Journal
PROBIOTICS AND ANTIMICROBIAL PROTEINS
Volume 10, Issue 3, Pages 478-484Publisher
SPRINGER
DOI: 10.1007/s12602-017-9298-2
Keywords
Aspergillus; Bacillus; Endophyte; Maize; Plant probiotics
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Selection for probiotic candidates by in vivo experimental trials is time and labor consuming; more informed strategy is needed to select successful probiotic candidates. The aim of the study was to elucidate the microbial taxa transmitted from maize seeds to seedlings during the germination process of maize and their probiotic effects. The bacterial and fungal taxa in kernel germs and sprouts were analyzed by Illumina-based sequencing. The sprouts contained more diverse fungi than those in germs. The bacterial species (OTUs) declined with the germination from germs to the sprouts. However, the endophytic fungal diversity increased during the germination process. Seed-borne dominant bacterial genera Bacillus, Halomonas, and Shewanella and dominant fungal genera Aspergillus were also detected in sprouts. The spore-forming bacteria BS3 isolated directly from sprouts could promote growth of maize seedling and resistance to F. verticillioides under F. verticillioides-infested soils. The results suggested that maize contained core bacterial and fungal taxa during the development from seeds to sprouts, and the core endophytes showed more intimate correlation with host plants than did other microbial taxa. Illumina-based sequence analysis is feasible to guide probiotic candidate selection and isolation.
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