• Keine Ergebnisse gefunden

Effect of Combined Stress on the O2

N/A
N/A
Info
Herunterladen
Protected

Academic year: 2022

Aktie "Effect of Combined Stress on the O2"

Copied!
1
0
0

Wird geladen.... (Jetzt Volltext ansehen)

Jetzt herunterladen ( 1 Seite )

Volltext

(1)

Effect of Combined Stress on the O

2

Scavenging Enzyme Activities in Bean and Poplar Leaves

Julia Jakab

a

, Istva´n Kira´ly

a,

*, Emil Pa´ldi

b

and Ferenc La´ng

a

a Department of Plant Physiology, Eötvös Lora´nd University, H-1445 Budapest, POB 330, Hungary. Fax: 36Ð1-2660240. E-mail: ikiraly@ ludens.elte.hu

b Agricultural ResearchInstitute of the Hungarian Academy of Sciences, H-2462 Martonva´sa´r, Hungary

* Author for correspondence and reprint requests

Z. Naturforsch.54c,711Ð717 (1999); received November 28, 1998/March11, 1999

Wounding, Drought, Elicitation, Catalase, Peroxidase The activity of O2-scavenging en- zymes in bean leaves in different positions and poplar leaves in different leaf storeys was investigated. The effects of wounding, elicitation and drought and the combination of these treatments at various levels were studied.

Distal bean leaves showed higher responsiveness than those opposite the treated leaves.

Poplar leaves above the treated ones proved to be more active than those in lower storeys.

A comparison of the interaction of different stress treatments revealed both synergistic and antagonistic effects on the oxidant-generating rate and anti-oxidant synthesis of damaged and non-damaged plant tissues.

Referenzen

Jetzt herunterladen ( PDF - 1 Seite - 17.80 KB )

ÄHNLICHE DOKUMENTE

The leaf oils were obtained by steam distillation of the fresh leaves

This work has been digitalized and published in 2013 by Verlag Zeitschrift für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under

Concentration and speciation of arsenic in an insect feeding on the leaves of Pteris vittata

vittata with higher As concentrations, the pinna with insect bites showed a signi fi cantly lower As concentration than that without insect bites (Table 2).. This result implied that

Polyphenols of Rosa L. Leaves Extracts and their Radical Scavenging Activity

Remarkable high antioxidant activityand high total phenolic content (5.7% ⬍ GAE ⬍ 15.2%), large ellagic acid (EA) content from 9.37 to 19.42 mg/g of dryweight, a quercetin

Polyphenols of Rosa L. Leaves Extracts and their Radical Scavenging Activity

Remarkable high antioxidant activity and high total phenolic content (5.7% ⬍ GAE ⬍ 15.2%), large ellagic acid (EA) content from 9.37 to 19.42 mg/g of dry weight, a quercetin

Theoretical Study of the Effect of Different α-Substituents on the Acetaldimine-Vinylamine Tautomeric System

The imine structure was found to be energetically favorable, as indicated by the calculated heats of formation, Gibbs free energy, LUMO and HOMO, and charges. The proton transfer

Influence of Different Light Intensities on the Content of Diosgenin, Lipids, Carotenoids and Fatty Acids in Leaves of Dioscorea zingiberensis

Cultivation of the green phenotype (DzW) at the three light intensities of 10, 100 and 270 µ E · m Ð2 · sec Ð1 leads to changes of the diosgenin content in rhizomes, to an increase

Effect of Dehydration on the Photosynthetic Apparatus of Sun and Shade Leaves of Laurel Forest Trees

In this work we study the effect of reduction in relative water content (RWC) on the chlorophyll fluorescence induction kinetics as well as on the membrane integrity, measured

Fluorescence Imaging of Water and Temperature Stress in Plant Leaves*

In contrast, a short-term heat plus water stress in green tobacco plants was very fast detected via fluorescence imaging as a significant increase of red and far-red