614 KB28 KB200420252023?hetverikov, SergeyFeoktistova, ArinaSharipov, DanilTimergalin, Maksimštevilka:1letnik:1197 str.COBISSID_HOST:154881283ISSN:1854-1941URN:URN:NBN:SI:doc-FV6YJ77JenZaložba Univerze v LjubljaniActa agriculturae Slovenicaauksinski herbicidiauxinic herbicidebacterial strainbakterijski sevMDAplant hormonespomanjkanje vodeprolinprolinerastlinski hormoniwater deficiencyMitigation of the negative effect of auxinic herbicide by bacterial suspen-sion of Pseudomonas protegens DA1.2 in wheat plants under drought conditions|Effect of auxin-producing bacterial strain (Pseudomonas protegens DA1.2) was investigated under condi-tions of drought and herbicide treatment in wheat plants. Posi-tive effect of the bacterial suspension on wheat plants treated with auxinic herbicide under drought conditions was mani-fested in reducing the content of malondialdehyde and proline, preventing inhibition of plant growth and normalizing chlorophyll content. Under combined stress, changes in concentrations and redistribution of phytohormones in plants were de-tected. An imbalance in auxin distribution between shoots and roots could be the reason for the decrease in plant resistance to drought in combination with the herbicide. Treatment of plants with the bacterial suspension restored normal shoot-to-root ratio of auxins in plants. Thus, this bacterial strain showed the properties of synthetic auxin antidotes and can be recommended for optimizing the technology of herbicide application under drought conditionsUčinek sevov bakterije, ki tvorijo auksin (Pseu-domonas protegens DA1.2) je bil preučevan pri pšenici v razme-rah suše in obravnavanja s herbicidi. Pozitivni učinki suspenzije bakterij na pšenici, ki je bila tretirana s herbicidi na osnovi auksina so se pokazali v zmanjšanju vsebnosti malondialdehida in prolina, kar je preprečilo zaviranje rasti rastlin in normaliziralo vsebnost klorofila. V razmerah kombiniranega stresa so se pojavile spremembe v koncentraciji in redistribuciji rastlinskih hormonov v tretiranih rastlinah. Neravnovesje v porazdelitvi auksina med poganjki in koreninami bi lahko bilo vzrok za zmanjšanje odpornosti rastlin na sušo v kombinaciji s herbicidi. Obravnavanje rastlin s suspenzijo bakterij je ohranilo normal-no razmerje v vsebnosti auksinov med poganjki in koreninami. Zaključimo lahko, da je ta bakterijski sev pokazal lastnosti antidotov sintetičnih auksinov in bi ga lahko priporočili za optimiziranje tehnologije uporabe herbicidov v razmerah sušeTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Biotehniška fakulteta