Fine-scale Genetic Structure of Eucalyptus globulus ssp. globulus Forest Revealed by RAPDs

Skabo, Stuart; Vaillancourt, René E.; Potts, BM

doi:10.1071/bt97056

Cited by 40 publications

(44 citation statements)

References 37 publications

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“…FPC concentrations are highly heritable in Eucalyptus (Andrew et al 2005), and Andrew et al (2007) showed in E. melliodora that strong spatial autocorrelation in FPC concentrations overlaid a highly congruent spatial structure in genetic variance. The strength and scale of autocorrelation observed in this study for FPCs are comparable to those in E. melliodora and those for genetic markers in Tasmanian E. globulus (Skabo et al 1998), and are probably largely a product of isolation by distance (Heywood 1991). In addition to endogenous genetic factors, however, it is also conceivable that exogenous factors have contributed to the observed spatial structure, either through geographical heterogeneity in natural selection (Endler 1977, Linhart andGrant 1996) or through environmental influences on phenotypes (Gram andSork 2001, Brenes-Arguedas andColey 2005).…”

Section: Discussionsupporting

confidence: 62%

Palatability mapping: a koala's eye view of spatial variation in habitat quality

Moore

Lawler

Wallis

et al. 2010

Ecology

113

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Abstract. Ecologists trying to understand the value of habitat to animals must first describe the value of resources contained in the habitat to animals and, second, they must describe spatial variation in resource quality at a resolution relevant to individual animal foraging. We addressed these issues in a study of koalas (Phascolarctos cinereus) in a Eucalyptus woodland. We measured beneficial and deterrent chemical characteristics as well as the palatability of trees using a near-infrared spectroscopic model based on direct feeding experiments. Tree use by koalas was influenced by tree size and foliar quality but was also context-dependent: trees were more likely to be visited if they were surrounded by small, unpalatable trees or by large, palatable trees. Spatial autocorrelation analysis and several mapping approaches demonstrated that foliar quality is spatially structured in the woodland at a scale relevant to foraging decisions by koalas and that the spatial structure is an important component of habitat quality.

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Section: Discussionsupporting

confidence: 62%

Palatability mapping: a koala's eye view of spatial variation in habitat quality

Moore

Lawler

Wallis

et al. 2010

Ecology

113

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“…1). In most cases, trees sampled were at least 100 m apart to avoid sampling closely related trees (see Skabo et al 1998). Twenty-eight trees from the Jeeralang provenance were sampled, as were 20-37 trees each of "core" ssp.…”

Section: Plant Materialsmentioning

confidence: 99%

Microsatellite and morphological analysis ofEucalyptus globuluspopulations

Jones¹,

Steane²,

Potts³

et al. 2002

Can. J. For. Res.

