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Titolo:
Spatial and temporal distribution of chloroplast DNA polymorphism in a tropical tree species
Autore:
Caron, H; Dumas, S; Marque, G; Messier, C; Bandou, E; Petit, RJ; Kremer, A;
Indirizzi:
INRA, Stn Rech Forestieres, Kourou 97387, Guyana INRA Kourou Guyana 97387 NRA, Stn Rech Forestieres, Kourou 97387, Guyana INRA, Stn Rech Forestieres, Lab Genet Arbres Forestiers, F-33611 Gazinet, France INRA Gazinet France F-33611 t Arbres Forestiers, F-33611 Gazinet, France
Titolo Testata:
MOLECULAR ECOLOGY
fascicolo: 8, volume: 9, anno: 2000,
pagine: 1089 - 1098
SICI:
0962-1083(200008)9:8<1089:SATDOC>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
QUERCUS-ROBUR L; GENETIC-STRUCTURE; UNIVERSAL PRIMERS; NONCODING REGIONS; MARKERS; FOREST; PLANTS; SET; DIFFERENTIATION; AUTOCORRELATION;
Keywords:
chloroplast DNA; Dicorynia guianensis; genetic diversity; Guiana; seed flow; tropical rain forest;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Caron, H INRA, Stn Rech Forestieres, Campus Agr,BP 709, Kourou 97387, Guyana INRA Campus Agr,BP 709 Kourou Guyana 97387 Kourou 97387, Guyana
Citazione:
H. Caron et al., "Spatial and temporal distribution of chloroplast DNA polymorphism in a tropical tree species", MOL ECOL, 9(8), 2000, pp. 1089-1098

Abstract

The level and the spatial organization of chloroplast DNA polymorphism were investigated in Dicorynia guianensis Hamshoff (Caesalpiniaceae) at different spatial and temporal scales. D. guianensis is a canopy tree of the rainforest that is distributed throughout the Guiana plateau in small aggregates. Twelve different haplotypes were identified using restriction analysis of polymerase chain reaction (PCR) amplified fragments of the chloroplast genome. When populations from different areas of French Guiana were compared, a clear geographical pattern of haplotype frequencies was identified along the Atlantic coast. This pattern is most likely the result of the restriction-expansion dynamics of the tropical forest during the Quaternary At thelocal level, D. guianensis was characterized by a high level of within population diversity. Maintenance of within population diversity results from the dynamics of the aggregates; stochastic demography associated with the turnover of aggregates generates genetic differentiation among them. At the stand level, a strong spatial aggregation of haplotypes persisted from the adult to the seedling cohort indicating limited seed flow There was also a strong difference in levels of diversity between the cohorts which suggested that recruitment over several years is needed in order to maintain genetic diversity during regeneration.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 23:40:32