Two newly described begomoviruses of Macroptilium lathyroides and common bean

A. M. Idris, E. Hiebert, J. Bird, Judith K Brown

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Macroptilium lathyroides, a perennial weed in the Caribbean region and Central America, is a host of Macroptilium yellow mosaic Florida virus (MaYMFV) and Macroptilium mosaic Puerto Rico virus (MaMPRV). The genomes of MaYMFV and MaMPRV were cloned from M. lathyroides and/or field-infected bean and the DNA sequences were determined. Cloned A and B components for both viruses were infectious when inoculated to M. lathyroides and common bean. Comparison of the DNA sequences for cloned A and B components with well-studied begomovims indicated that MaMPRV (bean and M. lathyroides) and MaYMFV (M. lathyroides) are unique, previously undescribed begomo-viruses from the Western Hemisphere. Phylogenetic analysis of viral A components indicated that the closest relative of MaYMFV are members of the Bean golden yellow mosaic virus (BGYMV) group, at 76 to 78% nucleotide identity, whereas the closest relative for the A component of MaMPRV was Rhynchosia golden mosaic virus at 78% nucleotide identity. In contrast, BGYMV is the closest relative for the B component of both MaYMFV and MaMPRV, with which they share ≈68.0 and ≈72% identity, respectively. The incongruent taxonomic placement for the bipartite components for MaMPRV indicates that they did not evolve entirely along a common path. MaYMFV and MaMPRV caused distinctive symptoms in bean and M. lathyroides and were transmissible by the whitefly vector and by grafting; however, only MaYMFV was mechanically transmissible. The experimental host range for the two viruses was similar and included species within the families Fabaceae and Malvaceae, but only MaYMFV infected Malva parviflora and soybean. These results collectively indicate that MaMPRV and MaYMFV are new, previously undescribed species of the BGYMV group, a clade previously known to contain only strains and isolates of BGYMV from the Caribbean region that infect Phaseohts spp. Both MaYMFV and MaMPRV may pose an economic threat to bean production in the region.

Original languageEnglish (US)
Pages (from-to)774-783
Number of pages10
JournalPhytopathology
Volume93
Issue number7
StatePublished - Jul 1 2003

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Macroptilium lathyroides
Begomovirus
beans
Bean golden yellow mosaic virus
Rhynchosia golden mosaic virus
viruses
Malva parviflora
nucleotides
Macroptilium yellow mosaic Florida virus
perennial weeds
Macroptilium mosaic Puerto Rico virus
nucleotide sequences
Malvaceae
grafting (plants)
Aleyrodidae
Central America
host range
signs and symptoms (plants)
Fabaceae

Keywords

  • Aleyrodidae
  • Bemisia tabaci
  • Geminiviridae
  • Legume virus
  • Whitefly-transmitted virus

ASJC Scopus subject areas

  • Plant Science

Cite this

Two newly described begomoviruses of Macroptilium lathyroides and common bean. / Idris, A. M.; Hiebert, E.; Bird, J.; Brown, Judith K.

In: Phytopathology, Vol. 93, No. 7, 01.07.2003, p. 774-783.

Research output: Contribution to journalArticle

Idris, AM, Hiebert, E, Bird, J & Brown, JK 2003, 'Two newly described begomoviruses of Macroptilium lathyroides and common bean', Phytopathology, vol. 93, no. 7, pp. 774-783.
Idris, A. M. ; Hiebert, E. ; Bird, J. ; Brown, Judith K. / Two newly described begomoviruses of Macroptilium lathyroides and common bean. In: Phytopathology. 2003 ; Vol. 93, No. 7. pp. 774-783.
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abstract = "Macroptilium lathyroides, a perennial weed in the Caribbean region and Central America, is a host of Macroptilium yellow mosaic Florida virus (MaYMFV) and Macroptilium mosaic Puerto Rico virus (MaMPRV). The genomes of MaYMFV and MaMPRV were cloned from M. lathyroides and/or field-infected bean and the DNA sequences were determined. Cloned A and B components for both viruses were infectious when inoculated to M. lathyroides and common bean. Comparison of the DNA sequences for cloned A and B components with well-studied begomovims indicated that MaMPRV (bean and M. lathyroides) and MaYMFV (M. lathyroides) are unique, previously undescribed begomo-viruses from the Western Hemisphere. Phylogenetic analysis of viral A components indicated that the closest relative of MaYMFV are members of the Bean golden yellow mosaic virus (BGYMV) group, at 76 to 78{\%} nucleotide identity, whereas the closest relative for the A component of MaMPRV was Rhynchosia golden mosaic virus at 78{\%} nucleotide identity. In contrast, BGYMV is the closest relative for the B component of both MaYMFV and MaMPRV, with which they share ≈68.0 and ≈72{\%} identity, respectively. The incongruent taxonomic placement for the bipartite components for MaMPRV indicates that they did not evolve entirely along a common path. MaYMFV and MaMPRV caused distinctive symptoms in bean and M. lathyroides and were transmissible by the whitefly vector and by grafting; however, only MaYMFV was mechanically transmissible. The experimental host range for the two viruses was similar and included species within the families Fabaceae and Malvaceae, but only MaYMFV infected Malva parviflora and soybean. These results collectively indicate that MaMPRV and MaYMFV are new, previously undescribed species of the BGYMV group, a clade previously known to contain only strains and isolates of BGYMV from the Caribbean region that infect Phaseohts spp. Both MaYMFV and MaMPRV may pose an economic threat to bean production in the region.",
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