Role of plant growth promoting rhizobacteria in the alleviation of lead toxicity to <i>Pisum sativum</i> L.

Shabaan, Muhammad; Asghar, Hafiz Naeem; Akhtar, Muhammad Javed; Ali, Shafaqat; Ejaz, Mukkaram

doi:10.1080/15226514.2020.1859988

Cited by 41 publications

(16 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The bacterial strain was identified through molecular approach following Edwards [53] primers. The identified strain has already been used to improve growth and productivity of several crops [54,55], including chickpea [43,47]. Different concentrations of B were used, i.e., 0, 60, 120 and 180 mM, along with Bacillus sp.…”

Section: Experimental Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Soil-Applied Boron Combined with Boron-Tolerant Bacteria (Bacillus sp. MN54) Improve Root Proliferation and Nodulation, Yield and Agronomic Grain Biofortification of Chickpea (Cicer arietinum L.)

et al. 2021

View full text Add to dashboard Cite

Chickpea is widely cultivated on calcareous sandy soils in arid and semi-arid regions of Pakistan; however, widespread boron (B) deficiencies in these soils significantly decreases its productivity. Soil application of B could improve chickpea yield and grain-B concentration. However, optimizing suitable B level is necessary due to a narrow deficiency and toxicity range of B. Nonetheless, the co-application of B-tolerant bacteria (BTB) and synthetic B fertilizer could be helpful in obtaining higher chickpea yields and grain-B concentration. Therefore, this study optimized the level of soil applied B along with BTB, (i.e., Bacillus sp. MN54) to improve growth, yield and grain-B concentrations of chickpea. The B concentrations included in the study were 0.00 (control), 0.25, 0.50, 0.75 and 1.00 mg B kg−1 soil combined with or without Bacillus sp. MN54 inoculation. Soil application of B significantly improved root system, nodulation, yield and grain-B concentration, and Bacillus sp. MN54 inoculation further improved these traits. Moreover, B application at a lower dose (0.25 mg B kg−1 soil) with BTB inoculation recorded the highest improvements in root system (longer roots with more roots’ proliferation), growth, nodulation and grain yield. However, the highest grain-B concentration was recorded under a higher B level (0.75 mg B kg−1 soil) included in the study. Soil application of 0.25 mg B kg−1 with Bacillus sp. MN54 inoculation improved growth and yield-related traits, especially nodule population (81%), number of pods plant−1 (38%), number of grains plant−1 (65%) and grain yield (47%) compared with control treatment. However, the grain-B concentration was higher under the highest B level (1.00 mg kg−1 soil) with Bacillus sp. MN54 inoculation. In conclusion, soil application of 0.25 mg B kg−1 with Bacillus sp. MN54 inoculation is a pragmatic option to improve the root system, nodule population, seedling growth, yield and agronomic grain-B biofortification of chickpea.

show abstract

Section: Experimental Materialsmentioning

confidence: 99%

“…The lowest growth reduction was observed at higher B concentrations (180 mM), with the presence of strain. The inoculated seeds observed a bacterial count of 10 8 per seed [55]. Selected inoculum was prepared in 500-mL Erlenmeyer flask containing 200 mL 10% tryptic soya broth.…”

Section: Experimental Materialsmentioning

confidence: 99%

Soil-Applied Boron Combined with Boron-Tolerant Bacteria (Bacillus sp. MN54) Improve Root Proliferation and Nodulation, Yield and Agronomic Grain Biofortification of Chickpea (Cicer arietinum L.)

et al. 2021

View full text Add to dashboard Cite

show abstract

“…For instance Manzoor et al (2019) reported that Pseudomonas PG‐12, together with the phyto‐hormones IAA and gibberellin, was a suitable isolate for induction of plant growth in lead‐contaminated soils because the isolate showed resistance to many metals along with phosphate‐solubilizing activity. Shabaan et al (2021) indicated that Pb‐tolerant PGPR strain decreased the harmful impacts of Pb at the concentrations of 0, 250, 500 and 750 mg kg −1 on plant growth by 21–84%. Abdelkrim et al (2018) showed that Pb application resulted in the induction of lead immediate absorption by Lathyrus sativus with the highest concentrations by gradually increasing the lead concentration.…”

Section: Discussionmentioning

confidence: 99%

Identification of lead-resistant rhizobacteria of Carthamus tinctorius and their effects on lead absorption of Sunflower

