Recent progress on harm, pathogen classification, control and pathogenic molecular mechanism of anthracnose of oil-tea

Abstract

Oil tea (Camellia oleifera), mainly used to produce high-quality edible oil, is an important cash crop in China. Anthracnose of oil tea is a considerable factor that limits the yield of tea oil. In order to effectively control the anthracnose of oil tea, researchers have worked hard for many years, and great progress has been made in the research of oil tea anthracnose. For instance, researchers isolated a variety of Colletotrichum spp. from oil tea and found that Colletotrichum fructicola was the most popular pathogen in oil tea. At the same time, a variety of control methods have been explored, such as cultivating resistant varieties, pesticides, and biological control, etc. Furthermore, the research on the molecular pathogenesis of Colletotrichum spp. has also made good progress, such as the elaboration of the transcription factors and effector functions of Colletotrichum spp. The authors summarized the research status of the harm, pathogen types, control, and pathogenic molecular mechanism of oil tea anthracnose in order to provide theoretical support and new technical means for the green prevention and control of oil tea anthracnose.

Overexpression of dihydroflavonol 4-reductase (CoDFR) boosts flavonoid production involved in the anthracnose resistance

“…has a wide range of hosts and can quickly spread under warm and humid conditions. Meanwhile, the immune mechanism of the host is not well understood, which poses a challenge to control anthracnose ( Chen et al., 2022 ; Yang et al., 2022 ). Recently, anthracnose has become a worldwide threat, which seriously restricts crop quality and yield improvement, resulting in huge economic losses ( Jiang et al., 2021 ).…”

“…However, with an increase in oil tea tree cultivation areas, there are prevailing reports on the occurrence of anthracnose as the main disease in oil tea production areas. The annual output of oil tea tree seeds has been reduced by 20%-40% due to anthracnose, and even 80% in severe cases, causing significant losses to local foresters and oil tea tree enterprises ( Zhang et al., 2019 ; Li and Li, 2020 ; Chen et al., 2022 ). Many approaches have been used to reduce the losses caused by anthracnose, including agronomic measures and host resistance, but these measures are not always feasible ( Xu et al., 2020 ; Chen et al., 2022 ).…”

“…The annual output of oil tea tree seeds has been reduced by 20%-40% due to anthracnose, and even 80% in severe cases, causing significant losses to local foresters and oil tea tree enterprises ( Zhang et al., 2019 ; Li and Li, 2020 ; Chen et al., 2022 ). Many approaches have been used to reduce the losses caused by anthracnose, including agronomic measures and host resistance, but these measures are not always feasible ( Xu et al., 2020 ; Chen et al., 2022 ). Chemical pesticides can prevent anthracnose, but resistance of the pathogens develops easily and may be harmful to human health ( Tian et al., 2019 ; Chen et al., 2022 ).…”

“…Many approaches have been used to reduce the losses caused by anthracnose, including agronomic measures and host resistance, but these measures are not always feasible ( Xu et al., 2020 ; Chen et al., 2022 ). Chemical pesticides can prevent anthracnose, but resistance of the pathogens develops easily and may be harmful to human health ( Tian et al., 2019 ; Chen et al., 2022 ). Mining disease-resistant genes to cultivate resistant varieties is the most economical and effective measure to prevent and control anthracnose.…”

The Laccase Family Gene CsLAC37 Participates in Resistance to Colletotrichum gloeosporioides Infection in Tea Plants

“…Various methods, such as prevention and treatment, have been applied to control anthracnose disease in tea plantations. Chemical treatment is one of the most widely used methods for anthracnose disease control [ 5 ]. For instance, the Bordeaux mixture, chlorothalonil, carbendazim, and thiophanate methyl are effective chemicals that have been extensively used in tea plantations [ 6 ].…”