| Records |
| Author |
Scotti-Saintagne, C.; Bodenes, C.; Barreneche, T.; Pot, D.; Plomion, C.; Kremer, A. |
| Title |
Distribution of genomic regions differentiating oak species assessed by QTL detection |
Type |
Journal Article |
| Year |
2004 |
Publication |
Heredity |
Abbreviated Journal |
Heredity |
| Volume |
92 |
Issue |
1 |
Pages |
20-30 |
| Keywords |
QTL; leaf morphology; repeatability; genetic map; Q. robur |
| Abstract |
Pedunculate oak and sessile oak are two sympatric inter-fertile species that exhibit leaf morphological differences. We aimed to detect quantitative trait loci (QTLs) of these traits in order to locate genomic regions involved in species differentiation. A total of 15 leaf morphological traits were assessed in a mixed forest stand composed of Quercus petraea and Q. robur and in a full-sib pedigree of Q. robur. The progeny of the full-sib family were vegetatively propagated in two successive experiments comprising 174 and 216 sibs, and assessments were made on two leaves collected on each of the 1080 and 1530 cuttings corresponding to the two experiments. Traits that exhibited strong species differences in the mixed stand tended also to have higher repeatability values in the mapping population, thus indicating higher genetic control. A genetic map was constructed for QTL detection. Composite interval mapping with the one QTL model was used for QTL detection. From one to three QTLs were detected for 13 traits. In-depth analysis of the QTLs, controlling the five morphological traits that exhibited the highest interspecific differences in the mixed stand, indicated that they were distributed on six linkage groups, with two clusters comprising QTLs of at least two discriminant traits. These results were reinforced when error 1 for QTL detection was set at 5% at the chromosome level, as up to nine clusters could be identified. In conclusion, traits involved in interspecific differentiation of oaks are under polygenic control and widespread in clusters across the genome. |
| Address |
INRA, UMR Biodivers Genes & Ecosyst, F-33612 Cestas, France |
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Thesis |
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| Publisher |
NATURE PUBLISHING GROUP |
Place of Publication |
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Edition |
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ISSN  |
0018-067X |
ISBN |
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Expedition |
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Conference |
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| Notes |
ISI:000187216300005 |
Approved |
no |
| Call Number |
EcoFoG @ eric.marcon @ |
Serial |
267 |
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| Author |
Yazdani, R.; Scotti, I.; Jansson, G.; Plomion, C.; Mathur, G. |
| Title |
Inheritance and diversity of simple sequence repeat (SSR) microsatellite markers in various families of Picea abies |
Type |
Journal Article |
| Year |
2003 |
Publication |
Hereditas |
Abbreviated Journal |
Hereditas |
| Volume |
138 |
Issue |
3 |
Pages |
219-227 |
| Keywords |
|
| Abstract |
A large number of sequence-specific SSRs were screened by using electrophoresis on metaphore agarose gels with the bands visualized by ethidium bromide staining. Many SSRs appeared as codominant and many as dominant markers, with presence or absence of bands. A simple Mendelian inheritance pattern for most codominant and dominant SSR loci was found. For many codominant SSR markers, null alleles were detected. The proportion of dominant microsatellites detected in this study (close to 50 %) was much higher than that commonly reported in many other studies. A high proportion of dominant markers together with a high frequency of codominant markers with null alleles may represent two important limitations for the use of microsatellites in different studies. On the other hand, many polymorphic codominant SSR microsatellite markers were found to be highly repeatable, and can be used for population studies, seed certification, quality control of controlled crosses, paternity analysis, pollen contamination, and mapping of QTL in related families. In this paper, we report on the inheritance pattern and diversity of codominant and dominant SSR microsatellites in seven families of Picea abies sharing a common mother. |
| Address |
Swedish Univ Agr Sci, Dept Plant Biol & Forest Genet, Uppsala, Sweden |
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Thesis |
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| Publisher |
BLACKWELL MUNKSGAARD |
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Original Title |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0018-0661 |
ISBN |
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Conference |
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| Notes |
ISI:000187074000010 |
Approved |
no |
| Call Number |
