Plant secondary metabolites and the interactions between plants and other organisms

Hartley, Susan; Eschen, René; Horwood, Julia; Robinson, Lynne A.; Hill, Elizabeth M.

doi:10.1017/cbo9780511675751.012

Cited by 6 publications

(5 citation statements)

References 68 publications

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“…Conceivably, changes in the shoot metabolome may have been too small or inconsistent to have been detected, but this seems unlikely given that our UPLC-QTOFMS methodology clearly discriminated between the metabolomes of old and new leaves (Fig. 1 b), and that we have used the same technique to successfully detect differences in the metabolomes of above-ground tissues in ragwort previously (Hartley et al 2012 ). Previous studies have demonstrated that AMF-mediated changes occur in above-ground plant tissues, with effects on gene expression (Taylor and Harrier 2003 ) and on herbivore performance (Koricheva et al 2009 ), but changes in foliar secondary metabolites in response to colonisation seem more inconsistent.…”

Section: Discussionmentioning

confidence: 98%

Arbuscular Mycorrhizal Fungi and Plant Chemical Defence: Effects of Colonisation on Aboveground and Belowground Metabolomes

et al. 2018

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Arbuscular mycorrhizal fungal (AMF) colonisation of plant roots is one of the most ancient and widespread interactions in ecology, yet the systemic consequences for plant secondary chemistry remain unclear. We performed the first metabolomic investigation into the impact of AMF colonisation by Rhizophagus irregularis on the chemical defences, spanning above- and below-ground tissues, in its host-plant ragwort (Senecio jacobaea). We used a non-targeted metabolomics approach to profile, and where possible identify, compounds induced by AMF colonisation in both roots and shoots. Metabolomics analyses revealed that 33 compounds were significantly increased in the root tissue of AMF colonised plants, including seven blumenols, plant-derived compounds known to be associated with AMF colonisation. One of these was a novel structure conjugated with a malonyl-sugar and uronic acid moiety, hitherto an unreported combination. Such structural modifications of blumenols could be significant for their previously reported functional roles associated with the establishment and maintenance of AM colonisation. Pyrrolizidine alkaloids (PAs), key anti-herbivore defence compounds in ragwort, dominated the metabolomic profiles of root and shoot extracts. Analyses of the metabolomic profiles revealed an increase in four PAs in roots (but not shoots) of AMF colonised plants, with the potential to protect colonised plants from below-ground organisms.Electronic supplementary materialThe online version of this article (10.1007/s10886-017-0921-1) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 98%

Arbuscular Mycorrhizal Fungi and Plant Chemical Defence: Effects of Colonisation on Aboveground and Belowground Metabolomes

et al. 2018

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“…more abundant in J. vulgaris flower heads than in leaves, such as senecionine, integerrimine, seneciphyline and their N-oxides. Although the concentrations of senecionine, integerrimine and seneciphyline are lower when compared to erucifoline or jacobine, their presence in the flower heads suggests that these PAs have a role in flower protection (Hartley et al, 2012). Senecionine and seneciphylline are deterrents of generalist insect herbivores (Dreyer et al, 1985;Macel et al, 2005) and integerrimine is an effective fungal inhibitor (Hol and Van Veen, 2002).…”

Section: Discussionmentioning

confidence: 99%

Chemical variation in Jacobaea vulgaris is influenced by the interaction of season and vegetation successional stage

et al. 2014

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“…Simultaneous identification and quantification of all the metabolites of an organism produces a complete profile of the physiological behaviour of these organisms in response to environmental changes (Hartley et al . ). This is a significant advance; instead of crude total quantification of a group of PSM, key mechanisms or key molecules underlying a process or interactions can be elucidated even if the compounds are not known initially.…”

Section: Challenges and Perspectivesmentioning

confidence: 97%

Plant secondary metabolites: a key driver of litter decomposition and soil nutrient cycling

Chomel

Guittonny-Larchevêque

et al. 2016

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International audienceA broad and diversified group of compounds, secondary metabolites, are known to govern species interactions in ecosystems. Recent studies have shown that secondary metabolites can also play a major role in ecosystem processes, such as plant succession or in the process of litter decomposition, by governing the interplay between plant matter and soil organisms. We reviewed the ecological role of the three main classes of secondary metabolites and the methodological challenges and novel avenues for their study. We highlight emerging general patterns of the impacts of secondary metabolites on decomposer communities and litter decomposition and argue for the consideration of secondary compounds as key drivers of soil functioning and ecosystem functioning.Synthesis. Gaining a greater understanding of plant-soil organisms relationships and underlying mechanisms, including the role of secondary metabolites, could improve our ability to understand ecosystem processes. We outline some promising directions for future research that would stimulate studies aiming to understand the interactions of secondary metabolites across a range of spatio-temporal scales. Detailed mechanistic knowledge could help us to develop models for the process of litter decomposition and nutrient cycling in ecosystems and help us to predict future impacts of global changes on ecosystem functioning

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Plant secondary metabolites and the interactions between plants and other organisms

Cited by 6 publications

References 68 publications

Arbuscular Mycorrhizal Fungi and Plant Chemical Defence: Effects of Colonisation on Aboveground and Belowground Metabolomes

Arbuscular Mycorrhizal Fungi and Plant Chemical Defence: Effects of Colonisation on Aboveground and Belowground Metabolomes

Chemical variation in Jacobaea vulgaris is influenced by the interaction of season and vegetation successional stage

Plant secondary metabolites: a key driver of litter decomposition and soil nutrient cycling

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