A review of germination and early growth as a proxy for plant fitness under petrogenic contamination — knowledge gaps and recommendations

Kaur, Navjot; Erickson, Todd E.; Ball, Andrew S.; Ryan, Megan H.

doi:10.1016/j.scitotenv.2017.02.179

Cited by 50 publications

(29 citation statements)

References 187 publications

(243 reference statements)

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“…Seedling emergence of maize and other crops such as wheat (Triticum aestivum L.), rye grass (Lolium multiflorum L.), mungbean (Vigna radiata L.) and chickpea (Cicer arientum L.) are often found to be negatively affected by the presence of PHs in soil [54]. The remarkable reduction in seedling emergence of maize in the present study might be due to the susceptibility of the seeds to the volatile fraction of PHs and reduced imbibition of seeds due to hydrophobic conditions induced by PHs [55,56]. Notably, the phytotoxic effect of PHs on seedling emergence was greatly reduced in the presence of strain MN54 and biochar, suggesting the significant role of sp.…”

Section: Seedling Emergence and Growth Of Maize Plantsmentioning

confidence: 50%

Biochar and Bacillus sp. MN54 Assisted Phytoremediation of Diesel and Plant Growth Promotion of Maize in Hydrocarbons Contaminated Soil

et al. 2021

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Contamination by petroleum hydrocarbons (PHs) is a great threat to environment due to the higher persistence and bio-toxicity of PHs. Therefore, removal of PHs from contaminated environment and strategies to reduce their toxic effects on living organisms are crucial for environmental safety and human health. The toxic effects of PHs from the polluted soil can be reduced by the addition of microbes and biochar. In this study, a pot trial was carried out to evaluate the effects of sugarcane bagasse (SB) biochar and Bacillus sp. MN54 addition on phytoremediation of PHs and growth of maize (Zea mays L.) in soil artificially contaminated with diesel. Maize seeds were sown in uncontaminated or contaminated (with PHs) soil, treated with biochar and Bacillus sp. MN54. The results revealed that PHs showed significant phytotoxicity to maize plants and the application of strain MN54 and biochar greatly reduced the toxic effects of PHs on plants growth and physiology by increasing the nutrients uptake in PHs contaminated soil. Interestingly, the phytotoxicity of PHs on maize plants was further reduced in the co-supplementation of strain MN54 and biochar. Plants physiological (25–48%) and agronomic (38–47%) attributes were significantly higher as compared to only PHs contaminated soil in the co-supplementation of strain MN54 and biochar. Similarly, nitrogen (41%), phosphorus (43%) and potassium (37%) concentrations were also increased in the co-supplementation of strain MN54 and biochar. Furthermore, maize plants successfully phytoremediate a considerable amount of PHs from soil particularly in the presence of strain MN54 and biochar, and this PHs removal was further enhanced in the co-supplementation of strain MN54 and biochar (i.e., 46% and 77% of initial PHs were removed in unplanted and planted treatments, respectively). The present results indicate that co-supplementation of biochar and Bacillus sp. MN54 could be effective in enhancing the degradation of PHs and improving plant growth in the hydrocarbons contaminated soil.

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Section: Seedling Emergence and Growth Of Maize Plantsmentioning

confidence: 50%

Biochar and Bacillus sp. MN54 Assisted Phytoremediation of Diesel and Plant Growth Promotion of Maize in Hydrocarbons Contaminated Soil

et al. 2021

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“…In Poland, the grasses, i.e., Dactylis glomerata, Festuca rubra and Lolium perenne, were investigated most often [Małuszyński and Małuszyńska, 2009, Gmitrzuk et al, 2017, Dąbrowski, 2018. Screening of novel plant species, particularly natives, is recommended with selection focused on species phylogeny, plant morphological and functional traits as well as tolerance towards harsh environmental stresses [Kaur et al, 2017].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Soil Contamination with Diesel Oil on Germination Dynamics and Seedling Development of Selected Species of the Fabaceae Family

