Effects of NaCl on some physiological and biochemical responses in two cultivars of L. usitatissimum

  • سال انتشار: 1397
  • محل انتشار: مجله فرآیند و کارکرد گیاهی، دوره: 7، شماره: 28
  • کد COI اختصاصی: JR_JISPP-7-28_004
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 181
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نویسندگان

Leila Amraee

Department of Biology, Faculty of Sciences, Urmia University, Urmia, Iran Department of Biology, Faculty of Sciences, Urmia University, Urmia, Iran

Rahmani

Institute of Biotechnology, Urmia University, Urmia, Iran

Babak Abdollahi

Department of Plant Breeding and Biotechnology, Faculty of Agriculture, Urmia University, Urmia, Iran

چکیده

Linum usitatissimum L. is one of the economically important oilseed crops and salt stress is one of the major environmental challenges affecting several physiological processes in plants. The present investigation was carried out to study the effects of NaCl on some physiological and biochemical responses in two cultivars of L. usitatissimum. Twenty-one-day-old-plants were exposed to salt stress (۰ and ۱۵۰ mM) for ۲۱ days. Results showed that salinity increased proline, phenol and flavonoid contents and total antioxidant capacity (based on ۲,۲-diphenyl-۱-picrylhydrazyl (DPPH) and Ferric reducing antioxidant power (FRAP) assays) in flax cultivars. Levels of oxidative stress parameters, such as Malondialdehyde (MDA) and other aldehydes, content of Na+ and Cl- and peroxidase (POD) enzyme activity were increased in NaCl-treated plants. The content of soluble protein was elevated and decreased in TN-۹۷-۲۸ and TN-۹۷-۱۰۶ cultivars, respectively. On the other hand, other antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APOX) were decreased and increased in TN-۹۷-۲۸ and TN-۹۷-۱۰۶ cultivars, respectively. It might be concluded that various cultivars have different mechanisms to diminish negative impacts of salinity stress.

کلیدواژه ها

Antioxidant enzymes, Flax, Proline, Protein, Lipid, NaCl

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