Atmospheric Absorption of Fluoride by Cultivated Species. Leaf Structural Changes and Plant Growth

Mesquita, Geisa Lima; Tanaka, Francisco André Ossamu; Cantarella, Heitor; Mattos, Dirceu

doi:10.1007/s11270-010-0694-4

Cited by 26 publications

(14 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Contudo, Mesquita et al (2011) verificaram pequenas alterações anatômicas na ausência de danos visuais, principalmente a ocorrência de perda no contorno das paredes celulares, além da retração do parênquima lacunoso quando esta espécie foi submetida à contaminação pelo F.…”

Section: Concentração De Flúor Nas Folhas E Sintomas Visuais Da Toxicunclassified

Suscetibilidade do capim-colonião e de cultivares de milho ao flúor

et al. 2011

Self Cite

View full text Add to dashboard Cite

A emissão de fluoretos à atmosfera oriunda da produção de superfosfatos e de cerâmica tem causado preocupação pelo efeito tóxico às plantas, contudo são poucos os estudos desenvolvidos acerca do problema com espécie de interesse econômico agrícola. Desenvolveu-se o estudo para avaliar o efeito do flúor (F) atmosférico em plantas de capim-colonião e de cultivares de milho, utilizando como referência espécies bioindicadoras do tipo sensível e tolerante. As plantas foram expostas à contaminação pelo F atmosférico por curtos períodos durante 32 dias em sistema de nebulização com 0,16 mol L -1 de ácido fluorídrico no ambiente interno de uma câmara (~0,20 mmol m -3 de F), havendo um controle não exposto, com quatro repetições. A exposição das plantas ao F causou aumento da concentração do elemento nas folhas até 60 mg kg -1 para o capim-colonião, e entre 100 mg kg -1 nas folhas novas e 170 mg kg -1 nas folhas velhas para quatro cultivares de milho, o que demonstrou o efeito cumulativo do elemento no ambiente. Sintomas visuais da toxicidade foram observados nas plantas e se caracterizaram pela ocorrência de cloroses e necroses na lâmina foliar. O capim-colonião é uma espécie bastante sensível ao poluente no ar. As cultivares de milho DKB 390 e Ômega 8315 também são mais sensíveis ao F quando comparadas às AG7088 e 2B707. Os teores de clorofila a nas plantas foram mais afetados pelo F em relação aos teores de clorofila b.Palavras-chave: Panicum maximum Jacq.; Zea mays L.; bioindicadoras; fitotoxicidade; clorofila. Susceptibility of guineagrass and corn varieties to fluoride AbstractThe emission of fluorides to the atmosphere arising from the production of superphosphate and ceramics has caused concern because of toxic effects on plants. However, few studies have been developed about fluoride (F) pollution with agricultural crops. A study evaluated the effect of atmospheric F in guinea grass and maize plants, using reference bioindicator plants of the type sensitive and tolerant. The plants were exposed to atmospheric contamination by F for short periods during 32 days in a misting system delivering 0.16 mol L -1 of hydrofluoric acid inside a chamber (~ 0.20 mmol m -3 of F). Unexposed plants (control) were also evaluated, with four replications. Exposure of plants to F caused an increase in leaf fluoride concentration up to 60 mg kg -1 for guinea grass and 100 mg kg -1 in the new leaves and 170 mg kg -1 in the old leaves for four varieties of maize, which demonstrated the cumulative effect of the element in the environment. Visual symptoms of toxicity were observed in plants and characterized by occurrence of chlorosis and necrosis on leaf blades. The guinea grass proved to be a species very sensitive to air pollution. The maize varieties DKB 390 and Omega 8315 were more sensitive to F when compared to the AG7088 and 2B707 ones. Chlorophyll a in plants was more affected by the F in relation to the contents of chlorophyll b.

show abstract

Section: Concentração De Flúor Nas Folhas E Sintomas Visuais Da Toxicunclassified

Suscetibilidade do capim-colonião e de cultivares de milho ao flúor

et al. 2011

Self Cite

View full text Add to dashboard Cite

show abstract

“…The alterations in the epicuticular layer may compromise the survival of plant species, as the epicuticular layer is the first defensive wall against the environmental stress (PAL et al, 2002). The structure of the epicuticular wax are epidermic parameters and are related to differences in plant susceptibility or resistance to pollution (NEINHUIS; BARTHLOTT, 1998), being that micromorphology is a promising biomarker on the evaluation of stresses caused by atmospheric pollutants (SILVA et al 2005;SANT'ANNA-SANTOS et al, 2006a,b).…”

