Combined amendment of immobilizers and the plant growth-promoting strain Burkholderia phytofirmans PsJN favours plant growth and reduces heavy metal uptake

Metabarcoding of Bacteria Associated with the Acute Oak Decline Syndrome in England

“…This resulted in loss of data for samples A5, A10, A22, A26, A31, R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10. Singletons detected in the rarefied dataset were kept [59][60][61][62]. This approach was chosen since rare taxa can play an important role in the environment [63][64][65][66], whilst their role in health or disease is unclear [67].…”

Root nodule symbiosis in Lotus japonicus drives the establishment of distinctive rhizosphere, root, and nodule bacterial communities

“…For example, Mimosa genera within South America and legumes from the Papilionoideae subfamily in South Africa are known to form an ancient and stable symbiosis with nitrogen-fixing Burkholderia lineages inside nodules (48)(49)(50). Members of the order Burkholderiales, which are dramatically depleted in the Lotus mutants, are also known for potent plant growth promotion activities in nonleguminous plants (51). The inclusion of legumes in a cropping rotation sequence in agriculture generally enriches the soil, but the symbiotic nitrogen fixation alone cannot explain the productivity increase in the subsequent crop (26).…”

Synergistic effects of plant growth-promoting Neorhizobium huautlense T1-17 and immobilizers on the growth and heavy metal accumulation of edible tissues of hot pepper

“…Touceda-González et al [22] also showed the synergetic effects of Burkholderia phytofirmans PsJN and immobilizers (gravel sludge and siderite bearing material) on the reduced NH 4 NO 3 -extractable Cd contents of the rhizosphere soils of two maize cultivars Falkone (Cd accumulater) and Fuxxol (Cd excluder) and Zn shoot concentration of the maize cultivar Fuxxol. However, no synergetic effects of B. phytofirmans PsJN and the immobilizers on the reduced NH 4 NO 3 -extractable Pb and Zn contents of the rhizosphere soils of the two maize cultivars and Cd and Pb shoot concentrations of the two maize cultivars were observed [22]. Furthermore, inoculation with B. phytofirmans PsJN did not significantly affect the NH 4 NO 3 -extractable Cd and Zn contents of the rhizosphere soils but significantly increased shoot Pb uptake of the two maize cultivars compared to the control [22].…”

“…Recently, combined amendment of immobilizers and plant growth-promoting bacteria was shown to promote plant growth and reduce heavy metal uptake [21,22]. Bacillus subtilis 38 mixed with NovoGro (a bio-fertilizer produced from centrifuged fermentation broth through heating and lime amendment to inactivate all microorganisms) exhibited a synergetic effect on the immobilization of heavy metals in soil [21].…”

“…In addition, bacteria could also interact directly with the heavy metals to reduce their toxicity and/or modulate their bioavailability [20]. Although heavy metal immobilizers and bacteria have been reported to be used for heavy metal immobilization in soil and reduced metal uptake of plants in the heavy metal-contaminated soils, little is known about the effects of immobilizers + plant growth-promoting bacteria on the growth and heavy metal accumulation of crops in the heavy metal-contaminated environments [21,22]. Furthermore, no study has been carried on plant growth and edible tissue (fruit) heavy metal uptake of hot pepper in the presence of plant growth-promoting bacteria and immobilizers (vermiculite and peat) and the mechanisms involved.…”