EcoFoG @ eric.marcon @ |
Serial |
268 |
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| Author |
Garcia-Davila, C.; Aldana Gomero, D.; Renno, J.-F.; Diaz Soria, R.; Hidalgo Pizango, G.; Flores Llampazo, G.; Castro-Ruiz, D.; Mejia de Loayza, E.; Angulo Chavez, C.; Mader, M.; Tysklind, N.; Paredes-Villanueva, K.; del Castillo Torres, D.; Degen, B.; Honorio Coronado, E.N. |
| Title |
Molecular evidence for three genetic species of Dipteryx in the Peruvian Amazon |
Type |
Journal Article |
| Year |
2020 |
Publication |
Genetica |
Abbreviated Journal |
Genetica |
| Volume |
148 |
Issue |
1 |
Pages |
1-11 |
| Keywords |
D. micrantha; Dipteryx charapilla; Genetic diversity; Microsatellites; Sequencing; Shihuahuaco; microsatellite DNA; plant DNA; allele; Dipteryx; DNA sequence; genetic variation; genetics; genotype; haplotype; Peru; phylogeny; plastid; river; species difference; Alleles; Dipteryx; DNA, Plant; Genetic Variation; Genotype; Haplotypes; Microsatellite Repeats; Peru; Phylogeny; Plastids; Rivers; Sequence Analysis, DNA; Species Specificity |
| Abstract |
There is a high international demand for timber from the genus Dipteryx, or “shihuahuaco” as it is known in Peru. Developing tools that allow the identification and discrimination of Dipteryx species is therefore important for supporting management of natural populations and to underpin legal trade of its timber. The objective of this study was the molecular characterization of Dipteryx species in the Peruvian Amazonia. Two plastid regions (cpDNA: trnH–psbA and matK) were sequenced and 11 microsatellite markers (nDNA) were genotyped for 32 individuals identified as Dipteryx charapilla, D. micrantha morphotype 1 and D. micrantha morphotype 2. Using the concatenated sequences of the plastid genes, we identified ten haplotypes that were not shared between the species or between the D. micrantha morphotypes. Haplotypic diversity was greater in D. micrantha morphotype 2 and D. charapilla than in D. micrantha morphotype 1, which presented only one haplotype with a wide distribution in Peru. The microsatellites allowed the discrimination of the same three clades and identified diagnostic alleles for each clade. These results allowed us to demonstrate that the two morphotypes of D. micrantha are different at both the plastid and nuclear markers, which supports the existence of three genetically distinct species in Peru. This study provides information for the genetic discrimination of Dipteryx species and emphasises the importance of conserving the genetic variability of this genus in the Peruvian Amazonia. © 2019, Springer Nature Switzerland AG. |
| Address |
Carrera de Ingeniería Foresta, Laboratorio de Dendrocronología, Facultad de Ciencias Agrícolas, Universidad Autónoma Gabriel René Moreno, Km 9 carretera al Norte, El Vallecito, Santa Cruz, Bolivia |
| Corporate Author |
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Thesis |
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| Publisher |
Springer |
Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
00166707 (Issn) |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
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Approved |
no |
| Call Number |
EcoFoG @ webmaster @ |
Serial |
990 |
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| Author |
Yatabe, Y.; Kane, N.C.; Scotti-Saintagne, C.; Rieseberg, L.H. |
| Title |
Rampant gene exchange across a strong reproductive barrier between the annual sunflowers, Helianthus annuus and H-petiolaris |
Type |
Journal Article |
| Year |
2007 |
Publication |
Genetics |
Abbreviated Journal |
Genetics |
| Volume |
175 |
Issue |
4 |
Pages |
1883-1893 |
| Keywords |
|
| Abstract |
Plant species may remain morphologically distinct despite gene exchange with congeners, yet little is known about the genomewide pattern of introgression among species. Here we analyze the effects of persistent gene flow on genomic differentiation between the sympatric sunflower species Helianthus annuus and H. petiolaris. While the species are strongly isolated in testcrosses, genetic distances at 108 microsatellite loci and 14 sequenced genes are highly variable and much lower (on average) than for more closely related but historically allopatric congeners. Our analyses failed to detect a positive association between levels of genetic differentiation and chromosomal rearrangements (as reported in a prior publication) or proximity to QTL for morphological differences or hybrid sterility. However, a significant increase in differentiation was observed for markers within 5 cM of chromosomal breakpoints. Together, these results suggest that islands of differentiation between these two species are small, except in areas of low recombination. Furthermore, only microsatellites associated with ESTs were identified as outlier loci in tests for selection, which might indicate that the ESTs themselves are the targets of selection rather than linked genes (or that coding regions are not randomly distributed). In general, these results indicate that even strong and genetically complex reproductive barriers cannot prevent widespread introgression. |
