Halotolerant plant growth-promoting bacteria, Bacillus pumilus, modulates water status, chlorophyll fluorescence kinetics and antioxidant balance in salt and/or arsenic-exposed wheat

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dc.contributor.authorOzfidan-Konakci, Ceyda
dc.contributor.authorArikan, Busra
dc.contributor.authorAlp-Turgut, Fatma Nur
dc.contributor.authorBalci, Melike
dc.contributor.authorUysal, Ahmet
dc.contributor.authorYildiztugay, Evren
dc.date.accessioned2024-02-23T14:02:52Z
dc.date.available2024-02-23T14:02:52Z
dc.date.issued2023
dc.departmentNEÜen_US
dc.description.abstractSeed priming is an effective and novel technique and the use of eco-friendly biological agents improves the physiological functioning in the vegetative stage of plants. This procedure ensures productivity and acquired stress resilience in plants against adverse conditions without contaminating the environment. Though the mechanisms of bio-priming-triggered alterations have been widely explained under induvial stress conditions, the interaction of combined stress conditions on the defense system and the functionality of photosynthetic apparatus in the vegetative stage after the inoculation to seeds has not been fully elucidated. After Bacillus pumilus inoculation to wheat seeds (Triticum aestivum), three-week-old plants were hydroponically exposed to the alone and combination of salt (100 mM NaCl) and 200 mu M sodium arsenate (Na2HAsO4 center dot 7H(2O), As) for 72 h. Salinity and As pollutant resulted in a decline in growth, water content, gas exchange parameters, fluorescence kinetics and performance of photosystem II (PSII). On the other hand, the seed inoculation against stress provided the alleviation of relative growth rate (RGR), relative water content (RWC) and chlorophyll fluorescence. Since there was no effective antioxidant capacity, As and/or salinity caused the induction of H2O(2) accumulation and thiobarbituric acid reactive substances content (TBARS) in wheat. The inoculated seedlings had a high activity of superoxide dismutase (SOD) under stress. B. pumilis decreased the NaCl-induced toxic H2O2 levels by increasing peroxidase (POX) and enzymes/non-enzymes related to ascorbate-glutathione (AsA-GSH) cycle. In the presence of As exposure, the inoculated plants exhibited an induction in CAT activity. On the other hand, for H2O2 scavenging, the improvement in the AsA-GSH cycle was observed in bacterium priming plants plus the combined stress treatment. Since B. pumilus inoculation reduced H2O2 levels against all stress treatments, lipid peroxidation subsequently decreased in wheat leaves. The findings obtained from our study explained that the seed inoculation with B. pumilus provided an activation in the defense system and protection in growth, water status, and gas exchange regulation in wheat plants against the combination of salt and As.en_US
dc.description.sponsorshipSelcuk University Scientific Research Projects Coordinating Office [22201054]en_US
dc.description.sponsorshipThis work was supported by Selcuk University Scientific Research Projects Coordinating Office (Grant Number: 22201054) .en_US
dc.identifier.doi10.1016/j.envres.2023.116089
dc.identifier.issn0013-9351
dc.identifier.issn1096-0953
dc.identifier.pmid37172678en_US
dc.identifier.scopus2-s2.0-85159071845en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.envres.2023.116089
dc.identifier.urihttps://hdl.handle.net/20.500.12452/11862
dc.identifier.volume231en_US
dc.identifier.wosWOS:001005458900001en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherAcademic Press Inc Elsevier Scienceen_US
dc.relation.ispartofEnvironmental Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAntioxidanten_US
dc.subjectBacillus Pumilusen_US
dc.subjectChlorophyll Fluorescenceen_US
dc.subjectGas Exchangeen_US
dc.subjectSeed Primingen_US
dc.subjectTriticum Aestivumen_US
dc.titleHalotolerant plant growth-promoting bacteria, Bacillus pumilus, modulates water status, chlorophyll fluorescence kinetics and antioxidant balance in salt and/or arsenic-exposed wheaten_US
dc.typeArticleen_US

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