scholarly journals Enzymes Involved in the Postharvest Degradation of Sucrose in Beta vulgaris L. Root Tissue

1974 ◽  
Vol 53 (3) ◽  
pp. 507-508 ◽  
Author(s):  
Roger Wyse
Keyword(s):  
Beta Vulgaris ◽  
Root Tissue

Effect of Glyphosate on Membrane Permeability in Red Beet (Beta vulgaris) Root Tissue

Weed Science ◽  
1980 ◽  
Vol 28 (6) ◽  
pp. 671-673 ◽  
Author(s):  
R. A. Fletcher ◽  
P. Hildebrand ◽  
W. Akey
Keyword(s):  
Membrane Permeability ◽  
Beta Vulgaris ◽  
Concentration Measurement ◽  
Root Tissue ◽  
Distilled Water ◽  
Citrate Buffer ◽  
Red Beet

When discs of red beet (Beta vulgarisL.) root were immersed in various concentrations of glyphosate [N-(phosphonomethyl)glycine] either in phosphate (pH 6.8) or citrate (pH 6.2) buffer, no efflux of betacyanin occurred even after 1 week. This suggests that glyphosate had little or no effect on membrane permeability. When beet discs were immersed in distilled water containing glyphosate, the betacyanin efflux increased with time and concentration. Measurement of pH indicated that the solutions were strongly acidic at first, but tended to approach a pH of 6.0 over 8 h, after which time betacyanin efflux slowed down or stopped. The tissue was able to buffer the solutions sufficiently to prevent further efflux. When tissue discs were immersed in a series of citrate buffer ranging from pH 3 to 6.2, efflux occurred at pH 3 and slightly at pH 6.2. Efflux was not altered significantly with the addition of glyphosate.

scholarly journals The Respiratory Chain of Beetroot Mitochondria

1960 ◽  
Vol 13 (2) ◽  
pp. 109 ◽  
Author(s):  
JT Wiskich ◽  
RK Morton ◽  
RN Robertson
Keyword(s):  
Cytochrome C ◽  
Absorption Band ◽  
Beta Vulgaris ◽  
Respiratory Chain ◽  
Electron Acceptors ◽  
Root Tissue ◽  
Absorption Bands ◽  
Isolated Mitochondria ◽  
Ferrocytochrome C ◽  
Ferricytochrome C

Mitochondria were isolated from root tissue of red beetroot (Beta vulgaris L.) and the components of the respiratory chain for oxidation of succinate and of reduced diphosphopyridine nucleotide (DPNH) were studied. Succinate, DPNH, ferrocytochrome c, and malate were used as substrates, and 2,6-dichlorophenolindophenol, ferricytochrome c, and oxygen as hydrogen (electron) acceptors. DPNH was oxidized without addition of cytochrome c and malate without addition of DPN. These observations suggest that the respiratory chain was retained intact in the isolated mitochondria. Cytochromes b, C1. and c were identified spectroscopically by the positions of their characteristic ex-absorption bands. The very small amount of cytochrome c present may indicate some loss of this component during isolation of the mitochondria. An absorption band near 600 mp' was attributed to cytochromes (a+a3).

Plant regeneration from protoplasts of sugar beet (Beta vulgaris)

1995 ◽  
Vol 94 (2) ◽  
pp. 342-350 ◽  
Author(s):  
Steffen Lenzner ◽  
Kurt Zoglauer ◽  
Otto Schieder
Keyword(s):  
Plant Regeneration ◽  
Sugar Beet ◽  
Beta Vulgaris

Uniconazole-induced thermotolerance in soybean seedling root tissue

1990 ◽  
Vol 79 (1) ◽  
pp. 78-84 ◽  
Author(s):  
Abha Upadhyaya ◽  
Tim D. Davis ◽  
M. H. Larsen ◽  
R. H. Walser ◽  
N. Sankhla
Keyword(s):  
Root Tissue ◽  
Soybean Seedling ◽  
Seedling Root ◽  
Induced Thermotolerance
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