title: Covariations in the nuclear chloroplast transcriptome reveal a regulatory master-switch.
abstract: The evolution of the endosymbiotic progenitor into the chloroplast organelle was associated with the transfer of numerous chloroplast genes into the nucleus. Hence, inter-organellar signalling, and the co-ordinated expression of sets of nuclear genes, was set up to control the metabolic and developmental status of the chloroplast. Here, we show by the differential-expression analysis of 3,292 genes, that most of the 35 environmental and genetic conditions tested, including plastid signalling mutations, elicit only three main classes of response from the nuclear chloroplast transcriptome. Two classes, probably involving GUN (genomes uncoupled)-type plastid signalling, are characterized by alterations, in opposite directions, in the expression of largely overlapping sets of genes.
authors.affiliation: Abteilung für Pflanzenzüchtung und Ertragsphysiologie, Max Planck Institut für Züchtungsforschung, Carl-von-Linné-Weg 10, D-50829 Köln, Germany.
authors.forename: Erik
authors.initials: E
authors.lastname: Richly
authors.forename: Angela
authors.initials: A
authors.lastname: Dietzmann
authors.forename: Alexander
authors.initials: A
authors.lastname: Biehl
authors.forename: Joachim
authors.initials: J
authors.lastname: Kurth
authors.forename: Christophe
authors.initials: C
authors.lastname: Laloi
authors.forename: Klaus
authors.initials: K
authors.lastname: Apel
authors.forename: Francesco
authors.initials: F
authors.lastname: Salamini
authors.forename: Dario
authors.initials: D
authors.lastname: Leister
mesh_terms: D017360:Arabidopsis / Q000235:genetics* / Q000254:growth & development; D002467:Cell Nucleus / Q000235:genetics* / Q000378:metabolism; D002736:Chloroplasts / Q000235:genetics* / Q000378:metabolism; D020224:Expressed Sequence Tags; D020869:Gene Expression Profiling / Q000379:methods; D018506:Gene Expression Regulation, Plant; D005809:Genes, Regulator / Q000502:physiology*; D011401:Promoter Regions, Genetic; D018749:RNA, Plant / Q000032:analysis; D015398:Signal Transduction
chemical_list: D018749:RNA, Plant