Relação de fungos micorrízicos arbusculares e rizobactérias no crescimento de mudas de oliveira (&lt;i&gt;Olea europaea&lt;/i&gt;)

Costa, Samara Maria Lopes; Melloni, Rogério

doi:10.5902/1980509829936

Cited by 8 publications

(10 citation statements)

References 20 publications

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“…Acaulospora sp. is inoculated in olive tree seedlings as AMF (Costa and Melloni, 2019). Other authors have found increases in AMF diversity in low-input agriculture and attributed such increases to crop rotations rather than to organic fertilization (Hijri et al, 2006).…”

Section: Response Of Fungal Taxamentioning

confidence: 99%

Impact of Olive Saplings and Organic Amendments on Soil Microbial Communities and Effects of Mineral Fertilization

et al. 2021

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Plant communities and fertilization may have an impact on soil microbiome. Most commercial olive trees are minerally fertilized, while this practice is being replaced by the use of organic amendments. Organic amendments can both fertilize and promote plant growth-promoting organisms. Our aims were (i) to describe the changes in soil bacterial and fungal communities induced by the presence of young olive trees and their interaction with organic amendments and (ii) to compare the effects of mineral and organic fertilization. We set up two parallel experiments in pots using a previously homogenized soil collected from a commercial olive orchard: in the first one, we grew olive saplings in unamended and organically amended soils with two distinct composts and compared these two soils incubated without a plant, while in the second experiment, we comparatively tested the effects of organic and mineral fertilization. OTUs and the relative abundances of bacterial and fungal genera and phyla were analyzed by 16S rRNA and ITS1 gene amplicon using high-throughput sequencing. Basal respiration and substrate-induced respiration were measured by MicroRespTM. The effects of the different treatments were analyzed in all phyla and in the 100 most abundant genera. The presence of olive saplings increased substrate-induced respiration and bacterial and fungal richness and diversity. Organic amendments greatly affected both bacterial and fungal phyla and increased bacterial richness while not affecting fungal richness. Mineral fertilization increased the relative abundance of the less metabolically active bacterial phyla (Actinobacteria and Firmicutes), while it reduced the most metabolically active phylum, Bacteroidetes. Mineral fertilization increased the relative abundance of three N2-fixing Actinobacteria genera, while organic fertilization only increased one genus of Proteobacteria. In organically and minerally fertilized soils, high basal respiration rates were associated with low fungal diversity. Basidiomycota and Chytridiomycota relative abundances positively correlated with basal respiration and substrate-induced respiration, while Ascomycota correlated negatively. Indeed, the Ascomycota phyla comprised most of the fungal genera decreased by organic amendments. The symbiotrophic phylum Glomeromycota did not correlate with any of the C sources. The relative abundance of this phylum was promoted by the presence of plants but decreased when amending soils with composts.

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Section: Response Of Fungal Taxamentioning

confidence: 99%

Impact of Olive Saplings and Organic Amendments on Soil Microbial Communities and Effects of Mineral Fertilization

et al. 2021

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“…The same bacterial strains induced rooting in 'Hojiblanca' but not in 'Arbequina' and 'Picual' [36]. The same combined treatment (PGPR and AMF) applied on 'Arbequina' and 'Maria da Fé' cultivars promoted high growth (height and diameter), fresh root, and shoot dry matter production in 'Arbequina' and improvement of nutritional status (higher nitrogen contents in the shoot) in 'Maria da Fé' [40]. Boutaj et al [32], who investigated the inoculation of the olive cultivar 'Picholine Marocaine' with an autochthonous mycorrhizal inoculum, and with the commercial pure strain Glomus irregulare, found that root colonization and mycorrhizal frequency and intensity were greatly improved in both the autochthonous consortium (100% and 58.91%, respectively) and Glomus irregulare (97.77% and 57.77%, respectively) compared to the control plants.…”

Section: Inoculum-cultivar Specificitymentioning

confidence: 92%

“…and AMF strains (G. mosseae NRC31 Glomus fasciculatum NRC15) stimulated plant growth and enhanced the nutritional status of the olive seedlings [10]. Costa and Melloni [40] also showed that the co-inoculation of PGPR (Pseudomonas sp. and Paenibacillus sp.)…”

Section: Beneficial Microorganisms and Olive Tree's Growth Physiologmentioning

confidence: 99%

The Role of Microbial Inoculants on Plant Protection, Growth Stimulation, and Crop Productivity of the Olive Tree (Olea europea L.)

