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Fabra, Adriana; Angelini, Jorge Guillermo; Donolo, Ana; Permigiani, Marcela; Castro, Stella

doi:10.1023/a:1000987524112

Cited by 9 publications

(1 citation statement)

References 26 publications

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“…It seems that oxidative stress contributes to the development and severity of syndromes in acute intoxication with these insecticides [77]. Mancozeb stimulated oxidative stress, while the amount of antioxidant serum enzymes decreased significantly; Fabra et al demonstrated that this fungicide caused significant biochemical changes in cell membranes [78].…”

Section: Influence Of Pesticides On Histological and Biochemical Paramentioning

confidence: 99%

The Morphophysiological, Histological, and Biochemical Response of Some Nontarget Organisms to the Stress Induced by the Pesticides in the Environment

Soare¹,

Păunescu²,

Maria³

2019

Pesticides - Use and Misuse and Their Impact in the Environment

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Ferns, amphibians, and fish are groups of nontarget organisms affected by many types of pesticides that end up in the environment. This chapter aims to approach the following themes: the influence of different pesticides on the spore germination process and on the differentiation of their gametophyte; aspects regarding the impact of some pesticides on breathing in fish (physiology and histopathology at the branchial level), as well as a series of effects at the hematological and biochemical levels; and changes of some hematological, biochemical, and structural parameters in amphibians. Species that are not directly targeted by the action of the pesticide in the environment, ferns can be used in their gametophyte stage, young or mature sporophyte in different biotests to evaluate the risk associated with these substances. The biochemical, hemathological, and histopathological changes recorded in both fish and amphibians can be considered biomarkers of pesticide pollution.2 Different research on morphology, physiology, and biochemistry of gametophyte and sporophyte of fern species has shown that pesticides affect these processes, depending on species sensitivity, concentration, and exposure time.Fish assimilates pesticides through gills or contaminated food. Gills are the main channel of pesticide penetration, which is why any disease at this level will have a great influence on the adaptive changes in the fish body. The effects of pesticides on fish are numerous and varied: they cause mortality both directly and indirectly, by starvation (destroying the organisms they feed on), affects hatching, growth rate, can lead to malformations, affects reproduction rate, modifies enzyme activity, and cause histopathological changes in organs, genetic effects, etc. Although under experimental conditions fish can survive pesticides in different concentrations, under natural conditions they are more vulnerable to disease, predators, no longer competitive, and no longer dealing with stress caused by changing seasonal temperature, reproduction season or temporary starvation.Amphibians are organisms that populate aquatic ecosystems, being involved in aquatic trophic chains both by eating food and being food for predators. Over the last 20 years, scientists have reported the global decline of amphibian populations. Therefore, in 1996, the International Union for Conservation of Nature registered 156 species of amphibians in the Red List, and recent data show that 1856 species (about 32.5% of all amphibian species) are currently registered. Influence of pesticides on spore germination and gametophyte differentiation in ferns 2.1 Gametophyte of fernsFerns and lycophytes (pteridophytes) represent 4% of Terra's vascular plants [1], numbering about 11,000 species in 40 families and 300 genres [2]. Different species of pteridophytes are used as medicinal, food, horticultural, and agricultural plants [1] and in the last decade as organisms in acute [3] and chronic phytotoxicity tests [4].The life cycle of pteridophytes is characterized b...

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Section: Influence Of Pesticides On Histological and Biochemical Paramentioning

confidence: 99%

The Morphophysiological, Histological, and Biochemical Response of Some Nontarget Organisms to the Stress Induced by the Pesticides in the Environment

Soare¹,

Păunescu²,

Maria³

2019

Pesticides - Use and Misuse and Their Impact in the Environment

View full text Add to dashboard Cite

show abstract

Identification of Novel Microbial Strains for Reduced Pesticide Use in Millets

Hazra,

Dey,

Mukherjee

et al. 2023

Rhizosphere Biology

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Nitrogen fixation with the soybean crop in Brazil: Compatibility between seed treatment with fungicides and bradyrhizobial inoculants

2009

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Biological nitrogen fixation with the soybean crop can be improved by seed inoculation with superior Bradyrhizobium strains, but factors that reducethe population of inoculated bradyrhizobiaon the seedwill directly affect the efficiencyof the process. Seed treatment with fungicides has been broadly practiced as cheap insurance against seed-and soil-borne pathogens, but toxicity of most fungicides to bradyrhizobia has often been underestimated. The compatibility between seed treatment with fungicides in single or mixed applications (including Benomyl, Captan, Carbendazin, Carboxin, Difenoconazole, Thiabendazole, Thiram, Tolylfluanid) and bradyrhizobial inoculants was examined in laboratory, greenhouse and field experiments during five crop seasons in Brazil. Bacterial survival on the seeds was severely affected by all fungicides, resulting in mortalities of up to 62% after only 2 h and of 95% after 24 h. Fungicides also reduced nodule number, total N in grains and decreased yield by up to 17%. The toxic effects of fungicides were more drastic in sandy soils withoutsoybean inoculation and cropping history, reducing nodulation by up to 87%, but were also important in areas with established populations of soybean bradyrhizobia. Therefore, fungicides should be used only when the seeds or soil are contaminated with pathogens,otherwisebiologicalN 2 fixation may be severely affected.

show abstract

Untitled

Cited by 9 publications

References 26 publications

The Morphophysiological, Histological, and Biochemical Response of Some Nontarget Organisms to the Stress Induced by the Pesticides in the Environment

The Morphophysiological, Histological, and Biochemical Response of Some Nontarget Organisms to the Stress Induced by the Pesticides in the Environment

Identification of Novel Microbial Strains for Reduced Pesticide Use in Millets

Nitrogen fixation with the soybean crop in Brazil: Compatibility between seed treatment with fungicides and bradyrhizobial inoculants

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