A5064925407- Marine and coastal plant biology
- Marine Biology and Ecology Research
- Protist diversity and phylogeny
- Algal biology and biofuel production
- Diatoms and Algae Research
- Echinoderm biology and ecology
- Marine and coastal ecosystems
- Chromosomal and Genetic Variations
- Coral and Marine Ecosystems Studies
- Photosynthetic Processes and Mechanisms
- Lichen and fungal ecology
- Marine Ecology and Invasive Species
- Seaweed-derived Bioactive Compounds
- Insect Resistance and Genetics
- Marine Bivalve and Aquaculture Studies
- Coastal and Marine Management
- Mycorrhizal Fungi and Plant Interactions
- Aquatic Ecosystems and Phytoplankton Dynamics
- Plant Diversity and Evolution
- Plant Pathogens and Fungal Diseases
- Cephalopods and Marine Biology
- Pharmacological Effects of Medicinal Plants
- Plant Taxonomy and Phylogenetics
- Entomopathogenic Microorganisms in Pest Control
- Polar Research and Ecology
University of Messina
2010-2025
The red algal family Halymeniaceae has been recently the subject of taxonomic revisions based strictly on molecular data. As a result, number genera ascribed to it decreasing and many generic definitions changed profoundly owing inconsistencies in diacritical vegetative particularly reproductive characters standard literature. Reproductive uniformity within this claimed since late 19th century is generally supported by recent authors. In study we report consistent significant differences...
Species of the marine algal genus Gracilaria (Gracilariaceae, Rhodophyta) reported from Mediterranean are critically reassessed. Nine species recognized: armata (C. Agardh) J. Agardh, G. bursapastoris (S.G. Gmelin) Silva, conferta (Schousboe ex Montagne) Feldmann et Feldmann, corallicola Zanardini, dendroides Gargiulo, De Masi Tripodi, dura heteroclada (Montagne) longa and verrucosa (Hudson) Papenfuss. Descriptions distributional data provided for these species, a synoptic key to their...
Recently, DNA phylogenies resulted in the transfer of some species halymeniacean genus Aeodes, namely A. orbitosa and ulvoidea, to Pachymenia leaving former supposedly as a monotypic based on type species, nitidissima. Nevertheless, that work overlooked presence marginata, red foliaceus alga endemic Mediterranean Sea with convoluted nomenclatural history.In present study, we provided thorough description marginata both anatomical molecular data inferred its phylogenetic relationships among...
Abstract Chromosome numbers for four species of Cladophora from coastal North Carolina are presented. The basic chromosome number is six, with three median and submedian chromosomes. represent a polyploid series, 12, 18, 24, 30, 36 found in the present study. Three size classes (large, medium, small) represented by individual species. Correlations between each species' karyotype its morphology distribution discussed. Karyotype probable evolutionary trends form sections Glomeratae Rupestres...
Background: The Talassemtane National Park (PNTLs) characterized by a rich floristic diversity. We carried out an ethnobotanical survey in the PNTLs, we have identified total of 152 medicinal plant species belonging to 44 botanical families. Lamiaceae is one 20 largest families, and with significantly higher proportion plants. study aimed specify uses PNTLs evaluate context application indices. Methods: Open-ended interviews, semi-structured questionnaires were conducted between 2014 2017 on...
A new species of Halymenia (Halymeniaceae, Gigartinales) is described from the Bay Naples, Italy. H. asymmetrica characterized by a planar thallus, up to 50 cm wide, growing short cuneate stipe. The blade lobed and shows an essentially entire margin. One lobes usually more expanded, giving asymmetrical appearance thallus. Tetrasporangial gametangial plants have been studied in detail. Tetrasporangia are cruciately divided. Carpogonial auxiliary ampullae arise inner cortical cells; cystocarps...
