Commercial Bioinoculants Increase Root Length Colonization and Improve Petiole Nutrient Concentration of Field-grown Grapevines

Berdeja, Mariam; Ye, Qiuhong; Bauerle, Taryn L.; Heuvel, Justine E. Vanden

doi:10.21273/horttech05110-22

Cited by 4 publications

(3 citation statements)

References 49 publications

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“…Boosting root colonization in that trial is not surprising, given such a low level of natural root colonization, although why it was so low to begin with is not clear. Inoculation with commercial AMF products also enhanced root colonization from ~60% in uninoculated controls to 70% RL in 10-year-old Pinot noir vines on 3309C rootstock, and from ~50% in the controls to 60% of RL in 20-year-old Riesling vines on 3309C or SO4 rootstocks in New York vineyards (Berdeja et al 2023). Others have reported increased AMF colonization after inoculating vines with commercial products in young vineyards, where a greater response might be expected due to loss of AMF propagules after tilling and preparing the soil, and a potential lack of AMF in planting stock (Mikiciuk et al 2019, Torres et al 2021).…”

Section: Discussionmentioning

confidence: 88%

“…While our results showed that grapevine roots become well-colonized with fewer AMF propagules and that colonization of AMF of roots in the region's vineyards was high even in young vineyards, we do not imply that inoculating vines with AMF will not further enhance root colonization and potentially benefit vine health. Adding AMF inoculum even to older vines has increased root colonization in some cases (Nicolás et al 2015, Berdeja et al 2023. Inoculating 10-year-old V. vinifera Crimson Seedless vines in a vineyard in Spain with a lab-produced AMF inoculum increased root colonization to 60% of RL, rather than only 10 to 20% RL colonized in the existing, uninoculated, control vines (Nicolás et al 2015).…”

Section: Discussionmentioning

confidence: 99%

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Managing Arbuscular Mycorrhizal Fungi in Arid Columbia Basin Vineyards of the Pacific Northwest United States

et al. 2023

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Background and goalsArbuscular mycorrhizal fungi (AMF) are root symbionts that help grapevines acquire nutrients from soil. Growers in many regions, including the Columbia River basin of Oregon and Washington, lack information needed to best manage AMF. Such lacking information includes understanding whether natural AMF populations are sufficient to ensure healthy colonization in new plantings, and what factors influence AMF in established plantings. Methods and key findingsAMF colonization of grapevine fine roots was determined in 32 commercial vineyards and in a vineyard that was heavily infested by the northern root-knot nematode (NRKN, Meloidogyne hapla). Root colonization by AMF was as extensive in young vines (one-to two-years-old) as in older vines (>15-years-old) examined in the survey, and was high throughout the season in the single vineyard trial. AMF colonization was greater overall in red wine grape cultivars than in white wine grape cultivars. AMF colonization correlated negatively with soil nitrate and leaf nitrogen (N) concentrations across vineyards, while arbuscules in roots correlated negatively with NRKN populations in soil. Both AMF and arbuscules in roots correlated negatively with NRKN populations per unit of fine root length at the beginning and end of the growing season in the heavily infested vineyard. Conclusions and significanceResults suggest that AMF populations in soils of the Columbia River basin are ample to ensure high levels of grapevine root colonization, so inoculation is likely not needed when planting or replanting vineyards in the region. AMF colonization was reduced by high N and high populations of NRKN in soil.

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Managing Arbuscular Mycorrhizal Fungi in Arid Columbia Basin Vineyards of the Pacific Northwest United States

et al. 2023

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“…For all the above‐mentioned reasons, AMF have been used to produce PP – as single species or as consortia with other AMF, ectomycorrhizal fungi, or PGP bacteria – and applied for several decades, mainly to improve horticulture and grain crop productivity (Basiru et al., 2021 ; Berdeja et al., 2023 ) while reducing environmental costs (Berruti et al., 2016 ).…”

