Herbicides reduce the severity and sporulation of Phakopsora pachyrhizi in soybean with triple herbicide resistance.

Background: Transgenic event DAS44406-6 (E3) makes soybeans that are herbicide [glyphosate (Gly), 2,4-dichlorophenoxyacetic acid (2,4-D) and glufosinate] and caterpillar resistant. The E3 soybean was commercially released for the 2021/2022 harvest in Brazil. We conducted this study to test whether Gly and 2,4-D applied alone and in a commercial mixture affect Asian soybean rust (ASR).

C-I86F Mutation in Is Stable and Can Be Related to Fitness Penalties.

Succinate dehydrogenase inhibitors (SDHIs) fungicides are used to control Asian soybean rust (), and the C-I86F mutation is related to pathogen resistance. The objective of this study was to determine whether fitness penalties are associated with SDHI resistance (C-I86F mutation) in populations. Moreover, the study investigated whether the C-I86F mutation remained stable after the fungus propagation both in the absence and presence of fungicide.

First Report of causing leaf spot on in Brazil.

, also known as "princess flower", is an ornamental species native to Brazil and naturalized in several countries (Faravani et al. 2007). has a high economic value, with an ornamental and landscape application (Nienow et al.

First Report of causing stalk rot on maize in Brazil.

Maize (Zea mays L.) is one of the most important commodities, and Brazil is the second-largest maize exporter country in the world. In April 2019, the period of the second crop maize (safrinha), it was observed black decayed lesions on roots and wilting of some maize plants, causing a "sudden death" in a commercial area in the west of Paraná state, Brazil (Figure 1A-C).