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Alpha and Beta-diversity of Microbial Communities Associated to Plant Disease Suppressive Functions of On-farm Green Composts

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  • Catello Pane

    (Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria, Centro di ricerca Orticoltura e Florovivaismo, via Cavalleggeri 25, 84098 Pontecagnano Faiano, Italy)

  • Roberto Sorrentino

    (Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria, Centro di ricerca Orticoltura e Florovivaismo, via Cavalleggeri 25, 84098 Pontecagnano Faiano, Italy)

  • Riccardo Scotti

    (Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria, Centro di ricerca Orticoltura e Florovivaismo, via Cavalleggeri 25, 84098 Pontecagnano Faiano, Italy)

  • Marcella Molisso

    (Dipartimento di Agraria, Università degli Studi di Napoli Federico II, via Università 100, 80055 Portici, Italy)

  • Antonio Di Matteo

    (Dipartimento di Agraria, Università degli Studi di Napoli Federico II, via Università 100, 80055 Portici, Italy)

  • Giuseppe Celano

    (Dipartimento di Farmacia, Università degli Studi di Salerno, via Giovanni Palo II 132, 84084 Fisciano, Italy)

  • Massimo Zaccardelli

    (Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria, Centro di ricerca Orticoltura e Florovivaismo, via Cavalleggeri 25, 84098 Pontecagnano Faiano, Italy)

Abstract

Green waste composts are obtained from agricultural production chains; their suppressive properties are increasingly being developed as a promising biological control option in the management of soil-borne phytopathogens. The wide variety of microbes harbored in the compost ecological niches may regulate suppressive functions through not yet fully known underlying mechanisms. This study investigates alpha- and beta-diversity of the compost microbial communities, as indicators of the biological features. Our green composts displayed a differential pattern of suppressiveness over the two assayed pathosystems. Fungal and bacterial densities, as well as catabolic and enzyme functionalities did not correlate with the compost control efficacy on cress disease. Differences in the suppressive potential of composts can be better predicted by the variations in the community levels of physiological profiles indicating that functional alpha-diversity is more predictive than that which is calculated on terminal restriction fragments length polymorphisms (T-RFLPs) targeting the 16S rRNA gene. However, beta-diversity described by nMDS analysis of the Bray–Curtis dissimilarity allowed for separating compost samples into distinct functionally meaningful clusters and indicated that suppressiveness could be regulated by selected groups of microorganisms as major deterministic mechanisms. This study contributes to individuating new suitable characterization procedures applicable to the suppressive green compost chain.

Suggested Citation

  • Catello Pane & Roberto Sorrentino & Riccardo Scotti & Marcella Molisso & Antonio Di Matteo & Giuseppe Celano & Massimo Zaccardelli, 2020. "Alpha and Beta-diversity of Microbial Communities Associated to Plant Disease Suppressive Functions of On-farm Green Composts," Agriculture, MDPI, vol. 10(4), pages 1-11, April.
  • Handle: RePEc:gam:jagris:v:10:y:2020:i:4:p:113-:d:341414
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    References listed on IDEAS

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    1. Weibing Xun & Wei Li & Wu Xiong & Yi Ren & Yunpeng Liu & Youzhi Miao & Zhihui Xu & Nan Zhang & Qirong Shen & Ruifu Zhang, 2019. "Diversity-triggered deterministic bacterial assembly constrains community functions," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
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    Cited by:

    1. Ugo De Corato, 2020. "Soil Microbiome Manipulation Gives New Insights in Plant Disease-Suppressive Soils from the Perspective of a Circular Economy: A Critical Review," Sustainability, MDPI, vol. 13(1), pages 1-41, December.
    2. Aracely Zambrano-Romero & Dario X. Ramirez-Villacis & Gabriel Trueba & Reyes Sierra-Alvarez & Antonio Leon-Reyes & Paul Cardenas & Valeria Ochoa-Herrera, 2022. "Dynamics of Microbial Communities during the Removal of Copper and Zinc in a Sulfate-Reducing Bioreactor with a Limestone Pre-Column System," IJERPH, MDPI, vol. 19(3), pages 1-18, January.

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