Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Serrano golden mosaic bigeminivirus

Index

• Nomenclature
• Host range, transmission and symptoms
• Physical and biochemical properties
• Taxonomy and relationships
• Comments and References

Data collated by J.K. Brown, 1991.

Nomenclature

Acronym

SGMV

ICTV decimal code

29.0.3.0.033

Host range and symptoms

Natural host range and symptoms

Symptoms vary cyclically over a few weeks. Symptoms golden mosaic.
• Capsicum annuum cvs Serrano, Bell, Anaheim - golden mosaic; green mosaic, stunting and fruit deformation.
• Lycopersicon esculentum - interveinal chlorosis; sometimes necrosis of blossom end of fruit and deformation.

Transmission

Transmitted by a vector; an insect; Bemisia tabaci; Aleyrodidae. Not transmitted by Trialeurodes vaporariorum. Transmitted in a semi-persistent manner, or in a persistent manner. Virus lost by the vector when it moults; transmitted by mechanical inoculation (with difficulty); transmitted by grafting; not transmitted by contact between plants; not transmitted by seed.

Geographical distribution

Spreads in Mexico (Sinaloa and, possibly, Sonora), the USA (in greenhouse grown tomatoes in Arizona).

Experimental host range

Few (<3) families susceptible. Experimentally infected plants mostly show golden mosaic.

Diagnostically susceptible host species and symptoms

• Capsicum frutescens, C. annuum - golden mosaic.
• Lycopersicon esculentum, Datura stramonium - yellow mosaic.

Diagnostically insusceptible host species

Cucumis melo, Cucurbita maxima, C. pepo, Lactuca sativa, Gossypium hirsutum.

Maintenance and propagation hosts

Capsicum annuum, Lycopersicon esculentum.

Assay hosts (Local lesions or Whole plants)

Capsicum annuum (W).

Susceptible host species

• Capsicum annuum
• Capsicum frutescens
• Datura stramonium
• Lycopersicon esculentum

Insusceptible host species

• Cucumis melo
• Cucurbita maxima
• Cucurbita pepo
• Gossypium hirsutum
• Lactuca sativa

Families containing susceptible hosts

• Solanaceae (4/4)

Families containing insusceptible hosts

• Compositae (1/1)
• Cucurbitaceae (3/3)
• Malvaceae (1/1)

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains few virions.

Purification method

Similar to that for other geminiviruses, but variable concentrations in pepper add difficulty.

Particle morphology

Virions geminate; 20 nm in diameter; dimers 30 nm in length.

Physical properties

A₂₆₀/A₂₈₀ ratio 1.37.

Biochemical properties

Virions contain 20 % nucleic acid; 80 % protein.

Genome consists of DNA; single-stranded; circular. Total genome size 5.2 kb. Genome of two parts; largest (or only) genome part 2.6 kb; the 2nd largest 2.6 kb. Genomic nucleic acid isolated by Brown: incubate 1% SDS at 42ºC; extract with phenol chloroform, ethanol precipitate. Infectivity retained when deproteinised with proteases; retained when deproteinised with phenol or detergent.

Taxonomy and relationships

bigeminivirus: Geminiviridae

Best tests for diagnosis

Distinguish by transmission with Bemisia tabaci to susceptible pepper.

Comments and References

References

• Brown, J.K. and Poulos, B.T. (1990). Plant Dis. 74: 720.

Cite this publication as: Brunt, A.A., Crabtree, K., Dallwitz, M.J., Gibbs, A.J., Watson, L. and Zurcher, E.J. (eds.) (1996 onwards). `Plant Viruses Online: Descriptions and Lists from the VIDE Database. Version: 20^th August 1996.' URL http://biology.anu.edu.au/Groups/MES/vide/

Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993) should also be cited.