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Plant nuclear gene knockout reveals a role in plastid division for the homolog of the bacterial cell division protein FtsZ, an ancestral tubulin
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Bundle sheet cells and cell-specific plastid development in Arabidopsis leaves. Kinsman EA, Pyke KA: Development 1998, 125:1815-1822. ??Significance: The characterisation of a mutant for chloroplast structure shows that the development of those organelles is differentially regulated between cell types. Findings: The mutant dov is characterised by the presence of highly anomalous chloroplasts in mesophyll cells, whereas the bundle sheet cells are unaffected and present normal chloroplasts.
Plant nuclear gene knockout reveals a role in plastid division for the homolog of the bacterial cell division pro-
281
tein FM, an ancestral tubulin. Strepp R, Scholz S, Kruse S, Speth V, Reski R: Proc Nat/ Acad Sci USA 1998, 95:43884373. ?? * Significance: An original knockout strategy shows that an ancestral tubulin is involved specifically in chloroplast division. Mitochondria, however, are not affected, which shows the complex endosymbiotic origin of organelles in the eukaryote cell. Findings: Taking advantage of a high homologous recombination frequency in the moss Physcomitrella patens, seven knockouts in the homologue of FtsZ involved in the bacterial cell division are isolated. Various cell types of these moss knockouts present giant elongated chloroplasts as a consequence of lack of the constriction division of this organelle. Mitochondria are not affected.
Bundle sheet cells and cell-specific plastid development in Arabidopsis leaves. Kinsman EA, Pyke KA: Development 1998, 125:1815-1822. ??Significance: The characterisation of a mutant for chloroplast structure shows that the development of those organelles is differentially regulated between cell types. Findings: The mutant dov is characterised by the presence of highly anomalous chloroplasts in mesophyll cells, whereas the bundle sheet cells are unaffected and present normal chloroplasts.
Plant nuclear gene knockout reveals a role in plastid division for the homolog of the bacterial cell division pro-
281
tein FM, an ancestral tubulin. Strepp R, Scholz S, Kruse S, Speth V, Reski R: Proc Nat/ Acad Sci USA 1998, 95:43884373. ?? * Significance: An original knockout strategy shows that an ancestral tubulin is involved specifically in chloroplast division. Mitochondria, however, are not affected, which shows the complex endosymbiotic origin of organelles in the eukaryote cell. Findings: Taking advantage of a high homologous recombination frequency in the moss Physcomitrella patens, seven knockouts in the homologue of FtsZ involved in the bacterial cell division are isolated. Various cell types of these moss knockouts present giant elongated chloroplasts as a consequence of lack of the constriction division of this organelle. Mitochondria are not affected.