Chlorpyrifos-induced changes in the antioxidants and fatty acid compositions of <i>Chroococcus turgidus </i>
NTMS12

Kumar, M. Suresh; Ramasamy, P.; Jeon, Byong‐Hun; Thajuddin, Nooruddin

doi:10.1111/lam.12311

Cited by 22 publications

(16 citation statements)

References 29 publications

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“…According to the RNA‐seq results, SS was found to regulate the performance of SSB larvae through fatty acid biosynthesis and pyruvate metabolism pathways, and several genes related to these two pathways were suppressed in SSB larvae (Table 4). Chlorpyrifos is one of the most widely used organophosphorus insecticides (Lee, Strand, & Doty, 2012) and is widely used in paddy fields to control pests such as SSB and planthoppers (Kumar, Praveenkumar, Jeon, & Thajuddin, 2014). In addition to genes related to fatty acid biosynthesis and pyruvate metabolism pathways, many other genes, such as P450s, CarEs, and glutathione transferases, may also mediate Si‐triggered responses in SSB.…”

Section: Discussionmentioning

confidence: 99%

Silicon‐mediated multiple interactions: Simultaneous induction of rice defense and inhibition of larval performance and insecticide tolerance of Chilo suppressalis by sodium silicate

Wang

Xue

et al. 2020

Ecology and Evolution

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The rice striped stem borer (SSB, Chilo suppressalis) is one of the most destructive pests of rice plants. Si‐mediated rice defense against various pests has been widely reported, and sodium silicate (SS) has been used as an effective source of silicon for application to plants. However, there is quite limited information about the direct effects of Si application on herbivorous insects. SSB larval performance and their insecticide tolerance were examined after they had been reared either on rice plants cultivated in nutrient solution containing 0.5 and 2.0 mM SS or on artificial diets with 0.1% and 0.5% SS. SS amendment in either rice culture medium or artificial diets significantly suppressed the enzymatic activities of acetylcholinesterase, glutathione S‐transferases, and levels of cytochrome P450 protein in the midgut of C. suppressalis larvae. Larvae fed on diets containing SS showed lower insecticide tolerance. Additionally, RNA‐seq analysis showed that SS‐mediated larval insecticide tolerance was closely associated with fatty acid biosynthesis and pyruvate metabolism pathways. Our results suggest that Si not only enhances plant resistance against insect herbivore, but also impairs the insect's capacity to detoxify the insecticides. This should be considered as another important aspect in Si‐mediated plant–insect interaction and may provide a novel approach of pest management.

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Section: Discussionmentioning

confidence: 99%

Silicon‐mediated multiple interactions: Simultaneous induction of rice defense and inhibition of larval performance and insecticide tolerance of Chilo suppressalis by sodium silicate

Wang

Xue

et al. 2020

Ecology and Evolution

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“…The chlorophyll and carotenoid contents of cyanobacterial species were also decreased on exposure to pesticides including chlorpyrifos, endosulfan and tebuconazole. Polyunsaturated fatty acids in chloroplast membrane are highly susceptible to peroxidation leading to inhibition of chlorophyll synthesis (Kumar et al 2012b;Kumar et al 2014). Thus, the pesticide-induced stress imposes an inhibitory effect on the pigment synthesis.…”

Section: Photosynthetic Pigmentsmentioning

confidence: 99%

“…Antioxidants are generated in the cell especially under high environmental stress conditions (Okamoto et al 2001). The SOD activity has been reported to increase in Chroococcus turgidus, Nostoc muscorum, Anabaena variabilis and Aulosira fertilissimaon exposure to endosulfon (10 mg L −1 ) and chlorpyrifos (6 mg L −1 ) (Galhano et al 2011b;Kumar et al 2014).…”

Section: Antioxidants (Sod and Cat)mentioning

confidence: 99%

“…Recent studies have also reported high cellular proline accumulation in many cyanobacterial species exposed to pesticides (Galhano et al 2011a, b). The increase in proline content can be an adaptive response against lipid peroxidation under stress conditions Kumar et al 2014). Proline reduces the generation of free radicals under stress conditions (Alia and Saradhi 1993).…”

Section: Protein and Prolinementioning

confidence: 99%

“…Free proline accumulation has been considered as an important biomarker of tolerance capacity against various stresses in plants, bacteria, protozoa, cyanobacteria and marine invertebrates. Proline functions in crucial cellular detoxification mechanism and scavenging of ROS (Kumar et al 2014), thereby reducing the damage due to oxidative stress.…”

Section: Protein and Prolinementioning

confidence: 99%

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Insecticides induced biochemical changes in freshwater microalga Chlamydomonas mexicana

Kumar

Kabra

Min

et al. 2015

Environ Sci Pollut Res

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The effect of insecticides (acephate and imidacloprid) on a freshwater microalga Chlamydomonas mexicana was investigated with respect to photosynthetic pigments, carbohydrate and protein contents, fatty acids composition and induction of stress indicators including proline, superoxide dismutase (SOD) and catalase (CAT). C. mexicana was cultivated with 1, 5, 10, 15, 20 and 25 mg L(-1) of acephate and imidacloprid. The microalga growth increased with increasing concentrations of both insecticides up to 15 mg L(-1), beyond which the growth declined compared to control condition (without insecticides). C. mexicana cultivated with 15 mg L(-1) of both insecticides for 12 days was used for further analysis. The accumulation of photosynthetic pigments (chlorophyll and carotenoids), carbohydrates and protein was decreased in the presence of both insecticides. Acephate and imidacloprid induced the activities of superoxide dismutase (SOD) and catalase (CAT) and increased the concentration of proline in the microalga, which play a defensive role against various environmental stresses. Fatty acid analysis revealed that the fraction of polyunsaturated fatty acids decreased on exposure to both insecticides. C. mexicana also promoted 25 and 21% removal of acephate and imidacloprid, respectively. The biochemical changes in C. mexicana on exposure to acephate and imidacloprid indicate that the microalga undergoes an adaptive change in response to the insecticide-induced oxidative stress.

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Formulation of cartap hydrochloride crosslinked chitosan tripolyphosphate nanospheres and its characterization

2021

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Chlorpyrifos-induced changes in the antioxidants and fatty acid compositions of Chroococcus turgidus NTMS12

Cited by 22 publications

References 29 publications

Silicon‐mediated multiple interactions: Simultaneous induction of rice defense and inhibition of larval performance and insecticide tolerance of Chilo suppressalis by sodium silicate

Silicon‐mediated multiple interactions: Simultaneous induction of rice defense and inhibition of larval performance and insecticide tolerance of Chilo suppressalis by sodium silicate

Insecticides induced biochemical changes in freshwater microalga Chlamydomonas mexicana

Formulation of cartap hydrochloride crosslinked chitosan tripolyphosphate nanospheres and its characterization

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