scholarly journals A new source of cytoplasmic male sterility in pearl millet: RFLP analysis of mitochondrial DNA

Genome ◽  
1994 ◽  
Vol 37 (3) ◽  
pp. 482-486 ◽  
Author(s):  
V. Sujata ◽  
S. Sivaramakrishnan ◽  
K. N. Rai ◽  
K. Seetha
Keyword(s):  
Mitochondrial Dna ◽  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Southern Blot ◽  
Pearl Millet ◽  
Pennisetum Glaucum ◽  
Blot Hybridization ◽  
Southern Blot Hybridization ◽  
Early Gene ◽  
Male Sterile

A new source of cytoplasmic male sterility (cms) in pearl millet (Pennisetum glaucum (L.) R.Br.) derived from a half-sib progeny of the Early Gene Pool (EGP 261) and used in a male-sterile line, ICMA 90111, was compared with other known cms sources for RFLP of mitochondrial (mt) DNA. Southern blot hybridization of mtDNA from ICMA 90111 digested with several restriction enzymes and probed with homologous mtDNA clones from pearl millet and heterologous gene clones from maize and wheat revealed the RFLP patterns of ICMA 90111 distinct from others studied so far. The dendrogram of male-sterile lines constructed from the Southern blot hybridization patterns indicated that ICMA 90111 represents a separate group. Our results suggest that this source of cms is unique in several respects.Key words: Pennisetum glaucum, cytoplasmic male sterility, mitochondrial DNA, RFLP.

scholarly journals The Dynamics of Gynodioecy in Plantago lanceolatu L. II. Mode of Action and Frequencies of Restorer Alleles

Genetics ◽  
1997 ◽  
Vol 147 (3) ◽  
pp. 1317-1328
Author(s):  
Anita A de Haan ◽  
Hans P Koelewijn ◽  
Maria P J Hundscheid ◽  
Jos M M Van Damme
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Allele Frequency ◽  
Mode Of Action ◽  
Male Fertility ◽  
Fertility Restoration ◽  
Plantago Lanceolata ◽  
Allele Frequencies ◽  
Male Sterile ◽  
Male Fertility Restoration

Male fertility in Plantago lanceolata is controlled by the interaction of cytoplasmic and nuclear genes. Different cytoplasmic male sterility (CMS) types can be either male sterile or hermaphrodite, depending on the presence of nuclear restorer alleles. In three CMS types of P. lanceolata (CMSI, CMSIIa, and CMSIIb) the number of loci involved in male fertility restoration was determined. In each CMS type, male fertility was restored by multiple genes with either dominant or recessive action and capable either of restoring male fertility independently or in interaction with each other (epistasis). Restorer allele frequencies for CMSI, CMSIIa and CMSIIb were determined by crossing hermaphrodites with “standard” male steriles. Segregation of male steriles vs. non-male steriles was used to estimate overall restorer allele frequency. The frequency of restorer alleles was different for the CMS types: restorer alleles for CMSI were less frequent than for CMSIIa and CMSIIb. On the basis of the frequencies of male steriles and the CMS types an “expected” restorer allele frequency could be calculated. The correlation between estimated and expected restorer allele frequency was significant.

scholarly journals INHERITANCE OF FERTILITY RESTORATION INVOLVING WILD ABORTIVE CYTOPLASMIC MALE STERILITY SYSTEM IN RICE (Oryza sativa L.)

2011 ◽  
Vol 24 (1) ◽  
pp. 33-40
Author(s):  
M. J. Hasan ◽  
M. U. Kulsum ◽  
A. Ansari ◽  
A. K. Paul ◽  
P. L. Biswas
Keyword(s):  
Oryza Sativa ◽  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Gene Action ◽  
Oryza Sativa L ◽  
Fertility Restoration ◽  
Dominant Gene ◽  
Recessive Gene ◽  
Male Sterile ◽  
Male Sterile Line

Inheritance of fertility restoration was studied in crosses involving ten elite restorer lines of rice viz. BR6839-41-5-1R, BR7013-62-1-1R, BR7011-37-1-2R, BR10R, BR11R, BR12R, BR13R, BR14R, BR15R and BR16R and one male sterile line Jin23A with WA sources of cytoplasmic male sterility. The segregation pattern for pollen fertility of F2 and BC1 populations of crosses involving Jin23A indicated the presence of two independent dominant fertility restoring genes. The mode of action of the two genes varied in different crosses revealing three types of interaction, i.e. epistasis with dominant gene action, epistasis with recessive gene action, and epistasis with incomplete dominance.DOI: http://dx.doi.org/10.3329/bjpbg.v24i1.16997

