scholarly journals Ultraviolet-Induced Photodegradation of Cucumber (Cucumis sativus L.) Microsomal and Soluble Protein Tryptophanyl Residues in Vitro

1993 ◽  
Vol 101 (3) ◽  
pp. 947-953 ◽  
Author(s):  
C. R. Caldwell
Keyword(s):  
Cucumis Sativus ◽  
Soluble Protein ◽  
Cucumis Sativus L

scholarly journals Response of Cucumis sativus L. seedlings to Pb exposure

2009 ◽  
Vol 21 (3) ◽  
pp. 175-186 ◽  
Author(s):  
Jamile F. Gonçalves ◽  
Alexssandro G. Becker ◽  
Luciane B. Pereira ◽  
João B. T. da Rocha ◽  
Denise Cargnelutti ◽  
...  
Keyword(s):  
Cucumis Sativus ◽  
Soluble Protein ◽  
Chlorophyll Concentration ◽  
Dry Weight ◽  
Total Soluble Protein ◽  
Cucumis Sativus L ◽  
Cucumber Seedlings ◽  
Pb Exposure ◽  
Pb Concentration

In this study, the effects of lead (Pb) on growth, photosynthetic pigments concentration, lipid peroxidation, electrolyte leakage percentage (ELP), protein oxidation, aminolevulinate dehydratase (ALA-D; E.C. 4.2.1.24), ascorbate peroxidase (APX; E.C. 1.11.1.11), catalase (CAT; E.C. 1.11.1.6) and superoxide dismutase (SOD; E.C. 1.15.1.1) activities, and ascorbic acid (AsA), non-protein thiol groups (NPSH) and total soluble protein concentrations in cucumber seedlings (Cucumis sativus L.) were investigated. Seedlings were grown in vitro in an agar-solidified substrate containing three Pb levels as (C2H3O2)Pb.3H2O (0, 100, 400, and 1000 µmol L-1) for 10 d. Increasing Pb concentrations in substrate enhanced Pb concentration in both roots and shoot. Pb accumulated at a higher amount in roots. Root length and total fresh weight were decreased at the two highest Pb concentrations. Cucumber showed no reduction in shoot length and total dry weight at any Pb level. The highest Pb concentration decreased water content and ALA-D activity as well as increased malondialdehyde, carbonyls and total soluble protein concentrations. Carotenoids concentration enhanced at 100 and 400 µmol Pb L-1, while chlorophyll concentration and ELP were not affected by Pb stress. Activity of APX was inhibited while the activities of CAT and SOD were increased at all Pb concentrations. AsA was enhanced at 400 and 1000 µmol Pb L-1 whereas NPSH were increased only at the highest Pb concentration. Therefore, high Pb-exposure caused oxidative stress, and the antioxidant system of the cucumber seedlings was not sufficient to revert it, contributing for growth reduction.

Effect of Ethylene Inhibitors on in vitro Shoot Multiplication and their Impact on Ethylene Production in Cucumber (Cucumis sativus L.)

2006 ◽  
Vol 1 (3) ◽  
pp. 110-117 ◽  
Author(s):  
Vasudevan Ayyappan . ◽  
Selvaraj Natesan . ◽  
Ganapathi Andy . ◽  
Chang won Choi . ◽  
Manickavasagam Marka . ◽  
...  
Keyword(s):  
Cucumis Sativus ◽  
Ethylene Production ◽  
Shoot Multiplication ◽  
Ethylene Inhibitors ◽  
Cucumis Sativus L

IN VITRO MORPHOGENESIS OF SHOOTS FROM LEAF EXPLANTS OF CUCUMBER (CUCUMIS SATIVUS L.)

2006 ◽  
pp. 155-160 ◽  
Author(s):  
N. Selvarai ◽  
A. Ganapath ◽  
A. Vasudevan ◽  
G. Vengadesan ◽  
S. Kasthuri Rengan
Keyword(s):  
Cucumis Sativus ◽  
Leaf Explants ◽  
In Vitro Morphogenesis ◽  
Cucumis Sativus L

Effect of Hypocotyl Length on Morphogenesis of Explants of Cucumber (Cucumis sativus L.) in vitro

1992 ◽  
Vol 19 (2) ◽  
pp. 165
Author(s):  
RL Gambley ◽  
W Dodd
Keyword(s):  
Cucumis Sativus ◽  
Growth Regulators ◽  
Multiple Shoots ◽  
Root Production ◽  
Concomitant Increase ◽  
Hypocotyl Length ◽  
Rapid Reduction ◽  
Cucumis Sativus L ◽  
Murashige And Skoog Medium

Explants of cucumber seedlings having different lengths of hypocotyl attached were grown axenically on Murashige and Skoog medium supplemented with kinetin (2 mg L-1). Multiple shoots developed from the apical regions of all explants. In this tissue shoots may also develop at the base of the hypocotyl, but this response is strongly dependent upon the length of the hypocotyl. As the length of the hypocotyl increased beyond 5 mm, there was a rapid reduction in basal shoot numbers and a concomitant increase in root production. We suggest that these responses are related not to the ratio or concentration of endogenous growth regulators but to different regions of sensitivity to growth regulators along the hypocotyl.

scholarly journals IN VITRO ANTIOXIDANT AND ANTIMICROBIAL PROPERTIES OF CUCUMIS SATIVUS L. PEEL EXTRACTS

2018 ◽  
Vol 9 (1) ◽  
pp. 56-60 ◽  
Author(s):  
Sheila John ◽  
Priyadarshini S ◽  
Sarah Jane Monica ◽  
Sivaraj C ◽  
Arumugam P
Keyword(s):  
Cucumis Sativus ◽  
Antimicrobial Properties ◽  
Cucumis Sativus L
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