TreeBASE Search-Citation for study 2220

@ARTICLE{TreeBASE2Ref2157, author = {Lorenzo Cecchi and Federico Selvi}, title = {Phylogenetic relationships of the monotypic genera Halacsya and Paramoltkia and the origins of serpentine adaptation in circum-mediterranean Lithospermeae (Boraginaceae): insights from ITS and matK DNA sequences.}, year = {2008}, keywords = {}, doi = {}, url = {}, pmid = {}, journal = {Taxon}, volume = {}, number = {}, pages = {}, abstract = {Halacsya and Paramoltkia are monotypic and partially sympatric genera in the Balkans, with no clear relationships among extant Lithospermeae due to striking morphological autapomorphies and scarcity of phylogenetic analyses in this group. Both of the species H. sendtneri and P. doerfleri show a strict selectivity for serpentine soils, posing the question of whether this edaphic specialization reflects a common ancestry or a parallel process of adaptive evolution in unrelated lineages. DNA sequences from the nuclear ITS and chloroplast matK regions were generated from multiple accessions of Halacsya and Paramoltkia, and for representatives of all genera of circum-mediterranean Lithospermeae. SEM observations of pollen stereostructure were also conducted to test relationships indicated by molecular phylogenies. Parsimony analyses revealed the existence of a clade of strongly differentiated monotypic Lithospermeae including Halacsya and Paramoltkia; ITS provided a better resolution of relationships and showed the two genera to be sistergroups close to Mairetis and Moltkiopsis, and no affinity with Moltkia as supposed by past authors. Pollen characters corroborated the phylogenetic affinity between the two Balkan genera. Five other monophyletic clades were recognised: Onosma-Echium, Moltkia, Lithospermum s.l., Arnebia-Macrotomia and Alkanna-Podonosma. Mapping the main edaphic habitats of Lithospermeae onto molecular cladograms showed that serpentinophytism as an obligate condition originated separately in the clade of monotypic genera and in that of Onosma-Echium. In Halacsya and Paramoltkia it represents therefore an early ecological synapomorphy probably originated in-situ from non-serpentine ancestors also close to Moltkiopsis and Mairetis.} }

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Citation for Study 2220

Citation title: "Phylogenetic relationships of the monotypic genera Halacsya and Paramoltkia and the origins of serpentine adaptation in circum-mediterranean Lithospermeae (Boraginaceae): insights from ITS and matK DNA sequences.".

This study was previously identified under the legacy study ID S2229 (Status: Published).

Citation

Cecchi L., & Selvi F. 2008. Phylogenetic relationships of the monotypic genera Halacsya and Paramoltkia and the origins of serpentine adaptation in circum-mediterranean Lithospermeae (Boraginaceae): insights from ITS and matK DNA sequences. Taxon, null.

Authors

Cecchi L.
Selvi F.

Abstract

Halacsya and Paramoltkia are monotypic and partially sympatric genera in the Balkans, with no clear relationships among extant Lithospermeae due to striking morphological autapomorphies and scarcity of phylogenetic analyses in this group. Both of the species H. sendtneri and P. doerfleri show a strict selectivity for serpentine soils, posing the question of whether this edaphic specialization reflects a common ancestry or a parallel process of adaptive evolution in unrelated lineages. DNA sequences from the nuclear ITS and chloroplast matK regions were generated from multiple accessions of Halacsya and Paramoltkia, and for representatives of all genera of circum-mediterranean Lithospermeae. SEM observations of pollen stereostructure were also conducted to test relationships indicated by molecular phylogenies. Parsimony analyses revealed the existence of a clade of strongly differentiated monotypic Lithospermeae including Halacsya and Paramoltkia; ITS provided a better resolution of relationships and showed the two genera to be sistergroups close to Mairetis and Moltkiopsis, and no affinity with Moltkia as supposed by past authors. Pollen characters corroborated the phylogenetic affinity between the two Balkan genera. Five other monophyletic clades were recognised: Onosma-Echium, Moltkia, Lithospermum s.l., Arnebia-Macrotomia and Alkanna-Podonosma. Mapping the main edaphic habitats of Lithospermeae onto molecular cladograms showed that serpentinophytism as an obligate condition originated separately in the clade of monotypic genera and in that of Onosma-Echium. In Halacsya and Paramoltkia it represents therefore an early ecological synapomorphy probably originated in-situ from non-serpentine ancestors also close to Moltkiopsis and Mairetis.

