Plant Process and Function
فرآیند و کارکرد گیاهی
Journal of Plant Process and Function
Agriculture
http://jispp.iut.ac.ir
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admin
2322-2727
2383-3688
10.22034
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jalali
1398
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gregorian
2019
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fulltext
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Salicylic Acid Mitigates the Effects of Drought and Salinity on Nutrient and Dry Matter Accumulation of Linseed
تنش خشكي
Droughts Stress
پژوهشي
Research
<p style="margin: 0cm 0cm 0pt; text-align: justify; line-height: 150%; unicode-bidi: embed; direction: ltr;"><b><span new="" style="line-height: 150%; font-family:;" times=""><font color="#000000">Salicylic acid can mitigate the impacts of salinity and drought stresses in crops. To study the effect of </font><span style="color: red;">salicylic</span><font color="#000000"> acid under </font><span style="color: red;">iso</span><font color="#000000">-osmotic drought and salt stresses on nutrients absorption and growth of linseed (</font><i><font color="#000000">Linum usitatissimum</font></i><font color="#000000"> L.), an experiment was conducted based on a completely randomized design with three replications in Yasouj University in 2016. </font><span><font color="#000000">Treatments included</font></span><font color="#000000"> </font><span><font color="#000000">salinity</font></span><font color="#000000"> </font><span><font color="#000000">and</font></span><font color="#000000"> </font><span><font color="#000000">drought</font></span><font color="#000000"> </font><span><font color="#000000">with</font></span><font color="#000000"> </font><span><font color="#000000">similar</font></span><font color="#000000"> </font><span><font color="#000000">osmotic potentials</font></span><font color="#000000"> </font><font color="#000000">(-</font><span><font color="#000000">2</font></span><font color="#000000">, -</font><font color="#000000">4</font><font color="#000000">, -7 </font><span><font color="#000000">and </font></span><font color="#000000">-</font><span><font color="#000000">9</font></span><font color="#000000"> </font><span><font color="#000000">bar)</font></span><font color="#000000"> </font><span><font color="#000000">in</font></span><font color="#000000"> </font><span><font color="#000000">8 levels</font></span><font color="#000000"> </font><span><font color="#000000">and control that</font></span><font color="#000000"> </font><span><font color="#000000">applied</font></span><font color="#000000"> </font><span><font color="#000000">in Hoagland solution</font></span><font color="#000000">. The second factor was </font><span style="color: red;">salicylic</span><font color="#000000"> acid </font><span><font color="#000000">(0 and 0.5 mM). Salinity and</font></span><font color="#000000"> </font><span><font color="#000000">drought</font></span><font color="#000000"> applied </font><span><font color="#000000">using</font></span><font color="#000000"> </font><span><font color="#000000">sodium chloride and</font></span><font color="#000000"> </font><span><font color="#000000">polyethylene glycol</font></span><font color="#000000"> </font><span><font color="#000000">6000, respectively</font></span><font color="#000000">. The results showed that root and shoot dry weight and Fe, Zn, Mn and Ca content decreased by increasing salinity and drought compared to control, however </font><span style="color: red;">salicylic</span><font color="#000000"> acid application significantly increased </font><span style="color: red;">these traits</span><font color="#000000">, especially under salinity conditions.</font></span></b><font color="#000000" face="Calibri" size="3"> </font><b><span new="" style="color: red; line-height: 150%; font-family:;" times="">Na content of </span></b><b><span new="" style="line-height: 150%; font-family:;" times=""><font color="#000000">Shoot significantly raised by increasing salinity compared to control and </font><span style="color: red;">salicylic</span><font color="#000000"> acid decreased it. Drought, and also </font><span style="color: red;">salicylic</span><font color="#000000"> acid, had no significant effect on shoot and root Na. Shoot and root dry weights were more significantly affected by drought than salinity in mild stress levels, but the effect of </font><span style="color: red;">drought and salinity </span><font color="#000000">were the same at high levels. Generally i</font></span></b><b><span new="" style="line-height: 150%; font-family:;" times=""><font color="#000000">t found that the negative effects of drought were more destructive than salinity at lower osmotic potentials but at higher osmotic potentials impact of drought and salinity was the same indicating the ionic toxicity of salinity at high Na stress. </font></span></b><b><span new="" style="line-height: 150%; font-family:;" times=""><font color="#000000">Salicylic acid significantly </font><span style="color: red;">mitigated </span><font color="#000000">the negative </font><span style="color: red;">impacts</span><font color="#000000"> of osmotic stress especially under salinity conditions.</font></span></b></p>
Calcium, Iso-osmotic, Potassium, Sodium, Zinc
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http://jispp.iut.ac.ir/browse.php?a_code=A-10-160-8&slc_lang=en&sid=1
Mohsen
Movahhedi-Dehnavi
Movahhedi1354@.yu.ac.ir