Rhizosphere microbiomes of potato cultivated in the High Andes show stable and dynamic core microbiomes with different responses to plant development.

摘要: The rhizosphere hosts a rich microflora supporting plant nutrition and health. We examined bacterial microbiota of Solanum tuberosum grown in its center origin, the Central Andean Highlands, at different vegetation stages sites altitudes ranging from 3245 to 4070 m.a.s.l., differing soil characteristics, climate agricultural practices by 454 sequence analysis 16S rRNA genes. observed that taxonomic composition bacteria repeatedly occurring particular development was almost unaffected highly diverse environmental conditions. A detailed statistical on operational unit (OTU) level, representing species, revealed complex community structure rhizosphere. identified an opportunistic microbiome which comprises OTUs occur randomly or under specific In contrast, core members were found all sites. ‘stable’ component consisted few ubiquitous continuously abundant samples stages, whereas ‘dynamic’ comprised enriched stages.