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Biopriming of seed with plant growth-promoting bacteria for improved germination and seedling growth

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dc.abstract.enSeveral seed priming methods can be used to improve seed germination, seedling vigor, and to overcome abiotic stress. In addition to these benefits, only the biopriming method provides the additional benefit of biotic stress management, earning it special attention. Seed biopriming is useful in almost all crops around the world and is an environmentally friendly alternative to chemical fungicides. Biopriming usually refers to use of beneficial microorganisms, in particular plant growth-promoting bacteria (PGPB) able to survive under various harsh environmental conditions. In this study, various bacterial strains were isolated from samples of different origins, i.e., rhizospheric soil, desert sand, and sea mud. Preliminary screening of 156 bacterial isolates was conducted on the basis of their potassium (K), phosphorus (P) solubilization ability, and production of plant growth hormone, i.e., indole acetic acid (IAA). The most efficient bacteria were identified by 16S rRNA gene nucleotide sequences and further examined for their ACC deaminase activity, ammonia production, and biocontrol activity (defined via chitinolytic activity, HCN, and siderophores production). Finally, carrot seed germination assay was conducted with 10 shortlisted most potent isolates. 68.6, 58.3, and 66.7% of tested bacterial isolates were capable of P, K, and Zn solubilization, respectively. Klebsiella aerogenes AF3II1 showed the highest P and K solubilization, while isolate AF4II5, AF7II3, and PC3 showed the highest IAA synthesis ability. Serratia plymuthica EDC15 and Pseudomonas putida AF1I1 showed the strongest chitinolytic and siderophore production activity, respectively. Seven isolates demonstrated strong HCN production ability. Five isolates improved carrot seed germination. Only selected isolates with plant growth-promoting properties can improve carrot germination. The results of this study demonstrate that mainly auxins are involved in seed germination. Furthermore, the data suggest that phosphate solubilization ability may play an additional role in seed germination.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorAjijah, Nur
dc.contributor.authorPranaw, Kumar
dc.contributor.authorDziewit, Łukasz
dc.contributor.authorFiodor, Angelika
dc.date.accessioned2024-01-24T18:39:17Z
dc.date.available2024-01-24T18:39:17Z
dc.date.issued2023
dc.description.financeNie dotyczy
dc.description.number1
dc.description.sdgZeroHunger
dc.description.volume14
dc.identifier.doi10.3389/FMICB.2023.1142966
dc.identifier.issn1664-302X
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/102342
dc.identifier.weblinkhttps://www.frontiersin.org/articles/10.3389/fmicb.2023.1142966/full
dc.languageeng
dc.pbn.affiliationbiological sciences
dc.relation.ispartofFrontiers in Microbiology
dc.relation.pages1142966
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titleBiopriming of seed with plant growth-promoting bacteria for improved germination and seedling growth
dc.typeJournalArticle
dspace.entity.typePublication