The physiological and biochemical effects of salicylic acid on sunflowers (Helianthus annuus) exposed to flurochloridone
The physiological and biochemical effects of salicylic acid on sunflowers (Helianthus annuus) exposed to flurochloridone
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DOI：
10.1016/j.ecoenv.2014.04.041
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发表时间：
2014-08-01
影响因子：
6.8
通讯作者：
Yigit, Emel
中科院分区：
文献类型：
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作者：
Kaya, Armagan;Yigit, Emel
本研究比较了氟咯草酮、氟咯草酮和外源水杨酸对向日葵的影响。了解水杨酸对除草剂毒性的降低作用。我们研究和比较了不同浓度的氟咯草酮（11，32和72 mM）在SA预处理和未处理的植物的生理和生化效应。与对照组相比，用氟咯草酮处理的植物表现出减少的总叶绿素、类胡萝卜素和相对含水量，而用SA预处理的植物对于相同的生理参数表现出相对较高的值。在SA非处理的植物，超氧化物歧化酶，谷胱甘肽还原酶和谷胱甘肽S-转移酶的活性增加，在处理组相比，对照组。在处理组中，这些酶的活性降低SA预处理的植物相比，未处理的植物。抗坏血酸过氧化物酶和过氧化氢酶的活性降低氟氯酮处理的植物相比，对照植物。抗坏血酸过氧化物酶的活性增加，在对照组，但在SA预处理的植物相比，未处理的植物在处理组下降。然而，SA处理降低了过氧化氢酶的活性，在对照组和治疗组相比，没有用SA处理的植物。与对照组相比，氟咯草酮处理增加了处理组中的丙二醛含量，而与未用SA处理的植物相比，SA预处理降低了丙二醛含量。与对照相比，氟咯草酮处理增加了内源SA含量。虽然除草剂在植物中的残留水平随着除草剂浓度的增加而成比例地增加，但与未用SA处理的植物相比，SA预处理的植物表现出降低的残留除草剂水平。这些结果表明，氟咯草酮诱导各种生理和生化反应，在非目标植物和外源SA处理可以通过改变这些反应，提高抗逆性。(C)2014爱思唯尔公司All rights reserved.
In this study, we comparatively evaluated the effects of the flurochloridone as well as flurochloridone and exogenously applied salicylic acid (SA) on Helianthus annuus L. to find out herbicide-induced toxicity reducing influence of SA. We examined and compared the physiological and biochemical effects of different concentrations of flurochloridone (11, 32 and 72 mM) in both the SA pre-treated and non-treated plants. The plants treated with flurochloridone exhibited reduced total chlorophyll, carotenoid, and relative water content compared to the control group, whereas the plants that were pre-treated with SA exhibited relatively higher values for the same physiological parameters. In the SA non-treated plants, the superoxide dismutase, glutathione reductase and glutathione S-transferase activities were increased in the treatment groups compared to the control group. In the treatment groups, these enzyme activities were decreased in the SA-pre-treated plants compared to the non-treated plants. Ascorbate peroxidase and catalase activities decreased in the flurochloridone-treated plants compared to the control plants. The ascorbate peroxidase activity increased in the control groups but decreased in the treatment groups in the SA pre-treated plants compared to the non-treated plants. However, SA treatment decreased the activity of catalase in the control and treatment groups compared to the plants that were not treated with SA. Flurochloridone treatment increased the malondialdehyde content in the treated groups compared to the control groups, whereas SA-pretreatment decreased malondialdehyde content compared to plants that were not treated with SA. Flurochloridone treatment increased endogenous SA content compared to the control. Although the residual levels of herbicide in the plants increased proportionately with increasing herbicide concentrations, the SA-pre-treated plants exhibited reduced residual herbicide levels compared to the plants that were not treated with SA. These results indicate that the flurochloridone induces various physiological and biochemical responses in non-target plants and that treatment with exogenous SA can increase stress resistance by altering these responses. (C) 2014 Elsevier Inc. All rights reserved.