Alterations in peroxidase activity and peroxidase isozymes in virus-infected plants

1970 ◽  
Vol 65 (1) ◽  
pp. 105-110 ◽  
Author(s):  
D. C. BATES ◽  
S. R. CHANT
Keyword(s):  
Peroxidase Activity ◽  
Peroxidase Isozymes

Peroxidase activity and relative mobility at anthesis in flax genotrophs and their F2 progeny: developmental and genetic effects

Genome ◽  
1991 ◽  
Vol 34 (4) ◽  
pp. 495-504 ◽  
Author(s):  
M. A. Fieldes ◽  
J. Ross
Keyword(s):  
Genetic Control ◽  
Peroxidase Activity ◽  
Stem Elongation ◽  
Genetic Regulation ◽  
Relative Mobility ◽  
Activity Data ◽  
Peroxidase Isozymes ◽  
Developmental Age ◽  
Total Peroxidase Activity ◽  
Flax Genotrophs

The genetic regulation of the environmentally induced heritable difference in peroxidase activity between Durrant's large (L) and small (S) flax genotrophs was examined in leaves from plants ranging in developmental age from 6 days before anthesis to 3 days after. Mean peroxidase activity was higher for S than L and intermediate for the reciprocal F2's from L × S and S × L crosses (F2L × S and F2S × L). However, activity increased with development and, since there were small but significant differences in the average developmental ages of L, S, F2L × S, and F2S × L plants, the effects of development on activity had to be taken into account in examining the F2 activity data for segregation. A regression method was used to remove developmental effects and, underlying these effects, total peroxidase activity appeared to be regulated by a single locus with two alleles and L dominance. Two other dimorphic loci, both described previously, were also examined. One regulates the presence-absence of septa hairs in the seed capsules and the other the relative mobility of anionic peroxidase isozymes. There was no phenotypic linkage between the three segregating parameters. The genetic control of activity appeared to regulate cationic rather than anionic activity. In addition, a relationship between activity and plant height indicated either that peroxidase activity is one of the factors regulating main stem elongation or that the locus regulating peroxidase activity is linked to one of the loci involved in the regulation of plant height.Key words: flax genotrophs, peroxidase, genetic control, development.

Enhanced peroxidase activity associated with the hypersensitive response of Solanum dulcamara to the gall mite Aceria cladophthirus (Acari: Eriophyoidea)

1991 ◽  
Vol 69 (10) ◽  
pp. 2192-2196 ◽  
Author(s):  
R. Bronner ◽  
E. Westphal ◽  
F. Dreger
Keyword(s):  
Peroxidase Activity ◽  
Electrophoretic Pattern ◽  
Solanum Dulcamara ◽  
Pathogenesis Related Proteins ◽  
Peroxidase Isozymes ◽  
Pathogenesis Related ◽  
Total Peroxidase Activity ◽  
Gall Mite ◽  
Plant Pathogenesis ◽  
Related Proteins

Peroxidase activity and its electrophoretic pattern were studied in resistant Solanum dulcamara leaves following infestation by the gall mite Aceria cladophthirus. Total peroxidase activity increased in infested leaves and was related to enhancement of three major peroxidase isozymes. The highest activity was found for the intercellular peroxidases. The extraction procedures used suggest that these peroxidases are pathogenesis-related proteins. These results are discussed with reference to the lack of lignin barrier around the mite-induced necrotic local lesions. Key words: Aceria cladophthirus, gall mite, Solanum dulcamara, resistant plant, pathogenesis-related proteins, peroxidases isozymes.

scholarly journals Effect of aluminium on peroxidase activity in roots of Al-sensitive and Al-resistant barley cultivars

2011 ◽  
Vol 48 (No. 2) ◽  
pp. 76-79
Author(s):  
L. Tamás ◽  
J. Huttová ◽  
I. Mistrík
Keyword(s):  
Oxidative Stress ◽  
Root Growth ◽  
Peroxidase Activity ◽  
Root Growth Inhibition ◽  
Guaiacol Peroxidase ◽  
Barley Cultivars ◽  
Peroxidase Isozymes ◽  
Sds Page ◽  
Al Treatment ◽  
Treatment Activity

The effect of Al stress on peroxidase activity and peroxidase isozymes was studied in roots of two barley cultivars with contrasting sensitivity to Al. Al treatment induced a tremendous enhancement of guaiacol peroxidase activity especially in roots of Al-sensitive barley cv. Alfor. After 48 h of Al treatment activity of peroxidase in roots of cv. Alfor was up to 5.5 times higher than the control roots. In contrast, activity of peroxidase in the roots of Al-resistant cv. Bavaria was about one half than that in roots of Al-sensitive Alfor. SDS-PAGE analysis revealed that at least five peroxidase isozymes are activated by Al treatment. Using IEF we determined that three of Al-induced peroxidase isozymes are cationic with pI about 8.2, 8.4 and 8.6, while two other are anionic isoperoxidases with pI about 4.0 and 4.5. Al induced increase in the activity of root peroxidases correlated with the extent of Al induced root growth inhibition. The inhibition of root growth in Al-sensitive Alfor represented 44% but in Al-resistant Bavaria only 21% in comparison with control plants. Higher peroxidase activity, as well, as higher inhibition of root growth in Al-sensitive Alfor suggest that enhanced oxidative stress generated by Al treatment is significantly more stressful in Alfor than in the Al-resistant Bavaria.

