Czech J. Food Sci., 2023, 41(1):44-53 | DOI: 10.17221/200/2022-CJFS

Biodiversity of Vitis vinifera endophytes in conventional and biodynamic vineyardOriginal Paper

Maria Vrublevskaya¹, Thi Tra My Nguyenová¹, Lucie Drábová², Petra Lovecká³, Blanka Vrchotová³, Olga Maťátková¹, Markéta Kulišová^1*, Irena Jarošová Kolouchová¹

¹ Department of Biotechnology, University of Chemistry and Technology Prague, Prague, Czech Republic

² Department of Food Analysis and Nutrition, University of Chemistry and Technology Prague, Prague, Czech Republic

³ Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, Prague, Czech Republic

Plants are permanently exposed to biotic and abiotic stress and have therefore developed intricate resistance mechanisms, consequently. These include the presence of microbial endophytes, which can promote plant growth and ensure better resilience against unfavourable conditions. These microorganisms colonising plant tissues can directly affect plant growth by producing phytohormones, antioxidants, 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity, or indirectly by the production of siderophores and antifungal agents. To the best of our knowledge, this is the first study devoted to assessing bacterial endophyte diversity and their plant growth-promoting properties in two utterly distinct vineyards in view of agricultural management (conventional, biodynamic) in the Czech Republic. With these different agricultural approaches, we hypothesised different numerical representations of bacterial endophytes acquired from vine shoots and leaves, which was not proved (P = 0.743, F = 0.129). A total of 470 distinct bacterial endophytes were isolated from the Vitis vinifera plants from the conventional and biodynamic vineyard and from which over 80% were identified by the matrix-assisted laser desorption-time-of-flight mass spectrometry (MALDI-TOF MS). In both vineyards, the dominant bacterial genus was Bacillus, followed by Pantoea, Pseudomonas and Staphylococcus. Plant-promoting endophyte properties varied with respect to the season and type of vineyard. The ability to produce indole-3-acetic acid (IAA) and ACC deaminase was higher in the biodynamic vineyard, in comparison with antioxidant activity, which was found in a higher proportion in isolates from the conventional vineyard.

Keywords: 1-aminocyclopropane-1-carboxylate deaminase; antioxidant activity; grapevine; indole-3-acetic acid; matrix-assisted laser desorption-time-of-flight mass spectrometry (MALDI-TOF MS)

Accepted: January 20, 2023; Prepublished online: February 9, 2023; Published: February 27, 2023  Show citation