THE EFFECT OF SALICYLIC ACID ON PHOTOSYNTHETIC PIGMENTS, CONTENTS OF SUGAR AND ANTIOXIDANT ENZYMES UNDER LEAD STRESS IN BRASSICA NAPUS L.

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RANJBAR MONIREH; LARI YAZDI HOSSEIN; BOROUMAND JAZI SHEIDA

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Journal: Journal of Plant Biological Sciences Year:2011 | Volume:3 | Issue:9 Page(s): 39-52

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Information Journal Paper

Title

THE EFFECT OF SALICYLIC ACID ON PHOTOSYNTHETIC PIGMENTS, CONTENTS OF SUGAR AND ANTIOXIDANT ENZYMES UNDER LEAD STRESS IN BRASSICA NAPUS L.

Author(s)

RANJBAR MONIREH | LARI YAZDI HOSSEIN | BOROUMAND JAZI SHEIDA | Issue Writer Certificate

Keywords

PEROXIDASEQ2

SALICYLIC ACIDQ2

LEADQ2

SOLUBLE SUGARQ2

INSOLUBLE SUGARQ2

CATALASEQ1

CHLOROPHYLLQ2

BRASSICA NAPUS L.Q2

Abstract

This research was done to study the effects of LEAD and SALICYLIC ACID on content of photosynthetic pigments (chlorophylls a, b and a+b), and changes of soluble and INSOLUBLE SUGARs (starch) in roots and shoots of BRASSICA NAPUS L.. One-week old seedlings of BRASSICA NAPUS L. were grown in nutrient solution consisting Pb (NO3)2 (0.25, 0.5, 0.75, 1, 1.5 and 2 mmol) and SALICYLIC ACID (5 and 10 mmol) for 20 days. The fulfillments were in triplicate and data were statistically analyzed by using full randomize plots, SPSS and Duncan test. Based on the results by increasing the concentrations of Pb (NO3)2 in hydroponic cultures; the plants could not tolerate high concentrations of LEAD (1.5 and 2 mmol). Other LEAD treated plants showed significant decrease in the amount of CHLOROPHYLL a, b and a+b and content of soluble and INSOLUBLE SUGARs in roots and shoot compared to control plants, in the meantime, the activities of CATALASE and PEROXIDASE enzymes were significantly increased. Decreasing of the amount of CHLOROPHYLL a was higher than CHLOROPHYLL b in all treatments. There were considerable increases in CHLOROPHYLL a, soluble and INSOLUBLE SUGARs in both roots and shoot under LEAD and SALICYLIC ACID treatments. But application of SALICYLIC ACID did not show significant effect on the amount of CHLOROPHYLL b and a+b, whereas using of SALICYLIC ACID under LEAD treatments decreased activities of CATALASE and PEROXIDASE enzymes, but SALICYLIC ACID did not have significant effect on average of CATALASE activities in root. On the other hand, an increase of soluble and INSOLUBLE SUGARs and oxidative enzymes could show the role of SALICYLIC ACID in increasing tolerance of plants under LEAD stress. Therefore, SALICYLIC ACID had a role in mitigation of damaged caused by oxidative stress.

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APA: Copy

RANJBAR, MONIREH, LARI YAZDI, HOSSEIN, & BOROUMAND JAZI, SHEIDA. (2011). THE EFFECT OF SALICYLIC ACID ON PHOTOSYNTHETIC PIGMENTS, CONTENTS OF SUGAR AND ANTIOXIDANT ENZYMES UNDER LEAD STRESS IN BRASSICA NAPUS L.. IRANIAN JOURNAL OF PLANT BIOLOGY, 3(9), 39-52. SID. https://sid.ir/paper/160032/en

Vancouver: Copy

RANJBAR MONIREH, LARI YAZDI HOSSEIN, BOROUMAND JAZI SHEIDA. THE EFFECT OF SALICYLIC ACID ON PHOTOSYNTHETIC PIGMENTS, CONTENTS OF SUGAR AND ANTIOXIDANT ENZYMES UNDER LEAD STRESS IN BRASSICA NAPUS L.. IRANIAN JOURNAL OF PLANT BIOLOGY[Internet]. 2011;3(9):39-52. Available from: https://sid.ir/paper/160032/en

IEEE: Copy

MONIREH RANJBAR, HOSSEIN LARI YAZDI, and SHEIDA BOROUMAND JAZI, “THE EFFECT OF SALICYLIC ACID ON PHOTOSYNTHETIC PIGMENTS, CONTENTS OF SUGAR AND ANTIOXIDANT ENZYMES UNDER LEAD STRESS IN BRASSICA NAPUS L.,” IRANIAN JOURNAL OF PLANT BIOLOGY, vol. 3, no. 9, pp. 39–52, 2011, [Online]. Available: https://sid.ir/paper/160032/en

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