Plant Cyanogenic-Derived Metabolites and Herbivore Counter-Defences

Plants, Journal Year: 2024, Volume and Issue: 13(9), P. 1239 - 1239

Published: April 29, 2024

The release of cyanide from cyanogenic precursors is the central core plant defences based on cyanogenesis process. Although formed as a coproduct some metabolic routes, its production mostly due to degradation cyanohydrins originating glycosides in plants and 4-OH-ICN route Brassicaceae. Cyanohydrins are then hydrolysed reversible reaction generating cyanide, being both, toxic compounds with potential defensive properties against pests pathogens. Based cyanogenic-derived molecules response damage caused by herbivore infestation, this review, we compile actual knowledge events plant–pest context. Besides potential, mode action, targets combat phytophagous insects acari, special attention has been paid arthropod responses strategies overcome impact cyanogenesis. Physiological behavioural adaptations, well detoxification β-cyanoalanine synthases, rhodaneses, cyanases common ways arthropods produced plants. Much experimental work needed further understand complexities specificities defence–counter-defence system be applied breeding programs.

Language: Английский

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Regulation of mammalian cellular metabolism by endogenous cyanide production

Nature Metabolism, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

Abstract Small, gaseous molecules such as nitric oxide, carbon monoxide and hydrogen sulfide are produced signalling in mammalian cells. Here, we show that low concentrations of cyanide generated endogenously various tissues We detect several cellular compartments human cells the blood mice. Cyanide production is stimulated by glycine, occurs at pH lysosomes requires peroxidase activity. When a specific rate, exerts stimulatory effects on mitochondrial bioenergetics, cell metabolism proliferation, but impairs bioenergetics high concentrations. can modify cysteine residues via protein S -cyanylation, which detectable basally mice, increases response to glycine. Low-dose supplementation exhibits cytoprotective hypoxia reoxygenation models vitro vivo. Conversely, pathologically elevated nonketotic hyperglycinaemia detrimental Our findings indicate should be considered part same group endogenous regulatory gasotransmitters sulfide.

Language: Английский

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Old poisons, new signaling molecules: the case of hydrogen cyanide

Journal of Experimental Botany, Journal Year: 2023, Volume and Issue: 74(19), P. 6040 - 6051

Published: Aug. 16, 2023

The high phenotypic plasticity developed by plants includes rapid responses and adaptations to aggressive or changing environments. To achieve this, they evolved extremely efficient mechanisms of signaling mediated a wide range molecules, including small signal molecules. Among them, hydrogen cyanide (HCN) has been largely ignored due its toxic characteristics. However, not only is it present in living organisms, but shown that serves several functions all kingdoms life. Research using model changed the traditional point view, demonstrated HCN plays positive role plant response pathogens independently toxicity. Indeed, induces aimed at protecting from pathogen attack, provided either exogenously (in vitro some cyanogenic bacteria species rhizosphere) endogenously reactions involving ethylene, camalexin, other cyanide-containing compounds). contribution different function, new post-translational modification cysteines proteins, namely S-cyanylation, discussed here. This work opens up an expanding 'HCN field' research related organisms.

Language: Английский

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Resistance of ten Indonesian cassava cultivars to the cassava lacebug, Vatiga illudens (Drake) (Hemiptera: Tingidae), a newly invasive exotic species in Asia

Crop Protection, Journal Year: 2025, Volume and Issue: unknown, P. 107208 - 107208

Published: March 1, 2025

Language: Английский

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Exploring hydroxynitrile lyase activity in seed sources and characterisation of a novel hydroxynitrile lyase from Pyrus communis (Pear)

South African Journal of Botany, Journal Year: 2025, Volume and Issue: 181, P. 14 - 23

Published: April 11, 2025

Language: Английский

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Chemical, ecotoxicological characteristics, environmental fate, and treatment methods applied to cyanide-containing wastewater

npj Clean Water, Journal Year: 2024, Volume and Issue: 7(1)

Published: Oct. 5, 2024

The main chemical, ecotoxicological, and environmental fate characteristics of cyanide, along with its treatment methods for cyanide-contaminated wastewater, were thoroughly examined. A global biogeochemical cycle cyanide is proposed, covering the key physicochemical processes occurring in aqueous, soil, atmospheric environments. principles, advantages, disadvantages various methods—including physicochemical, electrochemical, photochemical, biological approaches—are evaluated. Finally, feasibility reusing waste explored.

