Olive anthracnose: a yield‐ and oil quality‐degrading disease caused by several species of Colletotrichum that differ in virulence, host preference and geographical distribution

Abstract

Olive production systems, harvest and post-harvest processing have experienced profound changes in recent years, namely new training systems using specific cultivars, new harvest and processing techniques and new organoleptic market requests. Changes are also occurring in both the geographical distribution of pathogen populations and the taxonomic framework. In addition, stricter rules concerning pesticide use are likely to have a strong impact on control strategies. A detailed knowledge of pathogen diversity, population dynamics and host-pathogen interactions is basal for the deployment of durable and effective disease control strategies, whether based on resistance breeding, agronomic practices or biological or chemical control.

Ocorrência De Antracnose Em Pequizeiro Na Região Do Triângulo Mineiro, Minas Gerais

“…Os botões florais apresentaram-se mumificados, observando-se o secamento rápido, enrugamento e escurecimento, reduzindo-os sensivelmente em tamanho (Figura 1). A sintomatologia de mumificação de flores e frutos é muito comum em diversas frutíferas atacadas por antracnose (TALHINHAS et al, 2018). Na análise das placas de Petri, as colônias do fungo apresentavam-se inicialmente brancas, tornando-se acinzentadas a partir do centro após quatro dias de incubação a ±1ºC e fotoperíodo de 12 horas.…”

Impact of Colletotrichum acutatum Pathogen on Olive Phenylpropanoid Metabolism

“…The secondary metabolites have an important role in the plant defense against fungal pathogen on different crops. Olives infected with C. acutatum are reported to have both substantial yield losses, as well as a considerable impact on fruit sensorial and chemical changes [11]. PAL is known to play an important role in the phenylpropanoid pathway being involved in the biosynthesis of the polyphenol and secondary metabolites.…”

“…During the last decades, this disease has spread from the initial affected olive growing region of Alentejo, where it mainly attacked the susceptible cv. Galega, to all the country and diverging in other cultivars [8][9][10][11]. The cv.…”

Aspectos fitotécnicos do cultivo da oliveira no Rio Grande do Sul II: estudos sobre cochonilhas e controle da antracnose

“…1). A antracnose da oliveira é causada por um complexo de espécies do fungo Colletotrichum que, além de diminuir a produtividade, interfere na qualidade do azeite produzido (CACCIOLA et al, 2012;TALHINHAS et al, 2018) Em cada ocasião de amostragem, quatro ramos, cada um com aproximadamente 20 cm e 20 folhas, foram coletados aleatoriamente, de 12 oliveiras, de três variedades ('Arbequina', 'Arbosana' e 'Koroneiki').…”