In organello mitochondrial DNA and RNA synthesis in fertile and cytoplasmic male sterile Zea mays L

1986 ◽  
Vol 11 (2) ◽  
pp. 151-160 ◽  
Author(s):  
John E. Carlson ◽  
Gerald L. Brown ◽  
Roger J. Kemble
Keyword(s):  
Zea Mays ◽  
Mitochondrial Dna ◽  
Rna Synthesis ◽  
Zea Mays L ◽  
Male Sterile ◽  
Cytoplasmic Male Sterile ◽  
Dna And Rna ◽  
In Organello ◽  
Dna And Rna Synthesis

VARIATION IN THE DIFFERENTIAL LEAF ABSORPTION OF A HIGH-MOLECULAR-WEIGHT PHOSPHATE BY PLANTS OF DIFFERING CYTOPLASMS OF THREE CORN (ZEA MAYS) INBREDS

1975 ◽  
Vol 17 (2) ◽  
pp. 211-216 ◽  
Author(s):  
Dirk Barèl ◽  
Peter A. Peterson
Keyword(s):  
Molecular Weight ◽  
Zea Mays ◽  
Membrane Permeability ◽  
High Molecular Weight ◽  
Zea Mays L ◽  
Male Sterile ◽  
Cytoplasmic Male Sterile ◽  
Rate Of Absorption

The absorption of foliarly applied tripolyphosphate is significantly greater in two different cytoplasmically male-sterile lines (Tcms and Ccms) of Zea mays L. than in isolines having normal (N) cytoplasm. A third cytoplasmic male-sterile (Scms) does not differ from the normal isoline in its absorption of foliarly applied tripolyphosphate. In none of the three comparisons of each of the cytoplasmic male-sterile lines and its normal isoline is there a difference in orthophosphate absorption, nor do any of the lines show a difference in the translocation of either source of phosphorus (P) inside the plant 10 days after application. The differential uptake of the large molecular P compound is not a property of all cytoplasmic male steriles, indicating that all cytoplasmic male steriles, do not have similar membrane permeability properties. Differences were found in the rate of absorption among lines for foliarly applied phosphates.

Permeability changes induced by Helminthosporium maydis, race T, toxin

1972 ◽  
Vol 50 (11) ◽  
pp. 2167-2170 ◽  
Author(s):  
V. E. Gracen ◽  
C. O. Grogan ◽  
M. J. Forster
Keyword(s):  
Zea Mays ◽  
Electrolyte Leakage ◽  
Treatment Duration ◽  
Zea Mays L ◽  
Cellular Membranes ◽  
Male Sterile ◽  
Cytoplasmic Male Sterile ◽  
Permeability Changes ◽  
Culture Filtrates ◽  
Toxic Culture

We have demonstrated that Helminthosporium maydis, race T, toxic culture filtrates induce electrolyte leakage from treated susceptible corn (Zea mays L.) leaf cells. In a comparison of several cytoplasmic versions of the inbred W182BN, those versions susceptible to the fungus and its toxin in the field demonstrated induced electrolyte leakage while versions rated resistant in the field did not. The total amount of electrolyte leakage of leaves from susceptible Texas cytoplasmic male sterile plants increased with increasing toxin concentrations. Leaves from non-male sterile and resistant cytoplasmic male sterile plants, although much more resistant than T cytoplasm leaves, were not immune to the toxin. If the toxic filtrate concentration or the treatment duration were greatly increased, leaves of the resistant plants exhibited some electrolyte leakage. The electrolyte leakage suggests damage to cellular membranes. This damage may be the result of mitochondrial inactivation induced by the toxin, or it may result from the effect of the toxin on other cellular sites.

COMPARISON OF MORPHOLOGY OF LEAVES FROM NORMAL, CYTOPLASMIC MALE–STERILE AND RESTORED VERSIONS OF ZEA MAYS

1975 ◽  
Vol 17 (2) ◽  
pp. 167-171
Author(s):  
Patricia Sarvella ◽  
C. O. Grogan ◽  
D. L. Myhre
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Epidermal Cells ◽  
Leaf Thickness ◽  
Normal Male ◽  
Male Sterile ◽  
Morphological Variations ◽  
Cytoplasmic Male Sterile

Leaf thickness, number of trichomes, number and size of stomatal and epidermal cells were compared in normal, male-sterile, and restored versions of Zea mays L. Differences in leaf thickness were obtained between lines, but not between versions (except for one line). Differences in trichomes between versions were found in two of the five lines. Results from the length and width of stomatal and epidermal cells in the hybrid F44 × F6 were like those of the trichomes. Therefore, the large morphological variations between the internodes of normal, male-sterile, and restored versions of corn which were previously observed do not extend to the leaves.

The role of p53 in regulating genomic stability when DNA and RNA synthesis are inhibited

1995 ◽  
Vol 20 (10) ◽  
pp. 431-434 ◽  
Author(s):  
Olga B. Chernova ◽  
Michail V. Chernov ◽  
Munna L. Agarwal ◽  
William R. Taylor ◽  
George R. Stark
Keyword(s):  
Rna Synthesis ◽  
Genomic Stability ◽  
Dna And Rna ◽  
Dna And Rna Synthesis
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