Targeting genetic resource conservation in widespread species: a case study of Cedrela odorata L.

Cavers, S., Navarro, C. and Lowe, AJ (2004) Targeting genetic resource conservation in widespread species: a case study of Cedrela odorata L.. Forest Ecology And Management, 197 1-3: 285-294. doi:10.1016/j.foreco.2004.05.019


Author Cavers, S.
Navarro, C.
Lowe, AJ
Title Targeting genetic resource conservation in widespread species: a case study of Cedrela odorata L.
Journal name Forest Ecology And Management   Check publisher's open access policy
ISSN 0378-1127
Publication date 2004-08
Sub-type Article (original research)
DOI 10.1016/j.foreco.2004.05.019
Volume 197
Issue 1-3
Start page 285
End page 294
Total pages 10
Place of publication Netherlands
Publisher Elsevier BV
Collection year 2004
Language eng
Subject C1
270203 Population and Ecological Genetics
620301 Native forests
0705 Forestry Sciences
Abstract Conservation of genetic resources is a recognised necessity for the long term maintenance of evolutionary potential. Effective assessment and implementation Strategies are required to permit rapid evaluation and protection of resources. Here we use information from the chloroplast, total genome and quantitative characters assayed across wide-ranging populations to assess genetic resources in a Neotropical tree, Cedrela odorata. A major differentiation identified for organelle, total genomic and quantitative variation was found to coincide with an environmental gradient across Costa Rica. However, a major evolutionary divergence between the Yucatan region and Honduras/Nicaragua identified within the chloroplast genome was not differentiated using quantitative characters. Based on these and other results, a three-tiered conservation genetic prioritisation process is recommended. In order of importance, and where information is available, conservation units should be defined using quantitative (expressed genes), nuclear (genetic connectivity) and organellar (evolutionary) measures. Where possible, information from range wide and local scale studies should be combined and emphasis should be placed on coincidental disjunctions for two or more measures. However, if only rapid assessments of diversity are possible, then assessment of organelle variation provides the most cautious assessment of genetic resources, at least for C. odorata, and can be used to propose initial conservation units. When considering effective implementation of genetic resource management strategies a final tier should be considered, that of landuse/geopolitical divisions. (C) 2004 Elsevier B.V. All rights reserved.
Keyword Forestry
Conservation Genetics
Cedrela Odorata
Genetic Differentiation
Quantitative Variation
Chloroplast Dna
Argan Tree
Santa-cruz
Costa-rica
Units
Diversity
Differentiation
Phylogeography
Populations
Markers
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2005 Higher Education Research Data Collection
School of Biological Sciences Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 19 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 15 Aug 2007, 03:07:55 EST