NDLI: Molecular characterization of previously elusive badnaviruses associated with symptomatic cacao in the New World

Content Provider	Springer Nature Link
Author	Chingandu, matter Zia ur rehman, Muhammad Sreenivasan, Thyail N. Surujdeo Maharaj, Surendra Umaharan, Pathmanathan Gutierrez, Osman A. Brown, Judith K.
Copyright Year	2017
Abstract	Suspected virus-like symptoms were observed in cacao plants in Trinidad during 1943, and the viruses associated with these symptoms were designated as strains A and B of cacao Trinidad virus (CTV). However, viral etiology has not been demonstrated for either phenotype. Total DNA was isolated from symptomatic cacao leaves exhibiting the CTV A and B phenotypes and subjected to Illumina HiSeq and Sanger DNA sequencing. Based on de novo assembly, two apparently full-length badnavirus genomes of 7,533 and 7,454 nucleotides (nt) were associated with CTV strain A and B, respectively. The Trinidad badnaviral genomes contained four open reading frames, three of which are characteristic of other known badnaviruses, and a fourth that is present in only some badnaviruses. Both badnaviral genomes harbored hallmark caulimovirus-like features, including a tRNAMet priming site, a TATA box, and a polyadenylation-like signal. Pairwise comparisons of the RT-RNase H region indicated that the Trinidad isolates share 57-71% nt sequence identity with other known badnaviruses. Based on the system for badnavirus species demarcation in which viruses with less than 80% nt sequence identity in the RT-RNase gene are considered members of separate species, these isolates represent two previously unidentified badnaviruses, herein named cacao mild mosaic virus and cacao yellow vein banding virus, making them the first cacao-infecting badnaviruses identified thus far in the Western Hemisphere.
Starting Page	1363
Ending Page	1371
Page Count	9
File Format	PDF
ISSN	03048608
Journal	Archives of Virology
Volume Number	162
Issue Number	5
e-ISSN	14328798
Language	English
Publisher	Springer Vienna
Publisher Date	2017-01-25
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Virology Medical Microbiology Infectious Diseases
Content Type	Text
Resource Type	Article
Subject	Virology Medicine

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