硼对玉米（Zea mays L.）根系生长及抗氧化系统参数的毒性效应。
Toxic effects of boron on growth and antioxidant system parameters of maize (Zea mays L.) roots.
作者信息
Esim Nevzat, Tiryaki Deniz, Karadagoglu Omer, Atici Okkes
机构信息
1Department of Biology, Bingol University, Bingol, Turkey.
出版信息
Toxicol Ind Health. 2013 Oct;29(9):800-5. doi: 10.1177/0748233712442729. Epub 2012 Apr 4.
The aim of this study was to investigate the possible oxidative stress and the antioxidant response, which were caused on maize by boron (B). For this, 11- and 15-day-old maize seedlings were subjected to 2 or 4 mM B in the form of boric acid (H₃BO₃) for 2 and/or 6 days. At the end of the treatment period, root length, hydrogen peroxide (H₂O₂) content, malondialdehyde (MDA) content and the antioxidant enzymes superoxide dismutase (SOD), peroxidase (POX) and catalase (CAT) were measured. The results revealed that root length of plants, activity of antioxidative enzymes such as SOD, POX and CAT and also H₂O₂ contents and MDA levels were seriously affected by excess B. These results suggested that the oxidative stress occurred due to the toxic effect of B.
本研究的目的是调查硼（B）对玉米造成的可能的氧化应激和抗氧化反应。为此，将11日龄和15日龄的玉米幼苗分别用2或4 mM硼酸（H₃BO₃）处理2天和/或6天。在处理期结束时，测量根长、过氧化氢（H₂O₂）含量、丙二醛（MDA）含量以及抗氧化酶超氧化物歧化酶（SOD）、过氧化物酶（POX）和过氧化氢酶（CAT）。结果表明，过量的硼严重影响了植物的根长、SOD、POX和CAT等抗氧化酶的活性，以及H₂O₂含量和MDA水平。这些结果表明，氧化应激是由硼的毒性作用引起的。
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