Exploitation of waste biomass of the invasive alga species Rugulopteryx okamurae in Morocco: In-vitro antibacterial-antibiofilm properties and GC- MS metabolite profiling DOI
Monsif El Madany et al.,

Zine El abidine Bzazou El Ouazzani,

Leonel Pereira

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Abstract Since 2017, the invasive brown alga Rugulopteryx okamurae has posed significant biological, ecological, and socio-economic challenges in Morocco due to its rapid proliferation accumulation. This study explores antimicrobial antibiofilm properties chemical composition. Methanol, chloroform, ethyl acetate (EtOAc) extracts were evaluated for antibacterial activity against six human pathogens, including clinical reference strains of Escherichia coli Staphylococcus aureus. Fourier-transform infrared spectroscopy (FT-IR) identified functional groups such as hydroxyl (O-H), carbonyl (C = O), polysaccharides, indicative bioactive compounds. Gas chromatography-mass spectrometry (GC-MS) revealed key components: oleic acid butyl ester EtOAc extract, methyl tetradecanoate chloroform pentadecanoic methanolic extract. The potential was assessed using microdilution growth curve assays, with minimal inhibitory bactericidal concentrations ranging from 3.12–50 mg/mL. Growth analysis showed bacteriostatic effects through lag phase extension rate suppression. extract demonstrated highest activity, reducing biofilm formation by 73% E. (clinical strain TT-23) 70% S. aureus 70). These results suggest that R. contains compounds promising properties, potentially valuable mitigating impacts while offering applications development.

Language: Английский

Morphotaxonomic, phylogenetic and phytochemical study of the invasive, green-tide-forming macroalga Ulva tepida (Chlorophyta) firstly recorded from the African-Mediterranean coastal waters DOI

Neamat H. El-Tablawy,

Olfat Salem,

Lenka Štenclová

et al.

Aquatic Botany, Journal Year: 2025, Volume and Issue: 198, P. 103867 - 103867

Published: Jan. 6, 2025

Language: Английский

Citations

0
From ecological to anthropogenic factors: unraveling the drivers of blue crab Callinectes sapidus occurrence along the Mediterranean coasts DOI Creative Commons
Anna Gavioli, Giuseppe Castaldelli, David B. Eggleston

et al.

Frontiers in Marine Science, Journal Year: 2025, Volume and Issue: 11

Published: Jan. 16, 2025

Introduction Non-native species are widely recognized as threats to biodiversity, ecosystems, and the services they provide humans. The Mediterranean Sea has a high biodiversity of endemic is hot spot biological invasions. One most recent ecosystems invasion Atlantic blue crab Callinectes sapidus . Methods occurrences throughout coastline were indexed from citizen science through Global Biodiversity Information Facility. Using spatial analysis linear mixed models, we investigated geomorphology (i.e., water depth coastal wetlands extension), physical variables salinity winter summer temperature), quality chlorophyll-a, nitrate orthophosphate) anthropogenic factors ship density population size) potentially affecting occurrence along coast. Results Our results showed that nitrate, an indicator riverine nutrient loading, depth, slope bottom, influential in explaining crabs. Water temperature had lesser impacts; factors, such commercial marine traffic human size no effect on occurrence. Discussion These sug gest benthic primary production shallow drive coasts. Even considering data limitations gaps, our large-scale findings contribute broader understanding success which, turn, can inform management actions outline research needs.

Language: Английский

Citations

0
Climate Change and Lessepsian Migration to the Mediterranean Sea DOI
Tarek M. Khalil, Amr B. Mostafa, Marwa M. El-Naggar

et al.

Earth and environmental sciences library, Journal Year: 2025, Volume and Issue: unknown, P. 85 - 118

Published: Jan. 1, 2025

Language: Английский

Citations

0
Revealing the Nexus Between Wind Wave Dynamics and Vegetation Biodiversity in Poyang Lake's Ecological Transition Zone DOI Open Access
Xue Shang, Wenbo Chen, Fuqing Zhang

et al.

Ecohydrology, Journal Year: 2025, Volume and Issue: 18(2)

Published: March 1, 2025

ABSTRACT Wind wave is a significant hydrodynamic factor in Poyang Lake, affecting the stability of lake ecosystem. However, processes and mechanisms by which it drives biodiversity patterns ecological transition zones are not clear. This study delves into intricate relationship between wind characteristics vegetation within lake's zone during normal water level period from October to March 2018–2019 provides novel insights oscillation cycles indexes their influence on patterns. The main findings were as follows: (1) cyclical trend occurred height (WVH), wavelength (WVL) shoreline flushing distance (FLD), with distinct periods energy centres, notably 47‐day primary for WVH WVL, 40 days FLD. It underscored dynamic nature interactions potential shape landscape. (2) Species richness increased grasslands zones, dominated Carex cinerascens, Phragmites communis Triarrhena lutarioriparia, then declined towards areas where Phalaris arundinacea Gnaphalium affine became key species. (3) (Shannon Diversity Index [SHDI], Modified Simpson [MSIDI]) evenness Evenness [SHEI], [MSIEI]) reached highest lowest grassland, indicating importance these species diversity. (4) There was positive correlation wave‐induced coverage. further linked regulatory effects richness, inversely size diversity evenness. Our highlight complex trade‐offs evenness/diversity, providing foundation future restoration conservation efforts. only contributes scientific understanding Lake ecosystem but also offers strategic sustainable management.

Language: Английский

Citations

0
Exploitation of waste biomass of the invasive alga species Rugulopteryx okamurae in Morocco: In-vitro antibacterial-antibiofilm properties and GC- MS metabolite profiling DOI
Monsif El Madany et al.,

Zine El abidine Bzazou El Ouazzani,

Leonel Pereira

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Abstract Since 2017, the invasive brown alga Rugulopteryx okamurae has posed significant biological, ecological, and socio-economic challenges in Morocco due to its rapid proliferation accumulation. This study explores antimicrobial antibiofilm properties chemical composition. Methanol, chloroform, ethyl acetate (EtOAc) extracts were evaluated for antibacterial activity against six human pathogens, including clinical reference strains of Escherichia coli Staphylococcus aureus. Fourier-transform infrared spectroscopy (FT-IR) identified functional groups such as hydroxyl (O-H), carbonyl (C = O), polysaccharides, indicative bioactive compounds. Gas chromatography-mass spectrometry (GC-MS) revealed key components: oleic acid butyl ester EtOAc extract, methyl tetradecanoate chloroform pentadecanoic methanolic extract. The potential was assessed using microdilution growth curve assays, with minimal inhibitory bactericidal concentrations ranging from 3.12–50 mg/mL. Growth analysis showed bacteriostatic effects through lag phase extension rate suppression. extract demonstrated highest activity, reducing biofilm formation by 73% E. (clinical strain TT-23) 70% S. aureus 70). These results suggest that R. contains compounds promising properties, potentially valuable mitigating impacts while offering applications development.

Language: Английский

Citations

0