Does Organic Farming Increase Raspberry Quality, Aroma and Beneficial Bacterial Biodiversity?

Sangiorgio, Daniela; Cellini, Antonio; Spinelli, Francesco; Farneti, Brian; Khomenko, Iuliia; Muzzi, Enrico; Savioli, Stefano; Pastore, Chiara; Rodríguez‐Estrada, Maria Teresa; Donati, Irene

doi:10.3390/microorganisms9081617

Cited by 18 publications

(14 citation statements)

References 99 publications

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“…Recently. changes in fruit quality and aroma have been linked to shifts in the fruit-associated bacterial community composition in raspberry (Sangiorgio et al, 2021). Compared to soil, hydroponic greenhouse cropping systems are an ecosystem with low microbiological complexity.…”

Section: Introductionmentioning

confidence: 99%

The Bacterial Microbiome of the Tomato Fruit Is Highly Dependent on the Cultivation Approach and Correlates With Flavor Chemistry

Rodríguez¹,

Novak

Buchholz³

et al. 2021

Front. Plant Sci.

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The modes of interactions between plants and plant-associated microbiota are manifold, and secondary metabolites often play a central role in plant-microbe interactions. Abiotic and biotic (including both plant pathogens and endophytes) stress can affect the composition and concentration of secondary plant metabolites, and thus have an influence on chemical compounds that make up for the taste and aroma of fruit. While the role of microbiota in growth and health of plants is widely acknowledged, relatively little is known about the possible effect of microorganisms on the quality of fruit of plants they are colonizing. In this work, tomato (Solanum lycopersicum L.) plants of five different cultivars were grown in soil and in hydroponics to investigate the impact of the cultivation method on the flavor of fruit, and to assess whether variations in their chemical composition are attributable to shifts in bacterial microbiota. Ripe fruit were harvested and used for bacterial community analysis and for the analysis of tomato volatiles, sugars and acids, all contributing to flavor. Fruit grown in soil showed significantly higher sugar content, whereas tomatoes from plants under hydroponic conditions had significantly higher levels of organic acids. In contrast, aroma profiles of fruit were shaped by the tomato cultivars, rather than the cultivation method. In terms of bacterial communities, the cultivation method significantly defined the community composition in all cultivars, with the bacterial communities in hydroponic tomatoes being more variable that those in tomatoes grown in soil. Bacterial indicator species in soil-grown tomatoes correlated with higher concentrations of volatiles described to be perceived as “green” or “pungent.” A soil-grown specific reproducibly occurring ASV (amplicon sequence variants) classified as Bacillus detected solely in “Solarino” tomatoes, which were the sweetest among all cultivars, correlated with the amount of aroma-relevant volatiles as well as of fructose and glucose in the fruit. In contrast, indicator bacterial species in hydroponic-derived tomatoes correlated with aroma compounds with “sweet” and “floral” notes and showed negative correlations with glucose concentrations in fruit. Overall, our results point toward a microbiota-related accumulation of flavor and aroma compounds in tomato fruit, which is strongly dependent on the cultivation substrate and approach.

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Section: Introductionmentioning

confidence: 99%

The Bacterial Microbiome of the Tomato Fruit Is Highly Dependent on the Cultivation Approach and Correlates With Flavor Chemistry

Rodríguez¹,

Novak

Buchholz³

et al. 2021

Front. Plant Sci.

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“…In post-emergent application, pesticide sprays target the above-ground plant organs to selectively reduce pathogenic microorganisms in complex communities. In addition to the effects on pathogen epiphytic growth, pesticides also impact the phyllosphere microbial biocoenosis that hosts a variety of microorganisms, thus influencing plant susceptibility to diseases (Purahong et al, 2018), plant secondary metabolism (Sangiorgio et al, 2021) as well as fruit quality and productivity (Sangiorgio et al, 2022a;Sangiorgio et al, 2022b). The phyllosphere is an oligotrophic and dynamic environment subjected to both circadian and seasonal changes of abiotic (e.g.…”

Section: Effects Of Chemical Pesticide On Phytobiotamentioning

confidence: 99%

“…Although the first consists of the exclusion of synthetic pesticides and fertilizers and low or notillage, organic farming may differ from conventional management in several ways (Leff and Fierer, 2013), restricting the comparability among different researches (Lupatini et al, 2017). The cultivation method, affecting the nutrient availability and altering the ecological niches, might also alter the composition and structure of the plant microbiota in several agricultural systems (Caldwell et al, 2015;Hartmann et al, 2014;Sangiorgio et al, 2021). However, the observed effects might be complex and timedependent (Jonason et al, 2011).…”

