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- Title
Induction of Osmoregulation and Modulation of Salt Stress in Acacia gerrardii Benth. by Arbuscular Mycorrhizal Fungi and Bacillus subtilis (BERA 71).
- Authors
Hashem, Abeer; Abd_Allah, E. F.; Alqarawi, A. A.; Al-Huqail, A. A.; Shah, M. A.
- Abstract
The role of soil microbiota in plant stress management, though speculated a lot, is still far from being completely understood. We conducted a greenhouse experiment to examine synergistic impact of plant growth promoting rhizobacterium, Bacillus subtilis (BERA 71), and arbuscular mycorrhizal fungi (AMF) (Claroideoglomus etunicatum; Rhizophagus intraradices; and Funneliformis mosseae) to induce acquired systemic resistance in Talh tree (Acacia gerrardii Benth.) against adverse impact of salt stress. Compared to the control, the BERA 71 treatment significantly enhanced root colonization intensity by AMF, in both presence and absence of salt. We also found positive synergistic interaction between B. subtilis and AMF vis-a-vis improvement in the nutritional value in terms of increase in total lipids, phenols, and fiber content. The AMF and BERA 71 inoculated plants showed increased content of osmoprotectants such as glycine, betaine, and proline, though lipid peroxidation was reduced probably as a mechanism of salt tolerance. Furthermore, the application of bioinoculants to Talh tree turned out to be potentially beneficial in ameliorating the deleterious impact of salinity on plant metabolism, probably by modulating the osmoregulatory system (glycine betaine, proline, and phenols) and antioxidant enzymes system (SOD, CAT, POD, GR, APX, DHAR, MDAHR, and GSNOR).
- Subjects
LIPID analysis; ANTIOXIDANTS; BACILLUS (Bacteria); DIETARY fiber; FUNGI; GLYCINE; HYDROGEN peroxide; LIPID peroxidation (Biology); PLANT physiology; PLANTS; POLYPHENOLS; PROBABILITY theory; PROLINE; RESEARCH funding; PLANT roots; SALT; SOILS; SPECTROPHOTOMETRY; STATISTICS; PHYSIOLOGICAL stress; WATER-electrolyte balance (Physiology); MALONDIALDEHYDE; DATA analysis; BETAINE; DATA analysis software; NUTRITIONAL value; DESCRIPTIVE statistics; ONE-way analysis of variance
- Publication
BioMed Research International, 2016, Vol 2016, p1
- ISSN
2314-6133
- Publication type
Article
- DOI
10.1155/2016/6294098