Distribution and potential reservoir hosts of banana blood disease ( Ralstonia syzygii subsp. celebesensis ) in South Sulawesi, Indonesia
Year: 2026
Type: conference-paper
Abstract: Banana Blood Disease (BBD) is a bacterial wilt of banana, caused by Ralstonia syzygii subsp. celebesensis ( Rsc ), represents a substantial threat to banana production in Indonesia, particularly in South Sulawesi, where the disease was first discovered and their outbreaks have resulted in considerable economic losses. This study aimed to determine the distribution of BBD across South Sulawesi provinces during 2020 to 2024 and the reaction of some banana cultivars as well as potential reservoir hosts. Disease incidence was calculated from total infected plants divided by total banana plant in South Sulawesi. Rsc inosulum was prepared in 10 8 CFU/ml concentration. Stem inoculations were used for Musa cultivar, whereas spraying method were used for potential host. The results revealed that the incidence of BBD varies over time. The highest incidence of BBD in South Sulawesi was 20,49% in 2022, while the lowest incidence was in 2021, only 2.73%. Pare-pare regency showed the highest disease incidence in 2022 with 19.27%, while Palopo became a new area of concern with a rate of 6.71% in 2024. Among of 25 tested Musa cultivars confirmed that all the cultivars were susceptible, and no resistant cultivars were found. There are 7 species as non- Musa were found susceptible reservoirs of BBD, that may potentially play their role in pathogen survival. While Heliconia rostrata , an ornamental banana species, exhibits resistance to BBD.
Institution: Hasanuddin University
Language: English
Subfield: Plant Science
Domain: Life Sciences
Open Access status: diamond
OpenAlex ID: W7213469495