Bacterial Endophytes: Diversity, Functional Importance, and Potential for Manipulation

Tosi, Micaela; Gaiero, Jonathan R.; Linton, Nicola F.; Mafa-Attoye, Tolulope; Castillo, Anibal H; Dunfield, Kari E.

doi:10.1007/978-981-15-6125-2_1

Cited by 14 publications

(14 citation statements)

References 343 publications

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“…Although DNA fingerprinting showed greater pseudomonads in tomato roots, the contrasting results in commercial production field to controlled environments was not surprising (see reviews by Mitter et al (2021) and Tosi et al (2021)). There was no evidence to suggest a detrimental effect of this treatment in commercial tomato fields.…”

Section: Discussionmentioning

confidence: 99%

“…This result was consistent with other research evaluating the introduction of microbes as biocontrol products in the field (Marahaj et al 2018) and greenhouse (Giotis et al, Jack et al (2011) reported that a bacterial community introduced via transplant media colonized roots at rates multiple times greater than indigenous soil taxa. However, the success of induced or introduced microbial species/communities depends on specific plant species and soil environment (Tosi et al 2021), and reflects the "rhizosphere buffering" theory (Weller et al, 2002). Refinement and standardization of inoculation procedures are needed (Tosi et al 2021) and may enhance the applicability of microbial treatments to suppress pathogens.…”

Section: Evidence Of Pathogen Suppression With Amendments But Not With Pseudomonad Transplant Treatmentmentioning

confidence: 99%

“…However, the success of induced or introduced microbial species/communities depends on specific plant species and soil environment (Tosi et al 2021), and reflects the "rhizosphere buffering" theory (Weller et al, 2002). Refinement and standardization of inoculation procedures are needed (Tosi et al 2021) and may enhance the applicability of microbial treatments to suppress pathogens.…”

Section: Evidence Of Pathogen Suppression With Amendments But Not With Pseudomonad Transplant Treatmentmentioning

confidence: 99%

“…Organic amendments such as manure and compost have diverse microbial populations (Bailey and Lazarovits, 2003;Perez-Piqueres et al, 2006;Jack et al, 2011) and their incorporation into soil and subsequent establishment in the rhizosphere may act to suppress plant pathogen development and colonization of plant roots (Litterick et al 2004;Deng et al 2020). Irrespective of the source of introduced or induced microorganisms (i.e., applied as a commercial biocontrol product, a root drench, or present in organic amendments), the survival and colonization in the rhizosphere and/or root is a key factor for efficacy (Romano et al 2020;Mitter et al 2021;Tosi et al 2021). Maintaining root health is critical to enhancing primary productivity (Cook et al, 1986).…”

Section: Possible Mechanisms Of Actionmentioning

confidence: 99%

“…While organic amendments can broadly alter soil physical and chemical properties as well as microbial communities, an alternative approach may be to manipulate rhizosphere communities directly. It is hypothesized that by inoculating plant roots with disease-suppressive microorganisms before transplanting into the field, these biocontrol microbes will be able to colonize the rhizosphere or endosphere, preventing particular pathogen colonization and mitigate plant disease (Mitter et al 2021;Tosi et al 2021). Application of microbial cultures such as Trichoderma spp.…”

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confidence: 99%

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Managing tomato vine decline with soil amendments and transplant treatments: fruit yield, quality, and plant-associated microbial communities

Eerd

Zhou

Turnbull³

et al. 2021

Can. J. Plant Sci.