| Address |
Indiana Univ, Dept Biol, Bloomington, IN 47405 USA, Email: lriesebe@indiana.edu |
| Corporate Author |
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Thesis |
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| Publisher |
GENETICS |
Place of Publication |
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Editor |
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| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0016-6731 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
ISI:000246448800029 |
Approved |
no |
| Call Number |
EcoFoG @ eric.marcon @ |
Serial |
216 |
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| Author |
Scotti-Saintagne, C.; Mariette, S.; Porth, I.; Goicoechea, P.G.; Barreneche, T.; Bodenes, K.; Burg, K.; Kremer, A. |
| Title |
Genome scanning for interspecific differentiation between two closely related oak species [Quercus robur L. and Q petraea (Matt.) Liebl.] |
Type |
Journal Article |
| Year |
2004 |
Publication |
Genetics |
Abbreviated Journal |
Genetics |
| Volume |
168 |
Issue |
3 |
Pages |
1615-1626 |
| Keywords |
|
| Abstract |
Interspecific differentiation values (G(ST)) between two closely related oak species (Quercus petraea and Q. robur) were compiled across different studies with the aim to explore the distribution of differentiation at the genome level. The study was based on a total set of 389 markers (isozymes, AFLPs, SCARs, microsatellites, and SNPs) for which allelic frequencies were estimated in pairs of populations sampled throughout the sympatric distribution of the two species. The overall distribution of GST values followed an L-shaped curve with most markers exhibiting low species differentiation (G(ST) < 0.01) and only a few loci reaching >10% levels. Twelve percent of the loci exhibited significant G(ST) deviations to neutral expectations, suggesting that selection contributed to species divergence. Coding regions expressed higher differentiation than noncoding regions. Among the 389 markers, 158 could be mapped on the 12 linkage groups of the existing Q. robur genetic map. Outlier loci with large G, values were distributed over 9 linkage groups. One cluster of three outlier loci was found within 0.51 cM; but significant autocorrelation of GST was observed at distances <2 cM. The size and distribution of genomic regions involved in species divergence are discussed in reference to hitchhiking effects and disruptive selection. |
| Address |
INRA, UMR Biodivers Genes & Ecosyst, F-33612 Cestas, France, Email: kremer@pierronton.inra.fr |
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Thesis |
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| Publisher |
GENETICS |
Place of Publication |
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Editor |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
0016-6731 |
ISBN |
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Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
ISI:000225767400041 |
Approved |
no |
| Call Number |
EcoFoG @ eric.marcon @ |
Serial |
258 |
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| Author |
Delabie, J.H.C.; Groc, S.; Dejean, A. |
| Title |
The tramp ant technomyrmex vitiensis (Hymenoptera: Formicidae: Dolichoderinae) on South America |
Type |
Journal Article |
| Year |
2011 |
Publication |
Florida Entomologist |
Abbreviated Journal |
Fla. Entomol. |
| Volume |
94 |
Issue |
3 |
Pages |
688-689 |
| Keywords |
|
| Abstract |
Technomyrmex vitiensis is a tramp ant that has spread through many parts of the Old World tropics via human commerce. This species has been previously reported only once in the New World, from San Francisco, California. Here, we report the first records of T. vitiensis in South America, from two sites deep in the forest of French Guiana. It is not clear how these ants were transported to such remote sites, 100 km inland. Copyright © 2011 BioOne All rights reserved. |
| Address |
Université de Toulouse, UPS, 118 route de Narbonne, F-31062 Toulouse, France |
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Edition |
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| ISSN |
00154040 (Issn) |
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| Notes |
Export Date: 26 October 2011; Source: Scopus; Coden: Fetma; doi: 10.1653/024.094.0335; Language of Original Document: English; Correspondence Address: Delabie, J.H.C.; Universidade Estadual de Santa Cruz, Rodovia Ilhéus-Itabuna, Km 16, 45650-000 Ilhéus, Bahia, Brazil |
Approved |
no |
| Call Number |
EcoFoG @ webmaster @ |
Serial |
364 |
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| Author |
