Plastid Division

Faculty Opinions recommendation of Plastid division is mediated by combinatorial assembly of plastid division proteins.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.1028025.336017 ◽

2005 ◽

Author(s):

Katherine Osteryoung

Keyword(s):

Plastid Division ◽

Combinatorial Assembly

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AoB Plants ◽

10.1093/aobpla/plq016 ◽

2010 ◽

Vol 2010 ◽

Cited By ~ 13

Author(s):

Kevin Andrew Pyke

Keyword(s):

Plastid Division

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Plastid division coordination across a double-membraned structure

FEBS Letters ◽

10.1016/j.febslet.2007.02.062 ◽

2007 ◽

Vol 581 (11) ◽

pp. 2162-2167 ◽

Cited By ~ 19

Author(s):

Jodi Maple ◽

Simon Geir Møller

Keyword(s):

Plastid Division

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Loss of plastid developmental genes coincides with a reversion to monoplastidy in hornworts

10.1101/2022.01.11.475830 ◽

2022 ◽

Author(s):

Alexander Istvan MacLeod ◽

Parth K Raval ◽

Simon Stockhorst ◽

Michael Knopp ◽

Eftychios Frangedakis ◽

...

Keyword(s):

Common Ancestor ◽

Nuclear Division ◽

Developmental Pathways ◽

Ancestral State ◽

Plastid Division ◽

Plastid Development ◽

State Reconstruction ◽

Transcriptomic Data ◽

The Common ◽

Almost All

The first plastid evolved from an endosymbiotic cyanobacterium in the common ancestor of the Archaeplastida. The transformative steps from cyanobacterium to organelle included the transfer of control over developmental processes; a necessity for the host to orchestrate, for example, the fission of the organelle. The plastids of almost all embryophytes divide independent from nuclear division, leading to cells housing multiple plastids. Hornworts, however, are monoplastidic (or near-monoplastidic) and their photosynthetic organelles are a curious exception among embryophytes for reasons such as the occasional presence of pyrenoids. Here we screened genomic and transcriptomic data of eleven hornworts for components of plastid developmental pathways. We find intriguing differences among hornworts and specifically highlight that pathway components involved in regulating plastid development and biogenesis were differentially lost in this group of bryophytes. In combination with ancestral state reconstruction, our data suggest that hornworts have reverted back to a monoplastidic phenotype due to the combined loss of two plastid division-associated genes: ARC3 and FtsZ2.

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