Characterization of rhizobia isolated from leguminous plants and their impact on the growth of ICCV 2 variety of chickpea (Cicer arietinum L.)

Mir, Mohammad Imran; Kumar, B. Kiran; Gopalakrishnan, Subramaniam; Srinivas, V.; Hameeda, Bee

doi:10.1016/j.heliyon.2021.e08321

Cited by 20 publications

(13 citation statements)

References 79 publications

(128 reference statements)

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“…In our study, all the tested free-living rhizobia showed positive results for ammonia production. Other studies confirmed this rhizobial ability [ 28 , 31 ]. Additionally, it was reported that the accumulation of ammonia in soil by PGPB reduces the development of pathogens [ 70 ].…”

Section: Discussionsupporting

confidence: 72%

“…Plant growth promoting rhizobia can secrete metabolites that stimulate plant growth and play important roles in environmental stress tolerance [ 13 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ]. Application of PGP rhizobia increase plant survival in the presence of hazardous levels of metals mainly by counteracting biomass decrease by improved mineral nutrition and secretion of phytohormones, enhance the production of plant growth regulators (auxins, gibberellins, cytokinins), and stimulate photosynthesis and antioxidant activity [ 13 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ]. Moreover, rhizobia also support plant adaptation to metal-polluted sites through chelation of the metals in the soils [ 14 , 29 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

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Potential of Rhizobia Nodulating Anthyllis vulneraria L. from Ultramafic Soil as Plant Growth Promoting Bacteria Alleviating Nickel Stress in Arabidopsis thaliana L.

Sujkowska-Rybkowska

Rusaczonek

Kasowska

et al. 2022

IJMS

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Rhizobia, which enter into symbiosis with legumes, can also interact with non-legumes and promote plant growth. In this paper, we explored the effects of nickel (Ni, 200 µM) on Arabidopsis thaliana (Col-0) inoculated with plant growth-promoting (PGP) rhizobia nodulating ultramafic Anthyllis vulneraria. The isolated PGP strains tolerant to Ni were identified as Rhizobium sp. and Bradyrhizobium sp. The isolates highly differed in their PGP abilities and Ni resistance. Without Ni-stress, the plants inoculated with most isolates grew better and had higher photosynthetic efficiency than non-inoculated controls. Nickel treatment increased Ni concentration in inoculated plants. Plant growth, leaf anatomy, chloroplast ultrastructure, efficiency of photosynthesis, and antioxidant defense system activity were significantly impaired by Ni, however, the majority of these effects were diminished in plants inoculated with the most effective PGP rhizobia. Real-time PCR revealed an increased expression level of genes involved in auxin and gibberellin biosynthesis in the inoculated, Ni-treated plants, and this may have improved shoot and root growth after inoculation with effective isolates. Our results also suggest a positive correlation between Ni-stress parameters and antioxidant defense system activity, and also between the effectiveness of photosynthesis and plant growth parameters. We showed that the selected rhizobia, naturally nodulating Anthyllis on Ni-rich ultramafic soils can promote Arabidopsis growth and increase plant tolerance to Ni by improving different physiological and biochemical mechanisms.

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Section: Discussionsupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Potential of Rhizobia Nodulating Anthyllis vulneraria L. from Ultramafic Soil as Plant Growth Promoting Bacteria Alleviating Nickel Stress in Arabidopsis thaliana L.

Sujkowska-Rybkowska

Rusaczonek

Kasowska

et al. 2022

IJMS

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“…This apparent finding was also confirmed quantitatively by AAS wherein JAS1 could offer almost 200 μg ml −1 week −1 solubilization of insoluble ZnO. This PGP trait is reported for only one AP strain IHCP2 solely using the plate method inferring a lower solubilization index (1.87 cm) 39 .…”

Section: Resultssupporting

confidence: 63%

An exopolysaccharide-producing novel Agrobacterium pusense strain JAS1 isolated from snake plant enhances plant growth and soil water retention

Kaur

Mudgal

Chand

et al. 2022

Sci Rep

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A peculiar bacterial growth was very often noticed in leaf-initiated tissue cultures of Sansevieriatrifasciata, a succulent belonging to the Asparagaceae family. The isolate left trails of some highly viscous material on the walls of the suspension vessels or developed a thick overlay on semisolid media without adversities in plant growth. FTIR identified this substance to be an extracellular polysaccharide. Various morphological, biochemical tests, and molecular analyses using 16S rRNA, atpD, and recA genes characterized this isolate JAS1 as a novel strain of Agrobacteriumpusense. Its mucoidal growth over Murashige and Skoog media yielded enormous exopolysaccharide (7252 mg l−1), while in nutrient agar it only developed fast-growing swarms. As a qualifying plant growth-promoting bacteria, it produces significant indole-3-acetic acid (86.95 mg l−1), gibberellic acid (172.98 mg l−1), ammonia (42.66 µmol ml−1). Besides, it produces siderophores, 1-aminocyclopropane-1-carboxylicaciddeaminase, fixes nitrogen, forms biofilms, and productively solubilizes soil inorganic phosphates, and zinc. Under various treatments with JAS1, wheat and chickpea resulted in significantly enhanced shoot and root growth parameters. PGP effects of JAS1 positively enhanced plants’ physiological growth parameters reflecting significant increments in overall chlorophyll, carotenoids, proline, phenols, flavonoids, and sugar contents. In addition, the isolated strain maintained both plant and soil health under an intermittent soil drying regime, probably by both its PGP and EPS production attributes, respectively.

