Abstract
AbstractSalinity stress is a major threat that negatively affects plant growth and production in arid and semi- arid regions. Application of biofertilizers could mitigate this stress. Accordingly, a pot experiment was conducted on rapeseed grown under salinity stress (0, 5, 10, and 15 dS m−1) while considering the following additives: (1) AMF (non-inoculated and inoculated with Glomus versiforme) and (2) PGPR (non-inoculated and inoculated with Micrococcus yunnanensis). The present results showed that salinity stress led to significant reductions in growth, yield, yield components, and physiological attributes, while raising the Na+/K+ ratio. However, with the application of PGPR and AMF, the increased salinity tolerance of rapeseed resulted in a significant improvement in redox status and ion homeostasis. They considerably improved antioxidant enzymatic activity and plant nutrition status. Furthermore, the co-inoculation of PGPR and AMF increased chlorophyll a, chlorophyll b, carotenoids, photosynthesis rate, and percentage of rapeseed oil under 15 dS m−1 1.7-, 1.8-, 2.3-, 2.0- and 1.3-times, respectively, compared with the non-inoculation treatment. These findings indicate that the integral application of PGPR and AMF is essential for alleviating salinity stress.
Funder
Università degli Studi di Brescia
Publisher
Springer Science and Business Media LLC
Subject
Cell Biology,Plant Science,Genetics,Molecular Biology,Animal Science and Zoology,Biochemistry,Ecology, Evolution, Behavior and Systematics
Cited by
3 articles.
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