Rosabelle Samuel
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View article: TRITROPHIC ASSOCIATIONS OF APHIDOPHAGOUS HOVER FLIES MELANOSTOMA, PARAGUS AND SPHAEROPHORIA SPECIES (SYRPHINAE: SYRPHIDAE: DIPTERA) IN DIFFERENT STATES AND TERRITORIES OF INDIA
TRITROPHIC ASSOCIATIONS OF APHIDOPHAGOUS HOVER FLIES MELANOSTOMA, PARAGUS AND SPHAEROPHORIA SPECIES (SYRPHINAE: SYRPHIDAE: DIPTERA) IN DIFFERENT STATES AND TERRITORIES OF INDIA Open
This article examines the tri-trophic interactions involving hover flies that prey on aphids. Melanostoma orientale (Wiedemann) and Melanostoma univittatum (Wiedemann) consume 9 and 3 aphid species, respectively. All Paragus Latreille spec…
View article: Taxonomy of the Nicotiana megalosiphon species complex (Solanaceae; Nicotiana section Suaveolentes): analyses of RADseq data identifies a new cryptic species
Taxonomy of the Nicotiana megalosiphon species complex (Solanaceae; Nicotiana section Suaveolentes): analyses of RADseq data identifies a new cryptic species Open
The Nicotiana megalosiphon Van Heurck & Müll.Arg. species complex has been shown to be composed of several morphologically cryptic species similar to N. simulans N.T.Burb. Using phylogenetic and population genetic approaches (maximum likel…
View article: Recent speciation and adaptation to aridity in the ecologically diverse Pilbara region of Australia enabled the native tobaccos ( <i>Nicotiana</i> ; Solanaceae) to colonize all Australian deserts
Recent speciation and adaptation to aridity in the ecologically diverse Pilbara region of Australia enabled the native tobaccos ( <i>Nicotiana</i> ; Solanaceae) to colonize all Australian deserts Open
Over the last 6 million years, the arid Australian Eremaean Zone (EZ) has remained as dry as it is today. A widely accepted hypothesis suggests that the flora and fauna of arid regions were more broadly distributed before aridification beg…
View article: Genetic diversity and population structure of Piper nigrum (black pepper) accessions based on next-generation SNP markers
Genetic diversity and population structure of Piper nigrum (black pepper) accessions based on next-generation SNP markers Open
Despite the economic importance of Piper nigrum (black pepper), a highly valued crop worldwide, development and utilization of genomic resources have remained limited, with diversity assessments often relying on only a few samples or DNA m…
View article: Recent speciation and adaptation to aridity in the ecologically diverse Pilbara region of Australia enabled the native tobaccos (Nicotiana; Solanaceae) to colonize all Australian deserts
Recent speciation and adaptation to aridity in the ecologically diverse Pilbara region of Australia enabled the native tobaccos (Nicotiana; Solanaceae) to colonize all Australian deserts Open
For the last six million years, the arid Australian Eremaean Zone (EZ) has been as dry as today. A hypothesis, applied to arid regions worldwide, suggests that flora and fauna were more broadly distributed before aridification began. In Au…
View article: Nine new species of Australian Nicotiana (Solanaceae)
Nine new species of Australian Nicotiana (Solanaceae) Open
Nine new species in Australian Nicotiana section Suaveolentes are described, including N. clarksonii M.W.Chase & Christenh., N. erytheia M.W.Chase & Christenh., N. latifolia M.W.Chase & Christenh., N. latzii M.W.Chase, R.W.Jobson & Christe…
View article: <em>Piper</em> species (Piperaceae) of Sri Lanka and the diversity of the economically important <em>Piper nigrum</em> (black pepper): An overview of what has been done and what is yet to be achieved
<em>Piper</em> species (Piperaceae) of Sri Lanka and the diversity of the economically important <em>Piper nigrum</em> (black pepper): An overview of what has been done and what is yet to be achieved Open
Applying restriction site-associated DNA sequencing (RADseq) and target capture for Piper species from species-rich South America and India, Southeast Asia, and Africa will highlight the origin and evolution of Sri Lankan endemics, P. zeyl…
View article: Genomic insights into recent species divergence in <i>Nicotiana benthamiana</i> and natural variation in <i>Rdr1</i> gene controlling viral susceptibility
Genomic insights into recent species divergence in <i>Nicotiana benthamiana</i> and natural variation in <i>Rdr1</i> gene controlling viral susceptibility Open
SUMMARY One of the most commonly encountered and frequently cited laboratory organisms worldwide is classified taxonomically as Nicotiana benthamiana (Solanaceae), an accession of which, typically referred to as LAB, is renowned for its un…
View article: Variation of the <i>Rdr1</i> gene insertion in wild populations of <i>Nicotiana benthamiana</i> (Solanaceae) and insights into recent species divergence
Variation of the <i>Rdr1</i> gene insertion in wild populations of <i>Nicotiana benthamiana</i> (Solanaceae) and insights into recent species divergence Open
Summary One of the most commonly encountered and frequently cited laboratory organisms worldwide is classified taxonomically as Nicotiana benthamiana (Solanaceae), an accession of which, typically referred to as LAB, is renowned for its un…
