Easier Lost than Found? What We Know about Plastid Genome Reduction

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F24%3A00604889" target="_blank" >RIV/60077344:_____/24:00604889 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/24:43909298 RIV/00216208:11310/24:10484365

Výsledek na webu

<a href="https://doi.org/10.1007/978-3-031-57446-7_5" target="_blank" >https://doi.org/10.1007/978-3-031-57446-7_5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-031-57446-7_5" target="_blank" >10.1007/978-3-031-57446-7_5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Easier Lost than Found? What We Know about Plastid Genome Reduction

Popis výsledku v původním jazyce

Plastids are eukaryotic organelles that evolved from a photobiotic symbiont, imparting photosynthetic abilities to heterotrophic hosts. Plastids lose much of their complexity during the endosymbiont-to-organelle transition, reflecting the need of the symbiotic partners to synchronize reproduction and streamline metabolism. This is obvious from genome size reduction, and while the genomes of plastid predecessors, cyanobacteria, typically range 1.6–7.8 Mbp, most plastid genomes range 110–190 kbp. In some lineages, plastid genomes depart from convention, which manifests two-way. Whereas in rhodophytes, chlorophytes, plants, and eugl- enids this leads to the expansion of noncoding DNA, in dinoflagellates, the plastid genome is fragmented into single-gene minicircles, and in one chlorophyte lineage into linear single-stranded hairpin chromosomes. Yet, plastids may later enter the dark phase of their “life history.” Driven by competition, even established phototrophic organisms sometimes revert to heterotrophy or parasitism, leading to further impairment or complete loss of photosynthesis. Here, we recapitulate the history of plastids from early acquisition to their disappearance in nonphotosynthetic algae and plants. We compare how molecular functions encoded by plastids vary in diverse eukaryotic lineages that acquired them, and how they vary in lineages about to lose them. We highlight how genome reduction accompanies plastid life cycles and how evolutionary history shapes their ultimate future.

Název v anglickém jazyce

Easier Lost than Found? What We Know about Plastid Genome Reduction

Popis výsledku anglicky

Plastids are eukaryotic organelles that evolved from a photobiotic symbiont, imparting photosynthetic abilities to heterotrophic hosts. Plastids lose much of their complexity during the endosymbiont-to-organelle transition, reflecting the need of the symbiotic partners to synchronize reproduction and streamline metabolism. This is obvious from genome size reduction, and while the genomes of plastid predecessors, cyanobacteria, typically range 1.6–7.8 Mbp, most plastid genomes range 110–190 kbp. In some lineages, plastid genomes depart from convention, which manifests two-way. Whereas in rhodophytes, chlorophytes, plants, and eugl- enids this leads to the expansion of noncoding DNA, in dinoflagellates, the plastid genome is fragmented into single-gene minicircles, and in one chlorophyte lineage into linear single-stranded hairpin chromosomes. Yet, plastids may later enter the dark phase of their “life history.” Driven by competition, even established phototrophic organisms sometimes revert to heterotrophy or parasitism, leading to further impairment or complete loss of photosynthesis. Here, we recapitulate the history of plastids from early acquisition to their disappearance in nonphotosynthetic algae and plants. We compare how molecular functions encoded by plastids vary in diverse eukaryotic lineages that acquired them, and how they vary in lineages about to lose them. We highlight how genome reduction accompanies plastid life cycles and how evolutionary history shapes their ultimate future.

Druh

C - Kapitola v odborné knize

CEP obor

—

OECD FORD obor

10606 - Microbiology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Endosymbiotic Organelle Acquisition

ISBN

978-3-031-57444-3

Počet stran výsledku

35

Strana od-do

(2024)

Počet stran knihy

494

Název nakladatele

Springer Cham

Místo vydání

Cham

Kód UT WoS kapitoly

—