scholarly journals Characterization of a Lignified Secondary Phloem Fibre-deficient Mutant of Jute (Corchorus capsularis)

2004 ◽  
Vol 93 (2) ◽  
pp. 211-220 ◽  
Author(s):  
G. SENGUPTA
Keyword(s):  
Deficient Mutant ◽  
Secondary Phloem ◽  
Corchorus Capsularis ◽  
Phloem Fibre

Characterization of a 7S globulin-deficient mutant of soybean (Glycine max (L.) Merrill)

1998 ◽  
Vol 258 (3) ◽  
pp. 208-214 ◽  
Author(s):  
M. Hayashi ◽  
K. Harada ◽  
T. Fujiwara ◽  
K. Kitamura
Keyword(s):  
Glycine Max ◽  
Deficient Mutant ◽  
Glycine Max L ◽  
7S Globulin

scholarly journals Characterization of a Bacillus subtilis Thermosensitive Teichoic Acid-Deficient Mutant: Gene mnaA (yvyH) Encodes the UDP-N-Acetylglucosamine 2-Epimerase

2002 ◽  
Vol 184 (15) ◽  
pp. 4316-4320 ◽  
Author(s):  
Blazenka Soldo ◽  
Vladimir Lazarevic ◽  
Harold M. Pooley ◽  
Dimitri Karamata
Keyword(s):  
Cell Wall ◽  
Bacillus Subtilis ◽  
Cell Morphology ◽  
Teichoic Acid ◽  
Mutant Gene ◽  
Deficient Mutant ◽  
Phosphate Content ◽  
Nonpermissive Temperature ◽  
Coccoid Cell

ABSTRACT The Bacillus subtilis thermosensitive mutant ts-21 bears two C-G→T-A transitions in the mnaA gene. At the nonpermissive temperature it is characterized by coccoid cell morphology and reduced cell wall phosphate content. MnaA converts UDP-N-acetylglucosamine into UDP-N-acetylmannosamine, a precursor of the teichoic acid linkage unit.

scholarly journals Development and characterization of a new rice cultivar, ‘Chikushi-kona 85’, derived from a starch-branching enzyme IIb-deficient mutant line

2018 ◽  
Vol 68 (2) ◽  
pp. 278-283 ◽  
Author(s):  
Takuya Wada ◽  
Osamu Yamaguchi ◽  
Masayuki Miyazaki ◽  
Katsunori Miyahara ◽  
Masafumi Ishibashi ◽  
...  
Keyword(s):  
Rice Cultivar ◽  
Mutant Line ◽  
Deficient Mutant ◽  
Branching Enzyme ◽  
Starch Branching Enzyme

scholarly journals Selection and characterization of a glucokinase-deficient mutant of Tetrahymena thermophila.

1982 ◽  
Vol 2 (4) ◽  
pp. 378-385 ◽  
Author(s):  
C T Roberts ◽  
J E Lavine ◽  
D E Morse
Keyword(s):  
Gene Expression ◽  
Mutant Allele ◽  
Tetrahymena Thermophila ◽  
Molecular Defect ◽  
Deficient Mutant ◽  
Cellular Processes ◽  
Inhibition Of Growth ◽  
Selection Of ◽  
Enzymatic Defect

We have isolated a mutant of Tetrahymena thermophila that is resistant to inhibition of growth by the glucose analog 2-deoxyglucose. The mutant exhibits a deficiency in a cytoplasmic glucokinase. This enzymatic defect and the attendant inability to convert 2-deoxyglucose to toxic phosphorylated derivatives is apparently the sole basis for the mutant phenotype since transport of glucose and 2-deoxyglucose is unimpaired; there is no elevation of glucose-6-phosphatase activity, which could decrease the level of toxic 2-deoxyglucose metabolites. Genetic analyses have shown that the mutant allele is recessive and inherited as a single Mendelian mutation. The glucokinase-deficient strain described here is useful for the selection of other mutants in this organism and for the investigation of various cellular processes initiated or modulated by glucose and its analogs. We have exploited the molecular defect in this strain to investigate the initial steps in the cyclic AMP-mediated repression of galactokinase gene expression which is caused by glucose.

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