Tritrophic interactions in a wheat (Triticum aestivum), aphid (Rhopalosiphum padi) and parasitoid (Aphidius matricariae) system

2020 ◽  
Vol 130 ◽  
pp. 105076
Author(s):  
Khadijeh Jafari ◽  
Yaghoub Fathipour ◽  
Abdoolnabi Bagheri ◽  
Ali Asghar Talebi
Keyword(s):  
Triticum Aestivum ◽  
Tritrophic Interactions ◽  
Rhopalosiphum Padi ◽  
Aphidius Matricariae

scholarly journals Serodetection of viruses associated to barley yellow dwarf (BYD) on cereals in Algeria

2005 ◽  
Vol 80 (3) ◽  
pp. 169-177 ◽  
Author(s):  
H. Belkahla ◽  
H. Lapierre
Keyword(s):  
Triticum Aestivum ◽  
Monoclonal Antibodies ◽  
Avena Sativa ◽  
Rhopalosiphum Padi ◽  
Schizaphis Graminum ◽  
Yellow Dwarf ◽  
Crop Season ◽  
Serological Tests ◽  
Barley Yellow Dwarf ◽  
Das Elisa

Surveys on viruses associated with Barley Yellow Dwarf (BYD) and their vectors were carried out in Algerian cereal areas (Guelma, Constantine, Algiers, Sidi-belabes, Adrar) in 1997 and 1998. Rhopalosiphum padi was present in all zones of culture, whereas R. maidis, Sitobion avenae, S. fragariae and Schizaphis graminum had only local distributions. In most areas BYD-like symptoms, i.e. dwarfing and yellowing of barley (Hordeum vulgare), dwarfing and reddening of oat (Avena sativa) and wheat (Triticum aestivum), were observed. Serological tests were done on these crops using DAS-ELISA (RMV and SGV) or TAS-ELISA using monoclonal antibodies specifie to CYDV-RPV or using different variant specifie BYDV-PAV (CpA and CpB) and BYDV-MAV monoclonal antibodies. BYDV-PAV was prevalent and few plant samples carrying RMV, SGV, BYDV-MAV or CYDV-RPV were detected. The relative frequencies of BYDV-PAV CpA and CpB serotypes were variable depending on the area and the crop season. The range of symptoms induced on barley by both Algerian BYDV-PAV CpB and BYDV-PAV CpA serotypes was mild to severe. Twenty-one BYDV-MAV isolates were compared using monoclonal antibodies, which distinguish two serotypes of this virus. Only one serotype was detected. This same serotype is also the most prevalent in Europe.

Resistance of Select Winter Wheat (Triticum aestivum) Cultivars to Rhopalosiphum padi (Hemiptera: Aphididae)

2017 ◽  
Vol 110 (4) ◽  
pp. 1886-1889 ◽  
Author(s):  
John Girvin ◽  
R. Jeff Whitworth ◽  
Lina Maria Aguirre Rojas ◽  
C. Michael Smith
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Rhopalosiphum Padi

scholarly journals Effect of Plant Essential Oils against Rophalosiphum padi on Wheat and Barley

2017 ◽  
Vol 12 (9) ◽  
pp. 1934578X1701200
Author(s):  
Daniela Grul'ová ◽  
Silvia Mudrončeková ◽  
Valtcho D. Zheljazkov ◽  
Ivan Šalamon ◽  
Silvia I. Rondon
Keyword(s):  
Triticum Aestivum ◽  
Hordeum Vulgare ◽  
Essential Oils ◽  
Untreated Control ◽  
Rhopalosiphum Padi ◽  
Triticum Aestivum L ◽  
Thymus Vulgaris ◽  
Hordeum Vulgare L ◽  
Plant Essential Oils ◽  
Hyssopus Officinalis