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Tomato vine decline (TVD) disease complex results in fruit yield loss, but what soil management strategies might mitigate it? In commercial fields with a history of TVD, five approaches (soil organic amendments and transplant treatments) were evaluated for their impact on fruit yield, fruit quality and microbial abundance or diversity at four site-years. One site-year had very high TVD pressure and high variability with no yield differences, thus efforts focused on the remaining site-years. Marketable yield was not different among treatments but numerically followed a trend similar to total yield. Amending soil with poultry manure delayed maturity (i.e., increased proportion of green fruit) and had the greatest total yield increases of 17.2%, congruent with decreased abundance of root pathogens (Verticillium dahliae, Rhizopicnis vagum). Microbial DNA fingerprinting data of rhizospheres, roots and/or stems suggested treatments did not significantly shift the total diversity fungal nor bacterial populations, but the aforementioned pathogen loads were reduced with the application of organic amendments relative to the untreated control. While drenching tomato transplants with pseudomonad culture increased their presence in roots, pathogen load was not reduced relative to the untreated control. Overall, these results show that soil organic amendments were able to improve tomato total yield in two of four site-years without reducing fruit quality (i.e., soluble solids, pH, colour), perhaps, in part, due to their ability to suppress specific root pathogens in commercial fields.

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Section: Discussionmentioning

confidence: 99%

Section: Evidence Of Pathogen Suppression With Amendments But Not With Pseudomonad Transplant Treatmentmentioning

confidence: 99%

Section: Evidence Of Pathogen Suppression With Amendments But Not With Pseudomonad Transplant Treatmentmentioning

confidence: 99%

Section: Possible Mechanisms Of Actionmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Managing tomato vine decline with soil amendments and transplant treatments: fruit yield, quality, and plant-associated microbial communities

Eerd

Zhou

Turnbull³

et al. 2021

Can. J. Plant Sci.

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Molecular Mechanism of Plant–Bacteria Interactions

Mattedi,

Farda,

Djebaili

et al. 2024

Sustainable Plant Nutrition in a Changing World

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Diversity of cultivable endophytic bacteria associated with halophytes in Xinjiang of China and their plant beneficial traits

Gao

Liu

et al. 2021

J. Arid Land

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Endophytic bacteria from halophytes have a wide range of application prospects in various fields, such as plant growth-promoting, biocontrol activity and stress resistance. The current study aimed to identify cultivable endophytic bacteria associated with halophytes grown in the salt-affected soil in Xinjiang Uygur Autonomous Region, China and to evaluate their plant beneficial traits and enzyme-producing activity. Endophytic bacteria were isolated from Reaumuria soongorica (PalL Maxim.), Artemisia carvifolia (Buch.-Ham. ex Roxb. Hort. Beng.), Peganum harmala L. and Suaeda dendroides (C. A. Mey. Moq.) by using the cultural-dependent method. Then we classified these bacteria based on the difference between their sequences of 16S rRNA (16S ribosomal RNA) gene. Results showed that the isolated bacteria from R. soongorica belonged to the genera Brucella, Bacillus and Variovorax. The bacteria from A. carvifolia belonged to the genera Micromonospora and Brucella. The bacteria from P. harmala belonged to the genera Paramesorhizobium, Bacillus and Peribacillus. The bacteria from S. dendroides belonged to the genus Bacillus. Notably, the genus Bacillus was detected in the three above plants, indicating that Bacillus is a common taxon of endophytic bacteria in halophytes. And, our results found that about 37.50% of the tested strains showed strong protease-producing activity, 6.25% of the tested strains showed strong cellulase-producing activity and 12.50% of the tested strains showed moderate lipase-producing activity. Besides, all isolated strains were positive for IAA (3-Indoleacetic acid) production, 31.25% of isolated strains exhibited a moderate phosphate solubilization activity and 50.00% of isolated strains exhibited a weak siderophore production activity. Our findings suggest that halophytes are valuable resources for identifying microbes with the ability to increase host plant growth and health in salt-affected soils.

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Bacterial Endophytes: Diversity, Functional Importance, and Potential for Manipulation

Cited by 14 publications

References 343 publications

Managing tomato vine decline with soil amendments and transplant treatments: fruit yield, quality, and plant-associated microbial communities

Managing tomato vine decline with soil amendments and transplant treatments: fruit yield, quality, and plant-associated microbial communities

Molecular Mechanism of Plant–Bacteria Interactions

Diversity of cultivable endophytic bacteria associated with halophytes in Xinjiang of China and their plant beneficial traits

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