Bertani, S.; Houel, E.; Jullian, V.; Bourdy, G.; Valentin, A.; Stien, D.; Deharo, E. |
| Title |
New findings on Simalikalactone D, an antimalarial compound from Quassia amara L. (Simaroubaceae) |
Type |
Journal Article |
| Year |
2012 |
Publication |
Experimental Parasitology |
Abbreviated Journal |
Exp. Parasitol. |
| Volume |
130 |
Issue |
4 |
Pages |
341-347 |
| Keywords |
Antimalarial; Plasmodium; Quassia amara; Quassinoid; Simalikalactone d |
| Abstract |
Quassia amara L. (Simaroubaceae) is a species widely used as tonic and is claimed to be an efficient antimalarial all over the Northern part of the Amazon basin. Quassinoid compound Simalikalactone D (SkD) has been shown to be one of the molecules responsible for the antiplasmodial activity of a watery preparation made out of juvenile fresh leaves of this plant. Because of its strong antimalarial activity, we decided to have a further insight of SkD pharmacological properties, alone or in association with classical antimalarials. At concentrations of up to 200 μM, we showed herein that SkD did not exert any apoptotic or necrotic activities in vitro on lymphoblastic cells. However, an antiproliferative effect was evident at concentrations higher than 45. nM. SkD was inefficient at inhibiting heme biomineralization and the new permeability pathways induced by the parasite in the host erythrocyte membrane. With respect to Plasmodium falciparum erythrocytic stages, SkD was almost inactive on earlier and later parasite stages, but potently active at the 30th h of parasite cycle when DNA replicates in mature trophozoites. In vitro combination studies with conventional antimalarial drugs showed that SkD synergizes with atovaquone (ATO). The activity of ATO on the Plasmodium mitochondrial membrane potential was enhanced by SkD, which on its own had a poor effect on this cellular parameter. © 2012 Elsevier Inc. |
| Address |
UMR152 IRD-UPS, Institut de Recherche pour le Développement (IRD), Universidad Peruana Cayetano Heredia (UPCH), Lima, Peru |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
00144894 (Issn) |
ISBN |
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| Notes |
Export Date: 24 April 2012; Source: Scopus; Coden: Expaa; doi: 10.1016/j.exppara.2012.02.013; Language of Original Document: English; Correspondence Address: Deharo, E.; UMR152 IRD-UPS, Faculté de Pharmacie, 35 chemin des maraîchers, 31062 Toulouse cedex 9, France; email: ericdeharo@gmail.com |
Approved |
no |
| Call Number |
EcoFoG @ webmaster @ |
Serial |
395 |
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| Author |
Delph, L.F.; Arntz, A.M.; Scotti-Saintagne, C.; Scotti, I. |
| Title |
The Genomic Architecture of Sexual Dimorphism in the Dioecious Plant Silene Latifolia |
Type |
Journal Article |
| Year |
2010 |
Publication |
Evolution |
Abbreviated Journal |
Evolution |
| Volume |
64 |
Issue |
10 |
Pages |
2873-2886 |
| Keywords |
Artificial selection; genetic correlations; linkage map; sex-specific expression; sexual conflict |
| Abstract |
Evaluating the genetic architecture of sexual dimorphism can aid our understanding of the extent to which shared genetic control of trait variation versus sex-specific control impacts the evolutionary dynamics of phenotypic change within each sex. We performed a QTL analysis on Silene latifolia to evaluate the contribution of sex-specific QTL to phenotypic variation in 46 traits, whether traits involved in trade-offs had colocalized QTL, and whether the distribution of sex-specific loci can explain differences between the sexes in their variance/covariance matrices. We used a backcross generation derived from two artificial-selection lines. We found that sex-specific QTL explained a significantly greater percent of the variation in sexually dimorphic traits than loci expressed in both sexes. Genetically correlated traits often had colocalized QTL, whose signs were in the expected direction. Lastly, traits with different genetic correlations within the sexes displayed a disproportionately high number of sex-specific QTL, and more QTL co-occurred in males than females, suggesting greater trait integration. These results show that sex differences in QTL patterns are congruent with theory on the resolution of sexual conflict and differences based on G-matrix results. They also suggest that trade-offs and trait integration are likely to affect males more than females. |
| Address |
[Delph, Lynda F.; Arntz, A. Michele; Scotti, Ivan] Indiana Univ, Dept Biol, Bloomington, IN 47405 USA, Email: ldelph@indiana.edu |
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| Publisher |
WILEY-BLACKWELL PUBLISHING, INC |
Place of Publication |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0014-3820 |
ISBN |
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Medium |
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Conference |
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| Notes |
ISI:000282573800006 |
