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Related Concept Videos

The Angiosperm Life Cycle02:39

The Angiosperm Life Cycle

Plants have a life cycle split between two multicellular stages: a haploid stage—with cells containing one set of chromosomes—and a diploid stage—with cells containing two sets of chromosomes. The haploid stage is the gamete-producing gametophyte, and the diploid stage is the spore-producing sporophyte.
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.
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Introduction to Seed Plants03:40

Introduction to Seed Plants

Most plants are seed plants—characterized by seeds, pollen, and reduced gametophytes. Seed plants include gymnosperms and angiosperms.

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Non-radioactive in situ Hybridization Protocol Applicable for Norway Spruce and a Range of Plant Species
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Why does biparental plastid inheritance revive in angiosperms?

Quan Zhang1, Sodmergen

  • 1Key Laboratory of Cell Proliferation and Differentiation (Ministry of Education), College of Life Science, Peking University, 100871 Beijing, China.

Journal of Plant Research
|January 7, 2010
PubMed
Summary
This summary is machine-generated.

Plants often inherit plastids from both parents, challenging the maternal inheritance belief. This biparental plastid inheritance in angiosperms may have evolved to support species with defective plastids.

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Area of Science:

  • Plant biology
  • Genetics
  • Evolutionary biology

Background:

  • Maternal inheritance of plastid and mitochondrial genomes is a common assumption.
  • Paternal transmission of plant genomes, particularly plastids, is frequently observed.
  • Potential biparental plastid inheritance (PBPI) affects up to 20% of angiosperm genera.

Purpose of the Study:

  • To investigate the evolutionary reasons behind paternal plastid transmission in plants.
  • To understand the role of nuclear cytoplasmic conflicts in altering organelle inheritance.
  • To explore the potential adaptive significance of biparental plastid inheritance.

Main Methods:

  • Phylogenetic analysis to reconstruct ancestral inheritance patterns.
  • Review of existing evidence on plastid inheritance in angiosperms.
  • Comparative genomics and evolutionary developmental biology approaches.

Main Results:

  • PBPI shows a unilateral occurrence in angiosperms, suggesting a specific evolutionary event.
  • Nuclear cytoplasmic conflicts appear to be a significant driver of altered organelle inheritance in angiosperms.
  • Biparental inheritance might serve as a rescue mechanism for angiosperm species with compromised plastids.

Conclusions:

  • The evolution of biparental plastid inheritance is linked to nuclear cytoplasmic conflicts unique to angiosperms.
  • Paternal plastid transmission may have played a crucial role in angiosperm diversification and adaptation.
  • Understanding PBPI offers insights into plant evolution and the dynamics of organelle inheritance.