CRIS Project Titles:
1. Development of Detection and Protection
Technologies for Viruses and Bacteria of Major Significance to Ornamental and
Nursery Crops.
2. Genetic Improvement of Floral Crops for
Pest, Disease, and Stress Tolerance and Ornamental Qualities.
INTRODUCTION:
Conducts research on the biochemical and biological nature of plant viruses,
their genomes, and their gene products. Develops and utilizes serological and
nucleic acid-based reagents and technologies for improved detection, differentiation
and identification of new and emerging viruses; determines the genome organization
of selected important ornamental viruses; and, develops methods and new strategies
to confer virus resistance in plants through expression of antibody proteins
or replicase-binding peptides in transgenic plants.
PROGRESS:
Research acomplishments over the last five years have included: 1) determined
the full-length genome sequences of four unique viruses of geranium, Pelargonium
line pattern virus, Pelargonium
ringspot virus, the related Elderberry latent virus, and Pelargonium
chlorotic ring pattern virus; and, based on their genome organization, proposed
they be included in a new genus (Pelarspovirus) in Tombusviridae; 2)
determined the full-length genome sequences of two unique US isolates of Pepino
mosaic virus and the 3' terminal portion of a third MD isolate; 3)
discovered, partially characterized, cloned and sequenced the 3' terminal portions
of seven new and emerging potyviruses infecting Impatiens, Omphalodes, Spiranthes orchid, Euphorbia 'Crown
of Thorns', and Tricyrtis 'Toad Lily'; 4) characterized re-emerging
viruses and determined new (first report) ornamental hosts for several viruses,
including Bean yellow mosaic virus (BYMV) and Broad bean wilt virus (in Verbena), Lily
virus X (in Tricyrtis), and Dasheen mosaic virus (in Spiranthes); 5)
developed and evaluated the stable expression of recombinant single-chain (scFv)
BYMV-specific and potyvirus broad-spectrum antiviral monoclonal antibodies (McAbs)
as phage-displayed proteins in bacteria, and as TMV virus vector-expressed proteins
in N. benthamiana; and, 6) continued collaborative research on the
biological, serological and molecular characterization of, and development of
detection strategies for, Plum pox virus.
PLANS:
Current research includes: 1) developing full length infectious DNA clones
of a Pelarspovirus to initiate gene reassortment analysis to determine virus-specific
sequences responsible for disease pathology; 2) develop antiviral scFv constructs
from broad-spectrum potyviral protease "HC-Pro" McAbs for expression
in transgenic plants as another means of viral protection; 3) develop virus-specific
and broad-spectrum reactive antibodies to viral synthetic peptides and/or bacterial
expression clones for improved virus detection; 4) continue research on the detection
and characterization of unknown, new and emerging viruses in important ornamental
plants.
RECENT PUBLICATIONS:
Hu, J.S., Ferreria, S., Wang, M., Borth, W.B., Mink, G., and Jordan, R.L. Purification, host range, serology, and partial sequencing of Dendrobium mosaic potyvirus, a new member of the bean common mosaic virus subgroup. Phytopathology 85:542-546. 1995.
Hu, J.S., Li, H.P., Wang, M., and Jordan, R.L. Comparison of dot blot, ELISA, and RT-PCR assays for detection of two cucumber mosaic virus isolates infecting banana in Hawaii. Plant Disease 79:902-906. 1995.
Barnett, O.W., ... Jordan, R.L., et al. Family Potyviridae. In: Virus Taxonomy. Sixth Report of the International Committee on Taxonomy of Viruses. (Murphy et al; Eds), Springer-Verlag, NY. pp348-358. 1995.
Kinard, G.R., Jordan, R.L. and Hurtt, S.H. Partial characterization of Pelargonium line pattern and Pelargonium ringspot viruses. Acta Horticulture 432: 148-155. 1996.
Jordan, R.L. Cloning and Sequence Analysis of the N Gene of Several Morphologically and Serologically Distinct Isolates of Impatiens Necrotic Spot Tospovirus. Phytoparasitica24:348-349. 1996.
Gillaspie, Jr., A.G., Hopkins, M.S., Pinnow, D.L., and Jordan, R.L. Characterization of a potyvirus of the bean yellow mosaic virus subgroup in Sesbania speciosa germplasm. Plant Disease 82:807-810. 1998.
Berger, P., Barnett, O.W., ... Jordan, R.L., et al. Family Potyviridae. In: Virus Taxonomy, Classification and Nomenclature of Viruses. Seventh Report of the International Committee on Taxonomy of Viruses. (van Regenmortel et al; Eds), Academic Press, NY. pp703-724. 2000.
Jordan, R.L. Successful development of monoclonal
antibodies to three carnation viruses, using an admixture of only partially
purified virus preparations as immunogen, and their use in virus diagnosis. Acta
Horticulture 568:177-184. 2002.
Kinard, G.R. and Jordan, R.L. Genome
organization of Pelargonium chlorotic ring pattern virus: Further implications
for Tombusviridae taxonomy. Acta Horticulture 568:17-28. 2002.
Jordan, R.L., Guaragna, M.A, Kinard,
G.R., and Lynn, S. Detection and first report of
Dasheen mosaic virus and a second potyvirus infecting the terrestrial orchid Spiranthes
cernua. Acta Horticulture 568:253-260. 2002.
Gulya, T.J., Shiel,
P.H., Freeman, T.F., Jordan,
R.L., Isakert, T.A., and Berger, P.H. Host range and characterization
of sunflower mosaic potyvirus. Phytopathology 92:694‑702. 2003.
