Enhanced performance ofBacillus megateriumOSR-3 in combination with putrescine ammeliorated hydrocarbon stress inNicotiana tabacum

文献类型： 外文期刊

第一作者： Tariq, Muniba

作者： Tariq, Muniba;Shah, Anis Ali;Yasin, Nasim Ahmad;Ahmad, Aqeel;Rizwan, Muhammad

作者机构：

关键词： Crude oil; hydrocarbon; N; tabacum; petroleum; PGPR; stress

期刊名称：INTERNATIONAL JOURNAL OF PHYTOREMEDIATION （ 影响因子：3.212； 五年影响因子：3.275 ）

ISSN： 1522-6514

年卷期：

页码：

收录情况： SCI

摘要： Hydrocarbon stress (HS) has been causing decreased plant growth and productivity. Putrescine (Put) and growth promoting microbes are vital for plant growth and development under hydrocarbon stress. Current research work was carried out to evaluate the potential ofBacillus megateriumOSR-3 alone and in combination with Put to alleviate HS inNicotiana tabacum(L.). The crude petroleum contaminated soil significantly reduced growth attributes ofN. tabacum.B. megateriumOSR-3 inoculated plants subjected to HS exhibited improved photosynthetic rate, gas exchange characteristics, poline contents and protein level. Furthermore, bacterial inoculation enhanced the antioxidative activity of superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) in tobacco plants subjected to HS. The HS alleviation inB. megateriumOSR-3 inoculatedN. tabacumcan be credited to the heightened activity of antioxidative enzymes, reduction in hydrogen peroxide (H2O2) and abridged synthesis of malondialdehyde (MDA). The increased synthesis of indole acetic acid (IAA) in HS stressedN. tabacumplants treated with co-application ofB. megateriumOSR-3 and Put attenuated toxicity and amplified growth of plants. Additionally, the co-application ofB. megateriumOSR-3 and Put also upregulated the activity of antioxidative enzymes and induced augmented level of proline and IAA in plants under HS regimes. Current research provides novel insight into the potential and mechanism ofB. megateriumOSR-3 and Put in mitigation of HS inN. tabacumplants.

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