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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...
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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...
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Calcium and Early Development in Fucoid Algae.

Darryl L Kropf

    The Biological Bulletin
    |January 5, 2018
    PubMed
    Summary

    Calcium ions (Ca2+) are crucial for early plant development in fucoid algae. While essential for germination and root growth, their precise role in establishing the embryonic axis remains unclear.

    Area of Science:

    • Developmental biology
    • Plant biology
    • Cellular biology

    Background:

    • Embryonic axis establishment is fundamental to developmental biology.
    • Fucoid algae are model organisms for studying plant axis formation.
    • Calcium ions (Ca2+) are implicated in various cellular processes.

    Purpose of the Study:

    • To review and synthesize data on the role of Ca2+ in the early development of Fucus and Pelvetia.
    • To clarify the function of Ca2+ in embryonic axis formation in these algae.

    Main Methods:

    • Literature review of existing research on Ca2+ and fucoid algae development.
    • Analysis of experimental data concerning Ca2+ signaling pathways.

    Main Results:

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  • Ca2+ is demonstrated to be important for germination and rhizoid growth in Fucus and Pelvetia.
  • Evidence for Ca2+ involvement in the establishment of the embryonic axis is inconclusive.

    • Conclusions:

    • Ca2+ plays a significant role in early developmental stages of fucoid algae, specifically germination and rhizoid elongation.
    • The precise mechanism by which Ca2+ influences or regulates embryonic polarization requires further investigation.