Asymmetrical Distribution of Barley Yellow Dwarf Virus PAV Variants Between Host Plant Species

A large epidemiological study of the genetic variation of barley yellow dwarf virus (BYDV) serotype PAV involving different host plant species was conducted. French BYDV PAV isolates were collected from barley and ryegrass, and their capsid protein gene sequences characterized using restriction fragment length polymorphism, single-strand conformation polymorphism, and sequence analyses. The data show that BYDV PAV isolates from five different continents are separated into two distinct groups named cpA and cpB, which are distributed irrespective of geographical location. Amino acid identity of the capsid proteins ranged from 93 to 99.5% in group cpA and from 95 to 99.5% in group cpB, while this value was only from 82 to 88% between the groups. Moreover, isolates from each group were found preferentially (up to 98%) in one of the two plant species examined. These results show that host plant species play a role in isolate selection and maintenance and that they contribute to the genetic diversity of BYDV PAV.

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HOST PLANT PREFERENCE OF CEREAL APHIDS IN THE FIELD IN RELATION TO THE ECOLOGY OF BARLEY YELLOW DWARF VIRUS

Entomologia Experimentalis et Applicata ◽

10.1111/j.1570-7458.1961.tb00484.x ◽

1961 ◽

Vol 4 (1) ◽

pp. 62-72 ◽

Cited By ~ 12

Author(s):

G. B. ORLOB

Keyword(s):

Host Plant ◽

Barley Yellow Dwarf Virus ◽

Yellow Dwarf ◽

Dwarf Virus ◽

Cereal Aphids ◽

Host Plant Preference ◽

Barley Yellow Dwarf ◽

Yellow Dwarf Virus

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Barley Yellow Dwarf Virus Multiplication and Host Plant Tolerance in Durum Wheat

Journal of Phytopathology ◽

10.1111/j.1439-0434.1993.tb01437.x ◽

1993 ◽

Vol 139 (4) ◽

pp. 357-366 ◽

Cited By ~ 3

Author(s):

F. Cheour ◽

A. Comeau ◽

A. Asselin

Keyword(s):

Durum Wheat ◽

Host Plant ◽

Barley Yellow Dwarf Virus ◽

Virus Multiplication ◽

Yellow Dwarf ◽

Dwarf Virus ◽

Plant Tolerance ◽

Barley Yellow Dwarf ◽

Yellow Dwarf Virus

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Infection of susceptible/tolerant barley genotypes with Barley yellow dwarf virus alters the host plant preference of Rhopalosiphum padi clones depending upon their ability to transmit BYDV

Journal of Pest Science ◽

10.1007/s10340-021-01367-2 ◽

2021 ◽

Author(s):

Maria Kern ◽

Torsten Meiners ◽

Edgar Schliephake ◽

Antje Habekuss ◽

Frank Ordon ◽

...

Keyword(s):

Host Plant ◽

Barley Yellow Dwarf Virus ◽

Rhopalosiphum Padi ◽

Transmission Efficiency ◽

Yellow Dwarf ◽

Dwarf Virus ◽

Host Plant Preference ◽

Barley Yellow Dwarf ◽

Aphid Clone ◽

Yellow Dwarf Virus

AbstractDiscovering mechanisms of plant–virus–vector interactions is fundamental to understand their ecology and evolution and to apply this knowledge in plant protection. To study the influence of varying Barley yellow dwarf virus (BYDV) transmission efficiencies on host plant preference of Rhopalosiphum padi (L.) clones, we performed host choice experiments with two barley cultivars (BYDV susceptible cv. ‘Rubina’ and BYDV tolerant cv. ‘Vixen’) including healthy and virus-infected plants. For the susceptible barley cultivar ‘Rubina’, aphid clone R07 (high transmission efficiency) preferred BYDV-infected over healthy host plants after 24 h, while clones D10 (medium transmission efficiency) and R09 (low transmission efficiency) preferred neither host. In contrast, BYDV infection of ‘Vixen’ did not affect the plant’s appeal for aphid clone R07. Host plant access, indicated by ingestion and observed by electrical penetration graph technique for a period of 2 h, was facilitated on BYDV-infected cv. ‘Rubina’ for the clones R07 and D10, whereas an opposite effect was observed for the clone R09. For R07 and R09, the difference was not visible after a period of 5 h. As observed earlier for BYDV-infected wheat, enhanced emission of volatile organic compounds associated with virus-induced attraction was detected for BYDV-infected cv. ‘Rubina.’ It is concluded that host plant preference is possibly linked with a high BYDV transmission efficiency as observed for the clone R07, leading to a fitness advantage of this clone as indicated by early increased ingestion. This advantage is not present on BYDV-tolerant genotypes most likely due to the absence of infection symptoms.

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