Approved |
no |
| Call Number |
EcoFoG @ eric.marcon @ |
Serial |
31 |
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| Author |
Vendramin, G.G.; Fady, B.; Gonzalez-Martinez, S.C.; Hu, F.S.; Scotti, I.; Sebastiani, F.; Soto, A.; Petit, R.J. |
| Title |
Genetically depauperate but widespread: The case of an emblematic mediterranean pine |
Type |
Journal Article |
| Year |
2008 |
Publication |
Evolution |
Abbreviated Journal |
Evolution |
| Volume |
62 |
Issue |
3 |
Pages |
680-688 |
| Keywords |
chloroplast microsatellites; conservation genetics; diversity depletion; human impact; Pinus pinea |
| Abstract |
Genetic variation is generally considered a prerequisite for adaptation to new environmental conditions. Thus the discovery of genetically depauperate but geographically widespread species is unexpected. We used 12 paternally inherited chloroplast microsatellites to estimate population genetic variation across the full range of an emblematic circum-Mediterranean conifer, stone pine (Pinus pinea L.). The same chloroplast DNA haplotype is fixed in nearly all of the 34 investigated populations. Such a low level of variation is consistent with a previous report of very low levels of diversity at nuclear loci in this species. Stone pine appears to have passed through a severe and prolonged demographic bottleneck, followed by subsequent natural- and human-mediated dispersal across the Mediterranean Basin. No other abundant and widespread plant species has as little genetic diversity as P. pinea at both chloroplast and nuclear markers. However, the species harbors a nonnegligible amount of variation at adaptive traits. Thus a causal relationship between genetic diversity, as measured by marker loci, and the evolutionary precariousness of a species, cannot be taken for granted. |
| Address |
[Vendramin, Giovanni G.] Ist Genet Vegetale, Sez Firenze, Florence, Italy, Email: petit@pierroton.inra.fr |
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| Publisher |
BLACKWELL PUBLISHING |
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Summary Language |
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Series Issue |
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Edition |
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| ISSN |
0014-3820 |
ISBN |
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Conference |
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| Notes |
ISI:000253758600016 |
Approved |
no |
| Call Number |
EcoFoG @ eric.marcon @ |
Serial |
141 |
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| Author |
Scotti, I.; Delph, L.F. |
| Title |
Selective trade-offs and sex-chromosome evolution in Silene latifolia |
Type |
Journal Article |
| Year |
2006 |
Publication |
Evolution |
Abbreviated Journal |
Evolution |
| Volume |
60 |
Issue |
9 |
Pages |
1793-1800 |
| Keywords |
antagonistic genes; linkage map; quantitative trait loci; sex-specific expression; Y chromosome |
| Abstract |
Alleles of sexually antagonistic genes (i.e., genes with alleles affecting fitness in opposite directions in the two sexes) can avoid expression in the sex to which they are detrimental via two processes: they are subsumed into the nonrecombining, sex-determining portion of the sex chromosomes or they evolve sex-limited expression. The former is considered more likely and leads to Y-chromosome degeneration. We mapped quantitative trait loci of major effect for sexually dimorphic traits of Silene latifolia to the recombining portions of the sex chromosomes and found them to exhibit sex-specific expression, with the Y chromosome in males controlling a relatively larger proportion of genetic variance than the X in females and the average autosome. Both reproductive and ecophysiological traits map to the recombining region of the sex chromosomes. We argue that genetic correlations among traits maintain recombination and polymorphism for these genes because of balancing selection in males, whereas sex-limited expression represses detrimental alleles in females. Our data suggest that the Y chromosome of S. latifolia plays a major role in the control of key metabolic activities beyond reproductive functions. |
| Address |
Indiana Univ, Dept Biol, Bloomington, IN 47405 USA, Email: ivan.scotti@kourou.cirad.fr |
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| Publisher |
SOC STUDY EVOLUTION |
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Series Issue |
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Edition |
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| ISSN |
0014-3820 |
ISBN |
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Expedition |
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Conference |
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| Notes |
ISI:000241226800005 |
Approved |
no |
| Call Number |
EcoFoG @ eric.marcon @ |
Serial |
174 |
| Permanent link to this record |
