The effect of mercury on the establishment of Pinus rigida seedlings and the development of their ectomycorrhizal communities

Crane, Sharron; Barkay, Tamar; Dighton, John

doi:10.1016/j.funeco.2011.12.001

Cited by 12 publications

(5 citation statements)

References 30 publications

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“…To minimize the detrimental effects of heavy metal exposure and their accumulation, plants have evolved detoxification mechanisms (Yadav, 2010). Metals are toxic to both plants and fungi, and elevated soil metal concentrations have been documented to change the structure of ectomycorrhizal communities and high concentrations of mercury (0-366 μg g -1 Hg) in soil decreased survival of Pinus rigida seedlings (Crane et al, 2012). The mercury uptake could produce serious damage to plants by impairment of the chlorophyll synthesis and reduction of photosynthesis as a result of substitution of Mg by Hg (Lavado et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

Effect of Mercury on Seed Germination and Seedling Growth of Mungbean (<i>Vigna radiata</i> (L.) Wilczek)

Muhammad¹,

Maria²,

Mohammad³

et al. 2015

Journal of Applied Sciences and Environmental Management

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Among the toxic elements release in the environment, mercury is considered highly toxic to the growth of plants. The present studies report the effects of different concentrations (1, 3, 5 and 7 mM) of mercury on seed germination and seedling growth performance of mungbea (Vigna radiata) as compared to control. Mercury treatment in the form of mercuric chloride at 1 mM did not show significant reduction in seed germination of V. radiata as compared to control. Increase in concentration of mercury to 3 mM produced significant (p<0.05) reduction in seed germination. Mercury treatment at 7 mM-produced significant (p<0.05) reduction in seedling and root length of the plants. The increase in concentration of mercury treatment at 7 mM was found sufficient to cause significant reductions in seedling dry weight of as compared to control. Mercury treatment at all concentrations decreased seed germination, shoot, and root length and seedling dry weight. Increase in mercury concentration upto 7 mM showed highest percentage of decrease in seed germination (42%), seedling length (70%), root length (66%) and seedling dry weight (47%) of mungbean as relation to control. V. radiata were more sensitive to mercury stress in seedling growth and root elongation than seed germination. The seedlings of V. radiata showed greater tolerance to mercury at 1 mM (85.83 %) and lowest at 7 mM (34.13%). These results show that there is a negative effect towards germination and growth of mungbean by mercury treatment. Minimum use of the mercury containing compounds in fungicide, pesticide and nematicide is recommended. Special care should be taken to monitor the toxic pollutants available in the immediate environment. The accumulation of such types of toxic pollutants in larger concentrations by crop can produce harmful effects to crops and ecosystem as well. © JASEM http://dx

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Section: Resultsmentioning

confidence: 99%

Effect of Mercury on Seed Germination and Seedling Growth of Mungbean (<i>Vigna radiata</i> (L.) Wilczek)

Muhammad¹,

Maria²,

Mohammad³

et al. 2015

Journal of Applied Sciences and Environmental Management

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“…This suggests that the fungal community of the blueberry phylloplane is resilient to Hg pollution at levels that simulate atmospheric deposition and even those at several fold higher that ambient. There may be differences in Hg resistance or tolerance of different fungal functional groups to Hg, as ectomycorrhizal communities have been shown to be susceptible to Hg exposure (Crane et al 2012). Phylloplane fungi are adapted to the stressed and fluctuating leaf habitat, for example melanin production protects against UV radiation (Magan 2007).…”

Section: Resultsmentioning

confidence: 99%

“…In the NJ Pine Barrens, Hg contamination is atmospheric in origin as the site is not located near a point source of Hg pollution (Crane et al 2012). Therefore, sequestration of Hg by plant foliage is likely a sink for the deposited mercury.…”

Section: Introductionmentioning

confidence: 99%

Mercury affects the phylloplane fungal community of blueberry leaves to a lesser extent than plant age