Pawluśkiewicz¹,

Gnatowski²,

Janicka³

2020

J. Ecol. Eng.

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The aim of the study was to determine the effect of soil contamination with diesel oil on the early development of three species of the Fabaceae family (Medicago lupulina L., Lotus corniculatus L., Trifolium repens L.). These species have a wide ecological range and they often occur on extensively used lawns. For these reasons, the knowledge on their tolerance to soil pollution with diesel oil can be of great importance in the creative and conservative cultivation of these plant species and their seed production for establishing the greenery of communication routes. The studies were carried out under controlled laboratory conditions. The soil substrates were composed of the loamy sand mixed with diesel oil in an amount of 2.5 g and 5.0 g per 1 kg of absolute dry mass of soil. The germination dynamics were analyzed. The measurements were conducted twice a day for 12 days after sowing. The development of seedlings was determined on the basis of the length, diameter, area and volume of the radicle. These features were determined on 20-day-old seedlings of the tested species. For the analysis of plant material, the technique of the scanned image was used in the "WinRhizo PRO 2009" software. It was proven that the tested species have various tolerances for the petrol oil in the soil and demonstrate various defense mechanisms under the stress conditions. The least changes of the seed germination rate on the soil with diesel oil against the control were indicated for L. corniculatus. The defense strategy of that species relied on the radicle development through increasing the diameter and-in consequence-the surface and the volume. M. lupulina also showed good germination capacity in the presence of diesel oil, but the radicle was shorter in comparison to the control. The germination rate of T. repens in the contaminated soil was significantly reduced. The recommendation for using not only L. corniculatus, but also M. lupulina on the contaminated areas should be taken into consideration.

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“…Although not statistically significant, the increase in average root biomass, compared to a corresponding decrease in average shoot biomass, in response to increasing mineral oil suggests the plant put more energy into root growth than shoot growth due to stress induced by oil contamination. Oil can not only reduce the amount of water and oxygen available for plant growth (Kaur et al, 2017) but also can interfere with plant-water relations by direct physical contact (coating of root tissues) thus negatively affecting shoot growth (Razmjoo and Adavi, 2012). Such phenomena affect the local biogeochemistry, for example changing nutrient dynamics (Xu and Johnson, 1997) which in turn cause changes in root morphology similar to those observed here (Franco et al, 2011;Hermans et al, 2006).…”

Section: Resultsmentioning

confidence: 62%

Plant growth, root distribution and non-aqueous phase liquid phytoremediation at the pore-scale

Oniosun

Harbottle

Tripathy

et al. 2019

Journal of Environmental Management

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The success of phytoremediation is dependent on the exposure of plants to contaminants, which is controlled by root distribution, physicochemical characteristics, and contaminant behaviour in the soil environment. Whilst phytoremediation has been successful in remediating hydrocarbons and other organic contaminants, there is little understanding of the impact of non-aqueous phase liquids (NAPLs) on plant behavior, root architecture and the resulting impact of this on phytoremediation. Light NAPLs (LNAPLs) may be present in pore spaces in the capillary zone as a continuous or semi-continuous phase, or as unconnected ganglia which act as individual contaminant sources. Experimental work with ryegrass (Lolium perenne) grown under hydroponic conditions in idealised pore scale models is presented, exploring how plant growth, root distribution and development, and oil removal are affected through direct physical contact with a model LNAPL (mineral oil). In the presence of low levels of LNAPL, a significant decrease in root length was observed, whilst at higher LNAPL levels root lengths increased due to root diversion and spreading, with evidence of root redistribution in the case of LNAPL contamination across multiple adjacent pores. Changes to root morphology were also observed in the presence of LNAPL with plant roots coarse and crooked compared to long, fine and smooth roots in uncontaminated columns. Root and shoot biomass also appear to be impacted by the LNAPL although the effects are complex, affected by both root diversion and thickening. Substantial levels of LNAPL removal were observed, with roots close to LNAPL sources able to remove dissolvedphase contamination, and root growth through LNAPL sources suggest that direct uptake/degradation is possible.

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A review of germination and early growth as a proxy for plant fitness under petrogenic contamination — knowledge gaps and recommendations

Cited by 50 publications

References 187 publications

Biochar and Bacillus sp. MN54 Assisted Phytoremediation of Diesel and Plant Growth Promotion of Maize in Hydrocarbons Contaminated Soil

Biochar and Bacillus sp. MN54 Assisted Phytoremediation of Diesel and Plant Growth Promotion of Maize in Hydrocarbons Contaminated Soil

The Influence of Soil Contamination with Diesel Oil on Germination Dynamics and Seedling Development of Selected Species of the Fabaceae Family

Plant growth, root distribution and non-aqueous phase liquid phytoremediation at the pore-scale

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