Algal

Algae is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular microalgae, such as Chlorella, Prototheca and the diatoms, to multicellular forms, such as the giant kelp, a large brown alga which may grow up to 50 metres in length. Most are aquatic and autotrophic and lack many of the distinct cell and tissue types, such as stomata, xylem and phloem that are found in land plants. The largest and most complex marine algae are called seaweeds, while the most complex freshwater forms are the Charophyta, a division of green algae which includes, for example, Spirogyra and stoneworts. No definition of algae is generally accepted. One definition is that algae "have chlorophyll a as their primary photosynthetic pigment and lack a sterile covering of cells around their reproductive cells".

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'Friend or foe' bacteria kill their algal hosts when coexisting is no longer beneficial

Study your local pond to help track algal growth around the world

Resolving the evolutionary history of the closest algal relatives of land plants

To tame lake-fouling algal blooms, try an ecosystem approach

Research clarifies hazards posed by harmful algal blooms

Discovery about coral-algal symbiosis could help coral reefs recover after bleaching events

Algal Blooms May Have Threatened These Ancient Cities

Algal blooms in freshwater lakes are becoming more common worldwide

Whole-body regeneration has been identified in photosynthetic sea slugs. The slugs shed their entire body, including the heart, and while the body is detached the head takes on chloroplasts from algal food. These chloroplasts are used for photosynthesis, thought to aid survival of the severed head.

Color-changing indicator predicts algal blooms

Growing potential for toxic algal blooms in the Alaskan Arctic

Australian Wildfires Triggered Massive Algal Blooms in Southern Ocean – Raises New Questions About Oceanic Carbon Uptake

Satellites watch Australian wildfires trigger CO2 booms and ocean algal blooms

Most CO2 from Australia’s megafires has been offset by algal blooms

Australian wildfires triggered massive algal blooms in Southern Ocean

Face masks protect against aerosolized toxins from algal blooms, study finds

Harmful algal blooms jeopardize health of reptiles, songbirds

More Harmful Algal Bloom Impacts Emerge Amid Rising Seafood Demand and Coastal Development

UN: More harmful algal bloom impacts emerge amid rising seafood demand, coastal development

Blind man regains some vision, with help from light-sensing algal protein