SRS20593305 SAMN40125766 717931 groundwater metagenome 4-hydroxychlorothalonil-dehalogenating enrichment metagenome bioproject 781738 PRJNA781738 host missing isolation_source groundwater collection_date missing geo_loc_name China:Nanjing lat_lon 32.06 N 118.79 E tmp 1 BioSampleModel Metagenome or environmental