scholarly journals Comparison of Protein Profile and Peroxidases in Bush and Vine-type Tropical Pumpkin

2008 ◽  
Vol 133 (3) ◽  
pp. 315-319 ◽  
Author(s):  
Tao Wu ◽  
Jiashu Cao
Keyword(s):  
Peroxidase Activity ◽  
Single Gene ◽  
Protein Profile ◽  
Cucurbita Moschata ◽  
Protein Profiles ◽  
Relative Expression ◽  
Peroxidase Isozymes ◽  
Total Peroxidase Activity ◽  
Leaf Tissues ◽  
Root Tissues

Comparisons of total peroxidase activity and peroxidase isozymes as well as protein profiles among segregating, near-isogenic bush and vine phenotypes of pumpkin (Cucurbita moschata Duchesne) were investigated. Peroxidase activities of internode and leaf tissues of the bush plants were higher than those of respective vine tissues. Roots of bush plants, however, had a lower peroxidase activity than vine plants. In both bush and vine plants, peroxidase activities were lower in leaf tissues than in root and internode tissues. Electrophoretic comparisons revealed qualitative differences in peroxidase patterns in internodes between bush and vine plants. Moreover, qualitative differences between internode and root profiles were found between bush and vine plants in C. moschata. In conclusion, the results of this report revealed that a single gene conferring the bush phenotype in C. moschata might affect the relative expression of peroxidase activity, peroxidase isozymes, and protein profiles in leaf, internode, and root tissues.

scholarly journals Influence of Pollination on Peroxidase Activities and Isozymes during Southern Highbush Fruit Development

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 808F-808
Author(s):  
Yuehe Huang ◽  
Gregory A. Lang
Keyword(s):  
Peroxidase Activity ◽  
Fruit Development ◽  
Vaccinium Corymbosum ◽  
Banding Patterns ◽  
Color Transition ◽  
Peroxidase Isozymes ◽  
Soluble Peroxidase ◽  
Southern Highbush ◽  
Dark Blue ◽  
Very High

Five-year-old `Sharpblue' southern highbush (Vaccinium corymbosum) plants were self- and cross-pollinated (`O'Neal') to study peroxidase activities and isozyme patterns during fruit development. Both soluble and bound peroxidase activities were present throughout development. Activities were very high during early fruit development, with peaks at 10 and 20 days after self- and cross-pollination, respectively. Activity was much higher for cross-pollinations. During rapid fruit development, peroxidase activities were low. During ripening, the activity of soluble peroxidases increased, then declined in both treatments. Bound peroxidase activity increased during the color transition from blue to dark blue, with the increase being much greater in self-pollinated fruits. Banding patterns of both soluble and bound isoperoxidases varied by pollination treatment as well as fruit developmental stage. Pollen sources alter peroxidase isozymes and activities in developing fruits. During fruit ripening, soluble peroxidase activity appears to be associate with the color transition from light blue to blue, while bound peroxidase activity appears to be associated with the color transition from blue to dark blue.

HarpinPSS-induced peroxidase and lignin accumulation in tobacco during the hypersensitive response

1999 ◽  
Vol 26 (3) ◽  
pp. 265 ◽  
Author(s):  
Wei-Chang Wang ◽  
Zin-Huang Liu
Keyword(s):  
Salicylic Acid ◽  
Nicotiana Tabacum ◽  
Pseudomonas Syringae ◽  
Hypersensitive Response ◽  
Peroxidase Activity ◽  
Lignin Content ◽  
Anionic Peroxidase ◽  
Peroxidase Isozymes ◽  
Nicotiana Tabacum L ◽  
Encoding Gene

Harpinpss, a pathogenic protein encoded by hrpZ in the hrp gene cluster of Pseudomonas syringae pv. syringae, induces the hypersensitive response (HR) in tobacco (Nicotiana tabacum L. cv. Xanthi). An increase in peroxidase activity, lignin content and salicylic acid was observed during the HR elicited by harpin. The increase in anionic, moderately anionic and cationic peroxidase isozymes is positively correlated with the HR in tobacco. In addition, the increase of the anionic peroxidase isozyme (pI 3.5) is correlated with a rise of the transcript of the encoding gene.

Changes in peroxidase activity and in peroxidase isozymes in carrot callus

1993 ◽  
Vol 88 (1) ◽  
pp. 167-171 ◽  
Author(s):  
Kunimitsu Wakamatsu ◽  
Umeo Takahama
Keyword(s):  
Peroxidase Activity ◽  
Peroxidase Isozymes
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