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Stability and plasticity during chloroplast development.

R M Leech

    Symposia of the Society for Experimental Biology
    |January 1, 1986
    PubMed
    Summary

    Chloroplast development involves sequential structural and biochemical changes, driven by both nuclear and chloroplast genomes. Genomic and genotypic differences significantly influence these processes, particularly in wheat species.

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    Nuclear DNA content and the control of chloroplast replication in wheat leaves.

    Planta·2013

    Area of Science:

    • Plant Biology
    • Molecular Biology
    • Cellular Development

    Background:

    • Chloroplast development is a conserved, complex process involving nuclear and chloroplast genomes.
    • It encompasses sequential structural and biochemical changes from proplastids to mature chloroplasts.

    Purpose of the Study:

    • To describe chloroplast division and development in angiosperms.
    • To detail the synthesis of major chloroplast components.
    • To discuss the nuclear genome's role in chloroplast development.

    Main Methods:

    • Description of sequential and structural changes during chloroplast development.
    • Biochemical analysis of chloroplast component synthesis (chlorophylls, lipids, nucleic acids, proteins).
    • Investigation of genomic and genotypic effects on ribulose bisphosphate carboxylase-oxygenase accumulation in wheat.

    Main Results:

    • Chloroplast development is a quantitative accretion of functional units, with early plastids being photochemically competent.
    • Stable genomic and genotypic differences influencing chloroplast development were identified in wheat.
    • Effects of ploidy and genetic manipulation on chloroplast development were observed.

    Conclusions:

    • The nuclear genome plays a dominant role in regulating chloroplast development.
    • Genomic and genotypic variations offer insights into conserved chloroplast development pathways.
    • Further research can explore these genetic variations for a deeper understanding of chloroplast biogenesis.

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