Isolation and selection of endophytic spore-forming bacteria with plant growth promoting properties isolated from Ilex paraguariensis St. Hil. (yerba mate)
Document title: Isolation and selection of endophytic spore-forming bacteria with plant growth promoting properties isolated from Ilex paraguariensis St. Hil. (yerba mate)
Journal: Anais da Academia Brasileira de Ciencias
Database: PERIÓDICA
System number: 000436153
ISSN: 0001-3765
Authors: 1
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Institutions: 1Universidad Nacional de Misiones, Instituto de Biotecnología Misiones "Dra. María Ebe Reca", Posadas, Misiones. Argentina
Year:
Volumen: 92
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract Yerba mate (Ilex paraguariensis St. Hil.) is a species native to the subtropical regions of South America. Despite being an important crop for the region, there are few studies on the use of microorganisms to improve the growth of seedlings in the nursery stage. The objective of this study was to isolate spore-forming endophytic bacteria with plant growth promoting properties associated with yerba mate seedlings and determine their phytobeneficial effect under controlled laboratory conditions. Isolates were selected based on their sporulation capacity and evaluated for in vitro plant growth promoting properties (nitrogen fixation, phosphate solubilization, production of siderophores and synthesis of indolic compounds). Yerba mate seedlings were inoculated with the most promising isolates, which were identified via analyses of the sequence of their 16S rDNA gene as Bacillus circulans (12RS3) and Bacillus altitudinis (19RS3, T5S-T4). After 120 days plants showed higher root dry weight when inoculated with isolate 19RS3 and higher shoot dry weight with 19RS3 and T5S-T4. In conclusion, further studies to determine the ability of these isolates to adapt to the climatic conditions and to survive amidst the native soil microflora in yerba mate cultivated native soils, will be crucial for developing such strains as biofertilizer
Disciplines: Agrociencias,
Biología
Keyword: Microbiología,
Angiospermas,
Bacterias endofíticas,
Biofertilizantes,
Crecimiento radicular,
Plántulas,
Ilex paraguariensis,
Aquifoliaceae,
Bacillus altitudinis,
Bacillus circulans
Keyword: Microbiology,
Angiosperms,
Endophytic bacteria,
Biofertilizers,
Root growth,
Seedlings,
Ilex paraguariensis,
Aquifoliaceae,
Bacillus altitudinis,
Bacillus circulans
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