Halophytic endophytes potentially contribute to the host's adaptation to adverse environments, improving its tolerance against various biotic and abiotic stresses. Here, we identified the culturable endophytic bacteria of three crop wild relative (CWR) halophytes: , , and . In the present study, the potential of these isolates to improve crop adaptations to various stresses was investigated, using both and approaches. Endophytic isolates were identified by their 16S rRNA gene sequence and evaluated for their ability to: grow in high levels of NaCl; inhibit the growth of the economically important phytopathogens , , and and the human pathogen provide salt tolerance ; and provide growth promoting effect . Genomes of selected isolates were sequenced. In total, 115 endophytic isolates were identified. At least 16 isolates demonstrated growth under increased salinity, plant growth promotion and phytopathogen antagonistic activity. Three showed suppression of growth. Furthermore, representatives of three novel species were identified: two species and one . This study provides proof-of-concept that the endophytes from CWR halophytes can be used as "bio-inoculants," for the enhancement of growth and stress tolerance in crops, including the high-salinity stress.
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| http://dx.doi.org/10.3389/fmicb.2021.681567 | DOI Listing |
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