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“…S. maltophilia and S. pavanii have been reported to possess different PGP attributes and have also been implicated to alleviate biotic and abiotic stresses (Stamford et al, 2002;Singh and Jha, 2017;Alexander et al, 2019;Singh S. et al, 2020;Roy Chowdhury, 2020). The potential of R. pusense as PGPR has also been reported by different workers (Sukweenadhi et al, 2019;Chaudhary et al, 2021;Mir et al, 2021). Since the bioinoculants performed well upon seed inoculation, it represents high degree of rhizosphere competence which is the first and foremost requirement for developing a successful microbial inoculant (Singh DP.…”

Section: Discussionmentioning

confidence: 70%

Sulfur-Oxidizing Bacteria From Coal Mine Enhance Sulfur Nutrition in Pigeonpea (Cajanus cajan L.)

Malviya

Varma²,

Singh³

et al. 2022

Front. Environ. Sci.

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The present investigation was carried out to isolate, identify, and characterize sulfur-oxidizing bacteria (SOB) from coal mines and to evaluate the efficient strains for their ability to influence plant growth and S uptake in pigeonpea. Thirteen bacterial isolates belonging to Stenotrophomonas maltophilia (2), Stenotrophomonas pavanii (2), Rhizobium pusense (5), Bacillus velezensis (2), and Paenibacillus massiliensis (2) were obtained. Among these, seven strains that could reduce the pH of thiosulfate broth were further characterized for sulfur oxidation, plant growth-promoting (PGP) attributes, and in planta studies. Among the seven strains characterized, maximum sulfate ion was recorded for S. maltophilia DRC-18-7A (311.43 mg L−1) closely followed by S. pavanii DRC-18-7B (273.44 mg L−1) and S. maltophilia DRC-18-10 (265.75 mg L−1) after 21 days of inoculation. Among the PGP attributes quantified, maximum P solubilization was recorded in case of S. maltophilia DRC-18-7A (24.39 μg ml−1), while highest siderophore production and IAA production were recorded in S. maltophilia DRC-18-10 (14.25%) and R. pusense DRC-18-25 (15.21 μg ml−1), respectively. S. maltophilia DRC-18-7A closely followed by S. pavanii DRC-18-7B outperformed others in enhancing seed germination (%) and vigour indices. Results clearly indicated that microbial inoculants colonized the plant roots and developed biofilm on the root surface. It was further observed that plants treated with microbial inoculants induce an early formation of secondary and tertiary roots in the pigeonpea compared to the untreated control which was further confirmed by assessing the root architecture using the root scanner. Inoculation of these two strains to pigeonpea significantly enhanced plant growth parameters, the activity of reactive oxygen scavenging (ROS) enzymes, and accumulation of flavonoids, carotenoids, and proline both under sterilized and non-sterilized growth medium (sand and soil in 1:3 ratio). The application of microbial inoculants significantly increased the uptake of nitrogen, phosphorus, potassium, and sulfur in plant shoots. Further, transcript level of phosphate, potassium, and sulfur transporter genes significantly increases upon microbial inoculation leading to increased uptake and translocation of P, K, and S in the pigeonpea. The results indicate that S. maltophilia DRC-18-7A and S. pavanii DRC-18-7B could be recommended as inoculants for pigeonpea to improve its growth and sulfur nutrition.

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Characterization of rhizobia isolated from leguminous plants and their impact on the growth of ICCV 2 variety of chickpea (Cicer arietinum L.)

Cited by 20 publications

References 79 publications

Potential of Rhizobia Nodulating Anthyllis vulneraria L. from Ultramafic Soil as Plant Growth Promoting Bacteria Alleviating Nickel Stress in Arabidopsis thaliana L.

Potential of Rhizobia Nodulating Anthyllis vulneraria L. from Ultramafic Soil as Plant Growth Promoting Bacteria Alleviating Nickel Stress in Arabidopsis thaliana L.

An exopolysaccharide-producing novel Agrobacterium pusense strain JAS1 isolated from snake plant enhances plant growth and soil water retention

Sulfur-Oxidizing Bacteria From Coal Mine Enhance Sulfur Nutrition in Pigeonpea (Cajanus cajan L.)

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