Chimeric mitochondrial genes expressed in the C male-sterile cytoplasm of maize

1991 ◽  
Vol 20 (6) ◽  
pp. 475-482 ◽  
Author(s):  
R. E. Dewey ◽  
D. H. Timothy ◽  
C. S. Levings
Keyword(s):  
Mitochondrial Genes ◽  
Male Sterile ◽  
Male Sterile Cytoplasm

Mitochondrial DNA rearrangements and transcriptional alterations in the male-sterile cytoplasm of Ogura radish

1988 ◽  
Vol 8 (4) ◽  
pp. 1474-1480
Author(s):  
C A Makaroff ◽  
J D Palmer
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Mitochondrial Genes ◽  
Nuclear Genes ◽  
Male Sterile ◽  
Transcriptional Pattern ◽  
Transcriptional Alterations ◽  
Mitochondrial Dnas ◽  
Male Sterile Cytoplasm ◽  
Chloroplast Dnas

Maternally inherited mutations, such as cytoplasmic male sterility, provide useful systems in which to study the function of plant mitochondrial genomes and also their interaction with nuclear genes. We have studied the organization and expression of the organelle genomes of the male-sterile cytoplasm of Ogura radish and compared them with those of normal radish to identify alterations that might be involved in cytoplasmic male sterility. The chloroplast DNAs of Ogura and normal radish are virtually indistinguishable, whereas their mitochondrial DNAs are highly rearranged. Alignment of a restriction map constructed for the 257-kilobase Ogura mitochondrial genome with that published for the 242-kilobase genome of normal radish reveals that the two mitochondrial DNAs differ in arrangement by at least 10 inversions. The transcriptional patterns of several known mitochondrial genes and of rearranged mitochondrial sequences were examined in three nuclear backgrounds. Altered transcripts were observed for three mitochondrial genes, atpA, atp6, and coxI. Rearrangements map near each of these genes and therefore may be responsible for their transcriptional alterations. Radish nuclear genes that restore fertility to the Ogura cytoplasm have no effect on the atp6 and coxI transcripts, but do influence the atpA transcriptional pattern.

scholarly journals Mitochondrial DNA rearrangements and transcriptional alterations in the male-sterile cytoplasm of Ogura radish.

1988 ◽  
Vol 8 (4) ◽  
pp. 1474-1480 ◽  
Author(s):  
C A Makaroff ◽  
J D Palmer
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Mitochondrial Genes ◽  
Nuclear Genes ◽  
Male Sterile ◽  
Transcriptional Pattern ◽  
Transcriptional Alterations ◽  
Mitochondrial Dnas ◽  
Male Sterile Cytoplasm ◽  
Chloroplast Dnas

Maternally inherited mutations, such as cytoplasmic male sterility, provide useful systems in which to study the function of plant mitochondrial genomes and also their interaction with nuclear genes. We have studied the organization and expression of the organelle genomes of the male-sterile cytoplasm of Ogura radish and compared them with those of normal radish to identify alterations that might be involved in cytoplasmic male sterility. The chloroplast DNAs of Ogura and normal radish are virtually indistinguishable, whereas their mitochondrial DNAs are highly rearranged. Alignment of a restriction map constructed for the 257-kilobase Ogura mitochondrial genome with that published for the 242-kilobase genome of normal radish reveals that the two mitochondrial DNAs differ in arrangement by at least 10 inversions. The transcriptional patterns of several known mitochondrial genes and of rearranged mitochondrial sequences were examined in three nuclear backgrounds. Altered transcripts were observed for three mitochondrial genes, atpA, atp6, and coxI. Rearrangements map near each of these genes and therefore may be responsible for their transcriptional alterations. Radish nuclear genes that restore fertility to the Ogura cytoplasm have no effect on the atp6 and coxI transcripts, but do influence the atpA transcriptional pattern.

Mitochondrial genes are involved in the fertility transformation of the thermosensitive male-sterile line YS3038 in wheat

2021 ◽  
Vol 41 (10) ◽  
Author(s):  
Yucui Han ◽  
Yujie Gao ◽  
Hao Zhou ◽  
Xiaoguang Zhai ◽  
Qin Ding ◽  
...  
Keyword(s):  
Mitochondrial Genes ◽  
Male Sterile ◽  
Male Sterile Line

Fertility Restoration of Male‐Sterile Cytoplasm in Wild Sunflowers 1

Crop Science ◽  
1975 ◽  
Vol 15 (5) ◽  
pp. 724-726 ◽  
Author(s):  
Juan Dominguez Gimenez ◽  
Gerhardt N. Fick
Keyword(s):  
Fertility Restoration ◽  
Male Sterile ◽  
Male Sterile Cytoplasm

scholarly journals Differential RNA Editing of Mitochondrial Genes in WA-Cytoplasmic Based Male Sterile Line Pusa 6A, and Its Maintainer and Restorer Lines

Rice Science ◽  
2019 ◽  
Vol 26 (5) ◽  
pp. 282-289
Author(s):  
Umakanta Ngangkham ◽  
Swarup Kumar Parida ◽  
Ashok Kumar Singh ◽  
Trilochan Mohapatra
Keyword(s):  
Rna Editing ◽  
Mitochondrial Genes ◽  
Male Sterile ◽  
Male Sterile Line

The effect of genotype × cytoplasm interaction on meiotic behaviour of maize chromosomes

Genome ◽  
1992 ◽  
Vol 35 (4) ◽  
pp. 653-658 ◽  
Author(s):  
M. M. Kruleva ◽  
A. B. Korol ◽  
T. G. Dankov ◽  
V. G. Skorpan ◽  
I. A. Preygel
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Relative Stability ◽  
Chiasma Frequency ◽  
Chiasma Formation ◽  
Meiotic Behaviour ◽  
Male Sterile ◽  
Maize Hybrids ◽  
Male Sterile Cytoplasm ◽  
Cytoplasmic Sterility

The effect of four isogenic cytoplasmic types, normal, Salvador, Texas, and Charrua (the latter three causing male sterility), on the process of chiasma formation has been studied using two different maize hybrids. The cytoplasmic male sterility determinants have been shown to reduce the rate of interstitial exchanges per nucleus and per bivalent and the frequency of univalents. Increased variation between plants and relative stability of the intercellular variation within a plant have been observed for the parameters studied. It is concluded that the determinants of cytoplasmic sterility lower the probability of additional exchanges (relative to the obligate one) and reduce the frequency of premature disruption of one-exchange chromosome associations.Key words: maize, chiasma frequency, male sterile cytoplasm, univalent formation, genotype × cytoplasm interaction.

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