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Antioxidants (Basel). 2021 Jul 30;10(8). doi: 10.3390/antiox10081227.

Antioxidative and Metabolic Contribution to Salinity Stress Responses in Two Rapeseed Cultivars during the Early Seedling Stage.

Antioxidants (Basel, Switzerland)

Ali Mahmoud El-Badri, Maria Batool, Ibrahim A A Mohamed, Zongkai Wang, Ahmed Khatab, Ahmed Sherif, Hasan Ahmad, Mohammad Nauman Khan, Hamada Mohamed Hassan, Ibrahim M Elrewainy, Jie Kuai, Guangsheng Zhou, Bo Wang

Affiliations

  1. MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science & Technology, Huazhong Agricultural University, Wuhan 430070, China.
  2. Field Crops Research Institute, Agricultural Research Center (ARC), Giza 12619, Egypt.
  3. Botany Department, Faculty of Agriculture, Fayoum University, Fayoum 63514, Egypt.
  4. National Gene Bank, Agricultural Research Center (ARC), Giza 12619, Egypt.

PMID: 34439475 PMCID: PMC8389040 DOI: 10.3390/antiox10081227

Abstract

Measuring metabolite patterns and antioxidant ability is vital to understanding the physiological and molecular responses of plants under salinity. A morphological analysis of five rapeseed cultivars showed that Yangyou 9 and Zhongshuang 11 were the most salt-tolerant and -sensitive, respectively. In Yangyou 9, the reactive oxygen species (ROS) level and malondialdehyde (MDA) content were minimized by the activation of antioxidant enzymes such as superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX) for scavenging of over-accumulated ROS under salinity stress. Furthermore, Yangyou 9 showed a significantly higher positive correlation with photosynthetic pigments, osmolyte accumulation, and an adjusted Na

Keywords: Brassica napus; ROS; antioxidant enzymes; metabolites; osmolytes; salinity stress

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