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258783

GROWTH, NUTRIENT STATUS AND SOME OXIDASES ENZYME ACTIVITY OF CUCUMBER PLANTS AS AFFECTED BY SODIUM CHLORIDE SALINTY

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Last updated: 04 Jan 2025

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Abstract

Growth and nutritional status as well as ascorbic acid oxidase and peroxidase activities in cucumber (Cucumus sativus L. var. Salprita) plants grown under NaCl salinity were studied. The growth was decreased with increase of NaCl level. Highly significant negative correlations were found between salinity level and the uptake of all determined elements except that of manganese (Mn) in the shoots. Under salinity stress conditions, potassium (K) and calcium (Ca) were found to migrate from roots to shoots, while iron (Fe) tends to accumulate in the roots and uptake of zinc (Zn) and copper (Cu) was impaired. Potassium and phosphorus (P) concentrations were dramatically decreased as the level of NaCl was increased, meanwhile magnesium (Mg) showed a slight decrease and Ca concentration even increased in the shoots. Micronutrient concentrations showed different trends as the salt concentration increased. Iron (Fe) was severely decreased in the shoots, zinc (Zn) was decreased in the roots, Copper (Cu) was decreased in both shoots and roots while manganese (Mn) was increased in the shoots. Nutrient concentration ratios were disturbed. P/K ratio was deviated negatively in the shoots and positively in the roots of salt treated plants as compared to control. However, K/Mg was deviated positively in the shoot and negatively in the root. K/Zn was negatively deviated in the root at high salt level and positively in the shoot under the low level. Fe/Zn was negatively deviated from control plants in the shoots and roots under low salt level and positively in the roots of the plants grown under the high level. Ascorbic acid oxidase and peroxidase activities in cucumber leaves were severely inhibited as the salt level increased in the root medium. Thus, activities of these enzymes can be used as indicators for salt stress conditions.          

DOI

10.21608/jpp.2000.258783

Authors

First Name

Zeinab

Last Name

Salama,

MiddleName

A.

Affiliation

Botany Department, National Research Centre, Dokki, Cairo, Egypt

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Orcid

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First Name

M.

Last Name

Shaaban

MiddleName

M.

Affiliation

Botany Department, National Research Centre, Dokki, Cairo, Egypt

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Orcid

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Volume

25

Article Issue

4

Related Issue

36601

Issue Date

2000-04-01

Receive Date

2000-03-10

Publish Date

2000-04-01

Page Start

2,065

Page End

2,074

Print ISSN

2090-3669

Online ISSN

2090-374X

Link

https://jpp.journals.ekb.eg/article_258783.html

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https://jpp.journals.ekb.eg/service?article_code=258783

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10

Type

Original Article

Type Code

887

Publication Type

Journal

Publication Title

Journal of Plant Production

Publication Link

https://jpp.journals.ekb.eg/

MainTitle

GROWTH, NUTRIENT STATUS AND SOME OXIDASES ENZYME ACTIVITY OF CUCUMBER PLANTS AS AFFECTED BY SODIUM CHLORIDE SALINTY

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Article

Created At

22 Jan 2023