Genetic structure and demographic history of the endangered tree species Dysoxylum malabaricum (Meliaceae) in Western Ghats, India: implications for conservation in a biodiversity hotspot.
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It is suggested that population divergence occurred before the last glacial maximum, and the implications of this results, in particular the presence of a clear pattern of historical genetic subdivision, on conservation policies are discussed.Abstract:
The impact of fragmentation by human activities on genetic diversity of forest trees is an important concern in forest conservation, especially in tropical forests. Dysoxylummalabaricum (white ceda ...read more
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The population demography of Betula maximowicziana, a cool-temperate tree species in Japan, in relation to the last glacial period: its admixture-like genetic structure is the result of simple population splitting not admixing.
TL;DR: The results of the ABC together with the model‐based maps of reconstructed past species distribution and palaeoecological data suggested that the modern genetic structure of B. maximowicziana originated prior to the last glacial maximum (LGM) and that some populations survived in the northern range even during the LGM.
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Possible clues for camptothecin biosynthesis from the metabolites in camptothecin-producing plants.
TL;DR: The aim of this review is to appraise the literature available to date for CPT distribution and the phytochemistry of these CPT-producing plants and suggest the probability that the formation of the central intermediate for C PT biosynthesis has multiple origins.
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Population structure and genetic diversity of the perennial medicinal shrub Plumbago.
TL;DR: High levels of genetic diversity and significantly high genetic differentiation were revealed by both the markers among all studied populations.
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Population structure and historical demography of Dipteronia dyeriana (Sapindaceae), an extremely narrow palaeoendemic plant from China: implications for conservation in a biodiversity hot spot
TL;DR: It was found that D. dyeriana had a mixed pattern of moderate genetic diversity and high inbreeding, and recent habitat fragmentation has led to a reduction of population connectivity and increased genetic differentiation by ongoing genetic drift in isolated populations, possibly owing to decreased population size in recent dozen years.
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Integrating genetic factors into management of tropical Asian production forests: A review of current knowledge
TL;DR: The impacts of practices including logging intensity, minimum diameter cutting limits and spatial patterns of tree removal with regards to biological parameters such as effective breeding units, size at reproductive maturity, fine-scale spatial genetic structure and the importance of general flowering in producing diverse seed are examined.
References
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Inference of population structure using multilocus genotype data
TL;DR: Pritch et al. as discussed by the authors proposed a model-based clustering method for using multilocus genotype data to infer population structure and assign individuals to populations, which can be applied to most of the commonly used genetic markers, provided that they are not closely linked.
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Biodiversity hotspots for conservation priorities
Norman Myers,Russell A. Mittermeier,Cristina G. Mittermeier,Gustavo A. B. da Fonseca,Jennifer Kent +4 more
TL;DR: A ‘silver bullet’ strategy on the part of conservation planners, focusing on ‘biodiversity hotspots’ where exceptional concentrations of endemic species are undergoing exceptional loss of habitat, is proposed.
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Detecting the number of clusters of individuals using the software STRUCTURE: a simulation study.
TL;DR: It is found that in most cases the estimated ‘log probability of data’ does not provide a correct estimation of the number of clusters, K, and using an ad hoc statistic ΔK based on the rate of change in the log probability between successive K values, structure accurately detects the uppermost hierarchical level of structure for the scenarios the authors tested.
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Estimating F-statistics for the analysis of population structure.
Bruce S. Weir,C. Clark Cockerham +1 more
TL;DR: The purpose of this discussion is to offer some unity to various estimation formulae and to point out that correlations of genes in structured populations, with which F-statistics are concerned, are expressed very conveniently with a set of parameters treated by Cockerham (1 969, 1973).
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