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Plant Growth-Promoting Endophytic Bacteria Isolated from Miscanthus giganteus and Their Antifungal Activity
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SYSNO ASEP 0580031 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Plant Growth-Promoting Endophytic Bacteria Isolated from Miscanthus giganteus and Their Antifungal Activity Author(s) Lovecká, P. (CZ)
KroneislovÁ, G. (CZ)
Novotná, Z. (CZ)
Roderová, Jana (MBU-M)
Demnerová, K. (CZ)Article number 2710 Source Title Microorganisms. - : MDPI
Roč. 11, č. 11 (2023)Number of pages 14 s. Language eng - English Country CH - Switzerland Keywords genomic analysis ; rhizosphere ; assay ; ACC deaminase ; phosphorus solubilization ; phytohormone ; siderophore OECD category Microbiology Method of publishing Open access Institutional support MBU-M - RVO:61388971 UT WOS 001122806200001 EID SCOPUS 85178137389 DOI 10.3390/microorganisms11112710 Annotation Modern technologies can satisfy human needs only with the use of large quantities of fertilizers and pesticides that are harmful to the environment. For this reason, it is possible to develop new technologies for sustainable agriculture. The process could be carried out by using endophytic microorganisms with a (possible) positive effect on plant vitality. Bacterial endophytes have been reported as plant growth promoters in several kinds of plants under normal and stressful conditions. In this study, isolates of bacterial endophytes from the roots and leaves of Miscanthus giganteus plants were tested for the presence of plant growth-promoting properties and their ability to inhibit pathogens of fungal origin. Selected bacterial isolates were able to solubilize inorganic phosphorus, fix nitrogen, and produce phytohormones, 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase, and siderophore. Leaf bacterial isolate Pantoea ananat is 50 OL 2 had high production of siderophores (zone >= 5 mm), and limited phytohormone production, and was the only one to show ACC deaminase activity. The root bacterial isolate of Pseudomonas libanensis 5 OK 7A showed the best results in phytohormone production (N6-(Delta 2-isopentenyl)adenine and indole-3-acetic acid, 11.7 and 12.6 ng center dot mL(-1), respectively). Four fungal cultures-Fusarium sporotrichioides DBM 4330, Sclerotinia sclerotiorum SS-1, Botrytis cinerea DS 90 and Sphaerodes fimicola DS 93-were used to test the antifungal activity of selected bacterial isolates. These fungal cultures represent pathogenic families, especially for crops. All selected root endophyte isolates inhibited the pathogenic growth of all tested fungi with inhibition percentages ranging from 30 to 60%. Antifungal activity was also tested in two forms of immobilization of selected bacterial isolates: one in agar and the other on dextrin-coated cellulose carriers. These results demonstrated that the endophytic Pseudomonas sp. could be used as biofertilizers for crops. Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2024 Electronic address https://www.mdpi.com/2076-2607/11/11/2710
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