PGPR secondary metabolites: an active syrup for improvement of plant health

Patel, Jai Singh; Yadav, Sudheer Kumar; Bajpai, Raina; Teli, Basavaraj; Rashid, Mahtab

doi:10.1016/b978-0-12-818469-1.00017-1

Cited by 12 publications

(5 citation statements)

References 86 publications

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“…Moreover, inoculated rhizobacteria may induce subtle microbiota shifts or indirect guild shifts of more abundant representatives causing observed phenotypes. As has been previously demonstrated, several rhizobacteria species are capable to produce secondary metabolites capable to modulate both microbiota structure and plant-microbe interactions [44].…”

Section: Discussionmentioning

confidence: 85%

Plant Growth and Microbiota Structural Effects of Rhizobacteria Inoculation on Mahogany (Swietenia macrophylla King [Meliaceae]) under Nursery Conditions

Trujillo-Elisea

Labrín-Sotomayor

Becerra-Lucio

et al. 2022

Forests

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Swietenia macrophylla is a tropical timber species of ecological and economic importance. However, its slow vegetative growth and root development in nurseries strongly limit its production. This study evaluated the effect of 10 rhizobacteria strains during the early stages of production of S. macrophylla. Superficially disinfected seeds were inoculated with rhizobacteria under commercial nursery conditions. Inoculation was complemented by initial fertilization without growth regulators, fungicides, or bactericides. The results indicate that the rhizobacteria strains induce different responses in plants. Significant differences in plant biomass and root architecture were found. Treatments inoculated with Bacillus sp., Bacillus polyfermenticus, and Bacillus siamensis strains; showed an increase of up to 41% (dry weight). Plants increased root biomass by 30% when inoculated with S. siamensis. All inoculated strains were identified as members of the genus Bacillus spp., and their presence three months after inoculation was assessed by 16S rRNA gene-based amplicon massive sequencing. We found that Bacillus sp. genus was only present in inoculated treatments, suggesting that inoculated bacteria could establish themselves successfully as part of the microbiota. These results support the advantages of using PGPRs in commercial tropical tree production.

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Section: Discussionmentioning

confidence: 85%

Plant Growth and Microbiota Structural Effects of Rhizobacteria Inoculation on Mahogany (Swietenia macrophylla King [Meliaceae]) under Nursery Conditions

Trujillo-Elisea

Labrín-Sotomayor

Becerra-Lucio

et al. 2022

Forests

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Section: Rhizosperic Microbes Of C Longamentioning

confidence: 99%

“…These rhizospheric and endophytic microbes (Table 1) play a crucial role in influencing crop productivity by promoting enhanced plant growth, evidenced by increased leaf count, heightened plant height, and other desirable traits (Subrahmanyam et al, 2020). Moreover, they actively contribute to the synthesis of secondary metabolites, equipping the plant with mechanisms to combat both abiotic and biotic stresses (Patel et al, 2020;Chandra et al, 2022). In a similar line of research, Kumar et al isolated a freeliving nitrogen-fixing bacterium, Azobacter chroococcum CL13, from the rhizosphere of C. longa and investigated its impact on plant growth and curcumin content (Kumar et al, 2014).…”

Section: Rhizosperic Microbes Of C Longamentioning

confidence: 99%

“…In addition, the bacteria residing in the rhizosphere zone also play a significant role in the production of secondary metabolites, providing the plant with defense mechanisms against various abiotic and biotic stresses (Patel et al, 2020;Chandra et al, 2022). Similarly, Kumar et al conducted a similar study where they isolated a nitrogen-fixing bacterium, Azobacter chroococcum CL13, from the rhizosphere of C. longa.…”

Section: Rhizosperic Microbes Of C Longamentioning

confidence: 99%

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Rhizobacterial mediated interactions in Curcuma longa for plant growth and enhanced crop productivity: a systematic review

Khan,

Ambika,

Rani

et al. 2023

Front. Plant Sci.

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Turmeric (Curcuma longa L.), a significant commercial crop of the Indian subcontinent is widely used as a condiment, natural dye, and as a cure for different ailments. Various bioactive compounds such as turmerones and curcuminoids have been isolated from C. longa that have shown remarkable medicinal activity against various ailments. However, reduced soil fertility, climatic variations, rapid urbanization, and enhanced food demand, pose a multifaceted challenge to the current agricultural practices of C. longa. Plant growth-promoting microbes play a vital role in plant growth and development by regulating primary and secondary metabolite production. Rhizospheric associations are complex species-specific interconnections of different microbiota with a plant that sustain soil health and promote plant growth through nutrient acquisition, nitrogen fixation, phosphate availability, phytohormone production, and antimicrobial activities. An elaborative study of microbiota associated with the roots of C. longa is essential for rhizospheric engineering as there is a huge potential to develop novel products based on microbial consortium formulations and elicitors to improve plant health, stress tolerance, and the production of secondary metabolites such as curcumin. Primarily, the purpose of this review is to implicate the rhizospheric microbial flora as probiotics influencing overall C. longa health, development, and survival for an increase in biomass, enhanced yield of secondary metabolites, and sustainable crop production.

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“… 19 , 20 Beneficial microbes secrete different secondary metabolites such as one that have biocontrol activities. 21 - 24 Sa. algeriensis NRRL B-24137 (SA) is an aerobic, gram-positive rare actinobacteria that is known to produce numerous bioactive metabolites, belong to pyrrothine like dithiolopyrrolone derivatives.…”

Section: Introductionmentioning

confidence: 99%

Saccharothrix Algeriensis NRRL B-24137 Potentiates Chemical Fungicide Carbendazim in Treating Fusarium Oxysporum f.sp. Vasinfectum-Induced Cotton Wilt Disease

et al. 2020

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Cotton ( Gossypium hirsutum) wilt is one of the destructive disease caused by Fusarium oxysporum f. sp. vasinfectum and lead to 100% yield loss under favorable conditions. This study aims to estimate the potential of biological control agents Saccharothrix algeriensis NRRL B-24137 (SA) and chemical fungicides against cotton wilt pathogen under in-vitro and in-vivo conditions. The in-vitro study revealed that carbendazim showed maximum mycelia growth inhibition with a mean of 91% over control, which was further validated in glasshouse assay. In-vitro dual culture test of biocontrol agents with F. oxysporum determined that SA had a potential to inhibit mycelia growth by 68% compared to control. Further in glasshouse assay, the combination of the SA and carbendazim (10 µg/mL) showed a significant ( p < 0.05) disease control. Moreover, results demonstrated that carbendazim and SA remarkably decreased the disease development up to 83% and subsequently, significant improvement was observed in the plant growth parameters (plant length, root length, and plant weight) compared to untreated plants. Conclusively, exploration and utilization of bioagent for fungal diseases in cotton may provide a better line with maximum efficacy and with lesser adverse effects, which will pave a way toward better consequences in fungal treatments.

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PGPR secondary metabolites: an active syrup for improvement of plant health

Cited by 12 publications

References 86 publications

Plant Growth and Microbiota Structural Effects of Rhizobacteria Inoculation on Mahogany (Swietenia macrophylla King [Meliaceae]) under Nursery Conditions

Plant Growth and Microbiota Structural Effects of Rhizobacteria Inoculation on Mahogany (Swietenia macrophylla King [Meliaceae]) under Nursery Conditions

Rhizobacterial mediated interactions in Curcuma longa for plant growth and enhanced crop productivity: a systematic review

Saccharothrix Algeriensis NRRL B-24137 Potentiates Chemical Fungicide Carbendazim in Treating Fusarium Oxysporum f.sp. Vasinfectum-Induced Cotton Wilt Disease

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