Phyllosphere bacterial assembly in citrus crop under conventional and ecological management

Divergences between agricultural management can result in different types of biological interactions between plants and microorganisms, which may affect food quality and productivity. Conventional practices are well-established in the agroindustry as very efficient and lucrative; however, the increa...

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Bibliographic Details
Published in:PeerJ (San Francisco, CA) CA), 2020-06, Vol.8, p.e9152-e9152, Article e9152
Main Authors: Carvalho, Carolinne R., Dias, Armando CF, Homma, Sérgio K., Cardoso, Elke JBN
Format: Article
Language:English
Subjects:
Agricultural management
Agricultural Science
Agriculture
Agrochemicals
Agroecology
Bacteria
Crop diseases
Crop production
Crop yield
Crops
Deoxyribonucleic acid
DNA
Flowers & plants
Foliar copper
Food quality
Genetic testing
Microbiology
Microorganisms
New generation sequencing
Pesticides
Phyllosphere
Phylogenetics
Sequence analysis
Taxonomy
XRF
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Summary:Divergences between agricultural management can result in different types of biological interactions between plants and microorganisms, which may affect food quality and productivity. Conventional practices are well-established in the agroindustry as very efficient and lucrative; however, the increasing demand for sustainable alternatives has turned attention towards agroecological approaches. Here we intend to explore microbial dynamics according to the agricultural management used, based on the composition and structure of these bacterial communities on the most environmentally exposed habitat, the phyllosphere. Leaf samples were collected from a Citrus crop (cultivated Orange) in Mogi-Guaçu (SP, Brazil), where either conventional or ecological management systems were properly applied in two different areas. NGS sequencing analysis and quantitative PCR allowed us to comprehend the phyllosphere behavior and µ-XRF (micro X-ray fluorescence) could provide an insight on agrochemical persistence on foliar tissues. Our results demonstrate that there is considerable variation in the phyllosphere community due to the management practices used in the citrus orchard, and it was possible to quantify most of this variation. Equally, high copper concentrations may have influenced bacterial abundance, having a relevant impact on the differences observed. Moreover, we highlight the intricate relationship microorganisms have with crop production, and presumably with crop yield as well.
ISSN:2167-8359
2167-8359
DOI:10.7717/peerj.9152