disease distributiongeographical distributionleavesnew geographic recordsplant diseasesplant pathogenic bacteriaplant pathogensstemssweet potatoessymptomsDickeyaDickeya chrysanthemiIpomoea batatasEast AsiaAsiaDeveloping CountriesEnterobacteriaceaeEnterobacterialesGammaproteobacteriaProteobacteriaBacteriabacteriumprokaryotesDickeyaCentral Southern ChinaChinaIpomoeaConvolvulaceaeSolanalesdicotyledonsangiospermsSpermatophytaplantseukaryotes.