Section: Effect Of Cultural Strategies On Microbiomementioning

confidence: 99%

“…Different investigations led to very diverse results (Leff and Fierer, 2013), which might depend on the variety of cultivation and disease control practices implemented, on the rates and frequency of treatments and on the target plant of the study. For example, organically-grown apples display a higher bacterial evenness and diversity (Wassermann et al, 2019b), whereas, in raspberry, conventional cultivation promotes bacterial biodiversity on fruit (Sangiorgio et al, 2021). This might be due to the fact that in low-input agriculture, microbial communities are dominated by highly adapted bacterial species able to outcompete generalist colonizers (Sangiorgio et al, 2021).…”

Section: Effect Of Cultural Strategies On Microbiomementioning

confidence: 99%

“…For example, organically-grown apples display a higher bacterial evenness and diversity (Wassermann et al, 2019b), whereas, in raspberry, conventional cultivation promotes bacterial biodiversity on fruit (Sangiorgio et al, 2021). This might be due to the fact that in low-input agriculture, microbial communities are dominated by highly adapted bacterial species able to outcompete generalist colonizers (Sangiorgio et al, 2021).…”

Section: Effect Of Cultural Strategies On Microbiomementioning

confidence: 99%

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The unseen effect of pesticides: The impact on phytobiota structure and functions

Sangiorgio¹,

Spinelli²,

Vandelle³

2022

Front. Agron.

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In the last years, the diffusion and implementation of next-generation sequencing and the reduction of costs raised the interest in phytyobiome studies allowing to dissect the ecological interactions regulating the holobiont. Indeed, crop plants are associated with a wide diversity of microorganisms in all their parts. Crop microbiota influences plant phenotype, growth, yield and quality by contributing to plant resistance toward diseases, plant adaptation to abiotic stresses, and plant nutrition. The association between terrestrial plants and microbes developed at least 460 million years ago, as suggested by the fossil evidence of the earliest land plants, indicating the essential role of microbes for plants. Recent studies indicate that plants actively recruit beneficial microorganisms to facilitate their adaptation to environmental conditions. Cultivation methods and disease control measures can influence plant microbiome structure and functions. Both pesticide and biological control agent applications may alter the biodiversity inside the phytobiota and suppress beneficial functions. Nonetheless, to date, the effects of disease control measures on phytobiota and their possible side consequences on plant growth, crop productivity and quality remain a neglected field of study. The present work summarizes the known effects on phytobiota providing evidence about the role of plant microbial community in determining the overall efficacy of the applied control measure and suggests that future studies on plant disease control consider also the microbe-mediated effects on plant fitness.

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Organic interventions conferring stress tolerance and crop quality in agroecosystems during the United Nations Decade on Ecosystem Restoration

et al. 2021

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Excessive use of synthetic chemicals in conventional agriculture largely degraded the agroecosystems that constitute approximately 40% of the global terrestrial ecosystems. Moreover, changing climate resulted in a substantial loss in agricultural productivity (both in quantity and in quality) mainly due to diverse abiotic and biotic stresses. This draws public awareness about depleting natural resources, viz., soil, land, and water due to unsustainable agricultural practices and equivalently concerns for food-related animal and human health risks. Modern organic agriculture has shown positive impacts in terms of food/biomass production, climate resilience, soil health, biodiversity, nutritional security, and good quality of life; and is of prodigious demand for nutrient-rich organic food products. In the ensuing decade, owing to the principal focus for the quality aspects or health benefits of organic agriculture, this review explores how organic interventions affect the nutritional value and yield quality in a production system; enable plants to adapt to adverse futuristic environmental conditions, and address the global food and nutritional security challenges. The chronological emergence, current global status, public perceptions, and key components of organic agriculture with their attached health benefits are inextricably synthesized herein. Fostering the ethos of organic agriculture under the UN Decade on Ecosystem Restoration (2021-2030) is highly imperative for agroecosystem restoration and its sustainable management. Moreover, the multidimensional paybacks of organic agriculture help in attaining important global goals and targets such as the Bonn Challenge and United Nations Sustainable Development Goals (UN-SDGs) by the year 2030. Therefore, invigorating the escalation of organic farming as a concurrent strategy of soil, land, and ecosystem restoration is the need of the hour.

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Does Organic Farming Increase Raspberry Quality, Aroma and Beneficial Bacterial Biodiversity?

Cited by 18 publications

References 99 publications

The Bacterial Microbiome of the Tomato Fruit Is Highly Dependent on the Cultivation Approach and Correlates With Flavor Chemistry

The Bacterial Microbiome of the Tomato Fruit Is Highly Dependent on the Cultivation Approach and Correlates With Flavor Chemistry

The unseen effect of pesticides: The impact on phytobiota structure and functions

Organic interventions conferring stress tolerance and crop quality in agroecosystems during the United Nations Decade on Ecosystem Restoration

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