Native plant growth promoting bacteria Bacillus thuringiensis and mixed or individual mycorrhizal species improved drought tolerance and oxidative metabolism in Lavandula dentata plants

Journal of Plant Physiology
Elisabeth ArmadaR Azcón

Abstract

This study evaluates the responses of Lavandula dentata under drought conditions to the inoculation with single autochthonous arbuscular mycorrhizal (AM) fungus (five fungal strains) or with their mixture and the effects of these inocula with a native Bacillus thuringiensis (endophytic bacteria). These microorganisms were drought tolerant and in general, increased plant growth and nutrition. Particularly, the AM fungal mixture and B. thuringiensis maximized plant biomass and compensated drought stress as values of antioxidant activities [superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase APX)] shown. The AMF-bacteria interactions highly reduced the plant oxidative damage of lipids [malondialdehyde (MDA)] and increased the mycorrhizal development (mainly arbuscular formation representative of symbiotic functionality). These microbial interactions explain the highest potential of dually inoculated plants to tolerate drought stress. B. thuringiensis "in vitro" under osmotic stress does not reduce its PGPB (plant growth promoting bacteria) abilities as indole acetic acid (IAA) and ACC deaminase production and phosphate solubilization indicating its capacity to improve plant growth under stress conditions. Each one ...Continue Reading

References

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Citations

Jul 28, 2016·Frontiers in Plant Science·Karl J KunertChristine H Foyer
May 18, 2018·FEMS Microbiology Ecology·Elisabeth ArmadaEiko E Kuramae
Feb 27, 2017·Applied Microbiology and Biotechnology·Gholamreza Salehi JouzaniReza Sharafi
Dec 9, 2017·Chemical Society Reviews·Fernanda Oliveira ChagasMônica Tallarico Pupo
Apr 16, 2019·Frontiers in Microbiology·María J Ek-RamosPatricia Tamez-Guerra
Dec 5, 2019·Fungal biology and biotechnology·Anuroopa NanjundappaHillol Chakdar
Jul 22, 2018·Applied Microbiology and Biotechnology·Matthew Chekwube Enebe, Olubukola Oluranti Babalola
Feb 2, 2021·Frontiers in Microbiology·Maria Leticia BonatelliMaria Carolina Quecine
Mar 7, 2021·Plants·Arun Kumar DevarajanSabarinathan Kuttalingam Gopalasubramanian
Jun 10, 2021·Journal of Economic Entomology·Juliana Barroso SilvaGuilherme Duarte Rossi

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