TAILIEUCHUNG - Salt stress and hydroxyectoine enhance phosphate solubilisation and plant colonisation capacity of Kosakonia radicincitans

Gram-negative bacterial endophytes have attracted research interest caused by their advantageous over epiphytic bacteria in plant nutrition and protection. However, research on these typically Gram-negative endophytes has deficiencies concerning the role of cultivation and pre-formulation strategies on further plant colonisation capabilities. Besides, the influence of cultivation conditions and osmotic stress within bacterial endophytes on their phosphate solubilising ability has not yet been addressed. By preconditioning cells with an osmoadaptation and a hydroxyectoine accumulation approach, this research aimed at enhancing the capability of the plant growth promoting bacterium Kosakonia radicincitans strain DSM 16656T to both solubilise phosphate and colonise plant seedlings. The results showed that halotolerant bacterial phenotypes increased the root-colonising capability by approximately 3-fold and presented growth-promoting effects in radish plants. Interestingly, findings also demonstrated that salt stress in the culture media along with the accumulation of hydroxyectoine led to an increase in the in vitro phosphate-solubilising ability by affecting the production of acid phosphatases, from to U mg-1 for non-salt stressed cells and hydroxyectoine-added cells respectively. | Salt stress and hydroxyectoine enhance phosphate solubilisation and plant colonisation capacity of Kosakonia radicincitans

• Sinh học
• Bacterial endophytes
• Compatible solutes
• Phosphate solubilisation
• Plant tissue colonisation
• Kosakonia radicincitans
• Plant growth promotion
• Vitro condition
• Evaluation of bacterial endophytes
• Indirectly by several mechanisms
• Micro organism
• Bacterial endophytes against pythium sp
• Ginger in Meghalaya
• Soft rot of ginger
• In vitro efficacy
• Plant growth promotion traits
• Isolation and evaluation
• Multi trait novel bacterial endophytes
• Root nodules of mungbean
• Mungbean (Vigna radiata)
• Endophytic bacteria
• Small millets
• Bacterial endophytes isolated from small millets
• Drought tolerance activity
• Phytohormone production
• Identification of putative bacterial endophytes
• Plants in hot springs
• Vitrofor morphological features
• Anti fungal
• Bioactive compounds
• Natural products
• Their natural products
• Antimicrobial activity
• Phosphate solubilization
• Plant growth promoting bacteria
• Teucrium polium L
• Zea mays L
• Rhizophora stylosa
• Antioxidant activity
• Mangrove plant Rhizophora stylosa
• Endophyte bacteria
• Fruit yield
• Lysinibacillus sp isolate 1TH16a
• IAA production
• BMC Plant Biology
• Phytopathogenic fungi
• Dirty panicle disease
• Seed stock
• Seed biopriming
• Nitrogen fixation
• Siderophore production
• Plant growth regulators
• Soybean yield
• Summary of Doctoral Thesis in Agriculture
• Summary of Doctoral Thesis
• Thesis in Agriculture
• Plant science
• Endophytic bacteria strains
• The role of plant endophytes