Nemchinov,
L.G., Hammond, J., Jordan, R.L.,
and Hammond, R.W. The complete nucleotide sequence, genome organization,
and specific detection of Beet mosaic virus. Arch. Virol. 149:1201-1214. 2004.
Guaragna, M.A., Jordan, R.L. and
Putnam, M. First report of Bean yellow mosaic virus (pea mosaic strain)
in Verbena x hybrida. Plant Disease 88:574. 2004.
Berger,
P.H, ... Jordan, R.L., et
al. 2005. Potyviridae. In: Virus Taxonomy. Eighth
Report of the International Committee on Taxonomy of Viruses. Springer-Verlag,
NY. pp819-841. 2005.
Maroon-Lango, C.J., Guaragna, M.A., Jordan,
R.L., Hammond, J., Bandla, M., and Marquardt, S. Two unique US
isolates of Pepino mosaic virus from a limited source of pooled tomato
tissue are distinct from a third (European-like) US isolate. Arch. Virol
150:1187-1201. 2005.
Guaragna, M.A., Ndum, O., Jordan,
R.L. Detection and characterization of two previously undescribed potyviruses
in the terrestrial orchid Spiranthes cernua. Acta Horticulturae (Accepted
May 16, 2005). 2006.
Guaragna, M.A., Jordan, R.L. and
Putnam, M. First molecular evidence of the occurrence of a pea mosaic strain
of Bean yellow mosaic virus in Verbena x hybrida. Acta
Horticulturae (Accepted May 16, 2005). 2006.
Jordan, R.L. and Guaragna, M.A. Detection and characterization of a new potyvirus, Impatiens flower break virus, infecting New Guinea Impatiens. Archives of Virology (submitted).
Jordan, R.L., Guaragna, M.A., Van
Buren, T., Putnam, M.L. First Report of a New Potyvirus, Tricyrtis
virus Y, and Lily virus X Potexvirus, in Tricyrtis formosana in
the United States. Plant Disease (submitted)
Other Publications:
Jordan, R.L. and Hammond, J. Expression of viral genes and viral and antiviral proteins in transgenic plants to confer virus resistance. In: Pest Management: Biologically Based Technologies (Lumsden and Vaughn, eds.) American Chemical Society, pp. 304-312. 1994.
Hudson, D.,..., Hsu, H.T., Jordan, R.L., Kamo, K.K., et al. Tactics and strategies in solid-phase peptide synthesis: New directions, methods and applications. In: Symposium on solid-phase peptide synthesis. 1994.
Biancalana, S., Hudson, D., ..., Hsu, H.T., Jordan, R.L., Kamo, K.K., et al. Tactics and strategies in solid-phase peptide synthesis: New directions, methods and applications. In: Innovation and Perspectives in Solid Phase Synthesis: Peptides, Polypeptides and Oligonucleotides (R. Epton, ed.), Intercept Limited, Andover, England, pp. 135‑152. 1994.
Jordan, R.L. Production and application of monoclonal antibodies to plant pathogenic bacteria, Spiroplasmas, and mycoplasma-like organisms. In: Advanced Methods in Plant Pathology, CRC Press, Boca Raton, FL. 1994.
Hammond, J. and Jordan, R.L. Potyviruses. In: Encyclopedia of Plant Pathology. (Maloy and Murray, eds), John Wiley & Sons, NY, NY. pp810-817. 2001.
Hammond, J., Hsu, H.T., Huang, Q., Jordan, R.L., Kamo, K. and Pooler, M. Transgenic approaches to disease resistance in ornamental crops. Journal of Crop Improvement (Accepted May 24, 2005). 2006.
GenBank Submissions:
AF227728 Pepper mottle virus, coat protein gene
AF465545 Sunflower mosaic virus, 3' terminal genome portion
AY038066 Elderberry latent virus, complete genome
AY038067 Pelargonium line pattern virus, complete genome
AY038068 Pelargonium ringspot virus, complete genome
AY038069 Pelargonium chlorotic ring pattern virus, complete genome
AY206394 Beet mosaic virus, complete genome
AY508411 Pepino mosaic virus, US3 strain, 3' terminal genome portion
AY509926 Pepino mosaic virus, US1 strain, complete genome
AY509927 Pepino mosaic virus, US2 strain, complete genome
AY520092 Bean yellow mosaic virus, PMV strain, Verbena isolate, 3' terminal portion
AY685218 Spiranthes mosaic virus 3, 3' terminal genome portion
AY685219 Spiranthes mosaic virus 2, 3' terminal genome portion
AY697300 Euphorbia ringspot virus, 3' terminal genome portion
AY864849 Lily virus X, Tricyrtis formosana isolate, 3' terminal genome portion
AY864850 Tricyrtis virus Y, 3' terminal genome portion
AY864851 Impatiens flower break potyvirus, 3' terminal genome portion
AY974328 Omphalodes virus Y, 3' terminal genome portion
DQ523597 Impatiens necrotic spot virus, Schizanthus -B isolate, NP gene
DQ523598 Impatiens necrotic spot virus, Gloxinia -Igg isolate, NP gene
DQ523599 Tomato spotted wilt virus, L isolate, nucleoprotein gene
EF441726 Vallota mosaic virus, 3' terminal genome portion
EU363481 Columbian datura virus, 3' terminal genome portion
EU433920 Arabis mosaic virus-MD, coat protein gene
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