Genic Male Sterility

Kaul, M. L. H.

doi:10.1007/978-3-642-83139-3_2

Cited by 71 publications

(57 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Shifriss and Frankel [38] and Horner and Rogers [18] observed that the sterile line could form an abnormal tetrad but could not produce normal pollen for the development of tapetal cells. Kaul [39] and Bhargawa [40] both thought that pollen development was abnormal at the beginning of meiosis. It is necessary to examine the pollen-abortive stage of our CMS line to further analyze gene expression and enzyme activity.…”

Section: Resultsmentioning

confidence: 99%

Mitochondrial Cytochrome c Oxidase and F1Fo-ATPase Dysfunction in Peppers (Capsicum annuum L.) with Cytoplasmic Male Sterility and Its Association with orf507 and Ψatp6-2 Genes

Huang

Chuan-chuan

et al. 2013

IJMS

View full text Add to dashboard Cite

Cytoplasmic male sterility (CMS) in pepper (Capsicum annuum L.) has been associated with novel genes in the mitochondria, such as orf507 and Ψatp6-2. Plant sterility has been proved to result from the rearrangement of the mitochondrial genome. Previous studies have demonstrated that orf507 is co-transcribed with the cox II gene, and Ψatp6-2 is truncated at the 3′ region of the atp6-2 that is found in the maintainer line. Until this time, little has been known about the relationship between the novel gene and the function of its corresponding enzyme in mitochondria from the CMS pepper line. Moreover, the aberrant function of the mitochondrial enzymes is seldom reported in pepper. In this study, we observed that anther abortion occurred after the tetrad stage in the CMS line (HW203A), which was accompanied by premature programmed cell death (PCD) in the tapetum. The spatiotemporal expression patterns of orf507 and Ψatp6-2 were analyzed together with the corresponding enzyme activities to investigate the interactions of the genes and mitochondrial enzymes. The two genes were both highly expressed in the anther. The orf507 was down-regulated in HW203A (CMS line), with nearly no expression in HW203B (the maintainer line). In contrast, the cytochrome c oxidase activity in HW203A showed the opposite trend, reaching its highest peak at the tetrad stage when compared with HW203B at the same stage. The Ψatp6-2 in the CMS line was also down-regulated, but it was up-regulated in the maintainer line. The corresponding F1Fo-ATPase activity in the CMS line was gradually decreased along with the development of the anther, which showed the same trend for Ψatp6-2 gene expression. On the contrary, with up-regulated gene expression of atp6-2 in the maintainer line, the F1Fo-ATPase activity sharply decreased after the initial development stage, but gradually increased following the tetrad stage, which was contrary to what happened in the CMS line. Taken together, all these results may provide evidence for the involvement of aberrant mitochondrial cytochrome c oxidase and F1Fo-ATPase in CMS pepper anther abortion. Moreover, the novel orf507 and Ψatp6-2 genes in the mitochondria may be involved in the dysfunction of the cytochrome c oxidase and F1Fo-ATPase, respectively, which are responsible for the abortion of anthers in the CMS line.

show abstract

Section: Resultsmentioning

confidence: 99%

Mitochondrial Cytochrome c Oxidase and F1Fo-ATPase Dysfunction in Peppers (Capsicum annuum L.) with Cytoplasmic Male Sterility and Its Association with orf507 and Ψatp6-2 Genes

Huang

Chuan-chuan

et al. 2013

IJMS

View full text Add to dashboard Cite

show abstract

“…Ashburner, 1989). Mutations of large effect on fitness, such as recessive lethals or male‐sterility mutations, also contribute to inbreeding depression in plants ( Crumpacker, 1967; Klekowski, 1970, 1984, 1988b; Ohnishi, 1982; Hedrick, 1987; Kaul, 1988; Willis, 1992).…”

Section: Introductionmentioning

confidence: 99%

The contribution of male-sterility mutations to inbreeding depression in Mimulus guttatus

Willis

1999

Heredity

View full text Add to dashboard Cite

The magnitude of inbreeding depression can in¯uence many aspects of a population's ecology and evolution, including the nature of selection acting on the mating system and the chances that the population will go extinct during periods of small population size. If inbreeding depression is caused primarily by recessive mutations of large e ect on ®tness, such as lethals or steriles, then it is expected to be purged rapidly by selection with moderate amounts of inbreeding. In contrast, inbreeding depression primarily caused by many genes with mild e ects on ®tness will not be rapidly purged with inbreeding, so it should be a more resilient barrier to the evolution of self-fertilization and a more signi®cant threat to the survival of endangered species. Here I show that recessive male-sterility alleles at individual loci are common in a primarily outcrossing population of the plant Mimulus guttatus. Despite the high frequency of these major mutations, most of the inbreeding depression for male fertility and cumulative measures of lifetime ®tness results from more mildly deleterious alleles. Malesterility alleles contribute to 31% of the inbreeding depression for the fraction of viable pollen grains, and to 26% of the inbreeding depression for total ®tness. These results suggest that most of the inbreeding depression for male fertility in this population would not be purged, in the short term, with moderate inbreeding.

show abstract

“…Environment-sensitive genic male sterility (EGMS) is reportedly governed by a single recessive gene in most crops except wheat and Vaccinium, in which it was found to be controlled by three recessive genes or by polygenes (Kaul, 1988) . Photosensitive genic male sterility (PGMS) in rice is controlled by a single recessive gene (Shi, 1985 ;Shi & Deng, 1986 ;Feng et al ., 1985) .…”

Section: Introductionmentioning

confidence: 99%

Genetics of thermosensitive genic male sterility in rice

Borkakati

Virmani

1996

Euphytica

View full text Add to dashboard Cite

Inheritance of thermosensitive genic male sterility (TGMS) in Norin PL12 and IR32364TGMS and their allelic relationship were studied from F1, F2 testcross (TC) and F3 generations of the crosses made with the two mutants and several fertile tester parents . F2 , TC and F3 segregation behavior for pollen and spikelet fertility indicated that the TGMS trait in the two mutants was controlled by a single recessive gene . Allelic relationship studies indicated that TGMS genes of the two mutants were different . Since TGMS gene in Norin PL12 has been designated as tms2, the TGMS gene present in IR32364TGMS is tentatively designated as tms3(t) until allelic test is done with another TGMS gene (tmsl) reported from China in a line 5460S seeds of which were not available.

show abstract

Genic Male Sterility

Cited by 71 publications

References 0 publications

Mitochondrial Cytochrome c Oxidase and F1Fo-ATPase Dysfunction in Peppers (Capsicum annuum L.) with Cytoplasmic Male Sterility and Its Association with orf507 and Ψatp6-2 Genes

Mitochondrial Cytochrome c Oxidase and F1Fo-ATPase Dysfunction in Peppers (Capsicum annuum L.) with Cytoplasmic Male Sterility and Its Association with orf507 and Ψatp6-2 Genes

The contribution of male-sterility mutations to inbreeding depression in Mimulus guttatus

Genetics of thermosensitive genic male sterility in rice

Contact Info

Product

Resources

About