Chromosomal Assignment of HepG2 3′-Directed Partial cDNA Sequences by Southern Blot Hybridization Using Monochromosomal Hybrid Cell Panels

Genomics ◽  
1994 ◽  
Vol 22 (1) ◽  
pp. 127-136 ◽  
Author(s):  
Atsushi Fukushima ◽  
Kousaku Okubo ◽  
Hidehiko Sugino ◽  
Naohiro Hori ◽  
Ryo Matoba ◽  
...  
Keyword(s):  
Southern Blot ◽  
Hybrid Cell ◽  
Blot Hybridization ◽  
Southern Blot Hybridization ◽  
Chromosomal Assignment ◽  
Cdna Sequences ◽  
Partial Cdna ◽  
Monochromosomal Hybrid

scholarly journals Genome analysis of HTLV-I virus in PA positive and IF negative healthy donors by southern blot hybridization.

1988 ◽  
Vol 34 (1) ◽  
pp. 50-52
Author(s):  
Chieko Suzuki ◽  
Noriko Tomita ◽  
Eiichi Uchiyama ◽  
Akio Ishii ◽  
Takeshi Nishizaki ◽  
...  
Keyword(s):  
Southern Blot ◽  
Genome Analysis ◽  
Blot Hybridization ◽  
Southern Blot Hybridization ◽  
Healthy Donors

scholarly journals Detection of “Candidatus Helicobacter suis” in Gastric Samples of Pigs by PCR: Comparison with Other Invasive Diagnostic Techniques

2000 ◽  
Vol 38 (3) ◽  
pp. 1131-1135 ◽  
Author(s):  
D. De Groote ◽  
R. Ducatelle ◽  
L. J. van Doorn ◽  
K. Tilmant ◽  
A. Verschuuren ◽  
...  
Keyword(s):  
Southern Blot ◽  
Blot Hybridization ◽  
Southern Blot Hybridization ◽  
Epidemiological Studies ◽  
Diagnostic Techniques ◽  
Diagnostic Methods ◽  
Giemsa Staining ◽  
Rapid Urease Test ◽  
Pcr Assay ◽  
Urease Test

Recently, a new 16S ribosomal DNA-based PCR assay was developed for the specific detection of “Candidatus Helicobacter suis” (former “Gastrospirillum suis”) in porcine gastric samples. In the present study, this PCR assay was compared to three other invasive diagnostic methods (rapid urease test, immunohistochemistry, histologic analysis by Giemsa staining). Antral stomach samples from 200 slaughterhouse pigs from Belgium and The Netherlands were examined. Bacterial presence was determined in 77% (154 of 200) of the samples by PCR in combination with Southern blot hybridization, 56% (111 of 200) of the samples by immunohistochemistry, 61% (122 of 200) of the samples by urease testing (20 h postinoculation [p.i.]), 36% (71 of 200) of the samples by urease testing (3 h p.i.), and 33% (65 of 200) of the samples by Giemsa staining. The intrinsic specificity of the PCR assay was assessed by Southern blot analysis with an “Candidatus H. suis”-specific probe and sequencing of PCR products. Interassay sensitivity and specificity values were assessed for each test by pairwise comparisons between tests. Agreement between tests was evaluated by calculating Cohen's kappa coefficient. From that analysis, the PCR assay was considered the most reliable benchmark. Microscopic detection of immunohistochemically labeled or Giemsa-stained “Candidatus H. suis” cells in stomach sections proved to be highly specific (100%) but relatively insensitive (72 and 42%, respectively) compared to the PCR assay. A longer incubation time of the urease test improved its sensitivity considerably (74 versus 55%) but was accompanied by a loss of specificity (72 versus 93%). In conclusion, we found the “Candidatus H. suis”-specific PCR assay to be a sensitive and reliable diagnostic method for the detection of “Candidatus H. suis” in the stomachs of pigs and could prove to be a valuable tool for further epidemiological studies both for “Candidatus H. suis”- and for “Helicobacter heilmannii” type 1-related research.

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