Interaction of Neophysopella tropicalis and Cabernet Sauvignon at two different temperatures

Abstract

ABSTRACT Viticulture is one of the most produced fruit crops in the world; therefore, challenges of cropping systems are very relevant. Altered environments pose an obstacle; in addition, climate change influences plant-pathogen relationships and their risks. This work described the interaction of Neophysopella tropicalis (Ono) × ‘Cabernet Sauvignon’ grapevine at 25 and 30 °C, from an epidemiological and anatomical perspective. Rust severity showed no differences in plants kept at 25 and 30 °C; however, a significantly higher number of rust pustules was observed at 30 °C. The accumulation of phenolic compounds in healthy leaves at 25 °C was denser and more homogeneous than in the other treatments. The phenol pattern alteration observed in healthy leaves at 30 °C is possibly related to the larger number of lesions observed at this temperature.

Keywords

• Phakopsora euvitis
• Vitis vinifera
• anatomy
• histopathology
• severity