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Turkish Journal of Agriculture and Forestry

Author ORCID Identifier

ARWA ABDULKREEM AL-HUQAIL 0000-0002-1226-499X

SULIMAN MOHAMMED SULIMAN ALGHANEM 0009-0001-9040-9277

HAIFA ABDULAZIZ SAKIT ALHAITHLOUL 0009-0006-5418-1224

NAYAB NAEEM 0009-0006-9938-9379

WAJIHA SARFRAZ 0000-0003-2605-7825

NOREEN KHALID 0000-0001-6503-4082

BABER ALI 0000-0003-1553-2248

DOI

10.55730/1300-011X.3190

Abstract

The current investigation demonstrates that the application of MEL (0, 1 and 2 µmol L−1) mitigates the effects of Cr stress 0 (no Cr), 50 and 100 mg kg−1 on coriander (Coriandrum sativum L.) plants. Results from the present study showed that the increasing levels of Cr concentration in the soil induced a significant decrease in shoot length, root length, shoot fresh weight, root fresh weight, shoot dry weight, root dry weight, chlorophyll-a, chlorophyll-b, total chlorophyll, carotenoid contents, net photosynthesis, transpiration rate and stomatal conductance by 36%, 24%, 17%, 64%, 27%, 23%, 19%, 29%, 36%, 18%, 73%, 83% and 43% respectively. Results findings also showed that the increasing Cr stress in the soil significantly (P < 0.05) decreases calcium, magnesium, iron and phosphorus contents by 69%, 51%, 89% and 109% respectively in the roots and decreased by 164%, 97%, 66% and 124% respectively in the shoots. However, Cr toxicity boosted the production of reactive oxygen species (ROS) by increasing the contents of oxidative stress indicators. Although activities of various antioxidative enzymes and their specific gene expression and also the non-enzymatic antioxidants initially increased up to a Cr level of 50 µM but decreased gradually with the further increased in the Cr level of 100 µM in the medium, compared to those plants which were grown in the control treatment. Results also revealed that the soluble sugar, reducing sugar, and non-reducing sugar were decreased in plants grown under elevating Cr levels but increased the Cr accumulation in the roots and shoots of C. sativum. Although results also illustrated that the application of MEL also decreased Cr toxicity in C. sativum by increasing antioxidant capacity and their gene expression and thus improved the plant growth, photosynthetic pigments, and decrease oxidative stress in the roots and shoots of C. sativum.

Keywords

Gene expression, Herb, heavy metal toxicity, melatonin, organic acid, oxidative stress

First Page

402

Last Page

416

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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