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Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S2220
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Show BibTeX reference

		@ARTICLE{TreeBASE2Ref2157,
	 author = {Lorenzo  Cecchi and Federico  Selvi},
	 title = {Phylogenetic relationships of the monotypic genera Halacsya and Paramoltkia and the origins of serpentine adaptation in circum-mediterranean Lithospermeae (Boraginaceae): insights from ITS and matK DNA sequences.},
	 year = {2008},
	 keywords = {},
	 doi = {},
	 url = {},
	 pmid = {},
	 journal = {Taxon},
	 volume = {},
	 number = {},
	 pages = {},
	 abstract = {Halacsya and Paramoltkia are monotypic and partially sympatric genera in the Balkans, with no clear relationships among extant Lithospermeae due to striking morphological autapomorphies and scarcity of phylogenetic analyses in this group. Both of the species H. sendtneri and P. doerfleri show a strict selectivity for serpentine soils, posing the question of whether this edaphic specialization reflects a common ancestry or a parallel process of adaptive evolution in unrelated lineages. DNA sequences from the nuclear ITS and chloroplast matK regions were generated from multiple accessions of Halacsya and Paramoltkia, and for representatives of all genera of circum-mediterranean Lithospermeae. SEM observations of pollen stereostructure were also conducted to test relationships indicated by molecular phylogenies. Parsimony analyses revealed the existence of a clade of strongly differentiated monotypic Lithospermeae including Halacsya and Paramoltkia; ITS provided a better resolution of relationships and showed the two genera to be sistergroups close to Mairetis and Moltkiopsis, and no affinity with Moltkia as supposed by past authors. Pollen characters corroborated the phylogenetic affinity between the two Balkan genera. Five other monophyletic clades were recognised: Onosma-Echium, Moltkia, Lithospermum s.l., Arnebia-Macrotomia and Alkanna-Podonosma. Mapping the main edaphic habitats of Lithospermeae onto molecular cladograms showed that serpentinophytism as an obligate condition originated separately in the clade of monotypic genera and in that of Onosma-Echium. In Halacsya and Paramoltkia it represents therefore an early ecological synapomorphy probably originated in-situ from non-serpentine ancestors also close to Moltkiopsis and Mairetis.}
}

Show RIS reference

TY - JOUR
ID - 2157
AU - Cecchi,Lorenzo
AU - Selvi,Federico
T1 - Phylogenetic relationships of the monotypic genera Halacsya and Paramoltkia and the origins of serpentine adaptation in circum-mediterranean Lithospermeae (Boraginaceae): insights from ITS and matK DNA sequences.
PY - 2008
KW -
UR -
N2 - Halacsya and Paramoltkia are monotypic and partially sympatric genera in the Balkans, with no clear relationships among extant Lithospermeae due to striking morphological autapomorphies and scarcity of phylogenetic analyses in this group. Both of the species H. sendtneri and P. doerfleri show a strict selectivity for serpentine soils, posing the question of whether this edaphic specialization reflects a common ancestry or a parallel process of adaptive evolution in unrelated lineages. DNA sequences from the nuclear ITS and chloroplast matK regions were generated from multiple accessions of Halacsya and Paramoltkia, and for representatives of all genera of circum-mediterranean Lithospermeae. SEM observations of pollen stereostructure were also conducted to test relationships indicated by molecular phylogenies. Parsimony analyses revealed the existence of a clade of strongly differentiated monotypic Lithospermeae including Halacsya and Paramoltkia; ITS provided a better resolution of relationships and showed the two genera to be sistergroups close to Mairetis and Moltkiopsis, and no affinity with Moltkia as supposed by past authors. Pollen characters corroborated the phylogenetic affinity between the two Balkan genera. Five other monophyletic clades were recognised: Onosma-Echium, Moltkia, Lithospermum s.l., Arnebia-Macrotomia and Alkanna-Podonosma. Mapping the main edaphic habitats of Lithospermeae onto molecular cladograms showed that serpentinophytism as an obligate condition originated separately in the clade of monotypic genera and in that of Onosma-Echium. In Halacsya and Paramoltkia it represents therefore an early ecological synapomorphy probably originated in-situ from non-serpentine ancestors also close to Moltkiopsis and Mairetis.
L3 -
JF - Taxon
VL -
IS -
ER -