Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Lisianthus necrosis (?) necrovirus

Index

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

Data collated by P. Jeyanandarajah, 1991.

Nomenclature

Acronym

LNV

ICTV decimal code

44.0.1.T.005

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Eustoma russellianum - necrotic lesions and rings, tip necrosis and, in some cultivars, colour breaking.

Transmission

Transmitted by a vector; a fungus; Olpidium sp.; Chytridiales. Virus transmitted by mechanical inoculation.

Geographical distribution

Spreads in Japan.

Experimental host range

Many (>9) families susceptible. Experimentally infected plants mostly show necrotic local lesions.

Diagnostically susceptible host species and symptoms

• Gomphrena globosa, Nicotiana clevelandii - local lesions, systemic necrotic spots and/or general necrosis.
• Chenopodium amaranticolor, C. quinoa, Cucumis sativus, Nicotiana glutinosa, N. tabacum, Phaseolus vulgaris, Sesamum indicum, Vigna unguiculata - necrotic local lesions; not systemic.

Diagnostically insusceptible host species

Brassica campestris ssp. rapa, Capsicum annuum, Dianthus caryophyllus, Lycopersicon esculentum, Nicotiana debneyi.

Maintenance and propagation hosts

Nicotiana clevelandii, Eustoma russellianum.

Assay hosts (Local lesions or Whole plants)

Chenopodium amaranticolor (L), Phaseolus vulgaris (L), Nicotiana tabacum cv. Xanthi (L), N. clevelandii (W).

Susceptible host species

• Chenopodium amaranticolor
• Chenopodium quinoa
• Cucumis sativus
• Cucurbita maxima
• Cucurbita moschata
• Cucurbita pepo
• Eustoma russellianum
• Gomphrena globosa
• Nicotiana clevelandii
• Nicotiana glutinosa
• Nicotiana tabacum
• Petunia × hybrida
• Phaseolus vulgaris
• Sesamum indicum
• Tetragonia tetragonioides
• Vigna unguiculata
• Vigna unguiculata ssp. sesquipedalis
• Zinnia elegans

Insusceptible host species

• Brassica campestris ssp. rapa
• Capsicum annuum
• Dianthus caryophyllus
• Lycopersicon esculentum
• Nicotiana debneyi

Families containing susceptible hosts

• Amaranthaceae (1/1)
• Chenopodiaceae (2/2)
• Compositae (1/1)
• Cucurbitaceae (4/4)
• Gentianaceae (1/1)
• Leguminosae-Papilionoideae (3/3)
• Pedaliaceae (1/1)
• Solanaceae (4/7)
• Tetragoniaceae (1 /1)

Families containing insusceptible hosts

• Caryophyllaceae (1/1)
• Cruciferae (1/1)
• Solanaceae (3/7)

Sources of host-range data

Iwaki et al. (1987).

Physical and biochemical properties

Properties of particles in sap

TIP: 90-95 °C. LIV: more than 63 days. DEP: log₁₀ minus 9-10.

Purification method

Iwaki et al. (1987).

Particle morphology

Virions isometric; not enveloped; 30 nm in diameter; without a conspicuous capsomere arrangement.

Physical properties

One sedimenting component in purified preparations; sedimentation coefficient 136 S. Density 1.333 g cm^-3 in CsCl. A₂₆₀/A₂₈₀ ratio 1.61.

Biochemical properties

Genome consists of RNA; single-stranded. Total genome size 4.185 kb.

Features of proteins

Virion protein(s) one; M_r 35500; coat protein.

Taxonomy and relationships

Possible Necrovirus

Virus(es) with serologically unrelated virions

Tobacco necrosis, cucumber necrosis and melon necrotic spot viruses.

Comments and References

References

• Iwaki, M., Hanada, K., Maria, E.R.A. and Onogi, S. (1987). Phytopathology 77: 867.
• Iwaki, M., Maria, E.R.A., Hanada, K., Onogi, S. and Zenbayashi, R. (1985). Ann. Phytopath. Soc. Japan 52: 355.

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.