Next-Generation Bio-Products Sowing the Seeds of Success for Sustainable Agriculture

Berg, Gabriele; Zachow, Christin; Müller, Henry; Philipps, J.; Tilcher, Ralf

doi:10.3390/agronomy3040648

Cited by 147 publications

(79 citation statements)

References 42 publications

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“…Harnessing the beneficial potential of the plant microbiome to mitigate major crop diseases, such as HLB, is gaining interest as a sustainable approach to improve agricultural production (5,6,32). It has been suggested that the abundances of core members within plant-associated microbial communities, which may stably associate with particular hosts (11,13,15), are a determinant factor in whether the community is functioning in a "healthy" state (9).…”

Section: Discussionmentioning

confidence: 99%

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Defining the Core Citrus Leaf- and Root-Associated Microbiota: Factors Associated with Community Structure and Implications for Managing Huanglongbing (Citrus Greening) Disease

Blaustein

Lorca

Meyer

et al. 2017

Appl Environ Microbiol

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Stable associations between plants and microbes are critical to promoting host health and productivity. The objective of this work was to test the hypothesis that restructuring of the core microbiota may be associated with the progression of huanglongbing (HLB), the devastating citrus disease caused by Liberibacter asiaticus, Liberibacter americanus, and Liberibacter africanus. The microbial communities of leaves (n ϭ 94) and roots (n ϭ 79) from citrus trees that varied by HLB symptom severity, cultivar, location, and season/time were characterized with Illumina sequencing of 16S rRNA genes. The taxonomically rich communities contained abundant core members (i.e., detected in at least 95% of the respective leaf or root samples), some overrepresented site-specific members, and a diverse community of lowabundance variable taxa. The composition and diversity of the leaf and root microbiota were strongly associated with HLB symptom severity and location; there was also an association with host cultivar. The relative abundance of Liberibacter spp. among leaf microbiota positively correlated with HLB symptom severity and negatively correlated with alpha diversity, suggesting that community diversity decreases as symptoms progress. Network analysis of the microbial community time series identified a mutually exclusive relationship between Liberibacter spp. and members of the Burkholderiaceae, Micromonosporaceae, and Xanthomonadaceae. This work confirmed several previously described plant disease-associated bacteria, as well as identified new potential implications for biological control. Our findings advance the understanding of (i) plant microbiota selection across multiple variables and (ii) changes in (core) community structure that may be a precondition to disease establishment and/or may be associated with symptom progression.IMPORTANCE This study provides a comprehensive overview of the core microbial community within the microbiomes of plant hosts that vary in extent of disease symptom progression. With 16S Illumina sequencing analyses, we not only confirmed previously described bacterial associations with plant health (e.g., potentially beneficial bacteria) but also identified new associations and potential interactions between certain bacteria and an economically important phytopathogen. The importance of core taxa within broader plant-associated microbial communities is discussed.KEYWORDS core microbiome, plant-associated microbiota, Liberibacter, pathogenmicrobe interactions

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Section: Discussionmentioning

confidence: 99%

“…Under the right circumstances, the microbiome can bolster plant productivity by providing protection against pathogens, among other mechanisms (1)(2)(3)(4). Several studies have indicated that managing microbial taxonomic/functional diversity at the field scale can have positive effects on crop production (5)(6)(7)(8).…”

mentioning

confidence: 99%

Defining the Core Citrus Leaf- and Root-Associated Microbiota: Factors Associated with Community Structure and Implications for Managing Huanglongbing (Citrus Greening) Disease

Blaustein

Lorca

Meyer

et al. 2017

Appl Environ Microbiol

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“…Through their impact on the development of next-generation bio-products, NGS technologies are already an important driver of innovation toward a sustainable agriculture (Berg et al, 2013). The advantages of NGS technologies over classical techniques for microbial community studies are illustrated in Fig.…”

Section: Opportunities For Biocontrol Research In the Microbiome Eramentioning

confidence: 99%

Biological control in the microbiome era: Challenges and opportunities

2015

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“…Beneficial plant-associated microbes can help plants suppress diseases, stimulate growth, occupy space that would otherwise be taken up by pathogens, promote biotic stress resistance, and increase crop yield and quality by nutrient mobilization and transport (Berg et al 2013). Therefore, the plant microbiome is a key determinant of plant health and productivity.…”

Section: Desert Farming Exploits Plant-microbe Interaction To Improvementioning

confidence: 99%

Plant-Microbe Interactions and Water Management in Arid and Saline Soils

Daffonchio

Hirt

Berg

2014

Principles of Plant-Microbe Interactions

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Drought and salinity are major factors limiting agriculture in many regions in the world, and their importance is predicted to even increase in the near future in parallel with the ongoing global warming and climate changes. Soil and rhizosphere microbes are potential resources for counteracting such abiotic stresses in plants. The knowledge on the roles of root microorganisms in retaining soil humidity and promoting plant growth under such abiotic stresses is analyzed in this chapter. The importance of microbial diversity in the rhizosphere for alleviating drought and salinity effects on the plant physiology is discussed in the light of "Desert Farming", the general crop management practice that is frequently used in arid regions. The plant growth promoting functional services exerted by microorganisms within the rhizosphere in arid soils are presented in relation to the plant response under water stress. The Effects of Drought and Salinity on Plant PhysiologyA major challenge for future agriculture is to cope with the increasing demand for food production, facing a constantly increasing world population. This growing demand for agricultural production is paralleled by dramatic losses of arable land due to enhanced soil destruction and erosion. Drought and soil salinity are the two major environmental factors that limit plant growth and development thereby negatively affecting agricultural yield by more than 60%. Water shortage is critical in many areas of the world and is usually countered by extensive irrigation. Although the planet earth is rich in water, not only the water of the oceans, but also most inland water resources are highly saline. Moreover, irrigation usually results in soil salinization making drought and soil salinity increasing agricultural problems (Bartels and Sunkar 2005).To convert deserts into arable, green landscape is a global vision as well as competent answer to world hunger and climate change (Clery 2011). Desert farming, which generally relies on irrigation, is part of this vision. Agriculture systems were already developed in arid

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Next-Generation Bio-Products Sowing the Seeds of Success for Sustainable Agriculture

Cited by 147 publications

References 42 publications

Defining the Core Citrus Leaf- and Root-Associated Microbiota: Factors Associated with Community Structure and Implications for Managing Huanglongbing (Citrus Greening) Disease

Defining the Core Citrus Leaf- and Root-Associated Microbiota: Factors Associated with Community Structure and Implications for Managing Huanglongbing (Citrus Greening) Disease

Biological control in the microbiome era: Challenges and opportunities

Plant-Microbe Interactions and Water Management in Arid and Saline Soils

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