2017

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Mercury (Hg) is a toxic heavy metal pollutant that is globally distributed due to atmospheric deposition to non-point source locations. Leaf surfaces directly sequester atmospheric Hg. Little is known of how phylloplane (leaf surface) fungi are influenced by Hg pollution. Through culture-based methodology, this study analysed fungal phylloplane community identity following a single-dose response to HgCl2 concentrations between 0 and 20 times ambient levels for New Jersey. Time passed following the Hg addition had a strong influence on the fungal phylloplane community, associated with natural successional changes. Mercury, however, did not significantly affect the phylloplane community identity. Notably, the control group was not significantly different than any of the Hg treatments. How the phylloplane functional group responds to Hg pollution has not been previously investigated and more research is needed to fully understand how Hg influences fungal phylloplane ecology.

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“…Efecto de la concentración de mercurio en el suelo, altura inicial e interacción entre las variables de respuesta consideradas en el estudio. Por su parte P. martinezii, fue la única especie de pino que no presentó ninguna diferencia significativa entre los diferentes tratamientos de exposición al mercurio, lo cual coincide con los resultados del experimento realizado en mesocosmos (Osuna-Vallejo et al, 2019) así como en otras especies de Pinus (P. rigida) en las que se ha podido experimentar con mercurio (Crane et al, 2012). En cambio, P. pseudostrobus mostró una reducción de crecimiento sustancial en la altura final, en la biomasa de raíz y biomasa aérea, de manera similar a otros estudios (Osuna-Vallejo et al, 2019, Helmisaari et al, 1999Godbold y Huttermann, 1986;Kahle, 1993;Crane et al, 2012).…”

Section: Discussionunclassified

Respuesta de plantas jóvenes de cuatro especies de coníferas a la exposición al mercurio

Altonar-Gómez

Tzintzun-Pedraza

Osuna-Vallejo

et al. 2021

MYB

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Las propiedades fisicoquímicas de los residuos mineros tienden a inhibir los procesos de formación del suelo y el crecimiento de las plantas. Sin embargo, existen especies capaces de crecer en ambientes contaminados y absorber metales pesados. En Tlalpujahua, Michoacán, como en muchos sitios mineros, hay depósitos contaminados con mercurio a causa de las prácticas de beneficio de los metales. Se estudió el efecto de la presencia de mercurio en el sustrato, en el desempeño de plantas jóvenes de coníferas con individuos de Pinus devoniana Lindley, Pinus pseudostrobus Lindley, Pinus martinezii E. Larsen y Juniperus deppeana Steud. Las plantas de cada especie se sometieron a cinco dosis de mercurio adicionadas al sustrato y se midió la altura y se cuantificó la biomasa seca aérea y de raíz. Pinus devoniana y Pinus pseudostrobus disminuyeron su crecimiento después de ser expuestas a 15 ppm de mercurio en disolución. Las raíces de P. devoniana presentaron menor biomasa que las raíces de las plantas control. Pinus martinezii fue resistente al mercurio, mientras que J. deppeana muestra una tolerancia intermedia a la presencia de mercurio. Los resultados obtenidos indican que J. deppeana y P. martinezii son especies tolerantes al mercurio potencialmente útiles para la rehabilitación de sitios contaminados.

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The effect of mercury on the establishment of Pinus rigida seedlings and the development of their ectomycorrhizal communities

Cited by 12 publications

References 30 publications

Effect of Mercury on Seed Germination and Seedling Growth of Mungbean (<i>Vigna radiata</i> (L.) Wilczek)

Effect of Mercury on Seed Germination and Seedling Growth of Mungbean (<i>Vigna radiata</i> (L.) Wilczek)

Mercury affects the phylloplane fungal community of blueberry leaves to a lesser extent than plant age

Respuesta de plantas jóvenes de cuatro especies de coníferas a la exposición al mercurio

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