Aggressiveness and screening for host responses in yerba mate (Ilex paraguariensis) clones to a wilt disease caused by Ceratocystis fimbriata

Abstract

Ceratocystis wilt of yerba mate (Ilex paraguariensis) caused by the fungus Ceratocystis fimbriata was observed in 2018 in commercial plantations located in São Mateus do Sul, PR and Arvorezinha, RS, Brazil, where mortality of the plants was up to 5%. Due to the need of control measures for this disease and to the lack of knowledge on the impact of this pathogen this new host, this study aimed to evaluate the aggressiveness of C. fimbriata isolates collected from yerba mate plantations and screen for host responses in yerba mate clones to Ceratocystis wilt. Two experiments were conducted in a completely randomized design, with 11 treatments (isolates) to assess aggressiveness of the isolates. Two experiments were conducted to assess resistance of yerba mate to C. fimbriata in a completely randomized design in a 6 × 2 factorial scheme (6 clones × 2 isolates) in two different environmental conditions (plant growth chamber and greenhouse). The isolates of C. fimbriata showed different levels of aggressiveness to yerba mate, and all evaluated clones were susceptible to Ceratocystis wilt. The plant growth chamber condition led to a faster death of the plants compared with greenhouse. This information will be useful to understand the pathosystem and seek strategies for controlling this disease in yerba mate.

Uncovering a Complex Virome Associated with the Cacao Pathogens Ceratocystis cacaofunesta and Ceratocystis fimbriata

“…[ 75 , 77 , 78 ], Ficus carica [ 75 , 79 ], Punica granatum [ 80 , 81 ], Colocasia esculenta [ 80 , 82 , 83 ], Theobroma cacao [ 11 ], Gmelina arborea [ 84 , 85 ], Syngonium sp. [ 86 , 87 ] and Ilex paraguariensis [ 88 , 89 ]. In contrast, C. cacaofunesta has only been described in Theobroma cacao [ 90 ] and in species from the genus Herrania sp.…”

Characterization of ceratocystis wilt on eucalyptus and its causal in Southern Bahia, Brazil

“…), Gmelina arborea, kiwi (Actinidia deliciosa), loquat (Eriobotrya japonica), mango (Manguifera indica), pequi (Caryocar brasiliensis), pomegranate (Punica granatum), rubber tree (Hevea brasiliensis), sycamore (Platanus spp. ), teak (Tectona grandis) and yerba mate (Ilex paraguariensis) (da Silva et al 2017;de Brito et al 2021;Engelbrecht and Harrington 2005;Engelbrecht et al 2005;Firmino et al 2012Firmino et al , 2017Heath et al 2009;Li et al 2014a;Marin et al 2003;Méndez-Álvarez et al 2020;Oliveira et al 2015Oliveira et al , 2016Piveta et al 2013;Somasekhara 1999). According to the host species, the occurrence of Ceratocystis spp.…”