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<p>During a survey of oat and barley crops in northern New South Wales (NSW) and southern Queensland (Qld), a novel member of the genus <i>Luteovirus</i> (family <i>Tombusviridae</i>) causing leaf reddening and yellow dwarf symptoms in oats and barley was found in both States. A near-complete genome of the virus tentatively named cereal red leaf virus (CrRLV; tentative species name <i>Luteovirus foliarubra</i>) was obtained through high throughput sequencing. The virus was genomically distinct from, but reacted with antibodies to, barley yellow dwarf virus-MAV. CrRLV was transmitted by <i>Rhopalosiphon padi</i> but not by <i>R. maidis</i>. Barley yellow dwarf virus-PAV was found in both NSW and Qld on barley and oats. Additionally, barley virus G was found for the first time in Qld and NSW, on barley, barley yellow dwarf virus-PAS for the first time in Qld, on barley, cereal yellow dwarf virus-RPS for the first time in NSW, on oats, and cereal yellow dwarf virus-RPV was found in NSW on oats and barley and for the first time in Qld, on oats.</p>

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The identification of a novel cereal-infecting luteovirus, cereal red leaf virus, and clarification of other yellow dwarf viruses present in the Northern grain region of Australia

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  • 发表日期：

    2026年3月19日

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  • Kathleen S. Crew,
  • Mohammad Abdullah Ahmed Al-Mashhadani,
  • Mark Schwinghamer,
  • Murray Sharman,
  • John E. Thomas

摘要

During a survey of oat and barley crops in northern New South Wales (NSW) and southern Queensland (Qld), a novel member of the genus Luteovirus (family Tombusviridae) causing leaf reddening and yellow dwarf symptoms in oats and barley was found in both States. A near-complete genome of the virus tentatively named cereal red leaf virus (CrRLV; tentative species name Luteovirus foliarubra) was obtained through high throughput sequencing. The virus was genomically distinct from, but reacted with antibodies to, barley yellow dwarf virus-MAV. CrRLV was transmitted by Rhopalosiphon padi but not by R. maidis. Barley yellow dwarf virus-PAV was found in both NSW and Qld on barley and oats. Additionally, barley virus G was found for the first time in Qld and NSW, on barley, barley yellow dwarf virus-PAS for the first time in Qld, on barley, cereal yellow dwarf virus-RPS for the first time in NSW, on oats, and cereal yellow dwarf virus-RPV was found in NSW on oats and barley and for the first time in Qld, on oats.