Endocrine Disruptors–‘Food’ for Thought

Mukherjee, Raktim; Pandya, Parth; Baxi, Darshee; Ramachandran, A. V.

doi:10.1007/s12595-021-00414-1

Cited by 11 publications

(8 citation statements)

References 82 publications

(53 reference statements)

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“…Long‐term exposure to stress may cause endocrine disorders (Ariyasu et al., 2017; Keskin, 2019; Lyu et al., 2013). In studies on multiple species, endocrine‐disrupted species have significantly lower gut microbial diversity than healthy species (Burns et al., 2016; Mukherjee et al., 2021; Rizk & Thackray, 2021). Meanwhile, differences exist in the composition of gut microbiota community at different Daphnia instars, and these differences can be attributed to the physiological changes that occur during the development of Daphnia .…”

Section: Discussionmentioning

confidence: 99%

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Fish predation risk alters the microbiota of Daphnia in the process of inducing its life‐history defence traits

Liu,

Chen,

Akbar

et al. 2024

Freshwater Biology

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Host‐associated microbiota is an essential mediator of host adaptation to changeable environmental conditions. However, whether fish predation risk alters the gut microbiota composition of Daphnia while also of inducing Daphnia's life‐history defence traits remains unclear. Examination of the effect of predation risk on prey‐associated microbiota may help in improving our understanding of induced anti‐predation defence from a microbial perspective. In this study, Daphnia magna was used as the model organism to investigate the changes in the microbiota in the gut of Daphnia as well as in the whole Daphnia and the culture medium during D. magna life‐history anti‐predation defence. The relationship of these changes with the development stage was also assessed. The results showed that predation risk can simultaneously induce anti‐predation defences and reshape the associated microbiota composition of Daphnia. The gut microbiota of D. magna responded to both developmental stages and predation risk. The Shannon diversity of gut microbiota under predation risk decreased significantly with developmental stage. The abundance of dominant bacteria such as Burkholderiaceae and Flavobacteriaceae decreased under predation risk and was further reduced with developmental stage. Functional prediction results showed that the presence of predation risk mainly weakened overall microbial function, especially metabolic function, in the gut of D. magna. The weakening of microbial function was most obvious during sexual maturity. In addition, the number of unique operational taxonomic units in the whole Daphnia and dissected guts under predation risk was significantly higher than those in control. Based on the screening results, the Pantoea genus (Erwiniaceae family) can clearly distinguish dissected gut samples with or without predation risk. The present study provided more insights into the structural features and functional roles of the Daphnia microbiota and improved our understanding of induced anti‐predation defence from a microbial perspective. Furthermore, this study highlights the possible complex correlations that exist between induced defensive traits and altered microbiota, which warrants further investigation.

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Section: Discussionmentioning

confidence: 99%

“…In studies on multiple species, endocrine-disrupted species have significantly lower gut microbial diversity than healthy species (Burns et al, 2016;Mukherjee et al, 2021;Rizk & Thackray, 2021).…”

Section: Microbiota Diversity Of D Magna Under Predation Riskmentioning

confidence: 99%

Fish predation risk alters the microbiota of Daphnia in the process of inducing its life‐history defence traits

Liu,

Chen,

Akbar

et al. 2024

Freshwater Biology

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“…These chemicals are linked with developmental, reproductive, brain, and immune problems. In addition to pesticides, there are defined endocrine disruptor chemicals such as dioxins, bisphenol A (BPA), perchlorate, perfluoroalkyl and polyfluoroalkyl substances (PFAS), phthalates, and others [ 39 ].…”

Section: Discussionmentioning

confidence: 99%

Development of a Qualitative Test to Detect the Presence of Organophosphate Pesticides on Fruits and Vegetables

Luca

Mandrich

Manco

2023

Life

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Background: In recent decades, the use of pesticides in agriculture has increased at a fast pace, highlighting safety problems for the environment and human health, which in turn has made it necessary to develop new detection and decontamination systems for pesticides. Methods: A new qualitative test capable of detecting the presence of pesticides on fruits and vegetables by using thermostable enzymes was discovered, and the test was carried out on apples and aubergines. The contaminating pesticides were extracted from fruits with acetonitrile and analyzed with a biosensor system based on the thermostable esterase EST2 immobilized on a nitrocellulose filter. This enzyme is irreversibly inhibited mainly in the presence of organophosphates pesticides. Therefore, by observing esterase activity inhibition, we revealed the presence of residual pesticides on the fruits and vegetables. Results: By analyzing the rate of esterase activity inhibition, we predicted that residual pesticides are present on the surface of the fruits. When we cleaned the fruits by washing them in the presence of the phosphotriesterase SsoPox before the detection of the esterase activity on filters, we observed a full recovery of the activity for apples and 30% for aubergines, indicating that the enzymatic decontamination of organophosphates pesticides took place. Conclusions: The reported method permitted us to assess the pesticides present on the vegetables and their decontamination.

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“…As we known, long-term exposure to stress is likely to cause endocrine disorders [69][70][71]. In studies of multiple species, endocrine-disrupted species have signi cantly lower gut microbial diversity compared to healthy species [72][73][74][75]. Alternately, there are differences in the composition of the gut microbiota community at different Daphnia instars, and these differences may be due to the physiological changes that occur during development of Daphnia.…”

Section: Effects Of Predation Risk and Instar On D Magna Gut Microbiotamentioning

confidence: 99%

Induced anti-predation defense traits of Daphnia are associated with the gut microbiota composition

Liu¹,

Akbar²,

Ding³

et al. 2022

Preprint

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A growing number of studies on gnotobiotic animals have shown that the gut microbiota can promote host health by influencing life history traits. However, it is not clear whether the performance of host defense traits is related to the gut microbiota. In this study, we used Daphnia magna as a model organism to investigate the relationship between D. magna life history anti-predation defense traits and gut microbiota alterations under fish kairomone. Results showed that the Shannon diversity of D. magna gut microbiota under fish kairomone reduced significantly with the developmental stages. By analyzing the correlation between the induced anti-predation defense traits of D. magna and the relative abundance of bacteria, we found that the abundances of Comamonadaceae, Moraxellaceae, and Flavobacteriaceae were linearly correlated with the partial anti-predation defense traits of D. magna. Furthermore, the functional categories analysis showed that fish kairomone influenced the metabolic repertoire of D. magna gut microbiota. Our results highlighted that predation risk can simultaneously induce anti-predation defense and reshape gut microbiota composition of D. magna, and there was a complex correlation between the induced defensive traits and altered-microbiota. Such results revealed an important role of gut microbiota in the development of defensive traits of Daphnia.

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Endocrine Disruptors–‘Food’ for Thought

Cited by 11 publications

References 82 publications

Fish predation risk alters the microbiota of Daphnia in the process of inducing its life‐history defence traits

Fish predation risk alters the microbiota of Daphnia in the process of inducing its life‐history defence traits

Development of a Qualitative Test to Detect the Presence of Organophosphate Pesticides on Fruits and Vegetables

Induced anti-predation defense traits of Daphnia are associated with the gut microbiota composition

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