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Eucalyptus globulus Labill. is native to southeastern Australia and is the most important temperate hardwood plantation species in the world. It consists of four subspecies that are morphologically and geographically distinct but that are linked by morphologically and geographically intermediate populations. The Jeeralang provenance, an intermediate population from southeastern Victoria, is an important source of seed for plantations and genetic material for breeding programs because of its superior growth and wood density. To determine the genetic affinities of this provenance, 154 trees from three subspecies and the Jeeralang provenance were sampled. Analysis of 12 morphological characters verified that the Jeeralang provenance is intermediate between subspecies bicostata (Maiden, Blakely, & J. Simm.) Kirkpatr., globulus and pseudoglobulus (Naudin ex Maiden) Kirkpatr., with individuals having closest affinities to either ssp. globulus or ssp. bicostata. However, eight microsatellite loci showed that the Jeeralang provenance has greater affinities to Victorian ssp. globulus to which it is geographically closest. In contrast, Tasmanian and Victorian ssp. globulus are morphologically similar yet appear to be distinct at the molecular level. This study emphasizes the importance of using traits that are unlikely to be influenced by selection when determining the origin and affinities of populations.Résumé : Eucalyptus globulus Labill. est une espèce indigène du sud-est de l'Australie. C'est la plus importante espèce feuillue en plantation au monde. L'espèce est constituée de quatre sous-espèces qui sont morphologiquement et géographiquement distinctes. Cependant, ces sous-espèces sont liées entre elles par des populations morphologiquement et géographiquement intermédiaires. La provenance Jeeralang, une population intermédiaire de la région sud-est de Victoria, représente une source importante de semences pour l'établissement de plantations, en plus de fournir du maté-riel génétique pour les programmes d'amélioration, en raison de sa supériorité pour la croissance et la densité du bois. Afin de déterminer les affinités génétiques de cette provenance, 154 arbres représentatifs de trois sous-espèces et de la provenance Jeeralang ont été échantillonnés. La caractérisation de 12 caractères morphologiques a permis de confirmer que la provenance Jeeralang était intermédiaire entre sous-espèces bicostata (Maiden, Blakely & J. Simm.) Kirkpatr., globulus et pseudoglobulus (Naudin ex Maiden) Kirkpatr. Les individus de cette provenance avaient plus d'affinités avec ssp. globulus et ssp. bicostata. Cependant, l'analyse de huit loci de microsatellites a révélé que la provenance Jeeralang avait le plus d'affinités avec la sous-espèce globulus de la région de Victoria, dont elle est géographiquement la plus rapprochée. À l'opposé, les individus de la sous-espèce globulus des régions de Tasmanie et de Victoria étaient morphologiquement similaires même s'ils étaient distincts à l'échelle moléculaire. Cette étude souligne ...

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“…These techniques have been applied to wild species to answer specific questions, mainly regarding the crossing system (Hayward and Hamilton, 1997). Some studies based on microsatellites have been employed in the study of natural populations (Collevatti et al, 2001;Zucchi et al, 2003) but most of the studies are performed with RAPD markers in plants (Chalmers et al, 1992;Wolf andRijn, 1993, Bucci andMenozzi, 1995;Yeh et al, 1995;Maguire and Sedgley 1997;Gillies et al, 1997, Palácios andGonzález-Candelas, 1997;Gallois et al, 1998, Cattan-Toupance et al, 1998, Skabo et al, 1998, and in other organisms (Peever andMilgroom, 1994, Lou et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Genetic structure of natural Eugenia dysenterica DC (Myrtaceae) populations in northeastern Goiás, Brazil, accessed by morphological traits and RAPD markers

Trindade

Chaves

2005

Genet. Mol. Biol.

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The Brazilian Cerrado (Savannah) is a biome with great biodiversity. Many of the species found in this biome have unlimited economic potential and are used by the local population for various purposes. With the opening of the agricultural frontiers in this region, much of the native flora has been replaced by extensive areas of monocultures. Thirteen populations of the Eugenia dysenterica DC species were sampled in the northeast of the state of Goiás, Brazil, to analyze their genetic structure. Morphological traits were measured for all the progeny obtained and some of them were analyzed by using RAPD markers. The natural populations of the species showed high levels of variability for the morphological traits. The phenotypic, genotypic and genetic variabilities as structured in these populations were highly significant among populations, although most of the variability was detected within populations. The phenotypic and genetic variabilities were structured spatially as shown by the positive and highly significant correlation coefficients between the phenotypic and genetic distance matrixes and the geographic distance matrix. The ideal conservation strategy for the species in the region requires sampling of a high number of individuals of each population and also a significant number of populations to ensure suitable effective population sizes.

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Fine-scale Genetic Structure of Eucalyptus globulus ssp. globulus Forest Revealed by RAPDs

Cited by 40 publications

References 37 publications

Palatability mapping: a koala's eye view of spatial variation in habitat quality

Palatability mapping: a koala's eye view of spatial variation in habitat quality

Microsatellite and morphological analysis ofEucalyptus globuluspopulations

Genetic structure of natural Eugenia dysenterica DC (Myrtaceae) populations in northeastern Goiás, Brazil, accessed by morphological traits and RAPD markers

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