Cultivable endophytic bacteria from leaf bases of Agave tequilana and their role as plant growth promoters

Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]
Julia del C Martínez-RodríguezTetsuya Ogura

Abstract

Agave tequilana Weber var. 'Azul' is grown for the production of tequila, inulin and syrup. Diverse bacteria inhabit plant tissues and play a crucial role for plant health and growth. In this study culturable endophytic bacteria were extracted from leaf bases of 100 healthy Agave tequilana plants. In plant tissue bacteria occurred at mean population densities of 3 million CFU/g of fresh plant tissue. Three hundred endophytic strains were isolated and 16s rDNA sequences grouped the bacteria into eight different taxa that shared high homology with other known sequences. Bacterial endophytes were identified as Acinectobacter sp., A. baumanii, A. bereziniae, Cronobacter sakazakii, Enterobacter hormaechei, Bacillus sp. Klebsiella oxytoca, Pseudomonas sp., Enterococcus casseliflavus, Leuconostoc mesenteroides subsp. mesenteroides and Gluconobacter oxydans. Isolates were confirmed to be plant growth promoting bacteria (PGPB) by their capacities for nitrogen fixation, auxin production, phosphate solubilization, or antagonism against Fusarium oxysporum AC132. E. casseliflavus JM47 and K. oxytoca JM26 secreted the highest concentrations of IAA. The endophyte Acinectobacter sp. JM58 exhibited the maximum values for nitrogen fixation and p...Continue Reading

Citations

Nov 5, 2016·Genome Announcements·Tadayuki IwaseYoshimitsu Mizunoe
Jun 9, 2016·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Neyser De La Torre-RuizReiner Rincón-Rosales
Jul 28, 2019·Journal of the Science of Food and Agriculture·Angélica Bautista-CruzAurelio Báez-Pérez
Nov 10, 2020·Frontiers in Nutrition·Ibeth Peralta-GarcíaAgustín López Munguía
Feb 18, 2020·Ecotoxicology and Environmental Safety·Junjie DuYongning Wu

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BETA
KC461186
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Statgraphics
ClustalW
BLAST
MEGA

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