Vineyard soil bacterial diversity and composition revealed by 16S rRNA genes: Differentiation by vineyard management

Burns, Kayla N.; Bokulich, Nicholas A.; Cantu, Dario; Greenhut, Rachel F.; Kluepfel, Daniel A.; O’Geen, A. T.; Strauss, Sarah L.; Steenwerth, Kerri L.

doi:10.1016/j.soilbio.2016.09.007

Cited by 111 publications

(101 citation statements)

References 88 publications

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“…Microbial communities on grape surfaces have been previously studied due to their perceived importance for contribution to wine characteristics, style, and quality [4,6,14]. Bacterial and fungal populations on the grape surface and the vine plant are affected by various biotic and abiotic factors, such as insects, interactions between resident populations, geography, climate, and viticultural practices [2,4,13]. Generally, many of these variables are not independent and may be clustered into broad groups of effects.…”

Section: Discussionmentioning

confidence: 99%

Geographical Origin Has a Greater Impact on Grape Berry Fungal Community than Grape Variety and Maturation State

et al. 2019

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We used barcoded sequencing to analyze the eukaryotic population in the grape berries at different ripening states in four Australian vineyards. Furthermore, we used an innovative compositional data analysis for assessing the diversity of microbiome communities. The novelty was the introduction of log-ratio balances between the detected genera. Altogether, our results suggest that fungal communities were more impacted by the geographical origin of the Australian vineyards than grape variety and harvest time. Even if the most abundant genera were Aureobasidium and Mycosphaerella, they were ubiquitous to all samples and were not discriminative. In fact, the balances and the fungal community structure seemed to be greatly affected by changes of the genera Penicillium, Colletotrichum, Aspergillus, Rhodotorula, and Botrytis. These results were not evident from the comparison of relative abundance based on OTU counts alone, remarking the importance of the balance analysis for microbiome studies.

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Section: Discussionmentioning

confidence: 99%

Geographical Origin Has a Greater Impact on Grape Berry Fungal Community than Grape Variety and Maturation State

et al. 2019

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“…These changing soil conditions and increased organic inputs likely drive the increased microbial diversity found in soils of perennial systems planted with cover crops [11,14,58]. This increased soil microbial diversity is positively correlated with nearly all of the benefits of cover crops to production systems, including increased soil organic carbon (SOC) and total N (TN) contents and, ultimately, tree production [36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54] (Table 1). Changes can persist throughout the long-term management of a perennial system, as 10 and 22 years of planting a monoculture cover crop of F. macrophylla in rubber (E. urophylla) orchards increased bacterial gene abundance and diversity down to a depth of 60 cm within the soil profile compared with the no-cover-crop control treatment [35].…”

Section: Cover Crops Increase Soil Microbial Diversitymentioning

confidence: 99%

“…Bacteria are the most studied potential microbial indicators for soil quality [33,113]. Across multiple studies (Table 1), regardless of the use of nonlegume or legume cover crops, the relative abundance of members of the phyla Acidobacteria, Actinobacteria, Bacteroidetes, Firmicutes (Bacillus), Proteobacteria (Azotobacter, Nitrobacter, Pseudomonas, and Rhizobiales), Tenericutes, and Verrucomicrobia was positively related to a general improvement in N availability and SOM content in tree cropping systems [35][36][37][38][39][40][43][44][45]. Members of the abovementioned bacterial phyla are the most common drivers of soil health [33,113].…”

Section: Potentially Important Microbes Associated With Cover Crops Imentioning

confidence: 99%

Impact of Cover Crops on the Soil Microbiome of Tree Crops

Castellano‐Hinojosa

Strauss

2020

Microorganisms

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Increased concerns associated with interactions between herbicides, inorganic fertilizers, soil nutrient availability, and plant phytotoxicity in perennial tree crop production systems have renewed interest in the use of cover crops in the inter-row middles or between trees as an alternative sustainable management strategy for these systems. Although interactions between the soil microbiome and cover crops have been examined for annual cropping systems, there are critical differences in management and growth in perennial cropping systems that can influence the soil microbiome and, therefore, the response to cover crops. Here, we discuss the importance of cover crops in tree cropping systems using multispecies cover crop mixtures and minimum tillage and no-tillage to not only enhance the soil microbiome but also carbon, nitrogen, and phosphorus cycling compared to monocropping, conventional tillage, and inorganic fertilization. We also identify potentially important taxa and research gaps that need to be addressed to facilitate assessments of the relationships between cover crops, soil microbes, and the health of tree crops. Additional evaluations of the interactions between the soil microbiome, cover crops, nutrient cycling, and tree performance will allow for more effective and sustainable management of perennial cropping systems.

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“…pollination and pest control), also require future research. It can be hypothesized that the more diverse cover crop mixtures used in organic and biodynamic vineyards will have an impact not only on aboveground biodiversity (via providing habitats for insects; Hartwig and Ammon, 2002) but also on below-ground biodiversity (via rhizodeposition and associated microbes, as found by Burns et al, 2016) and consequently on soil functionality.…”

Section: Vegetative Growth Canopy Structure and Susceptibility To Fumentioning

confidence: 99%

Conversion to organic and biodynamic viticultural practices: impact on soil, grapevine development and grape quality

et al. 2019

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Aim: The effects of integrated, organic and biodynamic management on soil quality and the growth and morphological development of Riesling grapevines were assessed during the first 4 years of a long-term field trial in Geisenheim, Germany. The overall aim was to understand the effects of these different viticultural practices on soil quality and plant morphology as the basis for product quality.Methods and results: As indicators of soil quality, earthworm abundance and the activity of selected enzymes were assessed. The vegetative and reproductive development of the grapevines, as well as their susceptibility to fungal diseases in the field, wood and grape composition, and grape yield, were investigated. Individual variables were subjected to analysis of variance. Additionally, all variables were subjected to multivariate principal component analysis. Compared with plots under integrated management, plots under the two biological treatments were characterized by higher soil quality and lower vegetative growth and grape yield, and therefore higher exposure of grapes and lower grape cluster compactness, and, probably as a result of these morphological differences, lower incidence of acetic acid rot. Principal component analysis clearly differentiated the three treatments, and showed that biodynamic management had more pronounced effects than organic management in terms of enhanced soil fertility and reduction of vegetative growth.Conclusions: In the present study, organic and especially biodynamic management resulted in a morphology favouring production of high-quality grapes. The treatments differed in terms of fertilization and plant protection methods as well as choice of cover crops. Therefore, further research is necessary with respect to root growth and the nitrogen and water uptake dynamics of vines and cover crops. The differences between grapes produced under organic and biodynamic management emphasize the need for more research on the mode of action of biodynamic preparations.Significance and impact of the study: In recent years, both winegrowers and consumers have expressed steadily growing interest in organic and especially biodynamic wine production. The present study contributes to a better understanding of the effects on grapevine growth and morphological development of shifting to these methods as a way to increase product quality.

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Vineyard soil bacterial diversity and composition revealed by 16S rRNA genes: Differentiation by vineyard management

Cited by 111 publications

References 88 publications

Geographical Origin Has a Greater Impact on Grape Berry Fungal Community than Grape Variety and Maturation State

Geographical Origin Has a Greater Impact on Grape Berry Fungal Community than Grape Variety and Maturation State

Impact of Cover Crops on the Soil Microbiome of Tree Crops

Conversion to organic and biodynamic viticultural practices: impact on soil, grapevine development and grape quality

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