Comparisons Among Two Fertile and Three Male-Sterile Mitochondrial Genomes of Maize From: Genetics | Date: October 1, 2007| Author: | Copyright Genetics Society of America Oct 2007. Provided by ProQuest LLC.Copyright information

ABSTRACT

We have sequenced five distinct mitochondrial genomes in maize: two fertile cytotypes (NA and the previously reported NB) and three cytoplasmic-male-sterile cytotypes (CMS-C, CMS-S, and CMS-T). Their genome sizes range from 535,825 bp in CMS-T to 739,719 bp in CMS-C. Large duplica tions (0.5-120 kb) account for most of the size increases. Plastid DNA accounts for 2.3-4.6% of each mitochondrial genome. The genomes share a minimum set of 51 genes for 33 conserved proteins, three ribosomal RNAs, and 15 transfer RNAs. Numbers of duplicate genes and plastid-derived tRNAs vary among ...

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