Biochemical defence of pro-oxidant plant allelochemicals by herbivorous insects

Ahmad, Sami

doi:10.1016/0305-1978(92)90040-k

Cited by 201 publications

(144 citation statements)

References 91 publications

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“…For example, peroxidation leads to disruption of membranes, oxidation of thiol groups, inhibition of thiol-containing enzymes, and DNA strand breaks (Ahmad 1992). Oxidation of mitochondrial glutathione jeopardizes mitochondrial integrity, causes oxidation of pyridine nucleotides, and ultimately impairs energy production.…”

Section: Compartmentalization and Redox Statementioning

confidence: 99%

“…Oxidation of mitochondrial glutathione jeopardizes mitochondrial integrity, causes oxidation of pyridine nucleotides, and ultimately impairs energy production. Peroxidation of membrane lipids causes cell dysfunction and ultimately cell death (Ahmad 1992). …”

Section: Compartmentalization and Redox Statementioning

confidence: 99%

“…Peroxidation also inhibits a large variety of enzymes as they are regulated by the oxidation-reduction state (Ahmad 1992;Chang and Swenson 1997;Ding et al 1996;Ghezzi 2005). Severe protein oxidation is costly to the cell since oxidatively-damaged proteins need to be degraded by specific proteases (Sweetlove et al 2009).…”

Section: Compartmentalization and Redox Statementioning

confidence: 99%

“…Plants produce pro-oxidant compounds as an allelochemical defense, exacerbating the endogenous oxidative stress of all aerobic organisms (Ahmad 1992). For instance, host-plant phenolics have a widely recognized detrimental impact on gypsy moth (Lymantria dispar) (Meyer and Montgomery 1987;Rossiter et al 1988;Roth et al 1994).…”

Section: Redox Homeostasismentioning

confidence: 99%

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Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

2012

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Background Oxidation-reduction and acid-base reactions are essential for the maintenance of all living organisms. However, redox potential (Eh) has received little attention in agronomy, unlike pH, which is regarded as a master variable. Agronomists are probably depriving themselves of a key factor in crop and soil science which could be a useful integrative tool. Scope This paper reviews the existing literature on Eh in various disciplines connected to agronomy, whether associated or not with pH, and then integrates this knowledge within a composite framework. Conclusions This transdisciplinary review offers evidence that Eh and pH are respectively and jointly major drivers of soil/plant/microorganism systems. Information on the roles of Eh and pH in plant and microorganism physiology and in soil genesis converges to form an operational framework for further studies of soil/plant/microorganism functioning. This framework is based on the hypothesis that plants physiologically function within a specific internal Eh-pH range and that, along with microorganisms, they alter Eh and pH in the rhizosphere to ensure homeostasis at the cell level. This new perspective could help in bridging several disciplines related to agronomy, and across micro and macro-scales. It should help to improve cropping systems design and management, in conventional, organic, and conservation agriculture.

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Section: Compartmentalization and Redox Statementioning

confidence: 99%

Section: Compartmentalization and Redox Statementioning

confidence: 99%

Section: Compartmentalization and Redox Statementioning

confidence: 99%

Section: Redox Homeostasismentioning

confidence: 99%

See 2 more Smart Citations

Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

2012

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“…In more polluted areas, a different type of prey would be eaten, with a predominance of less carotenoid‐rich food sources, for example, spiders instead of caterpillars (Geens et al., 2009; Koivula, Kanerva, Salminen, Nikinmaa, & Eeva, 2011). Many insect species can selectively accumulate more carotenoids such as lutein than others (Ahmad, 1992; Sillanpää et al., 2008). Some birds can also have this ability (McGraw et al., 2003).…”

Section: Resultsmentioning

confidence: 99%

Biological responses to environmental contamination. How can metal pollution impact signal honesty in avian species?

Pacyna

Ruman

Mazerski

et al. 2018

Ecology and Evolution

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Environmental pollution, for example with metals, can significantly affect the ecosystem balance leading to severe changes. Biologically active pigments are relevant for the appearance and condition of birds. Melanin and carotenoid particles are the most frequently deposited pigments in avian integument. They are responsible for the majority of colors of bird plumage. The phenotypic expression can be affected by metal contamination. It can be manifested as color bleaching or differences in the size of plumage badges. In this study, we performed a comprehensive review of related studies in order to estimate the underlying population effect of this potential dependency. The study is based on the review of the literature regarding several avian species. It was designed to identify an area where the effect of the exposure is still poorly known. The analysis was specifically conducted to investigate the correlation between trace element concentration and eumelanin deposition. Moreover, we searched for factors that could affect spectral properties of feathers with carotenoid‐based pigmentation. As a result, we found carotenoid‐based pigmentation to be of a good use in terms of visual condition assessment. Changes in melanin‐based pattern should be analyzed separately for eu‐ and pheomelanin as well as for a range of essential and toxic elements. Comprehensive studies on the subject are still scarce. Therefore, the issue requires further investigation.

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Peritrophic envelope as a functional antioxidant

Summers

Felton

1996

Arch. Insect Biochem. Physiol.

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Biochemical defence of pro-oxidant plant allelochemicals by herbivorous insects

Cited by 201 publications

References 91 publications

Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

Biological responses to environmental contamination. How can metal pollution impact signal honesty in avian species?

Peritrophic envelope as a functional antioxidant

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