Arachis virus Y, a new potyvirid from Brazilian forage peanut ( Arachis pintoi )
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Arachis virus Y, a new potyvirid from Brazilian forage peanut (Arachis pintoi) Késsia Fátima Cunha Pantoja1 · Alessandra de Jesus Boari2 · Bruno Rossitto De Marchi3 · Jorge Alberto Marques Rezende4 · Elliot Watanabe Kitajima4 · Rivadalve Coelho Gonçalves5 · Giselle Mariano Lessa Assis5 · Rosana Blawid6 · Renate Krause‑Sakate1 Received: 19 May 2020 / Accepted: 18 June 2020 © Springer-Verlag GmbH Austria, part of Springer Nature 2020
Abstract The complete nucleotide sequence of a new member of the family Potyviridae, which we propose to name “Arachis virus Y” (ArVY), is reported from forage peanut plants (Arachis pintoi) exhibiting virus-like symptoms. The ArVY positive-sense RNA genome is 9,213 nucleotides long and encodes a polyprotein with 2,947 amino acids that is predicted to be cleaved into 10 mature proteins. The complete single open reading frame (ORF) of ArVY shares 47% and 34% nucleotide and amino acid sequence identity, respectively, with the closest related virus, soybean yellow shoot virus. Electron microscopic analysis revealed elongated viral particles typical of those found in plant cells infected with potyviruses. The forage peanut Arachis pintoi (Krapov. & W.C. Gregory) (Fabaceae) is a native forage legume of Brazil that is mostly found in the central region of the country [1]. It is used as pasture because it is very tolerant of grazing, has a high protein content, and fixes atmospheric nitrogen [2]. Some pathogens, such as viruses, may occur in forage peanut and decrease leaf production [3]. So far, few viruses have been isolated from forage peanut crops. Peanut mottle potyvirus [4] and cowpea mild mottle carlavirus [5] have been reported Handling editor: Ioannis E. Tzanetakis. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00705-020-04742-z) contains supplementary material, which is available to authorized users. * Késsia Fátima Cunha Pantoja [email protected] 1
UNESP - Universidade Estadual Paulista/Faculdade de Ciências Agronômicas de Botucatu, Botucatu, São Paulo 18610‑034, Brazil
2
Embrapa Amazônia Oriental, Belém, PA, Brazil
3
Gulf Coast Research and Education Center, University of Florida, Wimauma, FL 33598, USA
4
ESALQ/Universidade de São Paulo, Piracicaba, São Paulo, Brazil
5
Embrapa Acre, Rio branco, AC, Brazil
6
Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
in Brazil. In Colombia, peanut mottle potyvirus, turnip yellows polerovirus, and the allexiviruses Arachis pintoi virus A and Arachis pintoi virus B have been reported [6]. The family Potyviridae is one of the most important families of plant viruses, with a wide range of hosts encompassing dicotyledonous and monocotyledonous plant species. The family is currently composed of 12 genera and 228 species [7]. The 12 genera are differentiated by biological criteria, mainly transmission by specific vectors, and by molecular data [8, 9]. The Active Germplasm Bank (BGA) of forage peanut at Embrapa Acre (Rio Branco, AC, Brazil) in
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