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Related Concept Videos

Green Algae01:21

Green Algae

Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
Overview of Algae01:28

Overview of Algae

The kingdom Archaeplastida encompasses red and green algae, along with land plants. Unlike other protists with chloroplasts that arose through secondary endosymbiosis, only red and green algae originated from primary endosymbiotic events. This diverse group of eukaryotic organisms contains chlorophyll and performs oxygenic photosynthesis.Algae exist in various forms, from large brown kelp in coastal waters to green scum in puddles and stains on rocks or soil. Some species are responsible for...
Red Algae01:23

Red Algae

Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
Other Algae01:19

Other Algae

The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...
Microbial Phylogeny01:28

Microbial Phylogeny

Understanding the evolutionary relationships among microorganisms is fundamental to microbial ecology and taxonomy. Phylogenetic trees are essential tools for inferring these relationships, relying primarily on comparative analyses of molecular sequences such as DNA, RNA, or proteins. In microbial studies, these trees typically depict the evolutionary paths of diverse bacterial and archaeal species by mapping genetic differences accumulated over time.Phylogenetic trees are composed of tips,...
The Anatomy of Chloroplasts01:08

The Anatomy of Chloroplasts

Green algae and plants, including green stems and unripe fruit, harbor specialized organelles called chloroplasts to carry out photosynthesis. They coordinate both stages of photosynthesis — the light-dependent reactions and the light-independent reactions. The light-dependent reactions use sunlight to release oxygen and produce chemical energy in the form of ATP and NADPH, and the light-independent reactions capture CO2 and use ATP and NADPH to produce sugar.
Structure of Chloroplasts
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Updated: Jun 5, 2026

Cultivation of Green Microalgae in Bubble Column Photobioreactors and an Assay for Neutral Lipids
11:08

Cultivation of Green Microalgae in Bubble Column Photobioreactors and an Assay for Neutral Lipids

Published on: January 7, 2019

Green algal phylogeny.

R M McCourt1

  • 1Dept of Biological Sciences, DePaul Univerity, Chicago, IL 60614, USA.

Trends in Ecology & Evolution
|January 18, 2011
PubMed
Summary
This summary is machine-generated.

Fine structure studies revolutionized green algae (Chlorophyta) evolution theories. Molecular phylogenetics confirms some green algae are closest relatives to land plants, though ancient divergences remain challenging to resolve.

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Last Updated: Jun 5, 2026

Cultivation of Green Microalgae in Bubble Column Photobioreactors and an Assay for Neutral Lipids
11:08

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Published on: January 7, 2019

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Area of Science:

  • Evolutionary biology
  • Phycology
  • Plant science

Background:

  • 1970s fine structure studies revised green algae (Division Chlorophyta) evolution.
  • Molecular phylogenetics is increasingly used to understand plant lineage.
  • Green algae-land plant relationships are a key area in evolutionary botany.

Purpose of the Study:

  • To review the impact of ultrastructural and molecular data on understanding green algal evolution.
  • To discuss the challenges in resolving early divergences within the green algal-land plant lineage.
  • To highlight the interplay between different data types in plant classification.

Main Methods:

  • Comparative analysis of ultrastructural data from green algal cells.
  • Application of molecular phylogenetic methods using various sequence data.
  • Examination of evolutionary radiations and branch topology in phylogenetic analyses.

Main Results:

  • Molecular data largely supports earlier, unconventional proposals on green algal relatives of land plants.
  • Ultrastructural characters are reinforced as valuable in classification.
  • Vegetative form is challenged as a primary classification feature.

Conclusions:

  • The closest living relatives of land plants are found within specific green algal groups.
  • Resolving the earliest divergences remains difficult due to rapid radiations and analytical variability.
  • A combination of ultrastructural and molecular data is crucial for accurate green algal classification and understanding plant evolution.