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Positive effects of Penconazole on growth of Brassica napus under drought stress

Archives of Agronomy and Soil Science, 10 November 2018, Vol.64(13), p.1791-1806 [Peer Reviewed Journal]

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  • Title:
    Positive effects of Penconazole on growth of Brassica napus under drought stress
  • Author: Rezayian, Maryam ; Niknam, Vahid ; Ebrahimzadeh, Hassan
  • Found In: Archives of Agronomy and Soil Science, 10 November 2018, Vol.64(13), p.1791-1806 [Peer Reviewed Journal]
  • Subjects: Article ; Drought Stress ; Brassica Napus ; Penconazole ; Tolerance ; Antioxidative Enzymes
  • Publication Details: Taylor & Francis
  • Language: English
  • Description: The aim of the present study was to compare the effects of drought on some physiological and biochemical parameters and to assess the inducing effects of Penconazole (PEN) on drought tolerance in two cultivars (RGS003 as a drought tolerant and Sarigol as a drought sensitive) of canola. Plants were treated with various PEG concentrations (0, 5, 10, and 15%) without or with PEN (15 mg l −1 ). Decrease in fresh weight (FW) and dry weight (DW) in Sarigol under drought was higher than that of RGS003. Surprisingly, PEN reversed prominently the negative effects of drought on FW and DW in RGS003. Concomitantly, PEN treatment decreased malondialdehyde content in RGS003 under drought. Moreover, higher content of proline in RGS003 under all drought levels could be considered as a factor for drought tolerance of this cultivar. Superoxide dismutase (SOD), catalase (CAT) and Polyphenol oxidase (PPO) activities were induced by PEN in both cultivars under drought. Inducing effects of PEN on phenylalanine ammonia lyase and thyrosine ammonia lyase activities decreased by increasing of drought levels in both cultivars. In summary, PEN alleviated the negative effects of drought in RGS003 cultivar by inducing activities of SOD, CAT and PPO and proline content comparing to Sarigol.
  • Identifier: ISSN: 0365-0340 ; E-ISSN: 1476-3567 ; DOI: 10.1080/03650340.2018.1458095
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