Aphid-plant interactions: a review

Guerrieri, Emilio; Digilio, M. Cristina

doi:10.1080/17429140802567173

Cited by 154 publications

(116 citation statements)

References 68 publications

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“…In the case of virus-transmission, pathogenic symptoms add to those caused by aphid attack. There is no treatment for aphid-transmitted phytopathogenic viruses other than the prevention of aphid probing (Guerreri and Digilio 2008). Even aphid species that do not trigger visible diagnostic symptoms cause some physiological changes in their hosts.…”

Section: Introductionmentioning

confidence: 99%

“…Common symptoms of aphid infestation found in plants include gall-formation, chlorosis, necrosis, wilting, stunting, and malformation of new growth (Guerreri and Digilio 2008). Miles (1989) reported that the injection of aphid saliva can be extremely toxic to plants around the stylet tracks, causing chloroplast disruption or even alteration of the hormonal balance of the plant.…”

Section: Introductionmentioning

confidence: 99%

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Phytohormonal signaling in plant responses to aphid feeding

2011

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Aphid feeding induces various defense signaling mechanisms in plants. The recognition of feeding activities by plants occurs through the use of transmembrane pattern recognition receptors (PRRS) or, acting largely inside the cell, polymorphic nucleotide-binding leucine-rich-repeat (NB-LRR) protein products, encoded by most R genes. Activation may induce defensive reactions which are the result of highly coordinated sequential changes at the cellular level comprising, among other changes, the synthesis of signaling molecules. The ensuing plant responses are followed by the transmission of defense response signal cascades. Signals are mediated by bioactive endogenous molecules, i.e. phytohormones, such as jasmonic acid (JA), salicylic acid (SA), ethylene (ET), abscisic acid (ABA), gibberellic acid (GA) and free radicals such as hydrogen peroxide (H 2 O 2 ) and nitric oxide (NO) which independently provide direct chemical resistance. Plant-induced defenses are also regulated by a network of inter-connecting signaling pathways, in which JA, SA, and ET play dominant roles. Both synergistic and inhibitory aspects of the cross-talk among these pathways have been reported. This paper presents molecular mechanisms of plant response to aphid feeding, the precise activation of various endogenous bioactive molecules signaling in the response of many plant species and their participation in the regulation of numerous defense genes, which lead to a specific metabolic effect. Selected important points in signal transduction pathways were also discussed in studies on plant response to aphid feeding.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phytohormonal signaling in plant responses to aphid feeding

2011

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“…Aphids affect plant productivity by removal of photoassimilates and by altering source-sink patterns (Dixon, 1998;Blackman and Eastop, 2000;Goggin, 2007). In addition, some aphids are also vectors for plant viruses (Kennedy et al, 1962;Matthews, 1991;Guerrieri and Digilio, 2008). Although the aphid stylet penetrates the host tissue primarily intercellularly, occasionally it punctures cells, allowing the insect to sample cell contents (Pollard, 1973).…”

Section: Introductionmentioning

confidence: 99%

Root-Derived Oxylipins Promote Green Peach Aphid Performance on Arabidopsis Foliage

et al. 2012

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Oxylipins function as signaling molecules in plant growth and development and contribute to defense against stress. Here, we show that oxylipins also facilitate infestation of Arabidopsis thaliana shoots by the phloem sap-consuming green peach aphid (GPA; Myzus persicae), an agronomically important insect pest. GPAs had difficulty feeding from sieve elements and tapping into the xylem of lipoxygenase5 (lox5) mutant plants defective in LOX activity. These defects in GPA performance in the lox5 mutant were accompanied by reduced water content of GPAs and a smaller population size of GPAs in the mutant compared with the wild-type plant. LOX5 expression was rapidly induced in roots in response to infestation of shoots by GPAs. In parallel, levels of LOX5-derived oxylipins increased in roots and in petiole exudates of GPA-colonized plants. Application of 9-hydroxyoctadecadienoic acid (an oxylipin produced by the LOX5 enzyme) to roots restored water content and GPA population size in lox5 plants, thus confirming that a LOX5-derived oxylipin promotes infestation of the foliage by GPAs. Micrografting experiments demonstrated that GPA performance on foliage is influenced by the LOX5 genotype in roots, thus demonstrating the importance of root-derived oxylipins in colonization of aboveground organs by an insect.

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“…Plant volatiles released due to aphid damage also play an important role in host location by parasitoids (Guerrieri and Digilio 2008). Aphidius ervi specialises in fabaceous (leguminous) ecosystems on the pea aphid, A. pisum.…”

Section: Semiochemicals Released On Aphid Damagementioning

confidence: 99%

Production of semiochemical and allelobiotic agents as a consequence of aphid feeding

Dewhirst

Pickett

2009

Chemoecology

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Aphids have an extremely intimate relationship with their plant hosts. Although this might suggest that aphid infestation would be largely cryptic, there are a wide range of changes that can be detected behaviourally, chemically and also at the molecular genetic level. Colonisation by aphids can cause release of semiochemicals characteristic of the aphid species and besides reducing acceptability to incoming aphids; these can enable recruitment of specific parasitoids. Some semiochemicals involved in these processes can also influence the defence status of neighbouring intact plants through air or the rhizosphere. Electrophysiological and behavioural studies on the aphids, their parasitoids and other organisms facilitate the identification of compounds having direct effects on plant defence. New developments from work on semiochemicals such as (Z)-jasmone and 6-methyl-5-hepten-2-one, and allelobiotic agents such as 6-hydroxy-1,2,3,4-tetrahydro-b-carboline-3-carboxylic acid and 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one, as well as new work on these compounds and others as potential phytopheromones are discussed.

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Aphid-plant interactions: a review

Cited by 154 publications

References 68 publications

Phytohormonal signaling in plant responses to aphid feeding

Phytohormonal signaling in plant responses to aphid feeding

Root-Derived Oxylipins Promote Green Peach Aphid Performance on Arabidopsis Foliage

Production of semiochemical and allelobiotic agents as a consequence of aphid feeding

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