Language: Английский

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Unraveling the Coevolutionary Arms Race: Insights into the Dynamic Interplay of Plants, Insects and Associated Organisms

Published: Jan. 1, 2024

Insect–plant interactions are complex and dynamic relationships that have evolved over millions of years. Plants developed various adaptations to deter insect herbivores, including physical, chemical, induced defences. In response, insects detoxification mechanisms, behavioural adaptations, physiological overcome these This coevolutionary arms race has shaped the between plants insects, leading a diverse array strategies counter-strategies. Additionally, other associated organisms such as endosymbionts rhizosphere microbes been shown play critical role in interactions. Endosymbionts can alter nutritional quality plant tissue confer resistance environmental stressors, while influence growth nutrient uptake. Understanding insect–plant important implications for protection management. By leveraging relationships, we develop sustainable eco-friendly approaches crop pest

Language: Английский

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The effect of white grub (Maladera Verticalis) larvae feeding on rhizosphere microbial characterization of aerobic rice (Oryza sativa L.) in Puer City, Yunnan Province, China

BMC Microbiology, Journal Year: 2024, Volume and Issue: 24(1)

Published: April 15, 2024

Abstract Background Rhizosphere microorganisms are vital in plants’ growth and development these beneficial microbes recruited to the root-zone soil when experiencing various environmental stresses. However, effect of white grub ( Maladera verticalis ) larvae feeding on structure function rhizosphere microbial communities aerobic rice Oryza sativa L.) is unclear. Results In this study, we compared physicochemical properties, enzyme activities, using 18 samples under healthy M. larvae-feeding soils at Yunnan China. 16 S rRNA ITS amplicons were sequenced Illumina high throughput sequencing. can influence properties which also change communities. The had distinct genus signatures, such as possible_genus_04 Knoellia genera norank_f__SC − I−84 norank_f__Roseiflexaceae soils. pathway metabolism terpenoids polyketides carbohydrate bacteria significantly decreased after feeding. Fungal parasite–wood saprotroph fungal parasites feeding, plant pathogen–wood animal pathogen–undefined increased Additionally, relative abundance Bradyrhizobium Talaromyces gradually with elevation density. Bacterial correlated respectively. Conclusions Based results provide new insight for understanding adaptation via regulating environment, would allow us facilitate translation more effective measures.

Language: Английский

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Spider mite infestation triggers coordinated hormonal trade‐offs enabling plant survival with a fitness cost

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(4)

Published: July 1, 2024

Abstract Tetranychus urticae is an important pest that causes severe damage to a wide variety of plants and crops, leading substantial productivity loss. Previous research has been focused on plant defence response T. improve resistance. However, growth, development reproduction throughout the infestation process have not previously studied. Through physiological, biochemical, transcriptomic hormonomic evaluation, we uncover molecular mechanisms directing defence‐growth trade‐off established in Arabidopsis upon infestation. Upon mite attack, suffer adaptation characterized by temporal separation between growth responses. Jasmonic salicylic acids regulate main responses combination with auxin abscisic acid. while reduction both signalling gibberellin, cytokinin brassinosteroid biosynthesis lead initial arrest, increasing levels hormones at later stages enables restart. These alterations developmental delay impacts seed production longevity. We demonstrate coordinated trade‐offs determine survival, revealing long‐lasting effect negatively impacting viability. This study provides additional tools design management strategies resistance without penalty fitness.

Language: Английский

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Contrasting defence mechanisms against spider mite infestation in cyanogenic and non-cyanogenic legumes

Plant Science, Journal Year: 2024, Volume and Issue: 345, P. 112118 - 112118

Published: May 20, 2024

Understanding the complex interactions between plants and herbivores is essential for improving crop resistance. Aiming to expand role of cyanogenesis in plant defence, we investigated response cyanogenic Phaseolus lunatus (lima bean) non-cyanogenic vulgaris (common Tetranychus urticae (spider mite) infestation. Despite mite infesting both legumes, leaf damage infringed by this feeder was reduced lima bean. Comparative transcriptome analyses revealed that species exhibited substantial metabolic transcriptional changes upon infestation, although alterations P. were significantly more pronounced. Specific differences amino acid homeostasis key genes associated with pathway observed these species, as well upregulation mandelonitrile lyase gene (PlMNL1) following T. feeding. Concomitantly, PIMNL1 activity increased. Lima bean also displayed an induction β-cyanoalanine synthase (PlCYSC1), a enzyme cyanide detoxification, suggesting internal regulatory mechanism manage toxicity their defence responses. These findings contribute our understanding legume-herbivore underscore potential elaboration specific defensive responses, even within same genus, which may reflect distinctive evolutionary adaptations or varying capabilities species.

Language: Английский

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