菲对小麦、河河花和紫花苜蓿的生理效应

Q3 Agricultural and Biological Sciences
S. Salehi-Lisar, Somayeh Deljoo
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引用次数: 7

摘要

背景:多环芳烃(PAHs)是一种广泛存在的有机污染物,通过自然和人为过程释放到环境中。多环芳烃可以对植物生长发育的各个方面产生负面影响。然而,多环芳烃的作用机制和植物对多环芳烃的生理反应尚未得到充分的研究。因此,本研究的目的是评价小麦、向日葵和苜蓿对菲毒性的萌发、生长和生理反应。材料与方法:本试验采用盆栽盆栽,采用完全随机设计(CRD),共4个重复。在温室条件下,在含有50和100 mg kg1菲的土壤中栽培植株14天。测定生长参数后,采用分光光度法进行生化分析。结果:土壤中菲污染对植物种子萌发和幼苗生长有不同程度的影响。苜蓿在种子萌发期和幼苗生长期均表现出最高的抗性。小麦和向日葵分别是种子萌发期和幼苗生长期最敏感的品种。菲污染引起植物氧化应激,POD是参与活性氧解毒的重要酶。结论:菲对植物种子萌发、幼苗生长和生理参数的影响具有物种依赖性。氧化应激的诱导和光合色素含量的降低是菲菲污染土壤中植物生长缓慢的两个原因,而POD是脱毒活性氧的重要酶。至少在某些物种中,种子萌发时的高抗性可能伴随着幼苗对多环芳烃的高抗性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Physiological effect of phenanthrene on Triticum aestivum, He Ha nth us annus and Medicago sativa
Background: Polycyclic aromatic hydrocarbons (PAHs) are widespread organic pollutants released into the environment by both natural and anthropogenic processes. PAHs can negatively affect different aspects of plant growth and development. However, the mechanisms of PAHs effects and physiological response of plants to PAHs have not been adequately studied. Accordingly, the aim of this study was evaluation of the germination, growth and physiological responses of wheat, sunflower and alfalfa to phenanthrene toxicity. Material and Methods: This experiment was conducted as a pot culture of plants using a completely randomised design (CRD) with four replications. Plants were cultivated in soil containing 50 and 100 mg kg1 of phenanthrene for 14 days under greenhouse conditions. All biochemical assays were performed spectrophotometrically after the determination of growth parameters. Results: Soil contamination with phenanthrene differently decreased seed germination and the subsequent seedling growth of plants. Alfalfa showed the highest resistance at both the seed germination and seedling growth phases. Wheat and sunflower were the most sensitive species at the seed germination stage and seedling growth phase, respectively. Phenanthrene contamination induced oxidative stress in plants and POD was determined to be the important enzyme involved in ROS detoxification. Conclusions: Phenanthrene effects on seed germination, seedling growth and physiological parameters of plants are species-dependent. The induction of oxidative stress and decrease in photosynthetic pigments content are two of the reasons for lower plant growth in phenanthrenecontaminated soil, and POD was an important enzyme in the detoxification of ROS. At least in some species, the higher resistance at seed germination could be followed by the higher resistance of seedlings to PAHs.
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来源期刊
Eurasian Journal of Biosciences
Eurasian Journal of Biosciences Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)
CiteScore
1.20
自引率
0.00%
发文量
0
期刊介绍: EurAsian Journal of BioSciences (Abbrev. Eurasia J Biosci or EJOBIOS) is an international, refereed electronic journal. It publishes the results of original research in the field of biological sciences restricted tomorphology, physiology, genetics, taxonomy, ecology and biogeography of both prokaryotic and eucaryotic organisms. The journal encourages submission of manuscripts dealing with plant biology, animal biology, plant physiology, microbiology, hydrobiology, ecology and environmental science, ethnobiology, biodiversity and conservation biology. EurAsian Journal of BioSciences publishes original articles in the following areas: -Agriculture, Fisheries & Food -Anatomy & Morphology -Behavioural Sciences -Biology, Biochemistry and Biotechnology -Biophysics -Biology Education -Cellular Biology and Anatomical Sciences -Ecology, Evolution & Environment -Entomology -Forestry -General Biology -Genetics & Heredity -Life Sciences - Other topics -Microbiology and Immunology -Molecular Biology -Mycology -Palaeontology -Parasitology -Pharmacology & Pharmacy -Physiology and Related Sciences -Plant Sciences -Toxicology -Veterinary Sciences -Virology -Zoology
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