Acetic Acid Bacteria as Plant Growth Promoters

The Traits of the Plant Growth Promoting Acetic Acid Bacterium, Nguyenibacter Vanlangensis

“…Since the finding of the acetic acid bacteria that have characteristics of plant growth promoters, G. diazotrophicus was the most intensively surveyed and considered as a model of plant growth promoter in the family Acetobacteraceae [2,3,25]. The discovery of the genus Nguyenibacter was originated from screening and ecological studies on Gluconacetobacter plant growth promoting bacteria concerning rice field, an isolation source of the bacteria [5].…”

“…Plant growth promoting bacteria (PGPB) are defined as the free-living soil, rhizosphere, rhizoplane, and phylosphere bacteria that are, under some conditions, beneficial for plants [1][2][3]. They are capable of promoting plant growth by directly supplied substances for the metabolism of the plants through different mechanisms such as biological nitrogen fixation, phytohormone production, and mineral nutrient solubilization, or plant's tolerance improvement.…”

“…On the other way, PGPB indirectly promote the growth of plants by preventing the deleterious effects of phytopathogenic microorganisms by producing the substances that inhibit pathogens or alter the metabolism of the host plant to increase its resistance to pathogen infection. They are referred to as biocontrol-PGPB [1,3].…”

“…Among acetic acid bacteria classified in the family Acetobacteraceae, some species of the five genera, Acetobacter, Gluconacetobacter, Asaia, Swaminathania, and Komagataeibacter are recognized to possess some characteristics of PGPB [2][3][4]. Acetobacter peroxydans was the first Acetobacter species assigned as PGPB by the presence of nifH genes of both the type strain LMG 1635 T and isolates from wetland rice tissues [5].…”

Intracellular Polyphosphate Levels in <i>Gluconacetobacter diazotrophicus</i> Affect Tolerance to Abiotic Stressors and Biofilm Formation

“…However, environmental conditions, such as humidity, temperature, salinity, heavy metals, pesticides, and plant-related compounds, influence the effectiveness of PGPB before, during, and after the inoculation of plants (22). Among PGPB, Gluconacetobacter diazotrophicus , a N 2 -fixing endophyte that was initially isolated from sugarcane (27, 30), has been attracting increasing attention. The use of G. diazotrophicus as a bioinoculant still requires studies on its physiological properties, including how this bacterium responds to extracellular compounds.…”