, Carpenter EJ, Wong GKS, Wendehenne D, and Nicolas-Francès V

Subjects
Gene Expression Regulation, Plant, Histone Deacetylases genetics, Plant Proteins genetics, Viridiplantae genetics, Histone Deacetylases metabolism, Plant Proteins metabolism, Viridiplantae metabolism
Abstract

In eukaryotes, protein deacetylation is carried out by two well-conserved histone deacetylase (HDAC) families: RPD3/HDA1 and SIR2. Intriguingly, model plants such as Arabidopsis express an additional plant-specific HDAC family, termed type-2 HDACs (HD2s). Transcriptomic analyses from more than 1300 green plants generated by the 1000 plants (1KP) consortium showed that HD2s appeared early in green plant evolution, the first members being detected in several streptophyte green alga. The HD2 family has expanded via several rounds of successive duplication; members are expressed in all major green plant clades. Interestingly, angiosperm species express new HD2 genes devoid of a zinc-finger domain, one of the main structural features of HD2s. These variants may have been associated with the origin and/or the biology of the ovule/seed., (Copyright © 2016 Elsevier Ltd. All rights reserved.)

Published
2016
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