The aim of the present study was to evaluate the effect of six EOs against Rhopalosiphum padi L. (Homoptera: Aphididae). This aphid is one of the most important cereal pests worldwide. EOs used in this study were from cumin ( Cuminum cyminum L.; Apiaceae), hyssop ( Hyssopus officinalis L.; Lamiaceae), costmary ( Tanacetum balsamita L. syn. Chrysanthemum balsamita L. Baill; Asteraceae), lovage ( Levisticum officinale W.D.J. Koch; Apiaceae), lavander ( Lavandula angustifolia Mill; Lamiaceae) and thyme ( Thymus vulgaris L.; Lamiaceae). Cultivar ORCF-10, a soft white winter wheat ( Triticum aestivum L.) cultivar and barley ( Hordeum vulgare L.) cv. ‘Alba’ were selected for the bioassays. Each EO was diluted with acetone (w/v) at different concentrations ranging from 0.1 % to 1.0 %. Number of R. padi landing on treated or untreated leaves was counted 24 h after the initial aphid transfer. In general, the repellency effect increased as the concentration of EOs increased regardless of treatments with the exception of lovage. Regardless of the substrate and treatment, lower numbers of aphids were observed on treated leaves at higher concentrations compared to the untreated control stressing the repellency effect. This study demonstrated that the EOs of cumin, hyssop, costmary, lavender, and thyme may have potential for aphids control.

Plant resistance to the Russian wheat aphid: effects on a nontarget aphid and the role of induction

2004 ◽  
Vol 136 (1) ◽  
pp. 129-137 ◽  
Author(s):  
Frank J. Messina ◽  
Ashley J. Bloxham
Keyword(s):  
Triticum Aestivum ◽  
Plant Resistance ◽  
Rhopalosiphum Padi ◽  
Russian Wheat Aphid ◽  
Diuraphis Noxia ◽  
Resistant Lines ◽  
Aphid Feeding ◽  
Species Performance ◽  
Different Sources

AbstractSeveral resistant lines of wheat, Triticum aestivum (L.) (Poaceae), have been developed to control populations of the Russian wheat aphid, Diuraphis noxia (Mordvilko) (Hemiptera: Aphididae). We examined the potential effects of D. noxia resistant lines on another aphid, the bird cherry-oat aphid (Rhopalosiphum padi (L.) (Hemiptera: Aphididae)), which commonly co-occurs with D. noxia. Because one type of resistance (mediated by the Dn1 gene) is purported to be induced rather than constitutive, we also determined the degree to which the suitability of resistant and susceptible plants is modified by previous infestation. Although resistant lines were derived from five different sources, we did not detect any differences in the population growth of R. padi on resistant and near-isogenic susceptible plants. The performance of D. noxia was reduced as expected on resistant plants but was unaffected by whether or not plants had been previously infested. In contrast, the performance of R. padi was reduced on plants that had been previously infested but was unaffected by whether plants were resistant or susceptible to D. noxia. Because neither species' performance was especially low on previously infested, resistant plants, there was no evidence that prior aphid feeding induces a higher level of resistance.

scholarly journals Identification of the Wheat Curl Mite as the Vector of Triticum mosaic virus

Plant Disease ◽  
2009 ◽  
Vol 93 (1) ◽  
pp. 25-29 ◽  
Author(s):  
Dallas L. Seifers ◽  
T. J. Martin ◽  
Tom L. Harvey ◽  
John P. Fellers ◽  
J. P. Michaud
Keyword(s):  
Triticum Aestivum ◽  
Mosaic Virus ◽  
Natural Infection ◽  
Rhopalosiphum Padi ◽  
Field Analysis ◽  
Enzyme Linked Immunosorbent Assay ◽  
Infection Rates ◽  
Wheat Curl Mite ◽  
Aceria Tosichella ◽  
Different Sources

Triticum mosaic virus (TriMV) is a newly discovered virus found infecting wheat (Triticum aestivum) in Kansas. This study was conducted to determine if the wheat curl mite (WCM, Aceria tosichella) and the bird cherry oat aphid (Rhopalosiphum padi) could transmit TriMV. Using different sources of WCM and two different isolates of TriMV, we were able to show the WCM is the vector of TriMV. Field analysis by enzyme-linked immunosorbent assay (ELISA) demonstrated natural infection patterns of wheat infected with TriMV, Wheat streak mosaic virus (WSMV), or both TriMV and WSMV, putatively infected by viruliferous WCM from a volunteer source growing adjacent to the wheat. Moreover, by single WCM transfers using WCM obtained from different wheat plants naturally infected with TriMV and WSMV and naturally infested with WCM, we showed that these WCM also transmitted TriMV only to wheat or transmitted both TriMV and WSMV to wheat. The infection rates of wheat with TriMV only using WCM transmission was low in both laboratory and field analyses. However, field analyses by ELISA showed that levels of infection of wheat by both TriMV and WSMV were high. No transmission of TriMV to wheat by R. padi occurred in our studies.

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