Genetic diversity of Dalbergia monticola (Fabaceae) an endangered tree species in the fragmented oriental forest of Madagascar

Andrianoelina, Olivarimbola; Rakotondraoelina, Hery; Ramamonjisoa, Lolona; Maley, Jean; Danthu, Pascal; Bouvet, Jean‐Marc

doi:10.1007/978-1-4020-5208-8_4

Cited by 15 publications

(18 citation statements)

References 36 publications

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“…Interestingly, the other half of the total variation has shown variable patterns with three markers used. Andrianoelina et al (2006) analyzed the genetic variation and related parameters for D. monticola, another woody legume and have found similar results as more than 80 % variation was present within the individuals of the populations. Likewise, the extent of genetic variation present among populations within the groups (16 %) was nearly one-third of that present among populations (36 %) (Pither et al 2003;Awasthi et al 2004).…”

Section: Discussionmentioning

confidence: 64%

Genetic diversity and population structure of Butea monosperma (Lam.) Taub.- a potential medicinal legume tree

Vashishtha

Jehan

2013

Physiol Mol Biol Plants

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Three molecular marker systems, Random Amplified Polymorphic DNA (RAPD), Inter-Simple Sequence Repeats (ISSR) and Sequence-Related Amplified Polymorphism (SRAP) were employed to investigate the genetic structure and diversity among the 14 natural populations of Butea monosperma collected from different geographical regions of India. Detected by 17 RAPD, 15 ISSR and 11 SRAP primer combinations, the proportions of polymorphic bands were 84.2 %, 77.2 % and 91.9 %, respectively, and the mean Nei's genetic distances among the populations were 0.13, 0.10 and 0.13, respectively. Partitioning of genetic variability by Analysis of molecular variance (AMOVA) revealed that the high genetic diversity was distributed within the populations. AMOVA also revealed that the coefficient of gene differentiation among populations based on FST was very high irrespective of markers used. The overall gene flow among populations (Nm) was very low. Cophenetic correlation coefficients of Nei's distance values and clustering pattern by Mental test were statistically significant for all three marker systems used but poor fit for ISSR data than for RAPD, SRAP and combined data set of all three markers. For all markers, a high similarity in dendrogram topologies was obtained, although some differences were observed with ISSR. The dendrogram obtained by RAPD, SRAP and combined data set of all three markers reflect relationship of most of the populations according to their geographic distribution.

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Section: Discussionmentioning

confidence: 64%

Genetic diversity and population structure of Butea monosperma (Lam.) Taub.- a potential medicinal legume tree

Vashishtha

Jehan

2013

Physiol Mol Biol Plants

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“…Genetic distance (below diagonal) and geographic distance (above diagonal) between populations of Dalbergia sissoo. sity are 51%, 0.223 and 0.15, respectively (Andrianoelina et al, 2006). In D. odorifera, PPB, Shannon diversity index and Nei's genetic diversity are 54.55%, 0.3137 and 0.2137, respectively, at the species level, and at the population level, the average PPB, Shannon diversity index and Nei's genetic diversity are 40.9%, 0.2048 and 0.1353, respectively (Yang et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity and differentiation in Dalbergia sissoo (Fabaceae) as revealed by RAPD

By¹,

Shi²,

Zy³

et al. 2010

Genet. Mol. Res.

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Dalbergia sissoo, a wind-dispersed tropical tree, is one of the most preferred timber tree species of South Asia. Genetic diversity and differentiation among natural populations of D. sissoo were examined for the first time. We found a relatively high level of genetic diversity in D. sissoo, both at the species level (percentage of polymorphic bands = 89.11%; H = 0.2730; I = 0.4180) and the population level (percentage of polymorphic bands = 68.7%; H = 0.239; I = 0.358), along with a relatively low degree of differentiation among populations (GST = 0.1311; AMOVA = 14.69%). Strong gene flow among populations was estimated, N m = 3.3125. The Mantel test suggested that genetic distances between populations were weakly correlated with geographic distances (R = 0.3702, P = 0.1236). The high level of genetic diversity, low degree of differentiation, strong gene flow, and weak correlation between genetic and geographic distances can be explained by its biological character and widespread planting. This information will be useful for the introduction, conservation and further studies of D. sissoo and related species.

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“…Because RAPD markers are sometimes criticized for their low reproducibility, AFLPs have become the preferred markers in many studies because of higher reliability and precision. However, RAPDs have been applied satisfactorily both to assess genetic variability of endemic and/or relict species (e.g., Pye and Gadek, 2004; Renau‐Morata et al, 2005; Andrianoelina et al, 2006; Romeiras et al, 2007) and to ascertain the Pleistocene population dynamics of some Pyrenean, arctic, and alpine plants (Gabrielsen et al, 1997; Bauert et al, 1998; Tollefsrud et al, 1998; Segarra‐Moragues and Catalán, 2003). Moreover, Kjølner et al (2004) addressed the congruence of the results obtained with RAPDs and AFLPs, concluding that RAPDs might be used as reliable method in small, low‐tech laboratories.…”

Section: Discussionmentioning

confidence: 99%

Genetic structure and diversity in Ramonda myconi (Gesneriaceae): effects of historical climate change on a preglacial relict species

Dubreuil

Riba

Mayol

2008

American J of Botany

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The importance of the Mediterranean Basin as a long-term reservoir of biological diversity has been widely recognized, although much less effort has been devoted to understanding processes that allow species to persist in this area. Ramonda myconi (Gesneriaceae) is a Tertiary relict plant species restricted to the NE Iberian Peninsula. We used RAPD and chloroplast markers to assess the patterns of genetic structure in eight mountain regions covering almost the full species range, to identify the main historical processes that have shaped its current distribution and to infer the number and location of putative glacial refugia. While no cpDNA variation was detected, the species had relatively high levels of RAPD variation. Maximum levels of diversity were found within populations (71%), but there was also a significant differentiation between geographical regions (20%) and among populations within regions (9%). A spatial AMOVA identified three main groups of populations, corresponding to previously recognized centers of endemism and species richness. In addition, we found a marked geographical pattern of decreasing genetic diversity and increasing population differentiation from west to east. Our results support a complex phylogeographic scenario in the Iberian Peninsula of "refugia-within-refugia" and suggest that the higher diversity observed in western regions might be associated with prolonged and more stable climatic conditions in this area during the Quaternary.

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Genetic diversity of Dalbergia monticola (Fabaceae) an endangered tree species in the fragmented oriental forest of Madagascar

Cited by 15 publications

References 36 publications

Genetic diversity and population structure of Butea monosperma (Lam.) Taub.- a potential medicinal legume tree

Genetic diversity and population structure of Butea monosperma (Lam.) Taub.- a potential medicinal legume tree

Genetic diversity and differentiation in Dalbergia sissoo (Fabaceae) as revealed by RAPD

Genetic structure and diversity in Ramonda myconi (Gesneriaceae): effects of historical climate change on a preglacial relict species

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