Section: Fungi As Plant Growth‐promoting Microorganismsmentioning

confidence: 99%

Fungi beyond limits: The agricultural promise of extremophiles

Zenteno‐Alegría,

Yarzábal Rodríguez,

Ciancas Jiménez

et al. 2024

Microbial Biotechnology

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Global climate changes threaten food security, necessitating urgent measures to enhance agricultural productivity and expand it into areas less for agronomy. This challenge is crucial in achieving Sustainable Development Goal 2 (Zero Hunger). Plant growth‐promoting microorganisms (PGPM), bacteria and fungi, emerge as a promising solution to mitigate the impact of climate extremes on agriculture. The concept of the plant holobiont, encompassing the plant host and its symbiotic microbiota, underscores the intricate relationships with a diverse microbial community. PGPM, residing in the rhizosphere, phyllosphere, and endosphere, play vital roles in nutrient solubilization, nitrogen fixation, and biocontrol of pathogens. Novel ecological functions, including epigenetic modifications and suppression of virulence genes, extend our understanding of PGPM strategies. The diverse roles of PGPM as biofertilizers, biocontrollers, biomodulators, and more contribute to sustainable agriculture and environmental resilience. Despite fungi's remarkable plant growth‐promoting functions, their potential is often overshadowed compared to bacteria. Arbuscular mycorrhizal fungi (AMF) form a mutualistic symbiosis with many terrestrial plants, enhancing plant nutrition, growth, and stress resistance. Other fungi, including filamentous, yeasts, and polymorphic, from endophytic, to saprophytic, offer unique attributes such as ubiquity, morphology, and endurance in harsh environments, positioning them as exceptional plant growth‐promoting fungi (PGPF). Crops frequently face abiotic stresses like salinity, drought, high UV doses and extreme temperatures. Some extremotolerant fungi, including strains from genera like Trichoderma, Penicillium, Fusarium, and others, have been studied for their beneficial interactions with plants. Presented examples of their capabilities in alleviating salinity, drought, and other stresses underscore their potential applications in agriculture. In this context, extremotolerant and extremophilic fungi populating extreme natural environments are muchless investigated. They represent both new challenges and opportunities. As the global climate evolves, understanding and harnessing the intricate mechanisms of fungal‐plant interactions, especially in extreme environments, is paramount for developing effective and safe plant probiotics and using fungi as biocontrollers against phytopathogens. Thorough assessments, comprehensive methodologies, and a cautious approach are crucial for leveraging the benefits of extremophilic fungi in the changing landscape of global agriculture, ensuring food security in the face of climate challenges.

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Potential to take root in viticulture? An evaluation of mycorrhizal inoculants on the growth and nutrient uptake of young wine grapes planted in live field soil

Lueck,

Moyer,

Cheeke

2024

Journal of Applied Microbiology

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Aims Incorporating biofertilizers, such as arbuscular mycorrhizal fungal (AM) fungal inoculants, into vineyard management practices may enhance vine growth and reduce environmental impact. Here, we evaluate the effects of commercially available and local AM fungal inoculants on the growth, root colonization, and nutrient uptake of wine grapes (Vitis vinifera) when planted in a field soil substrate. Methods and results In a greenhouse experiment, young wine grapes were planted in a field soil substrate and inoculated with one of three commercially available mycorrhizal inoculant products, or one of two locally collected whole soil inoculants. After 4 months of growth, inoculated vines showed no differences in plant biomass, colonization of roots by AM fungi, or foliar macronutrient concentrations compared to uninoculated field soil substrate. However, vines grown with local inoculants had greater shoot biomass than vines grown with mycorrhizal inoculant products. Conclusions Although effects from inoculations with AM fungi varied by inoculant type and source, inoculations may not improve young vine performance in field soils with a resident microbial community.

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Commercial Bioinoculants Increase Root Length Colonization and Improve Petiole Nutrient Concentration of Field-grown Grapevines

Cited by 4 publications

References 49 publications

Managing Arbuscular Mycorrhizal Fungi in Arid Columbia Basin Vineyards of the Pacific Northwest United States

Managing Arbuscular Mycorrhizal Fungi in Arid Columbia Basin Vineyards of the Pacific Northwest United States

Fungi beyond limits: The agricultural promise of extremophiles

Potential to take root in viticulture? An evaluation of mycorrhizal inoculants on the growth and nutrient uptake of young wine grapes planted in live field soil

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