Shahraki

Mohammadi-Sichani

Ranjbar

2022

Journal of Applied Microbiology

View full text Add to dashboard Cite

Aims: Using rhizobacteria as plant growth-promoting agents for improving heavymetal phytoremediation processes in contaminated soil has attracted a lot of attention mainly because of their eco-friendliness. The aim of this study was the evaluation of lead phytoremediation by Carthamus tinctorius improved with the isolated and molecularly identified lead-resistant rhizobacteria. Methods and Results: Rhizobacteria were isolated from C. tinctorius root and was identified using macroscopic and microscopic characteristics, biochemical testing and PCR. Then, the indole acetic acid production and phosphate-solubilizing activity were determined. Finally, the amount of lead in the plant was measured by atomic absorption method. Five strains of Bacillus cereus, Bacillus muralis, Bacillus sp., Pseudomonas fluorescens and Brevibacterium frigoritolerans with the ability of mineral phosphate solubilizing, high levels of indole acetic acid production and resistance to lead were isolated from the rhizosphere of C. tinctorius. The amount of produced indole acetic acid and the level of phosphate solubilizing by the isolates were 7.1-69.54 µg ml −1 and 91-147.3 µg ml −1 respectively. Lead assimilation in aerial part of safflower ranged from 925 to 2175 ppm. P. fluorescens and B. cereus strains had the highest effect on Lead assimilation with 2175 and 1862 ppm respectively. Conclusions: The results showed that different bacterial treatments influenced the rate of lead absorption by C. tinctorius exposed to lead stress. Significance and Impact of the Study: Use of rhizosphere isolates of C. tinctorius can improve phytoremediation capability and lead absorption in leadcontaminated soil.

show abstract

“…Large quantities of these harmful substances pose a severe threat to humans and other organisms in the environment, and their residues in medicinal materials adversely affect clinical safety. Soil microorganisms can act as the restorers of contaminated soil, removing the exogenous chemicals and reducing their accumulation and toxicity in plants [ 318 , 319 , 320 ]. The enzymatic systems, including hydrolytic enzymes, esterases, nitrilases, oxygenases, dehalogenases amidases, and carbon–carbon lyases, facilitate the biodegradation of pesticides and organic macromolecular pollutants to non-toxic or low toxic small molecules [ 321 ].…”

Section: Function Of Soil Microorganisms In Growth Promotion and Qual...mentioning

confidence: 99%

Contributions of Beneficial Microorganisms in Soil Remediation and Quality Improvement of Medicinal Plants

Gang

Ren

Bai

et al. 2022

Plants

View full text Add to dashboard Cite

Medicinal plants (MPs) are important resources widely used in the treatment and prevention of diseases and have attracted much attention owing to their significant antiviral, anti-inflammatory, antioxidant and other activities. However, soil degradation, caused by continuous cropping, excessive chemical fertilizers and pesticide residues and heavy metal contamination, seriously restricts the growth and quality formation of MPs. Microorganisms, as the major biota in soil, play a critical role in the restoration of the land ecosystem. Rhizosphere microecology directly or indirectly affects the growth and development, metabolic regulation and active ingredient accumulation of MPs. Microbial resources, with the advantages of economic efficiency, harmless to environment and non-toxic to organisms, have been recommended as a promising alternative to conventional fertilizers and pesticides. The introduction of beneficial microbes promotes the adaptability of MPs to adversity stress by enhancing soil fertility, inhibiting pathogens and inducing systemic resistance. On the other hand, it can improve the medicinal quality by removing soil pollutants, reducing the absorption and accumulation of harmful substances and regulating the synthesis of secondary metabolites. The ecological and economic benefits of the soil microbiome in agricultural practices are increasingly recognized, but the current understanding of the interaction between soil conditions, root exudates and microbial communities and the mechanism of rhizosphere microecology affecting the secondary metabolism of MPs is still quite limited. More research is needed to investigate the effects of the microbiome on the growth and quality of different medicinal species. Therefore, the present review summarizes the main soil issues in medicinal plant cultivation, the functions of microbes in soil remediation and plant growth promotion and the potential mechanism to further guide the use of microbial resources to promote the ecological cultivation and sustainable development of MPs.

show abstract

Role of plant growth promoting rhizobacteria in the alleviation of lead toxicity to Pisum sativum L.

Cited by 41 publications

References 47 publications

Soil-Applied Boron Combined with Boron-Tolerant Bacteria (Bacillus sp. MN54) Improve Root Proliferation and Nodulation, Yield and Agronomic Grain Biofortification of Chickpea (Cicer arietinum L.)

Soil-Applied Boron Combined with Boron-Tolerant Bacteria (Bacillus sp. MN54) Improve Root Proliferation and Nodulation, Yield and Agronomic Grain Biofortification of Chickpea (Cicer arietinum L.)

Identification of lead-resistant rhizobacteria of Carthamus tinctorius and their effects on lead absorption of Sunflower

Contributions of Beneficial Microorganisms in Soil Remediation and Quality Improvement of Medicinal Plants

Contact Info

Product

Resources

About