The evolution of the plastid chromosome in land plants: gene content, gene order, gene function
By Susann Wicke, G. Schneeweiss, Claude W. dePamphilis, Kai F. Müller, D. Quandt. Plant Molecular Biology, 2011
1,303 citations recorded by the source corpus.
This review bridges functional and evolutionary aspects of plastid chromosome architecture in land plants and their putative ancestors. We provide an overview on the structure and composition of the plastid genome of land plants as well as the functions of its genes in an explicit phylogenetic and evolutionary context. We will discuss the architecture of land plant plastid chromosomes, including gene content and synteny across land plants. Moreover, we will explore the functions and roles of plastid encoded genes in metabolism and their evolutionary importance regarding gene retention and conservation. We suggest that the slow mode at which the plastome typically evolves is likely to be influenced by a combination of different molecular mechanisms. These include the organization of plastid genes in operons, the usually uniparental mode of plastid inheritance, the activity of highly effective repair mechanisms as well as the rarity of plastid fusion. Nevertheless, structurally rearranged plastomes can be found in several unrelated lineages (e.g. ferns, Pinaceae, multiple angiosperm families). Rearrangements and gene losses seem to correlate with an unusual mode of plastid transmission, abundance of repeats, or a heterotrophic lifestyle (parasites or myco-heterotrophs). While only a few functional gene gains and more frequent gene losses have been inferred for land plants, the plastid Ndh complex is one example of multiple independent gene losses and will be discussed in detail. Patterns of ndh-gene loss and functional analyses indicate that these losses are usually found in plant groups with a certain degree of heterotrophy, might rendering plastid encoded Ndh1 subunits dispensable.
Subfields: Ecology, Evolution, Behavior and Systematics, Molecular Biology, Plant Science
View Paper: https://www.semanticscholar.org/paper/935ab319594313fb5439ee505a06ee30e82a938a
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Citations in the corpus
- Plastid genome sequences of legumes reveal parallel inversions and multiple losses of rps16 in papilionoids (2015, background): “Variation in plastome size in photosynthetic seed plants is typically attributed to IR expansion/contraction or loss, gene duplication or gene loss (Wicke et al., 2011; Jansen & Ruhlman, 2012) or increased repetitive DNA content in intergenic regions (Blazier et al., 2011; Green, 2011; Sabir et…”
- MitoHiFi: a python pipeline for mitochondrial genome assembly from PacBio high fidelity reads (2023, positive): “The plastid genome is characterised by a large inverted repeat region that includes small and large subunit ribosomal RNA genes, and occasionally other loci [25].”