Why are Centrosomes Absent in Plant Cells?
By Balaji
Updated on: February 17th, 2023
Fungi and plants do not have centrosomes and use MTOC structures to coordinate their microtubules. All plant cells lack centrioles and spindle bodies, with the exception of the flagellated male gametes, which are present in all flowering plants (conifers). During plant cell mitosis, the nuclear envelope takes over the MTOC’s primary role in microtubule nucleation and spindle organisation.
Table of content
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1. Absence of Centrosome in Plant Cells
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2. Why are Centrosomes Absent in Plant Cells?
Absence of Centrosome in Plant Cells
The cellular structure known as a centrosome participates in cell division. The centrosome duplicates prior to cell division, after which the two centrosomes move to the opposite ends of the cell as division gets underway.
- Higher plants have evolved a different pathway to regulate cytoskeleton assembly and dynamics.
- Although plant and animal cells share major cytoskeletal elements which imply directed work, plants do not have centrosome-like organelles.
- However, they are still capable of building spindles and have therefore developed preprophase bands, cortical array, and phragmoplast that participate in essential growth processes.
- A few elements, like gamma-tubulin, play an important role in the nucleation of microtubules on the nucleus surface.
Summary:
Why are Centrosomes Absent in Plant Cells?
The centrosomes are absent in plant cells and they use MTOC structures to coordinate their microtubules. Microtubules are nucleated at organization and nucleation centres in other eukaryotes committed to establishing polarity.
Related Questions:
- The Plant that Traps and Feeds on Insects is?
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- Which among the following is an Insectivorous plant?
- Whose Main Job Gives a Plant Cell Strength and Stiffness?
- Name the Smallest Union Territory of India
