Serveur d'exploration Glutathion S-transférase végétale

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Target Activity of Isaria tenuipes (Hypocreales: Clavicipitaceae) Fungal Strains against Dengue Vector Aedes aegypti (Linn.) and Its Non-Target Activity Against Aquatic Predators.

Identifieur interne : 000038 ( Main/Exploration ); précédent : 000037; suivant : 000039

Target Activity of Isaria tenuipes (Hypocreales: Clavicipitaceae) Fungal Strains against Dengue Vector Aedes aegypti (Linn.) and Its Non-Target Activity Against Aquatic Predators.

Auteurs : Sengodan Karthi [Inde] ; Prabhakaran Vasantha-Srinivasan [Inde] ; Raja Ganesan [Corée du Sud] ; Venkatachalam Ramasamy [Inde] ; Sengottayan Senthil-Nathan [Inde] ; Hanem F. Khater [Égypte] ; Narayanaswamy Radhakrishnan [Inde] ; Kesavan Amala [Inde] ; Tae-Jin Kim [Corée du Sud] ; Mohamed A. El-Sheikh [Arabie saoudite] ; Patcharin Krutmuang [Thaïlande]

Source :

RBID : pubmed:33003327

Abstract

The present investigation aimed to determine the fungal toxicity of Isaria tenuipes (My-It) against the dengue mosquito vector Aedes aegypti L. and its non-target impact against the aquatic predator Toxorhynchitessplendens. Lethal concentrations (LC50 and LC90) of My-It were observed in 2.27 and 2.93 log ppm dosages, respectively. The sub-lethal dosage (My-It-1 × 104 conidia/mL) displayed a significant oviposition deterrence index and also blocked the fecundity rate of dengue mosquitos in a dose-dependent manner. The level of major detoxifying enzymes, such as carboxylesterase (α-and β-) and SOD, significantly declined in both third and fourth instar larvae at the maximum dosage of My-It 1 × 105 conidia/mL. However, the level of glutathione S-transferase (GST) and cytochrome P-450 (CYP450) declined steadily when the sub-lethal dosage was increased and attained maximum reduction in the enzyme level at the dosage of My-It (1 × 105 conidia/mL). Correspondingly, the gut-histology and photomicrography results made evident that My-It (1 × 105 conidia/mL) heavily damaged the internal gut cells and external physiology of the dengue larvae compared to the control. Moreover, the non-target toxicity against the beneficial predator revealed that My-It at the maximum dosage (1 × 1020 conidia/mL) was found to be less toxic with <45% larval toxicity against Tx.splendens. Thus, the present toxicological research on Isaria tenuipes showed that it is target-specific and a potential agent for managing medically threatening arthropods.

DOI: 10.3390/jof6040196
PubMed: 33003327


Affiliations:


