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Eggplant seedlings modify antioxidant system during acclimation to low temperature

机译:茄子幼苗在适应于低温期间修饰抗氧化系统

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The aim of the research was the determination of changes in the antioxidant system of eggplant seedlings during chilling acclimation. The sequential measurements of stress-depended parameters were performed after two, four, and six days of chilling at 6 degrees C, while 18 degrees C was the control temperature. 'Epic' F-1 showed the highest chilling sensitivity; indeed, H2O2, malondialdehyde (MDA) and antioxidant activity increased, indicating that effective mechanisms were not activated sufficiently to alleviate stress symptoms. 'WA 6020' F-1 was less chilling-sensitive. Its defense systems were sufficient to scavenge the excess of reactive oxygen species (ROS), but after a reduction of the antioxidant activity on the 4th day of chilling, H2O2, and MDA concentrations increased. For 'Lima', the level of H2O2 showed the highest value on the 6th day, while for MDA on the 4th day of chilling. The genotype-dependent reaction of eggplant to chilling resulted from different ROS scavenging mechanisms involved in alleviation of stress symptoms on physiological level.
机译:该研究的目的是在冷却适应期间测定茄子幼苗抗氧化体系的变化。在6摄氏度下冷却的两个,四个和六天后进行应力依赖参数的顺序测量,而18℃是控制温度。 'Epic'F-1显示出最高的冷却敏感性;实际上,H 2 O 2,丙二醛(MDA)和抗氧化活性增加,表明未充分激活有效机制以减轻应激症状。 'WA 6020'F-1更冷敏感。其防御系统足以清除过量的反应性氧物质(ROS),而是在冷却,H2O2和MDA浓度的第4天减少抗氧化活性之后增加。对于'Lima',H2O2的水平在第6天显示出最高值,而MDA在冷却的第4天。茄子对冷却的基因型依赖性反应由参与减轻生理水平的应激症状的不同ROS清除机制产生。

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