SRS6859872 SAMN15294446 410658 soil metagenome bioproject 639928 PRJNA639928 host Antarctic hair grass isolation_source rhizoplane collection_date 2018-01-03 geo_loc_name Antarctica lat_lon not collected BioSampleModel Metagenome or environmental SRS6859873 SAMN15294445 410658 soil metagenome bioproject 639928 PRJNA639928 host Antarctic hair grass isolation_source rhizosphere collection_date 2018-01-03 geo_loc_name Antarctica lat_lon not collected BioSampleModel Metagenome or environmental SRS6859874 SAMN15294447 410658 soil metagenome bioproject 639928 PRJNA639928 host Antarctic hair grass isolation_source root endosphere collection_date 2018-01-03 geo_loc_name Antarctica lat_lon not collected BioSampleModel Metagenome or environmental