Plant-growth-promoting rhizobacteria and arbuscular mycorrhizal fungi modify alleviation biochemical mechanisms in water-stressed plants

Functional Plant Biology : FPB
Josef KohlerAntonio Roldán

Abstract

This study examined the effect of inoculation with the plant-growth-promoting rhizobacterium (PGPR) Pseudomonas mendocina Palleroni, alone or in combination with an arbuscular mycorrhizal (AM) fungus, Glomus intraradices (Schenk & Smith) or Glomus mosseae (Nicol & Gerd.) Gerd. & Trappe, on antioxidant enzyme activities (superoxide dismutase, catalase and total peroxidase activities), phosphatase and nitrate reductase activities and solute accumulation in leaves of Lactuca sativa L. cv. Tafalla affected by three different levels of water stress. At moderate drought, bacterial inoculation and mycorrhizal inoculation with G. intraradices, alone or in combination, stimulated significantly nitrate reductase activity. At severe drought, fertilisation and P. mendocina inoculation, alone or in combination with either of the selected AM fungi, increased significantly phosphatase activity in lettuce roots and proline accumulation in leaves. Total peroxidase (POX) and catalase (CAT) activities increased in response to drought, whereas superoxide dismutase activity decreased. Inorganic fertilisation and both combined treatments of PGPR and AM fungus showed the highest values of leaf POX activity under severe drought. The highest CAT activi...Continue Reading

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Citations

Oct 18, 2012·Applied Microbiology and Biotechnology·D K Choudhary
Sep 11, 2018·The Open Microbiology Journal·Nicholas O Igiehon, Olubukola O Babalola
May 13, 2015·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Narsingh Bahadur SinghAmit Singh
Jan 8, 2020·Critical Reviews in Biotechnology·Sajjad AsafAhmed Al-Harrasi
Aug 27, 2009·Applied Microbiology and Biotechnology·Anthony O Adesemoye, Joseph W Kloepper
Jun 11, 2011·Biotechnology Letters·D K ChoudharyR K Gaur
Sep 6, 2018·Journal of Basic Microbiology·Hafsa NaseemNaeem Khan
Jun 10, 2010·FEMS Microbiology Ecology·Stéphane CompantAngela Sessitsch
Apr 3, 2012·Journal of Experimental Botany·Nicky J Atkinson, Peter E Urwin
Jan 29, 2021·Indian Journal of Microbiology·Caixia LiuYongzhong Chen
May 25, 2021·Journal of Ginseng Research·Jong-Pyo KangDeok-Chun Yang
Jul 13, 2021·3 Biotech·Nunna Sai Aparna DeviRamasamy Krishnamoorthy

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