Improvement of Growth, Yield, and Pigmentation of Mung Bean Plants UsingOchrobactrum intermediumCP‐2 as Bioinoculant

Abstract

The selection of strains for production of biofertilizers is of primary importance. A strain with diverse growth promoting activities, especially the nitrogen fixation and phosphate solubilization, has highest preference over those with just one activity. In the present study, a symbiotic nitrogen fixing bacterium was isolated from the root nodules of chickpea and characterized as Ochrobactrum intermedium CP‐2 on the basis of biochemical tests and partial 16S rRNA gene sequencing and blast analysis. Besides fixing nitrogen, the CP‐2 strain also showed the ability of phosphate solubilization and indole acetic acid production. It was also found positive for ammonia and siderophore production. A significant increase in the lengths of radical and plumule and percent germination was observed when the rhizobacterial strain selected for the study was inoculated in vitro for seed assay. O. intermedium CP‐2 significantly (p < 0.05) increased shoot and root lengths, fresh and dry weights, and yield of mung bean plants both in pot trials and under field conditions. The nutrient uptake and microbial count also increased significantly with inoculation of the strain during the experiment. This study revealed the positive effect of O. intermedium CP‐2 on mung bean crop.

Antagonistic and growth-promoting potential of multifarious bacterial endophytes against Fusarium wilt of chickpea

“…Maheshwari et al (2019) and humans (Hu et al 2020). The results of the present study were in accordance with those of Lee et al (2020) who reported plant growth-promoting activity of Brucella anthropi strain T16R-87 and Saini et al (2017) who observed the ability of Ochrobactrum intermedium CP-2 chickpea isolate to produce siderophore. Endophytic bacterial isolate CRBE1, identified as Priestia megaterium in the present study, was previously known as Bacillus megaterium (Biedendieck et al 2021), produced HCN along with ACC utilization, while isolate CRBE7 (Microbactrum haematophilum) showed positive reaction for siderophore and HCN production.…”

Exploration of plant growth‐promoting endophytic bacteria from Pisum sativum and Cicer arietinum from South–West Haryana

“…The genera Ochrobactrum belonging to subclass alpha (α) proteobacteria have. been found as an endophyte in various leguminous plants [44]. The occurrence of genera Paenochrobactrum (subclass α‐proteobacteria) as an endophyte has been reported in a single study from the shrub Litsea cubeba [45].…”