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This research aimed to identify broad bean wilt virus 2 in Paulownia tomentosa plants in China and analyze its genetic diversity.

November 17, 2025Plant Disease

First Report of Broad Bean Wilt Virus 2 Infecting Paulownia tomentosa in China

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Field survey identified BBWV2 in P. tomentosa plants, implying high infection rates in China.

This research aimed to identify broad bean wilt virus 2 in Paulownia tomentosa plants in China and analyze its genetic diversity.
Conducted a disease survey in a Beijing park to observe infected P. tomentosa plants.
Extracted total RNA from symptomatic plants for small RNA sequencing.
Performed RT-PCR to confirm virus infections in P. tomentosa and Nicotiana benthamiana after sap transmission.
Identified BBWV2 genome sequences from symptomatic P. tomentosa plants using small RNA sequencing and RT-PCR.
Phylogenetic analysis showed distinct clade formation for BBWV2 from P. tomentosa compared to other isolates.
Transmission studies confirmed that BBWV2 can infect Nicotiana benthamiana.

Qiu et al. (2025) studied this question.

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