Lukas VFN 🇪🇺Dec 21, 2023

How the growth of a giant single cell is intertwined with daily self-rhythms
https://phys.org/news/2023-11-growth-giant-cell-intertwined-daily.html

Macroscopic waves, biological clocks and morphogenesis driven by light in a giant unicellular green alga https://www.nature.com/articles/s41467-023-41813-6

"#Caulerpa is a type of marine #algae made up of one extended cell, though each plant can grow to be a meter across. While there are many individual nuclei within a Caulerpa plant, it contains no cell membranes that would normally divide it"

How the growth of a giant single cell is intertwined with daily self-rhythms

Caulerpa is a type of marine algae made up of one extended cell, though each plant can grow to be a meter across. While there are many individual nuclei within a Caulerpa plant, it contains no cell membranes that would normally divide the plant into many individual cells, resulting in a free-floating environment of cytoplasmic goo. As a result, Caulerpa poses interesting questions for developmental biologists—how does it carry out the normal functions of plants without being made up of separate cells?

Phys.org
Lukas VFN 🇪🇺Dec 5, 2023

Green macroalga #Caulerpa has replaced #seagrass in #Florida's #IndianRiver Lagoon https://phys.org/news/2023-12-green-macroalga-caulerpa-seagrass-florida.html

The green macroalga Caulerpa prolifera replaces seagrass in a nitrogen enriched, phosphorus limited, urbanized estuary https://www.sciencedirect.com/science/article/pii/S1470160X23011779

Rachel Brewton, Ph.D.: "Loss of #seagrasses in urbanized #estuaries is common, as they are highly susceptible to watershed nutrient and sediment inputs, making seagrasses effective biological sentinels"

Green macroalga caulerpa has replaced seagrass in Florida's Indian River Lagoon

The Indian River Lagoon was considered one of the last "unpolluted coastal lagoons" in Florida in the 1970s. Fast forward to today and most of the 156-mile lagoon is now considered impaired because of external sources of nutrients, including human waste, fertilizers, stormwater runoff, agriculture, rainfall, and sub-marine groundwater discharge.

CellBioNewsNov 25, 2023

How the #growth of a giant single #cell is intertwined with daily #self_rhythms.

#Caulerpa #morphogenesis #biological_clock #light

https://phys.org/news/2023-11-growth-giant-cell-intertwined-daily.html

How the growth of a giant single cell is intertwined with daily self-rhythms

Caulerpa is a type of marine algae made up of one extended cell, though each plant can grow to be a meter across. While there are many individual nuclei within a Caulerpa plant, it contains no cell membranes that would normally divide the plant into many individual cells, resulting in a free-floating environment of cytoplasmic goo. As a result, Caulerpa poses interesting questions for developmental biologists—how does it carry out the normal functions of plants without being made up of separate cells?

Phys.org
Frédéric Véron May 4, 2020
[#BotActu] « Les espèces invasives » https://www.futura-sciences.com/planete/dossiers/botanique-especes-invasives-1014/#xtor%3DRSS-9 #processionnairedupin #transportmaritime #espèceinvasive #mondialisation #espècenuisible #herbedelapampa #griffesorcière #renouéedujapon #Biodiversité #sylviculture #éradication #moulezébrée #myriophylle #perchedunil #canneàsucre #écosystème #allochtone #autochtone #botanique #Crepidula #Pissenlit #ambroisie #zoologie #écureuil #amarante #exotique #caulerpa #renard
Les espèces invasives

Une espèce invasive, ou espèce envahissante exogène, est une espèce vivante exotique qui devient un agent de perturbation nuisible à la biodiversité autochtone des écosystèmes naturels ou semi...