Susceptibility of the three dragon fruit species to stem canker and growth inhibition of Neoscytalidium dimidiatum by chemicals

Reduction of Selenicereus stem cuttings weight by fungal plant pathogens during storage

“…2020b); necrotic brown lesion caused by Epicoccum sorghinum (Taguiam et al. 2020c); and stem canker caused by Neoscytalidium dimidiatum (Taguiam et al., 2020a) have been reported causing mummified stems on dragon fruit, which often reduce fruit yield. However, there are no studies on stem cuttings’ weight loss due to pathogens.…”

“…Neoscytalidium dimidiatum MBDF0016C, Nigrospora sphaerica MBDF0016B, and Epicoccum. sorghinum MBDF0024A cultures used in this study were isolated from dragon fruit stems showing stem canker (Taguiam et al., 2020a) (Figure 1), reddish‐brown spot (Taguiam et al. 2020b) (Figure 1), and necrotic lesion/spot (Taguiam et al.…”

“…monacanthus stems, obtained from the IPB dragon fruit germplasm, were surface‐sterilized following the methodology by Taguiam et al. (2020a). Stems were placed in 10% NaClO (v/v) for 3 min, rinsed three times in sterile distilled water for 1 min, and blot dried in sterile tissue paper.…”

“…At 28 dpi, only N. dimidiatum significantly reduced stem fresh weight compared to the other two pathogens at cooler conditions (19–25°C) (Table 1). Symptoms of stem canker ( N. dimidiatum ) include the formation of sunken, necrotic brown lesions, often with a yellow halo, which also causes yellowing of the stem (Figure 1) (Taguiam et al., 2020a). Epicoccum sorghinum causes necrotic lesions (Figure 1b) as early as three dpi (Taguiam et al.…”

Morphological and molecular studies of a rare mucoralean species causing flower rot in Hylocereus polyrhizus

“…The expansion of planting areas and production of dragon fruit have also resulted in the occurrence of a number of diseases that negatively affect the yield, such as anthracnose caused by Colletotrichum spp. (Ali et al, 2013;Guo et al, 2014), fruit rot caused by Bipolaris cactivora (Oeurn et al, 2015), and stem canker caused by Neoscytalidium dimidiatum (Mohd et al, 2013;Taguiam et al, 2020). In Thailand, little is known about the dragon fruits introduced into the country; however, its cultivation has helped provide additional income to farmers.…”