Red algae - Wikipedia
Red algae form a distinct group characterized by eukaryotic cells without flagella and centrioles, chloroplasts without external endoplasmic reticulum or unstacked (stroma) thylakoids, and use phycobiliproteins as accessory pigments, which give them their red color. [11]
Red algae: Current Biology - Cell Press
2024年9月23日 · The red algae are a morphologically diverse group of eukaryotic organisms that make up the most diverse and largest group of seaweeds found in the oceans today. In evolutionary terms, the red algae form a distinct phylum within the Archaeplastida (or Plantae) kingdom called the Rhodophyta, and thus share a common evolutionary origin with the ...
Red algae – characteristics, structure, reproduction, and examples
Red algae have double cell walls. The outer layers contain the polysaccharides (complex sugars) – agarose and agaropectin that can be extracted from the cell walls to make agar. The internal walls are mostly cellulose (like normal plant cells’ cell walls).
Unraveling the evolutionary trajectory of LHCI in red-lineage algae ...
Red algal LHCs contain chlorophyll a and zeaxanthin as a carotenoid, while most LHCs of red-lineage secondary endosymbiotic algae include chlorophyll a and c; carotenoids depend on the taxonomic group.
Red macroalgae in the genomic era - Borg - 2023 - New …
2023年8月30日 · Here, we review landmark studies on the red algae that have addressed their evolutionary origins and phylogenetic relationships, their cell and reproductive biology, their complex life cycles, as well as emerging genomic resources that are furthering our understanding of eukaryotic evolution.
18.3: Phylum Rhodophyta - The Red Algae - Biology LibreTexts
The red algae represent a monophyletic group of organisms. Members of this group share the following characteristics: Morphology: Unicellular to multicellular, no flagellated stages. Cells of multicellular species are connected via incomplete cytokinesis, resulting in pit connections. Cell wall composition: Cellulose and galactans
Rhodophyta - SpringerLink
2016年1月1日 · Rhodophyta, or red algae, comprises a monophyletic lineage within Archaeplastida that includes glaucophyte algae and green algae plus land plants. Rhodophyta has a long fossil history with evidence of Bangia -like species in ca. 1.2 billion-year-old deposits.
Red Alga - an overview | ScienceDirect Topics
The red algae are one of the oldest groups of eukaryotic algae. It forms a unique group characterized by eukaryotic cells without centrioles and flagella, as well as chloroplasts lacking endoplasmic reticulum and thylakoids. Phycobiliproteins, as accessory pigments, give …
Biosynthesis of the Cell Walls of the Algae | SpringerLink
2016年3月22日 · In most taxa of the late divergent green, brown and red algae, the ECM is typically characterized by cell walls that consist of microfibrillar networks embedded in matrices of diverse polysaccharides and proteins.
Red algae | Marine, Seaweed, Rhodophyta | Britannica
red algae, (division Rhodophyta), any of about 6,000 species of predominantly marine algae, often found attached to other shore plants. Their morphological range includes filamentous, branched, feathered, and sheetlike thalli.