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The virus-induced alteration in the developmental pattern of the flower stalk is associated to the kind of intracellular dynamics of a non-structural viral protein, which is governed by the change in a single amino acid of the protein.
Many plant developmental traits can be extensively altered by virus infections. Turnip mosaic virus (TuMV) deeply alters the flower stalk elongation trait in Arabidopsis. It differentially does so depending on the infectious virus strain. Two strains are considered here. One completely arrests stalk elongation, while the other induces extensive branching, brittle stalks, and a creeping habit. This work describes how a single amino acid change in the viral protein P3 is associated with the different phenotypes, and with its different subcellular dynamics as a peripheral protein linked to the endoplasmic reticulum. The 3D protein modelling provides the most likely explanation of the changes.
Figura.- El intercambio de un solo aminoácido en la posición 279 de la proteína P3 de TuMV también intercambia los fenotipos del tallo floral de las plantas de Arabidopsis infectadas por las cepas virales UK 1 o JPN 1, así como la localización subcelular y dinámica de movimiento de la proteína.
Original Paper:
López‐González, S., Navarro, J.A., Pacios, L.F., Sardaru, P., Pallás, V., Sánchez, F., Ponz, F. 2020. Association between flower stalk elongation, an Arabidopsis developmental trait, and the subcellular location and movement dynamics of the nonstructural protein P3 of Turnip mosaic virus. Molecular Plant Pathology. DOI: 10.1111/mpp.12976