Also known as Drechslera cactivora, this fungus has been reported causing fruit rot on Hylocereus undatus (white-fleshed pitahaya).
The initial symptoms of the disease, appearing two to three days after inoculation, are yellowish lesions that are water soaked, which progress to a brown color.
[4] Once the conidia infect the petals they do not start to cause any visible symptoms until the fruit begins to grow and ripen within the flower.
[6][7] The recommended cultural practices to combat Bipolaris rot are to limit canopy wetness and to maintain a sanitized field.
[7] This is reflected in the countries and regions where B. cactivora is reportedly found, namely Florida, Vietnam, Japan, Korea, Israel, and China.
[6] Spread of the fungus is mediated by wind, irrigation, and rain,[7] so these conditions are helpful but not entirely necessary for fungal growth.
Plants that are grown very closely together may similarly have issues with this fungus, as they will make a wet, humid microclimate that is conducive to the growth of B. cactivora.
[2] On average inoculated plants took four to five days to start exhibiting symptoms regardless of if the fruit stem or seedling was infected.