@ARTICLE{TreeBASE2Ref15666,
author = {Alessia Guggisberg and Francois Bretagnolle and Guilhem Mansion},
title = {Allopolyploid origin of the Mediterranean endemic, Centaurium bianoris (Gentianaceae), inferred by molecular markers},
year = {2005},
keywords = {},
doi = {},
url = {},
pmid = {},
journal = {Systematic Botany},
volume = {},
number = {},
pages = {},
abstract = {Centaurium bianoris (Gentianaceae) is restricted to Majorca, the main island of the Balearic Archipelago. This tetraploid species is characterised by salmon-coloured corollas (var. bianoris), but pink (var. roseum) and yellow (var. sulfureum) varieties have also been described. An allopolyploid origin has been proposed between the diploids C. maritimum (yellow flowers) and C. tenuiflorum var. acutiflorum (pink flowers), both occurring on Majorca and in other places of the Mediterranean basin. In this study, we tested the proposed hybrid origin of C. bianoris by using RAPD fingerprinting and both direct and cloned sequences of the nuclear ribosomal ITS, and the chloroplast trnLF regions. Our molecular data confirmed the assumption of an allotetraploid origin of C. bianoris via hybridisation between C. tenuiflorum and C. maritimum, the latter being the maternal parent. Moreover, the so-called varieties roseum and sulfureum appeared to be only floral morphs that may have arose via genomic processes such as gene silencing. Hybridisation is probably the cause of the ITS sequence polymorphism observed in C. bianoris, whereas backcrosses with either parent may be responsible for the apparent bidirectional homogenisation observed in ITS clones. Finally, the polyphyletic behaviour of C. bianoris on the ITS cladogram, combined with the differential rates of homogenisation observed in ITS sequences, may denote a recurrent origin for that taxon. This result contrasts with the narrow distribution of C. bianoris, compared to that of its diploid parents, suggesting instead a single origin for this hybrid.}
}
Citation for Study 1431
Citation title:
"Allopolyploid origin of the Mediterranean endemic, Centaurium bianoris (Gentianaceae), inferred by molecular markers".
This study was previously identified under the legacy study ID S1366
(Status: Published).
Citation
Guggisberg A., Bretagnolle F., & Mansion G. 2005. Allopolyploid origin of the Mediterranean endemic, Centaurium bianoris (Gentianaceae), inferred by molecular markers. Systematic Botany, null.
Authors
-
Guggisberg A.
-
Bretagnolle F.
-
Mansion G.
Abstract
Centaurium bianoris (Gentianaceae) is restricted to Majorca, the main island of the Balearic Archipelago. This tetraploid species is characterised by salmon-coloured corollas (var. bianoris), but pink (var. roseum) and yellow (var. sulfureum) varieties have also been described. An allopolyploid origin has been proposed between the diploids C. maritimum (yellow flowers) and C. tenuiflorum var. acutiflorum (pink flowers), both occurring on Majorca and in other places of the Mediterranean basin. In this study, we tested the proposed hybrid origin of C. bianoris by using RAPD fingerprinting and both direct and cloned sequences of the nuclear ribosomal ITS, and the chloroplast trnLF regions. Our molecular data confirmed the assumption of an allotetraploid origin of C. bianoris via hybridisation between C. tenuiflorum and C. maritimum, the latter being the maternal parent. Moreover, the so-called varieties roseum and sulfureum appeared to be only floral morphs that may have arose via genomic processes such as gene silencing. Hybridisation is probably the cause of the ITS sequence polymorphism observed in C. bianoris, whereas backcrosses with either parent may be responsible for the apparent bidirectional homogenisation observed in ITS clones. Finally, the polyphyletic behaviour of C. bianoris on the ITS cladogram, combined with the differential rates of homogenisation observed in ITS sequences, may denote a recurrent origin for that taxon. This result contrasts with the narrow distribution of C. bianoris, compared to that of its diploid parents, suggesting instead a single origin for this hybrid.
