Azospirillum brasilense Az39 restricts cadmium entrance into wheat plants and mitigates cadmium stress
- Vazquez, Analia
- Zawoznik, Myriam Sara
- Benavides, Maria Patricia
- Groppa, María Daniela
DOIAbstract
In this work, we tested if inoculation with the plant growth-promoting rhizobacteria Azospirillum brasilense strain Az39 alleviates Cd2+ stress in wheat seedlings grown under controlled conditions. Growth, total N, N-related metabolites/enzymes, and oxidative stress parameters were measured. Additionally, the usefulness of a real-time PCR protocol to screen the preferred colonization site of the introduced microorganism was evaluated. Inoculated plants demonstrated mitigation of cadmium-induced adverse effects on plant growth and less reactive oxygen species accumulation in their roots by the end of the experiment, 28 days after sowing. Cd addition resulted in lower NO3− content in the leaves and higher NO3− content in the roots, and a sign...
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