Physiological and Molecular Characterization of Cephaleuros virescens Occurring in Mango Trees

Characterization of Red Rust Disease Caused by Cephaleuros Virescens Kunze on Cashew Nutin Thesudano-Sahelian Ecological Zone of Cameroon

“…The pathogenicity test was not carried out on young plants, because of the absence of the non growth of the algae in the solid culture media used. Vasconcelos et al (2018), Ren et al (2013) and Ponmurugan et al (2010) have shown that solid agar media such as PDA do not develop the parasitic algae Cephaleuros virescens because it is rich in sugar and starch. Unlike liquid media such as Trebouxia medium provides nitrogen through proteose peptone, which is an essential nutrient for algal growth (Ren et al, 2013).…”

“…Unlike liquid media such as Trebouxia medium provides nitrogen through proteose peptone, which is an essential nutrient for algal growth (Ren et al, 2013). Otherwise, algal cultivation in solid media can only be possible after isolation in liquid media because of gradual adaptation of algae to artificial growth media, firstly liquid and then solid media, and or because of abundant growth of filamentous cells, which could facilitate the transfer of the microorganism to cultivation in solid media (Vasconcelos et al,2018). Few or no work has been done on the size of the structures of the alga attacking the cashew tree.…”

“…Characterization and identification of pathogen consisting of observation, counting, measuring and description of algae structure (lenght and width of sporangium and, sporangiophore) in microscope. And by counting number and measuring the diameter of lesions per leaf and variety (Ponmurugan et al, 2009;Uaciquete, 2013;Vasconcelos et al, 2018;Atsumi et al, 2017). Samples were directly used to characterize algae structures for each season.…”

“…Cephaleurosspecies are commonly referred to as a mandatory epiphyte, may also be parasitic, where haustoria are sometimes present within the tissues of the host plant (Ponmurugan et al, 2009). In studies on the Cephaleuros, morphological and sporange are commonly estimated (Vasconcelos et al, 2018). Therefore, the objective of this study was to carry out description of red rust disease of cashew and morphological characterization of his pathogen agent in Cameroon for the first time.…”

Red rust disease occurring in some fruits species in Cameroon

“…However, some emerging diseases such as red rust do not yet have an approved control method. Many Cephaleurus species have been associated with red rust in many countries and on several species: Cephaleurus virescens on Mangifera indica [9] in Brazil, Cephaleurus virescens on Swietenia sp. [10] in Brazil, Cephaleurus parasiticus on Camellia sinensis [11].…”