Section: Discussionmentioning

confidence: 99%

“…The deposition of particulate matter on the leaf surface causes blockage of solar radiation by shadowing the leaf surface, altering the pigment synthesis, and the photosynthetic rate (HIRANO et al, 1995;NAIDOO;CHIRKOOT, 2004;OLIVEIRA et al, 2007;KUKI et al, 2008b;PEREIRA et al, 2009). Additionally, the obstruction of the stoma may cause the increase of the leaf temperature, the alteration of the transpiratory rate (PEREIRA et al, 2009) and anatomical and ultrastructural modifications in leaf tissues organization (SILVA et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Characters of the epidermis, epicuticular wax deposition pattern, cuticle topography, epidermic cells shape, stomata distribution and position in relation to the other epidermal cells, are among the parameters involved in the plant responses to pollutants (SILVA et al, 2005;SANT'ANNA-SANTOS et al, 2006a,b, 2007BALASOORIYA et al, 2009;KARDEL et al, 2010;RAÍ et al, 2010;MESQUITA et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Early detection of injuries in leaves of Clusia hilariana Schltdl. (Clusiaceae) caused by particulate deposition of iron

et al. 2014

View full text Add to dashboard Cite

-This study aims to evaluate the prognostic value of microscopic parameters of asymptomatic leaves of Clusia hilariana Schltdl. subjected to particulate deposition of iron (2.14 mg cm -2 day -1 ) for 45 consecutive days. Samples of young and expanded leaves without symptoms were collected and subjected to light and scanning electron microscopy techniques. The height of the epidermal cells on both surfaces of the leaf and the thickness of the hypodermis, the chlorophyll parenchyma, and the leaf blade were measured. Micromorphological injury occurred in the abaxial surface of young leaves and on both surfaces of expanded leaves. Erosion of the epicuticular wax and cuticle rupture were frequent on the adaxial surface, while on the abaxial surface of both leaves there was a loss of sinuosity on the anticlinal wall of the epidermal cells, stomatal deformity and obstruction. Micromorphometric alterations were seen in all leaf tissues except in the height of epidermic cells, probably due to the thick cuticle and prominent cuticular flanges. The highest difference in thickness of the leaf blade was seen in young leaves of plants subjected to SPMFe, indicating greater sensibility to particulate iron in comparison to the expanded leaves. The micromorphological and micromorphometric alterations in the leaf blade of Clusia hilariana Schltdl. showed the prognostic potential of these tools on the evaluation of impacts caused by the deposition of particulate matter, especially in the 'Restinga' natural vegetation, where the exposure is increasing due to the presence of iron ore industry in their surroundings.Keywords: Atmospheric pollution; Leaf anatomy; Restinga. DETECÇÃO PRECOCE DE INJÚRIAS EM FOLHAS DE

show abstract

“…One experiment conducted by Mesquita et al [38], reported that damage to the epidermis and stomata of leaves from young plants of coffee and orange when these are exposed to Fluoride accumulation also hampered the photosynthesis.…”

Section: Effects Of Fl Uoride On Photosynthesismentioning

confidence: 99%

Effects of Fluoride on Respiration and Photosynthesis in Plants: An Overview

Kumar¹,

Giri²,

Vivek³

et al. 2018

Ann Environ Sci Toxicol

View full text Add to dashboard Cite

Among all the halides, Fluoride (F) caused most severe adverse effects on plants through air, soil, and water, exposure. Besides the nutritional importance of this element, after its desirable limits in the plants, it caused adverse effects on plants through interfering with various physic-biochemical parameters; with or without any visible symptoms of injury. Due to higher level of fl uorides in plants, it also causes less development of plants through affecting several pathways associated with photosynthesis, respiration, protein synthesis, carbohydrate metabolism, and nucleotide synthesis. Photosynthesis and respiration are the most important process in the plants to acquire the basic energy and their utilization. Fluoride has great effective importance on these to pathways. On this view, the present review critically discusses the toxic effects on respiration and photosynthesis of agricultural crops and trees.

show abstract

Atmospheric Absorption of Fluoride by Cultivated Species. Leaf Structural Changes and Plant Growth

Cited by 26 publications

References 30 publications

Suscetibilidade do capim-colonião e de cultivares de milho ao flúor

Suscetibilidade do capim-colonião e de cultivares de milho ao flúor

Early detection of injuries in leaves of Clusia hilariana Schltdl. (Clusiaceae) caused by particulate deposition of iron

Effects of Fluoride on Respiration and Photosynthesis in Plants: An Overview

Contact Info

Product

Resources

About