Abstract Chromosome numbers for three species of Cladophora from Bermuda are presented. C. laetevirens (Dillw.) Kuetz., prolifera (Roth) and conferta Crouan frat. ex Schramm & Maze were found to have similar karyotypes with 1 N = 2 X 12 chromosomes belonging size class III (0.8–2.2 μm). Correlations between each species' karyotype its morphology phytogeographic affinity discussed. Estimates the basic genome (1 X) these other indicate that nuclear DNA content, which shows a threefold...
Abstract Gracilaria longa sp. nov. is described from the Mediterranean Sea, after a comparison of habit, morphology and reproduction with other species same area. The characterized by elongate second order axes, slender ultimate branchlets, «verrucosa-type» spermatangial conceptacles, lobed fusion cell poorly developed inner pericarp. Karyological observations on meiotic tetrasporangia showed that n=24. A terete thalli presented. morphological similarities between some genus in are...
AbstractAbstractThe life history of Bangia atropurpurea (Bangiales, Rhodophyta) from the Alcantara River (Sicily, Italy) was studied in field and laboratory. An alternation between a macroscopic phase microscopic filamentous conchocelis found, spermatia carpogonia are described for first time freshwater population species. Endosporangia have also been discovered on gametophytic plants culture. In addition, produced either conchosporangia or monosporangia, reproduction by fragmentation...
Acrodiscus Zanardini is a poorly known monotypic endemic Mediterranean genus based on A. vidovichii (Menegh.) Zanardini. Rarely reported, its reproductive structures have remained undocumented, leaving exact taxonomic position uncertain. Solely the basis of vegetative structure, provisionally placed it in family Cryptonemiaceae order Cryptonemiales (currently Halymeniaceae Halymeniales), although he was uncertain as to whether new actually belonged that or should instead be included...
A detailed karyotype analysis was carried out on several populations of Bangia atropurpurea (Roth) C. Agardh from marine and freshwater habitats in Italy. All the studied had a constant somatic chromosome number n = 3. statistical chromosomal dimensions allowed recognition consistent difference size Neither nor showed significant interpopulation variation shape; however, comparison karyotypes between thalli revealed differences. Chromosome 3 specimens is significantly shorter than same...
ABSTRACT The discoid thallus of Erythrocladia irregularis is the result a pattern cellular divisions expressed by mono‐and endospores; latter are described for first time in Erythrocladia. In nutrient enriched growth conditions becomes shapeless aggregate unicells with wrinkled wall surface, whose plane division unpredictable. cells able to produce monosporangia curved or they form eight‐celled endosporangia. Chloroplasts have an internal pyrenoid, as characteristic Erythropeltidaceae....
ABSTRACT We studied the karyology of Bangia atropurpurea (Roth) C. Ag. collected from marine and freshwater populations Mediterranean region some northeastern Atlantic localities. Gametophytic thalli had two haploid karyotypes, n = 3 4. The 4 karyotype was only occasionally present in also found one population, confirming a previous report. propose that four‐chromosome is an aneuploid form, + 1. Chromosomes were frequently observed either parallel arrangement or circular configuration.
Abstract Cordylecladia guiryi sp. nov. is described from the Mediterranean Sea, after a comparison of habit, morphology and reproduction with C. erecta, only species genus. The characterized by small dimension its axes which arise single basal crust habitat, growing epiphytically on Posidonia oceanica Delile leaves. Tetrasporangial gametangial plants as well development carposporophyte have been studied in detail. carpogonial branch 4-celled it formed supporting cell that also bears 3-celled...
SUMMARY This study focused on a method based the capacity of cationic dyes to stain only nucleus and chromosomes in cells subjected either acid or alkaline hydrolysis. The squash were optimized for Characeae described detail. Nuclei from vegetative shoot apices antheridial filament unfixed, fixed herbarium material Nitella opaca investigated using Azure A Toulidine Blue stains. Comparisons with some other staining methods, used previous studies, also reported. A/Toulidine is useful obtain...