Molecular biodiversity in the moss Leptodon smithii (Neckeraceae) in relation to habitat disturbance and fragmentation

Spagnuolo, Valeria; Muscariello, Livio; Terracciano, Stefano; Giordano, Simonetta

doi:10.1007/s10265-007-0097-9

Cited by 29 publications

(18 citation statements)

References 50 publications

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“…The authors found that the detected genetic variability is higher in extraurban than in urban sites and the level of genetic variation depends on population size -large populations had a higher level of polymorphism than small ones. Moreover, they found that undisturbed sites maintain a high level of intraspecific variation and ancient biodiversity, even if populations are small (Spagnuolo et al, 2007). Similar results, inferred from microsatellite markers, were reported by Wilson & Provan (2003) for the moss Polytrichum commune Hedw.…”

Section: Genetic Variation and Habitat Disturbancesupporting

confidence: 63%

“…Similarly, a deleterious effect of habitat disturbance on the level of genetic diversity was observed in the moss Leptodon smithii (Hedw.) Weber & Mohr (Spagnuolo et al, 2007). The authors found that the detected genetic variability is higher in extraurban than in urban sites and the level of genetic variation depends on population size -large populations had a higher level of polymorphism than small ones.…”

Section: Genetic Variation and Habitat Disturbancementioning

confidence: 96%

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Genetic variation in the liverwortBazzania trilobatainferred from ISSR markers

Buczkowska

Sawicki

Szczecińska

et al. 2010

Journal of Bryology

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The distribution of Bazzania trilobata in Poland coincides with two parts of the natural distribution range of Norway spruce: the mountains of southern Poland and the northeastern lowlands. The occurrence of this species is connected with primeval forest communities and it was recognized as a relict of them. Genetic variation of 10 populations of B. trilobata from two different regions of Poland (lowlands and mountains) was studied in order to establish the genetic structure of this species and to compare the level of genetic variation within and among populations originating from primeval and managed forests. An analysis based on polymorphic inter-simple sequence repeat (ISSR) loci revealed a high level of total gene diversity in B. trilobata (H T 50.308). A higher amount of polymorphism was found among than within populations. Genetic variation of populations from the primary forest (Tatras and Białowieża National Park) was higher than for those originating from disturbed habitats. The Bayesian method showed consistent grouping of samples corresponding with populations, with the best grouping in 12 different clusters reflecting a geographic pattern. The geographic pattern of genetic differentiation was supported by a neighbour-joining (NJ) dendrogram based on genetic distances. All mountain populations were grouped together in one subcluster, but lowland populations were more differentiated and did not form one clear group.

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Section: Genetic Variation and Habitat Disturbancesupporting

confidence: 63%

Section: Genetic Variation and Habitat Disturbancementioning

confidence: 96%

Genetic variation in the liverwortBazzania trilobatainferred from ISSR markers

Buczkowska

Sawicki

Szczecińska

et al. 2010

Journal of Bryology

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“…Narasimhan et al 2006;Padmesh et al 2006;Joshi & Dhawan 2007, Refoufi & Esnalut 2008Yao et al 2008;Cordeiro et al 2008;Choudhury et al 2008;), but there is very few studies on cryptogams incl. bryophytes (e. g. van der Velde & Bijlsma 2003;Werner & Guerra 2004;Sabovljević et al 2005Sabovljević et al , 2006Spagnuolo et al 2007Spagnuolo et al , 2008Grundmann et al 2008, 2009). …”

Section: Introductionmentioning

confidence: 99%

Genetic diversity of the relict moss Rhytidium rugosum (Hypnales) in Europe inferred from the ITS region (nrDNA)

Sabovljević

Frahm

2010

Biologia

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Post-glacial survival, potential migration routes, genetic diversity and phylogeography of the boreal moss species Rhytidium rugosum have been studied. This species is considered to be one of glacial relics of the wide but scattered Holarctic range. According to molecular data sampling from the selected European, American and Asian populations high genetic diversity of this species is present, even if this species is mostly sterile and produced sex organs extremely rarely and spread mostly asexually. Analysing the internal transcribed spacer (ITS) of the nuclear ribosomal DNA, it can be concluded that the populations of this species survived glaciations in various places in Europe and settled and re-settled present range space in various times from various refuges.

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“…ISSR amplifications of single ramets were performed following Spagnuolo et al (2007b). The primers used for ISSR analysis are listed in Table 2.…”

Section: Dna Extraction Amplification and Sequencingmentioning

confidence: 99%

Taxonomy of theHypnum cupressiformecomplex in Italy based on ITS andtrnL sequences and ISSR markers

Spagnuolo¹,

Terracciano²,

Cobianchi³

et al. 2008

Journal of Bryology

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Bryophytes have sometimes ambiguous morphological diagnostic features, so molecular markers can prove a useful tool in systematics, even more in a well known morphologically variable moss such as Hypnum cupressiforme. This paper focuses on genetic diversity in the H. cupressiforme complex inferred by ISSR markers and ITS and trnL sequences. Shoots from nine Italian populations of H. cupressiforme and from five other species included in the complex were analysed. Sequence divergence among the analysed species is very low, with the exception of Hypnum jutlandicum. The neighbour joining tree based on ISSR data shows that all the H. cupressiforme samples do not merge into a distinct cluster, but spread on the whole dendrogram. Molecular variance is partitioned more within-than between-species. Therefore, the genetic variation detected by ISSR at intra-and inter-specific level appears to be, to a large extent, the result of the individual variation, suggesting that the polymorphism detected appears poorly informative at a taxonomic level. Our results suggest that morphological variation of the H. cupressiforme complex does not always correspond to genetic diversity, and highlight a major molecular divergence of H. jutlandicum within the complex.

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Molecular biodiversity in the moss Leptodon smithii (Neckeraceae) in relation to habitat disturbance and fragmentation

Cited by 29 publications

References 50 publications

Genetic variation in the liverwortBazzania trilobatainferred from ISSR markers

Genetic variation in the liverwortBazzania trilobatainferred from ISSR markers

Genetic diversity of the relict moss Rhytidium rugosum (Hypnales) in Europe inferred from the ITS region (nrDNA)

Taxonomy of theHypnum cupressiformecomplex in Italy based on ITS andtrnL sequences and ISSR markers

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