Bizos

Papatheodorou

Chatzistathis³

et al. 2020

Plants

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The olive tree (Olea europaea L.) is an emblematic, long-living fruit tree species of profound economic and environmental importance. This study is a literature review of articles published during the last 10 years about the role of beneficial microbes [Arbuscular Mycorrhizal Fungi (AMF), Plant Growth Promoting Rhizobacteria (PGPR), Plant Growth Promoting Fungi (PGPF), and Endophytes] on olive tree plant growth and productivity, pathogen control, and alleviation from abiotic stress. The majority of the studies examined the AMF effect using mostly Rhizophagus irregularis and Glomus mosseae species. These AMF species stimulate the root growth improving the resistance of olive plants to environmental and transplantation stresses. Among the PGPR, the nitrogen-fixing bacteria Azospirillum sp. and potassium- and phosphorous-solubilizing Bacillus sp. species were studied extensively. These PGPR species were combined with proper cultural practices and improved considerably olive plant’s growth. The endophytic bacterial species Pseudomonas fluorescens and Bacillus sp., as well as the fungal species Trichoderma sp. were identified as the most effective biocontrol agents against olive tree diseases (e.g., Verticillium wilt, root rot, and anthracnose).

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“…Esse método consiste na imersão da semente em uma solução com microrganismo de concentração conhecida (Romeiro, 2007;Lopes et al, 2018;Costa & Melloni, 2019). Os microrganismos ao colonizar as sementes, são capazes de sintetizar giberelina, um fitormônio que acelera a germinação (Bhat et al, 2019); e produzir compostos antimicrobianos, protegendo as sementes contra fitopatógenos (Souza et al, 2015;Gautam, 2021).…”

Section: Inoculação Na Sementeunclassified

“…O uso desse método é eficaz em alface quando inoculada com Bacillus pumilus (Bernardino et al, 2018), Pseudomonas fluorescens e Burkholderia pyrrocinia (Cardoso et al, 2019); em oliveira inoculada com Pseudomonas sp. e Paenibacillus (Costa & Melloni, 2019); e em arroz tratado com Azospirillum brasilense (Sales et al, 2021). Segundo Cortivo et al, (2017) o trigo apresentou maior crescimento e produtividade quando tratado tanto via semente, quanto via foliar com Azospirillum spp., Azoarcus spp.…”

Section: Inoculação Na Sementeunclassified

Biotecnologia microbiana: inoculação, mecanismos de ação e benefícios às plantas

Lopes

Santiago

Silva

et al. 2021

RSD

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O uso de microrganismos está sendo aderido globalmente como uma alternativa biotecnológica para otimizar a produtividade vegetal de forma sustentável, atenuando o uso de produtos químicos e os impactos ambientais. Inoculantes microbianos, como as rizobactérias (Plant growth-promoting rizhobacteria - PGPR), micorrizas e fungos, combinados ou separados, podem ser inoculados em sementes, raízes, solo ou folhas. Microrganismos promotores do crescimento de plantas (Plant growth-promoting microbes - PGPM) atuam de forma direta como bioestimulantes e biofertilizantes; e de forma indireta como agentes de biocontrole. Essa biotecnologia microbiana é benéfica pois acelera o crescimento vegetal, incrementa a produtividade e a qualidade nutricional dos alimentos, além de aumentar a resistência das plantas contra estresses bióticos e abióticos. Portanto, considerando o potencial dos microrganismos como biopromotores de crescimento vegetal, conhecer sobre a interação desses com as plantas resultará em maior sucesso do uso da biotecnologia microbiana. Assim, essa revisão tem por objetivo abordar como os métodos de inoculação podem interferir no efeito benéfico do PGPM às plantas. Além de elucidar quais os mecanismos e benefícios do uso da biotecnologia microbiana ao vegetal.

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Relação de fungos micorrízicos arbusculares e rizobactérias no crescimento de mudas de oliveira (<i>Olea europaea</i>)

Cited by 8 publications

References 20 publications

Impact of Olive Saplings and Organic Amendments on Soil Microbial Communities and Effects of Mineral Fertilization

Impact of Olive Saplings and Organic Amendments on Soil Microbial Communities and Effects of Mineral Fertilization

The Role of Microbial Inoculants on Plant Protection, Growth Stimulation, and Crop Productivity of the Olive Tree (Olea europea L.)

Biotecnologia microbiana: inoculação, mecanismos de ação e benefícios às plantas

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