scholarly journals Effect of cytoplasmic male-sterility in sorghum on host plant interaction with sorghum midge, Contarinia sorghicola

Euphytica ◽  
1994 ◽  
Vol 74 (1-2) ◽  
pp. 35-39 ◽  
Author(s):  
H. C. Sharma ◽  
P. Vidyasagar ◽  
C. V. Abraham ◽  
K. F. Nwanze
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Host Plant ◽  
Contarinia Sorghicola ◽  
Sorghum Midge ◽  
Plant Interaction

Diapause development in the sorghum midge, Contarinia sorghicola (Coquillett) (Diptera: Cecidomyiidae)

1987 ◽  
Vol 77 (4) ◽  
pp. 581-587 ◽  
Author(s):  
N. W. Forrester
Keyword(s):  
Host Plant ◽  
Sex Ratios ◽  
Dry Season ◽  
African Savanna ◽  
Minimum Threshold ◽  
Contarinia Sorghicola ◽  
Sorghum Midge ◽  
Diapause Development ◽  
Development Temperature

AbstractDiapause development in Contarinia sorghicola (Coquillett) was found to be favoured by temperatures in the range 23–30°C. Higher temperatures (30–35°C) were suboptimal, while diapause development proceeded much more slowly at lower temperatures (5–20°C). The rate of diapause development was linear, and no minimum threshold development temperature could be established from the range of temperatures studied (lowest 5°C). The period from diapause initiation to emergence (diapause development requirement plus a 2·5-week post-diapause development requirement) was predicted to be 6 months at 27°C and 7·5 months at 23°C. It is suggested that C. sorghicola probably evolved a diapause stage in response to the absence of its host-plant during the long dry season of the African savanna region. The possibility of strains with differential diapause reactions is raised. Sex ratios favoured females slightly.

CYTOPLASMIC MALE STERILITY. RESTORING GENES IN CORN

2020 ◽  
Vol 4 ◽  
pp. 40-48
Author(s):  
K.R. KANUKOVA ◽  
◽  
Z.I. BOGOTOVA ◽  
I.Kh. GAZAEV ◽  
S.P. APPAEV ◽  
...  
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility

scholarly journals A Quantitative Genetic Analysis of Nuclear-Cytoplasmic Male Sterility in Structured Populations of Silene vulgaris

Genetics ◽  
2001 ◽  
Vol 158 (2) ◽  
pp. 833-841 ◽  
Author(s):  
Douglas R Taylor ◽  
Matthew S Olson ◽  
David E McCauley
Keyword(s):  
Population Structure ◽  
Sex Ratio ◽  
Genetic Analysis ◽  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Sex Expression ◽  
Silene Vulgaris ◽  
Population Variance ◽  
Quantitative Genetic ◽  
Quantitative Genetic Analysis

Abstract Gynodioecy, the coexistence of functionally female and hermaphroditic morphs within plant populations, often has a complicated genetic basis involving several cytoplasmic male-sterility factors and nuclear restorers. This complexity has made it difficult to study the genetics and evolution of gynodioecy in natural populations. We use a quantitative genetic analysis of crosses within and among populations of Silene vulgaris to partition genetic variance for sex expression into nuclear and cytoplasmic components. We also use mitochondrial markers to determine whether cytoplasmic effects on sex expression can be traced to mitochondrial variance. Cytoplasmic variation and epistatic interactions between nuclear and cytoplasmic loci accounted for a significant portion of the variation in sex expression among the crosses. Source population also accounted for a significant portion of the sex ratio variation. Crosses among populations greatly enhanced the dam (cytoplasmic) effect, indicating that most among-population variance was at cytoplasmic loci. This is supported by the large among-population variance in the frequency of mitochondrial haplotypes, which also accounted for a significant portion of the sex ratio variance in our data. We discuss the similarities between the population structure we observed at loci that influence sex expression and previous work on putatively neutral loci, as well as the implications this has for what mechanisms may create and maintain population structure at loci that are influenced by natural selection.

scholarly journals Cytoplasmic Male Sterility-Associated Mitochondrial Gene orf312 Derived from Rice (Oryza sativa L.) Cultivar Tadukan

Rice ◽  
2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Ayumu Takatsuka ◽  
Tomohiko Kazama ◽  
Kinya Toriyama
Keyword(s):  
Oryza Sativa ◽  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Oryza Sativa L ◽  
Mitochondrial Gene ◽  
Expression Patterns ◽  
Promising Candidate ◽  
Illumina Hiseq ◽  
Reading Frame ◽  
Cms Line

Abstract Background Cytoplasmic male sterility (CMS) is a trait associated with non-functional pollen or anthers, caused by the interaction between mitochondrial and nuclear genes. Findings A Tadukan-type CMS line (TAA) and a restorer line (TAR) were obtained by successive backcrossing between the Oryza sativa cultivars Tadukan (a cytoplasmic donor) and Taichung 65 (a recurrent pollen parent). Using Illumina HiSeq, we determined whole-genome sequences of the mitochondria of TAA and screened the mitochondrial genome for the presence of open reading frame (orf) genes specific to this genome. One of these orf genes, orf312, showed differential expression patterns in TAA and TAR anthers at the meiotic and mature stages, with transcript amounts in TAR being less than those in TAA. The orf312 gene is similar to the previously described orf288, a part of which is among the components comprising WA352, a chimeric CMS-associated gene of wild-abortive-type CMS. Conclusions The orf312 gene is a promising candidate for CMS-associated gene in TAA.

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