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S1431
- Other versions:
Nexus
NeXML
- Show BibTeX reference
@ARTICLE{TreeBASE2Ref15666,
author = {Alessia Guggisberg and Francois Bretagnolle and Guilhem Mansion},
title = {Allopolyploid origin of the Mediterranean endemic, Centaurium bianoris (Gentianaceae), inferred by molecular markers},
year = {2005},
keywords = {},
doi = {},
url = {},
pmid = {},
journal = {Systematic Botany},
volume = {},
number = {},
pages = {},
abstract = {Centaurium bianoris (Gentianaceae) is restricted to Majorca, the main island of the Balearic Archipelago. This tetraploid species is characterised by salmon-coloured corollas (var. bianoris), but pink (var. roseum) and yellow (var. sulfureum) varieties have also been described. An allopolyploid origin has been proposed between the diploids C. maritimum (yellow flowers) and C. tenuiflorum var. acutiflorum (pink flowers), both occurring on Majorca and in other places of the Mediterranean basin. In this study, we tested the proposed hybrid origin of C. bianoris by using RAPD fingerprinting and both direct and cloned sequences of the nuclear ribosomal ITS, and the chloroplast trnLF regions. Our molecular data confirmed the assumption of an allotetraploid origin of C. bianoris via hybridisation between C. tenuiflorum and C. maritimum, the latter being the maternal parent. Moreover, the so-called varieties roseum and sulfureum appeared to be only floral morphs that may have arose via genomic processes such as gene silencing. Hybridisation is probably the cause of the ITS sequence polymorphism observed in C. bianoris, whereas backcrosses with either parent may be responsible for the apparent bidirectional homogenisation observed in ITS clones. Finally, the polyphyletic behaviour of C. bianoris on the ITS cladogram, combined with the differential rates of homogenisation observed in ITS sequences, may denote a recurrent origin for that taxon. This result contrasts with the narrow distribution of C. bianoris, compared to that of its diploid parents, suggesting instead a single origin for this hybrid.}
}
- Show RIS reference
TY - JOUR
ID - 15666
AU - Guggisberg,Alessia
AU - Bretagnolle,Francois
AU - Mansion,Guilhem
T1 - Allopolyploid origin of the Mediterranean endemic, Centaurium bianoris (Gentianaceae), inferred by molecular markers
PY - 2005
KW -
UR -
N2 - Centaurium bianoris (Gentianaceae) is restricted to Majorca, the main island of the Balearic Archipelago. This tetraploid species is characterised by salmon-coloured corollas (var. bianoris), but pink (var. roseum) and yellow (var. sulfureum) varieties have also been described. An allopolyploid origin has been proposed between the diploids C. maritimum (yellow flowers) and C. tenuiflorum var. acutiflorum (pink flowers), both occurring on Majorca and in other places of the Mediterranean basin. In this study, we tested the proposed hybrid origin of C. bianoris by using RAPD fingerprinting and both direct and cloned sequences of the nuclear ribosomal ITS, and the chloroplast trnLF regions. Our molecular data confirmed the assumption of an allotetraploid origin of C. bianoris via hybridisation between C. tenuiflorum and C. maritimum, the latter being the maternal parent. Moreover, the so-called varieties roseum and sulfureum appeared to be only floral morphs that may have arose via genomic processes such as gene silencing. Hybridisation is probably the cause of the ITS sequence polymorphism observed in C. bianoris, whereas backcrosses with either parent may be responsible for the apparent bidirectional homogenisation observed in ITS clones. Finally, the polyphyletic behaviour of C. bianoris on the ITS cladogram, combined with the differential rates of homogenisation observed in ITS sequences, may denote a recurrent origin for that taxon. This result contrasts with the narrow distribution of C. bianoris, compared to that of its diploid parents, suggesting instead a single origin for this hybrid.
L3 -
JF - Systematic Botany
VL -
IS -
ER -