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Related Concept Videos

Non-nuclear Inheritance01:29

Non-nuclear Inheritance

Most DNA resides in the nucleus of a cell. However, some organelles in the cell cytoplasm⁠—such as chloroplasts and mitochondria⁠—also have their own DNA. These organelles replicate their DNA independently of the nuclear DNA of the cell in which they reside. Non-nuclear inheritance describes the inheritance of genes from structures other than the nucleus.
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes02:16

Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes

The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...
The Phragmoplast01:59

The Phragmoplast

Cell division is essential for organismal growth and development. In animal cells, the central spindle and its associated proteins form the midbody, a structure that has an essential role in cytokinesis. In plants, the central spindle, along with the microtubules, actin, and other cell components, matures into the phragmoplast, which is necessary for cytokinesis. Unlike the stationary midbody, the phragmoplast expands centrifugally, eventually leading to the formation of the new cell wall.
The...
The Phragmoplast01:59

The Phragmoplast

Cell division is essential for organismal growth and development. In animal cells, the central spindle and its associated proteins form the midbody, a structure that has an essential role in cytokinesis. In plants, the central spindle, along with the microtubules, actin, and other cell components, matures into the phragmoplast, which is necessary for cytokinesis. Unlike the stationary midbody, the phragmoplast expands centrifugally, eventually leading to the formation of the new cell wall.
The...
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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Related Experiment Video

Updated: Jul 13, 2026

Optimization and Comparative Analysis of Plant Organellar DNA Enrichment Methods Suitable for Next-generation Sequencing
12:33

Optimization and Comparative Analysis of Plant Organellar DNA Enrichment Methods Suitable for Next-generation Sequencing

Published on: July 28, 2017

Plastid division in an evolutionary context.

Astrid E Tveitaskog1, Jodi Maple, Simon G Møller

  • 1Centre for Organelle Research, Department of Mathematics and Natural Science, University of Stavanger, N-4036 Stavanger, Norway.

Biological Chemistry
|August 19, 2007
PubMed
Summary
This summary is machine-generated.

Plastids evolved from cyanobacteria and divide via binary fission. Recent research reveals the evolutionary path of chloroplast division proteins in plants like Arabidopsis.

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Area of Science:

  • Plant Biology
  • Cell Biology
  • Evolutionary Biology

Background:

  • Plastids, including chloroplasts, originate from endosymbiotic cyanobacteria.
  • These organelles retain the ancestral binary fission mechanism for division.
  • Understanding plastid division is key to plant cell biology and evolution.

Purpose of the Study:

  • To review the current understanding of chloroplast division protein evolution.
  • To present a model for the development of plastid division machinery in plants.
  • To integrate genomic data with functional analyses of division components.

Main Methods:

  • Literature review of recent findings in plastid division research.
  • Analysis of genomic resources for identifying division proteins.
  • Functional characterization of key proteins involved in chloroplast division.

Main Results:

  • Identification and functional analysis of numerous plastid division components.
  • Insights into the evolutionary trajectory of these proteins from cyanobacteria.
  • Development of a comprehensive model for chloroplast division in Arabidopsis.

Conclusions:

  • The chloroplast division machinery in higher plants is a product of evolutionary adaptation from its cyanobacterial origins.
  • Continued research on division proteins enhances our understanding of plant cell evolution.
  • Arabidopsis serves as a key model organism for studying these processes.