Author: Claude Charles BernierPublisher:
ISBN:
Category :
Languages : en
Pages : 102
Book Description
Mechanical Transmission of Aphid-borne Raspberry Viruses to Herbaceous Hosts
Author: Claude Charles BernierPublisher:
ISBN:
Category :
Languages : en
Pages : 102
Book Description
Mechanical Transmission of Aphid-borne Raspberry Viruses to Herbaceous Hosts
Author: Claude Charles BernierPublisher:
ISBN:
Category :
Languages : en
Pages : 102
Book Description
Raspberry Viruses Manipulate Plant-aphid Interactions
Author: Lindsay Sara McmenemyPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Plants come under attack by a variety of organisms, including insects and pathogenic microorganisms such as viruses. Plant viruses can interact indirectly with their vectors by inducing changes to plant chemistry which may alter its attractiveness as a host for herbivore vectors. Using red raspberry as a study system, this study aimed to investigate the host plant mediated interactions occurring between the large raspberry aphid, Amphorophora idaei, and two of the viruses that it transmits, Black raspberry necrosis virus (BRNV) and Raspberry leaf mottle virus (RLMV). In whole plant bioassays, BRNV and RLMV-infected plants were shown to be initially more attractive to A. idaei and aphids remained on the initially selected host plant for a period of approximately 30 minutes. In addition, A. idaei took three days longer to reach reproductive maturity compared with those feeding on non-infected plants, suggesting a virally-induced manipulation of aphid behaviour whereby a deceptive attraction of the vector to a host plant found to be nutritionally poor, presumably acts to promote virus transmission. Investigations of the underlying plant chemistry revealed that raspberry viruses may be capable of facilitating aphid feeding by reducing leaf phenolic concentration when aphids are feeding and that infection with BRNV and RLMV resulted in significantly elevated levels of carbon and free amino acids in the leaves. While increased concentrations of amino acids might be expected to promote aphid performance, the amino acid composition was dominated by glutamate (77% of total content of infected plants), a previously suggested indicator of reduced host-plant suitability for aphids. Volatile entrainments from virus-infected plants showed elevated levels of the green leaf volatile (Z)-3-hexenyl acetate. Bioassays subsequently revealed that this compound acted as an aphid attractant at a concentration of 50 ng ml-1 but that aphid behaviour was unaffected by lower concentrations. The combined utilisation of PCR diagnostics developed from newly sequenced viral genomes and the implementation of a non-invasive, targeted method of sampling plant headspace volatiles enabled this study to provide novel insights into the nature of host plant mediated interactions between aphids and the viral pathogens that they transmit.
Symposium on Small Fruit Virus Diseases, Vancouver, British Columbia 16-18 June 1982
Author: Richard Stace-SmithPublisher:
ISBN:
Category : Berries
Languages : en
Pages : 108
Book Description
Pesticides Documentation Bulletin
Author: The Mechanical Transmission of Strawberry Viruses to Other Herbaceous Plants
Author: Bernardo San Jose CastilloPublisher:
ISBN:
Category : Strawberries
Languages : en
Pages : 134
Book Description
Diseases of Raspberries and Erect and Trailing Blackberries
Author: Richard H. ConversePublisher:
ISBN:
Category : Blackberries
Languages : en
Pages : 118
Book Description
New Zealand Journal of Agricultural Research
Author: Virus Diseases of Small Fruits
Author: Comprehensive Dissertation Index
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1244
Book Description