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Bacilio-Jiménez, Macario; Aguilar-Flores, Sara; Ventura-Zapata, Elsa; Pérez-Campos, Eduardo; Bouquelet, Stéphane; Zenteno, Edgar

doi:10.1023/a:1022888900465

Cited by 254 publications

(33 citation statements)

References 32 publications

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“…They are also the vehicle of a variety of pathogens and beneficial bacteria [16], whose growth occurs when seeds germinate. Such microbial communities are additionally [47,48] enriched by the microorganisms that soils frequently provide. The study of bacteria within tomato seeds by metagenomic analysis and by isolating culturable endophytes showed that the number of bacterial species in the seeds of both cultivars of tomato was rather low, as in other plant species [49][50][51][52].…”

Section: Discussionmentioning

confidence: 99%

Microbial Endophytes that Live within the Seeds of Two Tomato Hybrids Cultivated in Argentina

et al. 2018

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Tomato (Solanum lycopersicum L.) is probably the most important vegetable consumed around the world, and like other produce is affected by stresses and diseases that reduce the yield and production. The purpose of this work was to study the phytobiome of the tomato seeds of two hybrids in order to understand first of all whether tomato cultivars host similar groups of organisms, as well as their effect on the community structure, particularly of those microbes with the potential to promote growth and/or control plant pathogens. Different cultivars of tomato (genotypes) host significantly different endophytic communities, which is also reflected at the order level. These communities are particularly rich in spore-forming bacteria that have the ability either to promote plant growth or synthetize antimicrobial compounds that deter plant pathogens. We conclude that the seeds of the tomato cultivars Elpida and Silverio are sources of endophytic bacteria capable of synthetizing antifungal substances that could potentially be used for biocontrol against plant-pathogenic fungi.

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Section: Discussionmentioning

confidence: 99%

Microbial Endophytes that Live within the Seeds of Two Tomato Hybrids Cultivated in Argentina

et al. 2018

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“…The identification of glucose and fructose as major components of root exudates (6,28,29) prompted us to test the uptake of these sugars in wild type and mutant plants under high salinity conditions (Fig. 6, A and B).…”

Section: Volume 286 • Number 50 • December 16 2011mentioning

confidence: 99%

“…For example, root exudates are important sources of nutrients for microbes in the rhizosphere and can also participate in the early colonization of roots by microbes through the induction of chemotactic responses of microbes in the rhizosphere. In fact, a chemotactic response has been demonstrated by endophytic bacteria with rice root exudates that contain several carbohydrates and amino acids (6). Moreover, Arabidopsis roots export malic acid to the rhizosphere upon bacterial infection, and malic acid recruits a beneficial microbe to the roots that can induce a systemic resistance to infection in leaves (7).…”

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confidence: 99%

Monosaccharide Absorption Activity of Arabidopsis Roots Depends on Expression Profiles of Transporter Genes under High Salinity Conditions

Yamada

Kanai

Osakabe

et al. 2011

Journal of Biological Chemistry

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Background: Transporters to absorb monosaccharides into Arabidopsis roots are poorly understood. Results: stp1 and stp13 mutants are insensitive to exogenous monosaccharides. Monosaccharide uptake by STP1 and STP13 was affected by environmental stresses. Conclusion: Contribution of STP13 to monosaccharide uptake becomes higher under high salinity conditions in which STP13 is induced. Significance: The expression profiles of transporter genes under environmental stresses influence monosaccharide uptake.

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“…Rice roots were kept in half-strength Hoagland's solution [18] containing 50 mg/l nalidixic acid to avoid development of microorganisms. Rice plants were put on the growth chamber with constant temperature of 26˚C, 12-h day, and 70% relative humidity [19] for 14 days, adding nutrient solution periodically, under axenic conditions [2] (Figure 2). The components of Hoagland's solution were presented in Table 1.…”

Section: Sterilization and Germination Of Rice Seeds And Cultivationmentioning

confidence: 99%

“…The rhizosphere is a natural microbial environment in which the activity of the microorganisms is maintained at a high level owing to a continuous release of organic substances by the plant roots. Simulation of microorganisms present in the rhizosphere seems to be due to the presence of organic compounds released by the roots and representing up to 20% plant dry weight [2]. This material includes flanked cells of root cap, mucellage and soluble and non soluble exudates, which may contain free amino acids, proteins, carbohydrstes, alcohols, vitamins, or hormones [3].…”

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confidence: 99%

Transcriptional Analysis of <i>Pseudomonas stutzeri</i> A1501 Associated with Host Rice

Alam¹,

Zhang²,

Yan³

et al. 2016

AiM

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Pseudomonas stutzeri A1501, associative and endophytic nitrogen-fixing bacterium showed the capacity of colonization in the rice roots and considered as the good colonizer in the rice plant. The experiment was conducted to study the expression of genes potentiality relevant to the association of nitrogen fixing Pseudomonas stutzeri with host rice and reveal the molecular mechanism by which underlying interaction between bacteria and host rice. The bacteria were shown to be uniformly distributed on the rhizoplane of the root and the density of bacteria was found at the intercellular junction and micro colony developed on the surface of the epidermal cells and on the cellular junctions. Root exudates of rice were the major components of carbon and energy sources for bacteria. RT-PCR analyses of pilK, metE, rpoN and fdhE genes expression of P. stutzeri A1501 were performed at positive and negative (control) conditions. After 1 h, it was found that pilK, metE and rpoN transcription were increased 5.7, 6.4 and 3.4-fold, respectively, whereas in the fdhE gene has no expression. Consequently, after 4 h pilk, fdhE, metE and rpoN were decreased −1.9, −4.4, −0.2 and −0.8-fold, respectively. The gene pilK, expression was up-regulation after 1 h and down-regulation after 4 h that has twitching motility to convey the bacterial cell to point of attachment in to host plant. The gene expressions of the bacteria, pilK, metE, rpoN and fdhE were upand down-regulated during the influence of root exudates which regulated the colonization of bacteria during plant-microbe interaction.

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Cited by 254 publications

References 32 publications

Microbial Endophytes that Live within the Seeds of Two Tomato Hybrids Cultivated in Argentina

Microbial Endophytes that Live within the Seeds of Two Tomato Hybrids Cultivated in Argentina

Monosaccharide Absorption Activity of Arabidopsis Roots Depends on Expression Profiles of Transporter Genes under High Salinity Conditions

Transcriptional Analysis of <i>Pseudomonas stutzeri</i> A1501 Associated with Host Rice

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Untitled

Cited by 254 publications

References 32 publications

Microbial Endophytes that Live within the Seeds of Two Tomato Hybrids Cultivated in Argentina

Microbial Endophytes that Live within the Seeds of Two Tomato Hybrids Cultivated in Argentina

Monosaccharide Absorption Activity of Arabidopsis Roots Depends on Expression Profiles of Transporter Genes under High Salinity Conditions

Transcriptional Analysis of &lt;i&gt;Pseudomonas stutzeri&lt;/i&gt; A1501 Associated with Host Rice

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Transcriptional Analysis of <i>Pseudomonas stutzeri</i> A1501 Associated with Host Rice