Plant Process and Function
فرآیند و کارکرد گیاهی
Journal of Plant Process and Function
Agriculture
http://jispp.iut.ac.ir
1
admin
2322-2727
2383-3688
10.22034
fa
jalali
1399
5
1
gregorian
2020
8
1
9
37
online
1
fulltext
en
Effect of exogenous melatonin on growth, electrolyte leakage and antioxidant enzyme activity in rosemary under salinity stress
تنش شوري
Salt Stress
پژوهشي
Research
<br>
<strong>Melatonin is</strong><strong> a new plant hormone </strong><strong>that plays an important role in stress tolerance. For investigation the effect of </strong><strong>exogenous</strong><strong> application of melatonin on salt tolerance in </strong><strong>rosemary (<em>Rosmarinus officinalis</em> L.)</strong><strong>, a factorial experiment was conducted in a completely randomized design </strong><strong>with three replications</strong><strong>. The first factor was melatonin (50, 100 µM) and the second factor was salinity stress (6, 9, 12 ds m<sup>-1</sup>).</strong> <strong>Water was used for control</strong> <strong>treatment. In the treated plants with concentrations of 6, 9 and 12 dsm<sup>-1</sup> NaCl, stem height decreased compared to the control. </strong><strong>Melatonin </strong><strong>treatment (100 μM) reduced the effects of NaCl stress. 100 μM melatonin increased leaf growth compared to the control. The highest activity of SOD and POD was recorded in pretreatment plants with 50 and 100 μM melatonin. Melatonin prevented the reduction of chlorophyll content due to salt stress. The</strong> <strong>lowest ion leakage was related to 100 μM melatonin in control, 6 and 9 dsm<sup>-1</sup> NaCl. Also, the highest reduction of electrolyte leakage (with 28.5% reduction) was related to 100 μM MT at 12 dsm<sup>-1</sup>NaCl</strong><strong>. According to the results, 100 μM melatonin was more effective in reducing the effects of salinity stress.</strong> <div></div> <div></div>
Antioxidants, Electrolyte leakage. Oxidative damage, plant development, Salt tolerance
59
66
http://jispp.iut.ac.ir/browse.php?a_code=A-10-324-6&slc_lang=en&sid=1
mahnaz
karimi
karimi.sanru@gmail.com
100319475328460020798
100319475328460020798
Yes
Assistant professor, Department of Horticultural Sciences, Faculty of crop Sciences, Sari Agricultural Sciences and Natural Resources University, Sari
دانشگاه صنعتی اصفهان
masomeh
mohamadi
lilium.tanha@yahoo.com
100319475328460020799
100319475328460020799
No
MSc student, Department of Horticultural Sciences, Faculty of crop Sciences, Sari Agricultural Sciences and Natural Resources University