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Le document en format XML

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<title xml:lang="en">Target Activity of
<i>Isaria tenuipes</i>
(Hypocreales: Clavicipitaceae) Fungal Strains against Dengue Vector
<i>Aedes aegypti</i>
(Linn.) and Its Non-Target Activity Against Aquatic Predators.</title>
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<title xml:lang="en">Target Activity of
<i>Isaria tenuipes</i>
(Hypocreales: Clavicipitaceae) Fungal Strains against Dengue Vector
<i>Aedes aegypti</i>
(Linn.) and Its Non-Target Activity Against Aquatic Predators.</title>
<author>
<name sortKey="Karthi, Sengodan" sort="Karthi, Sengodan" uniqKey="Karthi S" first="Sengodan" last="Karthi">Sengodan Karthi</name>
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<country xml:lang="fr">Inde</country>
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<name sortKey="Vasantha Srinivasan, Prabhakaran" sort="Vasantha Srinivasan, Prabhakaran" uniqKey="Vasantha Srinivasan P" first="Prabhakaran" last="Vasantha-Srinivasan">Prabhakaran Vasantha-Srinivasan</name>
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<name sortKey="Senthil Nathan, Sengottayan" sort="Senthil Nathan, Sengottayan" uniqKey="Senthil Nathan S" first="Sengottayan" last="Senthil-Nathan">Sengottayan Senthil-Nathan</name>
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<name sortKey="Radhakrishnan, Narayanaswamy" sort="Radhakrishnan, Narayanaswamy" uniqKey="Radhakrishnan N" first="Narayanaswamy" last="Radhakrishnan">Narayanaswamy Radhakrishnan</name>
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<name sortKey="Kim, Tae Jin" sort="Kim, Tae Jin" uniqKey="Kim T" first="Tae-Jin" last="Kim">Tae-Jin Kim</name>
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<nlm:affiliation>Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.</nlm:affiliation>
<country xml:lang="fr">Arabie saoudite</country>
<wicri:regionArea>Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451</wicri:regionArea>
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<div type="abstract" xml:lang="en">The present investigation aimed to determine the fungal toxicity of
<i>Isaria tenuipes</i>
(My-It) against the dengue mosquito vector
<i>Aedes aegypti</i>
L. and its non-target impact against the aquatic predator
<i>Toxorhynchites</i>
<i>splendens</i>
. Lethal concentrations (LC
<sub>50</sub>
and LC
<sub>90</sub>
) of My-It were observed in 2.27 and 2.93 log ppm dosages, respectively. The sub-lethal dosage (My-It-1 × 10
<sup>4</sup>
conidia/mL) displayed a significant oviposition deterrence index and also blocked the fecundity rate of dengue mosquitos in a dose-dependent manner. The level of major detoxifying enzymes, such as carboxylesterase (α-and β-) and SOD, significantly declined in both third and fourth instar larvae at the maximum dosage of My-It 1 × 10
<sup>5</sup>
conidia/mL. However, the level of glutathione S-transferase (GST) and cytochrome P-450 (CYP450) declined steadily when the sub-lethal dosage was increased and attained maximum reduction in the enzyme level at the dosage of My-It (1 × 10
<sup>5</sup>
conidia/mL). Correspondingly, the gut-histology and photomicrography results made evident that My-It (1 × 10
<sup>5</sup>
conidia/mL) heavily damaged the internal gut cells and external physiology of the dengue larvae compared to the control. Moreover, the non-target toxicity against the beneficial predator revealed that My-It at the maximum dosage (1 × 10
<sup>20</sup>
conidia/mL) was found to be less toxic with <45% larval toxicity against
<i>Tx.</i>
<i>splendens</i>
. Thus, the present toxicological research on
<i>Isaria tenuipes</i>
showed that it is target-specific and a potential agent for managing medically threatening arthropods.</div>
</front>
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<Day>02</Day>
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<ArticleTitle>Target Activity of
<i>Isaria tenuipes</i>
(Hypocreales: Clavicipitaceae) Fungal Strains against Dengue Vector
<i>Aedes aegypti</i>
(Linn.) and Its Non-Target Activity Against Aquatic Predators.</ArticleTitle>
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<ELocationID EIdType="doi" ValidYN="Y">10.3390/jof6040196</ELocationID>
<Abstract>
<AbstractText>The present investigation aimed to determine the fungal toxicity of
<i>Isaria tenuipes</i>
(My-It) against the dengue mosquito vector
<i>Aedes aegypti</i>
L. and its non-target impact against the aquatic predator
<i>Toxorhynchites</i>
<i>splendens</i>
. Lethal concentrations (LC
<sub>50</sub>
and LC
<sub>90</sub>
) of My-It were observed in 2.27 and 2.93 log ppm dosages, respectively. The sub-lethal dosage (My-It-1 × 10
<sup>4</sup>
conidia/mL) displayed a significant oviposition deterrence index and also blocked the fecundity rate of dengue mosquitos in a dose-dependent manner. The level of major detoxifying enzymes, such as carboxylesterase (α-and β-) and SOD, significantly declined in both third and fourth instar larvae at the maximum dosage of My-It 1 × 10
<sup>5</sup>
conidia/mL. However, the level of glutathione S-transferase (GST) and cytochrome P-450 (CYP450) declined steadily when the sub-lethal dosage was increased and attained maximum reduction in the enzyme level at the dosage of My-It (1 × 10
<sup>5</sup>
conidia/mL). Correspondingly, the gut-histology and photomicrography results made evident that My-It (1 × 10
<sup>5</sup>
conidia/mL) heavily damaged the internal gut cells and external physiology of the dengue larvae compared to the control. Moreover, the non-target toxicity against the beneficial predator revealed that My-It at the maximum dosage (1 × 10
<sup>20</sup>
conidia/mL) was found to be less toxic with <45% larval toxicity against
<i>Tx.</i>
<i>splendens</i>
. Thus, the present toxicological research on
<i>Isaria tenuipes</i>
showed that it is target-specific and a potential agent for managing medically threatening arthropods.</AbstractText>
</Abstract>
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<LastName>Karthi</LastName>
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<Affiliation>Division of Bio Pesticides and Environmental Toxicology, Sri Paramakalyani Centre for Excellence in Environmental Sciences, Manonmaniam Sundaranar University, Alwarkurichi, Tirunelveli 627412, Tamil Nadu, India.</Affiliation>
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<LastName>Vasantha-Srinivasan</LastName>
<ForeName>Prabhakaran</ForeName>
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<Identifier Source="ORCID">0000-0002-3968-7095</Identifier>
<AffiliationInfo>
<Affiliation>Department of Biotechnology, Peter's Institute of Higher Education and Research, Avadi, Chennai 600054, Tamil Nadu, India.</Affiliation>
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<AffiliationInfo>
<Affiliation>Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand.</Affiliation>
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<GrantID>Dr. D. S. Kothari Postdoctoral Fellowship (201920- BL/18-19/0168)</GrantID>
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