Aphid-host plant interaction

Sadek, Reham Z.; Elbanna, Shereen M.; Semida, Fayez

doi:10.4236/ojas.2013.32a003

Cited by 9 publications

(6 citation statements)

References 72 publications

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“…The correlation and straight linear regression between reduction in plant dry weight (Figures 3(B), 4(B)) and increase in aphid population established that growing aphid population consumed excessive quantity of photosynthates and resulting carbon deficiency suppressed cell division. Walling (2000) reported that phloem sap herbivory adversely affected the plant productivity (Bak et al 2013;Sadek et al 2013) The presumption (as above) that phloem sap directly consumed by aphids caused water stress in the plant tissues is further supported from statistically analysed relationship between accumulation of proline content (inversely proportional) (Figure 2(E)) and aphid population in varying cultivars. The proline in water-stressed conditions acts as water-stress adjuster in plants (Khattab 2007).…”

Section: Discussionmentioning

confidence: 78%

“…On aphid attacks, the selected cultivars suffered from abundant availability of photosynthates for cell division and adequate water required for the cell turgidity during cell expansion. The correlation coefficients and linear regression between percentage reduction in fresh plant mass (Figures 3(A), 4(A)) and percentage increase in aphid population (Figure 1(A)) explicitly explains the loss of water from plant tissues via phloem sap consuming aphids led to water stress in plant tissues (Khattab 2007;Sadek et al 2013). The correlation and straight linear regression between reduction in plant dry weight (Figures 3(B), 4(B)) and increase in aphid population established that growing aphid population consumed excessive quantity of photosynthates and resulting carbon deficiency suppressed cell division.…”

Section: Discussionmentioning

confidence: 99%

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Assessment of aphid infestation levels in some cultivars of mustard with varying defensive traits

Rehman

Khan

Anis

2013

Archives Of Phytopathology And Plant Protection

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Phloem-sucking mustard aphid (Lipaphis erysimi) is a major pest of mustard (Brassica juncea). Pot experiment with randomised block design was conducted with five replicates of each of five cultivars (Alankar, Pusa Jai Kisan, Rohini, Sakha and Varuna) of the mustard for their degree of inherited resistance and/or susceptibility to the mustard aphid infestation. Forty-five days old (from date of sowing) pot-grown plants of all selected cultivars of mustard were exposed to 40 adult mustard aphids. The aphid-infested plants were kept in specially designed net houses of fine mesh to protect from predators and/or migration of aphids from one to other host. The aphid population and some growth attributes of the selected cultivars of mustard were recorded 15 and 30 days later (i.e. at 60 and 75 days after sowing). The aphid population multiplied more rapidly on Rohini than other four cultivars. Cultivar Alankar resisted most and supported to least number of aphid's off-springs. Statistically analysed growth attributes (fresh plant mass, dry plant mass, protein, chlorophyll and carotenoid contents), resistance attribute (proline) and population demography of aphids revealed that some inherited characteristics of avoidance, antibiosis and repellence to herbivores helped cultivar Alankar to excel despite equal degree of aphid attacks as on other cultivars. Cultivar Rohini for the want of such resisting factors remained vulnerable to aphid herbivory. These two cultivars (Alankar and Rohini) form good research material for comparative studies on plant defences to herbivory and a tri-trophic resistance through volatile chemical signalling.

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Section: Discussionmentioning

confidence: 78%

Section: Discussionmentioning

confidence: 99%

Assessment of aphid infestation levels in some cultivars of mustard with varying defensive traits

Rehman

Khan

Anis

2013

Archives Of Phytopathology And Plant Protection

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“…Generalist aphids can cope with induced plant resistance (Sadek, Elbanna & Semida, ) resulting in facilitated settling and increased population growth (also detected in My. persicae ; Vincent, Giordanengo & Cherqui, ; Sadek et al, ). Genetic analyses using five polymorphic microsatellite markers on the tansy aphid, Me.…”

Section: Categories Of Specialismsmentioning

confidence: 91%

Aphid specialism as an example of ecological–evolutionary divergence

Loxdale

Balog

2017

Biological Reviews

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Debate still continues around the definition of generalism and specialism in nature. To some, generalism is equated solely with polyphagy, but this cannot be readily divorced from other essential biological factors, such as morphology, behaviour, genetics, biochemistry, chemistry and ecology, including chemical ecology. Viewed in this light, and accepting that when living organisms evolve to fill new ecological-evolutionary niches, this is the primal act of specialisation, then perhaps all living organisms are specialist in the broadest sense. To illustrate the levels of specialisation that may be found in a group of animals, we here provide an overview of those displayed by a subfamily of hemipteran insects, the Aphididae, which comprises some 1600 species/subspecies in Europe alone and whose members are specialised in a variety of lifestyle traits. These include life cycle, host adaptation, dispersal and migration, associations with bacterial symbionts (in turn related to host adaptation and resistance to hymenopterous wasp parasitoids), mutualisms with ants, and resistance to insecticides. As with polyphagy, these traits cannot easily be separated from one another, but rather, are interconnected, often highly so, which makes the Aphididae a fascinating animal group to study, providing an informative, perhaps unique, model to illustrate the complexities of defining generalism versus specialism.

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“…These anti-oxidant enzymes are even altered in cluster bean plant under zinc stress (Vijayarengan, 2013). Through literature it is evident that aphid infestation enhances the biochemical and defense enzymes of different host plants (Sadek et al, 2013). The increase in SOD and POD explains the enhanced ROS due to herbivory.…”

Section: Discussionmentioning

confidence: 99%

Role of Physical and Biochemical Parameters of Different Cluster Bean Varieties on the Guar Gum Content and Aphid Infestation

Pratyusha¹,

Rani²

2016

Int. J. Curr. Res. Biosci. Plant Biol.

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A b s t r a c t A r t i c l e I n f oCluster bean, Cyamopsis tetragonoloba L. is one of the most important and potential vegetable cum industrial crop grown for its tender pods as vegetable and for endospermic gum (30-35%). The present study was conducted in a net house using pot experiments on seven different cluster bean varietal plants namely HG365, JJ1, JG2, GL1031, REC1025, RGC963, and RGC936. In these guar plants the physical, biochemical and enzymatic parameters were studied in correlation to the guar gum content and Aphis craccivora K. infestation. The physical parameters like germination percentage, seedling vigour and vigour index were superior in RGC963, HG365, JJ1, REC1025 plant varieties resulting in less aphid infestation. In addition, the gum content, total soluble sugars and total protein content were high in guar varieties of RGC963, HG365, JJ1, REC1025 followed by JG2, GL1031, and RGC936 along with a reduced content of amino acids. Whereas, enhanced levels of primary metabolites and antioxidant enzymes such as peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT) were observed in the aphid infested cluster bean plants in comparison to normal, uninfested plants in all the varieties. This study reveals the possible role of enhanced plant biochemicals like carbohydrates and phenols towards higher yield of guar gum and lower aphid infestation respectively. In future the present research can lead us to the development of cluster bean varietal plants with higher gum yield potential for desired resistance towards biotic stresses.

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Aphid-host plant interaction

Cited by 9 publications

References 72 publications

Assessment of aphid infestation levels in some cultivars of mustard with varying defensive traits

Assessment of aphid infestation levels in some cultivars of mustard with varying defensive traits

Aphid specialism as an example of ecological–evolutionary divergence

Role of Physical and Biochemical Parameters of Different Cluster Bean Varieties on the Guar Gum Content and Aphid Infestation

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