View article: Down, then up: non-parallel genome size changes and a descending chromosome series in a recent radiation of the Australian allotetraploid plant species, <i>Nicotiana</i> section <i>Suaveolentes</i> (Solanaceae)
Down, then up: non-parallel genome size changes and a descending chromosome series in a recent radiation of the Australian allotetraploid plant species, <i>Nicotiana</i> section <i>Suaveolentes</i> (Solanaceae) Open
Background and Aims The extent to which genome size and chromosome numbers evolve in concert is little understood, particularly after polyploidy (whole-genome duplication), when a genome returns to a diploid-like condition (diploidization)…
View article: Molecular phylogeny and chromosomal evolution of endemic species of Sri Lankan Anacardiaceae
Molecular phylogeny and chromosomal evolution of endemic species of Sri Lankan Anacardiaceae Open
The Journal of the National Science Foundation of Sri Lanka publishes the results of research in all aspects of Science and Technology. The journal also has a website at http://www.nsf.gov.lk/. 2021 Impact Factor: 0.682The JNSF provides im…
View article: Molecular phylogeny helps to delimit <i>Plectranthus</i> <i>hadiensis</i> from its related morph occurring in Sri Lanka
Molecular phylogeny helps to delimit <i>Plectranthus</i> <i>hadiensis</i> from its related morph occurring in Sri Lanka Open
Plectranthus hadiensis is an important medicinal plant in Sri Lanka. It was considered a separate species, P. zeylanicus, endemic to the island until its inclusion, as P. hadiensis var. tomentosus, together with morphs from southern Africa…
View article: Molecular phylogenomics of the tribe Shoreeae (Dipterocarpaceae) using whole plastid genomes
Molecular phylogenomics of the tribe Shoreeae (Dipterocarpaceae) using whole plastid genomes Open
Background and Aims Phylogenetic relationships within tribe Shoreeae, containing the main elements of tropical forests in Southeast Asia, present a long-standing problem in the systematics of Dipterocarpaceae. Sequencing whole plastomes us…
View article: Plant DNA barcodes and assessment of phylogenetic community structure of a tropical mixed dipterocarp forest in Brunei Darussalam (Borneo)
Plant DNA barcodes and assessment of phylogenetic community structure of a tropical mixed dipterocarp forest in Brunei Darussalam (Borneo) Open
DNA barcoding is a fast and reliable tool to assess and monitor biodiversity and, via community phylogenetics, to investigate ecological and evolutionary processes that may be responsible for the community structure of forests. In this stu…
View article: Phylogenetic analyses of plastid DNA suggest a different interpretation of morphological evolution than those used as the basis for previous classifications of Dipterocarpaceae (Malvales)
Phylogenetic analyses of plastid DNA suggest a different interpretation of morphological evolution than those used as the basis for previous classifications of Dipterocarpaceae (Malvales) Open
Phylogenetic and molecular clock analyses were performed including all genera except one (Pseudomonotes) for the three subfamilies of Dipterocarpaceae. We also included representatives of Sarcolaenaceae and Cistaceae with Bixaceae as the u…
View article: Evaluating the occurrence and conservation statuses of Sri Lankan Orchids (Orchidaceae): Observations on newly recorded species and undocumented regions
Evaluating the occurrence and conservation statuses of Sri Lankan Orchids (Orchidaceae): Observations on newly recorded species and undocumented regions Open
Sri Lanka is a country with unique landscapes and positioning. Its land profile varies from coastal areas through lowland hills to central montane region, and the climatic zones governed by seasonal monsoons results in a significantly high…
View article: Universal multiplexable <i>matK</i> primers for DNA barcoding of angiosperms
Universal multiplexable <i>matK</i> primers for DNA barcoding of angiosperms Open
Premise of the study: PCR amplification of the matK barcoding region is often difficult when dealing with multiple angiosperm families. We developed a primer cocktail to amplify this region efficiently across angiosperm diversity. Methods …
View article: Phylogenetic relationships, diversification and expansion of chili peppers (<i>Capsicum</i>, Solanaceae)
Phylogenetic relationships, diversification and expansion of chili peppers (<i>Capsicum</i>, Solanaceae) Open
New insights are provided regarding interspecific relationships, character evolution, and geographical origin and expansion of Capsicum A clearly distinct early-diverging clade can be distinguished, centred in western-north-western South A…
View article: Sequencing of whole plastid genomes and nuclear ribosomal DNA of<i>Diospyros</i>species (Ebenaceae) endemic to New Caledonia: many species, little divergence
Sequencing of whole plastid genomes and nuclear ribosomal DNA of<i>Diospyros</i>species (Ebenaceae) endemic to New Caledonia: many species, little divergence Open
In plant groups in which multiple plastid markers are not sufficiently informative, an investigation at the level of the entire plastid genome may also not be sufficient for detailed phylogenetic reconstruction. Sequencing of complete plas…