Characterization of cultivable putative endophytic plant growth promoting bacteria associated with maize cultivars (Zea mays L.) and their inoculation effects in vitro

Montañez, Adriana; Blanco, Andrea Rodríguez; Barlocco, Claudia; Beracochea, Martín; Sicardi, Margarita

doi:10.1016/j.apsoil.2012.02.009

Cited by 155 publications

(63 citation statements)

References 53 publications

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“…Species richness and environmental complexity are proved to increase ecosystem functioning [17]. Meanwhile, endophytes play an important role in ecological community by protection and survival value to the plants, such as enhancement of stress-, insect-and diseaseresistance, and growth promotion [11,14,20,21,28]. Therefore, we presume that the high richness and diversity of endophytic bacteria in R-R-MV are beneficial to the growth and productivity of rice.…”

Section: Effects Of Various Cropping Systems On the Compositions And mentioning

confidence: 99%

“…The culture-dependent study proved that the Herbaspirillum was the common dominant colony in the two treatments. Previous studies had proved the Herbaspirillum as regular endophytic bacteria in plants such as rice [26], sugarcane [23], and corn [21]. Herbaspirillum was also conductive to fix nitrogen and promote plant growth [5], but it was not the dominant endophytic colony.…”

Section: Effects Of Various Cropping Systems On the Compositions And mentioning

confidence: 99%

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Long-Term Rice and Green Manure Rotation Alters the Endophytic Bacterial Communities of the Rice Root

et al. 2013

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This study focuses on the effects of long-term rice rotated with milk vetch being as green manure on the composition of bacteria in rice roots. The endophytic bacterial communities in rice roots of the rice-rice-milk vetch (R-R-MV) and the rice-rice-winter fallow (R-R-WF) crop rotations with a 28-year research history were investigated using combined culture-dependent and culture-independent methods. It was found that the endophytic bacterial population in rice roots with the green manure was significantly higher than that of without it. There were 169 and 77 strains of endophytic bacteria that were isolated from rice roots of the R-R-MV and the R-R-WF, respectively. The 16S rRNA gene analysis shows that the 77 R-R-WF bacteria belong to 15 species of 14 genera while the other 169 R-R-MV bacteria belong to 21 species of 19 genera, in which Herbaspirillum and Cedecea were two mutually dominant populations and Burkholderia, Pseudomonas, Sphingomonas, and Pantoea accounted for large proportions of the endophytic bacteria in rice roots through R-R-MV rotation. The analysis of 16S rDNA clone libraries showed that the Shannon-Weaver diversity index of endophytic bacteria in R-R-MV approximates that in R-R-WF rotation, whereas the richness indexes of Chao 1 and ACE in R-R-MV rotation system were significantly higher than those in R-R-WF rotation. The diversity of endophytic bacteria was richer in R-R-MV. Both the culture-dependent and the cultureindependent method revealed significant effect of long-term different tillage systems on the microbial community.

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Section: Effects Of Various Cropping Systems On the Compositions And mentioning

confidence: 99%

Section: Effects Of Various Cropping Systems On the Compositions And mentioning

confidence: 99%

Long-Term Rice and Green Manure Rotation Alters the Endophytic Bacterial Communities of the Rice Root

et al. 2013

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“…Studies of plant/microorganism interactions and the role of these microorganisms in plants have indicated their utility for a large number of applications, such as the biological control of numerous diseases (Zheng et al, 2011;Ceballos et al, 2012), promotion of plant growth Coombs et al, 2004;Montañez et al, 2012), and bioremediation of contaminated environments (Ma et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Endophytic bacteria from banana cultivars and their antifungal activity

Souza¹,

Cruz²,

Sousa³

et al. 2014

Genet. Mol. Res.

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ABSTRACT. Endophytic microorganisms consist of fungi, bacteria, and actinomycetes that play important roles in the process of plant adaptation to the environment. Currently, the natural associations between microorganisms and plant species are being explored for a large number of biotechnological applications. In this study, 122 endophytic bacteria were isolated from 5 cultivars of Musa spp from the state of Amazonas (Brazil). Four strains were selected because they exhibited antagonistic activities against Fusarium oxysporum f. sp cubense and Colletotrichum guaranicola, with inhibitions ranging from 19 to 30% and 27 to 35%, respectively. Phylogenetic analysis of the 16S rDNA regions of these bacteria with antifungal activity showed that they are phylogenetically related to 3 different species of Bacillus -B. amyloliquefaciens, B. subtilis subsp subtilis, and B. thuringiensis.

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“…Furthermore, it has been shown that different species are commonly found on multiple plant tissues and there are some with a preference for the leaves. 15,19,44 This shows that there is a correlation between endophytes and plant parts harbouring them. In the present study, Bt and non-Bt maize cultivars harboured unrelated genera that are commonly found as maize endophytes such as Pantoea, Bacillus, Enterobacter, Serratia, Yersinia, Stenotrophomonas, Pseudomonas and Acinetobacter (Table 1).…”

Section: Discussionmentioning

confidence: 99%

Community composition and functions of endophytic bacteria of Bt maize

et al. 2018

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We investigated the potential effects of genetic modification of Bt maize on the community composition and functions of bacterial endophytes associated with transgenic maize (Bt MON 810) in comparison with its isogenic parental line at two developmental stages. Bacterial isolates were obtained from transgenic (Bt) and non-transgenic (non-Bt) maize at 50- and 90-day-old developmental stages. Isolated bacterial endophytes were screened for their capabilities in phosphate solubilisation, nitrogen fixation, production of antifungal metabolites and production of indole acetic acid. After molecular identification, 60 isolates were obtained and clustered into 19 and 18 operational taxonomic units from 50- and 90-day-old maize, respectively. The isolates belonged to the genera Bacillus, Pantoea, Serratia, Yersinia, Enterobacter, Pseudomonas, Acinetobacter and Stenotrophomonas. Functional attributes and diversity of the isolated endophytes at both developmental stages were not significantly different for both maize varieties. However, functional attributes were significantly affected by plant growth stage. Isolates from younger plants were more efficient producers of indole acetic acid, but exhibited little or no capabilities for nitrogen fixation, phosphate solubilisation and antifungal activity in both maize genotypes. Based on these outcomes, Bt modification in maize does not seem to affect the community composition or functional attributes of bacterial endophytes. Significance: • Bt modification in maize does not affect the ecological guild or functional attributes of cultivable bacterial endophytes.

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Characterization of cultivable putative endophytic plant growth promoting bacteria associated with maize cultivars (Zea mays L.) and their inoculation effects in vitro

Cited by 155 publications

References 53 publications

Long-Term Rice and Green Manure Rotation Alters the Endophytic Bacterial Communities of the Rice Root

Long-Term Rice and Green Manure Rotation Alters the Endophytic Bacterial Communities of the Rice Root

Endophytic bacteria from banana cultivars and their antifungal activity

Community composition and functions of endophytic bacteria of Bt maize

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