Dipartimento di Scienze Agrarie e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno 74, 06121 Perugia, Italy.
J Agric Food Chem. 2011 Nov 23;59(22):12109-15. doi: 10.1021/jf2026555. Epub 2011 Oct 24.
A study was carried out to compare the effects of treating wheat (Triticum aestivum) and Italian ryegrass (Lolium multiflorum) with atrazine and fluorodifen. The herbicides interfered with photosynthesis and dark respiration, depending on the species. Atrazine decreased photosynthesis in both species and dark respiration in wheat, while fluorodifen caused decrements of photosynthetic activity of wheat. Antioxidant enzymes, such as ascorbate peroxidase (APX), dehydroascorbate reductase (DHAR), and glutathione reductase (GR), were generally more active in untreated and treated wheat with respect to Italian ryegrass, which explains why oxidative damage, expressed as malondialdehyde (MDA) content, was only found in ryegrass. Investigations on the activity of herbicide-detoxifying enzyme, glutathione S-transferase (GST), and on the accumulation and persistence of the herbicides in the plants showed higher detoxification rates in wheat than in the grass.
进行了一项研究，比较了用莠去津和氟磺胺草醚处理小麦（Triticum aestivum）和多花黑麦草（Lolium multiflorum）的效果。这些除草剂会根据物种的不同而干扰光合作用和暗呼吸。莠去津降低了两种物种的光合作用和小麦的暗呼吸，而氟磺胺草醚则导致小麦光合作用活性下降。抗氧化酶，如抗坏血酸过氧化物酶（APX）、脱氢抗坏血酸还原酶（DHAR）和谷胱甘肽还原酶（GR），在未处理和用莠去津处理的小麦中通常比多花黑麦草更为活跃，这解释了为什么只有黑麦草中发现了氧化损伤，表现为丙二醛（MDA）含量增加。对除草剂解毒酶谷胱甘肽 S-转移酶（GST）的活性以及植物中除草剂的积累和持久性的研究表明，小麦的解毒速度高于草。
