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dc.contributor.authorMacLeod, Alexander I
dc.contributor.authorRaval, Parth K
dc.contributor.authorStockhorst, Simon
dc.contributor.authorKnopp, Michael R
dc.contributor.authorFrangedakis, Eftychios
dc.contributor.authorGould, Sven B
dc.date.accessioned2022-03-30T02:30:37Z
dc.date.available2022-03-30T02:30:37Z
dc.date.issued2022
dc.date.submitted2022-01-26
dc.identifier.issn1664-462X
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/335504
dc.description.abstractThe 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 independently 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. In this study, we screened genomic and transcriptomic data of eleven hornworts for components of plastid developmental pathways. We found 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. Our results also confirmed that hornworts underwent significant instances of gene loss, underpinning that the gene content of this group is significantly lower than other bryophytes and tracheophytes. 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, namely, ARC3 and FtsZ2.
dc.languageen
dc.publisherFrontiers Media SA
dc.subjectPlant Science
dc.subjectplastid evolution
dc.subjectbryophytes
dc.subjecthornworts
dc.subjectplant terrestrialization
dc.subjectplastid division
dc.titleLoss of Plastid Developmental Genes Coincides With a Reversion to Monoplastidy in Hornworts.
dc.typeOther
dc.date.updated2022-03-30T02:30:36Z
prism.publicationNameFront Plant Sci
prism.volume13
dc.identifier.doi10.17863/CAM.82935
dcterms.dateAccepted2022-02-04
rioxxterms.versionofrecord10.3389/fpls.2022.863076
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
dc.identifier.eissn1664-462X
cam.issuedOnline2022-03-14


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