Pathogenesis, parasitism and mutualism in the trophic space of microbe–plant interactions

Newton, A. C.; Fitt, Bruce D.L.; Atkins, Simon D.; Walters, Dale R.; Daniell, Tim J.

doi:10.1016/j.tim.2010.06.002

Cited by 269 publications

(165 citation statements)

References 57 publications

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“…In general, there is growing consensus that only few interactive organismic dependencies can be easily categorized (Newton et al 2010a). Piriformospora indica and its host-dependent development is a good example to characterize the different steps functionally, as has been done under various experimental approaches.…”

Section: Transitions In Trophic Stages and Experimental Host Rangementioning

confidence: 99%

Enigmatic Sebacinales

Oberwinkler¹,

Riess²,

Bauer³

et al. 2013

Mycol Progress

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A historical retrospect and a taxonomic update will deal with Sebacina s.l. and s.str., Craterocolla, Efibulobasidium, Serendipita, Trem ell odendron, Trem ell oscypha, Tremellostereum, and Piriformospora, the Sebacinaceae, and the Sebacinales. Phylogenetic hypotheses for the order and subordinal taxa are discussed, including environmental sequence taxa. The cryptic biodiversity in Sebacinales is extensive but mostly unresolved with respect to the species involved.

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Section: Transitions In Trophic Stages and Experimental Host Rangementioning

confidence: 99%

Enigmatic Sebacinales

Oberwinkler¹,

Riess²,

Bauer³

et al. 2013

Mycol Progress

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“…PGPeB have also been implicated in enhancing the plant's resistance against pathogens through direct induction of the plant's defence system or production of antimicrobial compounds (Heydari and Pessarakli, 2010). Pathogenic and parasitic endophytic bacteria, on the other hand, cause plant disease and reduced fitness (Newton et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Impact of metagenomic DNA extraction procedures on the identifiable endophytic bacterial diversity in Sorghum bicolor (L. Moench)

Maropola

Ramond

Trindade

2015

Journal of Microbiological Methods

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Keywords:Metagenomic DNA extraction Endophytic bacteria Sorghum root and stem t-RFLP Pyrosequencing Culture-independent studies rely on the quantity and quality of the extracted environmental metagenomic DNA (mDNA). To fully access the plant tissue microbiome, the extracted plant mDNA should allow optimal PCR applications and the genetic content must be representative of the total microbial diversity. In this study, we evaluated the endophytic bacterial diversity retrieved using different mDNA extraction procedures. Metagenomic DNA from sorghum (Sorghum bicolor L. Moench) stem and root tissues were extracted using two classical DNA extraction protocols (CTAB-and SDS-based) and five commercial kits. The mDNA yields and quality as well as the reproducibility were compared. 16S rRNA gene terminal restriction fragment length polymorphism (t-RFLP) was used to assess the impact on endophytic bacterial community structures observed. Generally, the classical protocols obtained high mDNA yields from sorghum tissues; however, they were less reproducible than the commercial kits. Commercial kits retrieved higher quality mDNA, but with lower endophytic bacterial diversities compared to classical protocols. The SDS-based protocol enabled access to the highest sorghum endophytic diversities. Therefore, "SDS-extracted" sorghum root and stem microbiome diversities were analysed via 454 pyrosequencing, and this revealed that the two tissues harbour significantly different endophytic communities. Nevertheless, both communities are dominated by agriculturally important genera such as Microbacterium, Agrobacterium, Sphingobacterium, Herbaspirillum, Erwinia, Pseudomonas and Stenotrophomonas; which have previously been shown to play a role in plant growth promotion. This study shows that DNA extraction protocols introduce biases in culture-independent studies of environmental microbial communities by influencing the mDNA quality, which impacts the microbial diversity analyses and evaluation. Using the broad-spectrum SDSbased DNA extraction protocol allows the recovery of the most diverse endophytic communities associated with sorghum tissues and, as such, establishes a reliable basis for future study of endophytic communities.

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“…Interações envolvendo raízes de plantas na rizosfera incluem os tipos raiz-raiz, inseto-raiz, e microrganismo-raiz. A rizosfera representa um local altamente dinâmico para interações entre as raízes, micróbios patogênicos e benéficos no solo e invertebrados (NEWTON et al, 2010;BAIS et al, 2010;MARTINS et al, 2014).…”

Section: Interações Bióticas Na Rizosferaunclassified

Interações Bióticas Entre Actinobactérias E Rizóbios Em Solos Da Região Semiárida Brasileira

Cavalcante¹,

Martins²,

Martins³

2017

Enci Bio

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RESUMOExistem várias interações ocorrendo no solo que determinam as propriedades do mesmo como um meio para atividade e crescimento de plantas e microrganismos. Há diversos tipos diferentes de microrganismos na rizosfera interagindo com os outros organismos do solo e com as raízes das plantas. As actinobactérias são de ocorrência universal na natureza e são amplamente distribuídas em ambientes naturais. As bactérias diazotróficas, também chamadas de rizóbios, realizam o processo de fixação biológica do nitrogênio (FBN) sendo uma importante fonte de nitrogênio para o solo. Dados da literatura relatam antagonismo das actinobactérias sobre vários microrganismos do solo incluindo os rizóbios. As interações bióticas conduzem a processos ecológicos e evolutivos fundamentais, porém a sua intensidade, direção e frequência são sensíveis às mudanças climáticas. O semiárido brasileiro é uma região caracterizada por baixa precipitação anual, temperaturas elevadas e vegetação caducifólia. Os recursos nos solos dessa região são geralmente limitantes para os microrganismos, o que favorece a competição. PALAVRAS-CHAVE: Antagonismo, Coexistência, Microrganismos do solo BIOTIC INTERACTIONS BETWEEN ACTINOBACTERIAS AND RHIZOBIA IN SOILS OF THE BRAZILIAN SEMI-ARID REGIONABSTRACT There are several interactions occurring in the soil that determine its properties as a medium for the activity and growth of plants and microorganisms. There are different types of microorganisms in the rhizosphere interacting with other soil organisms and with plant roots. Actinobacteria universally occur in nature and are widely distributed in natural environments. Diazotrophic bacteria, also known as rhizobia, perform the biological nitrogen fixation process (BNF) being an important source of nitrogen for the soil. The scientific literature reports antagonism of actinobacteria on various soil

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Pathogenesis, parasitism and mutualism in the trophic space of microbe–plant interactions

Cited by 269 publications

References 57 publications

Enigmatic Sebacinales

Enigmatic Sebacinales

Impact of metagenomic DNA extraction procedures on the identifiable endophytic bacterial diversity in Sorghum bicolor (L. Moench)

Interações Bióticas Entre Actinobactérias E Rizóbios Em Solos Da Região Semiárida Brasileira

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