Indole acetic acid and ACC deaminase from endophytic bacteria improves the growth of Solanum lycopersicum

Khan, Abdul Latif; Halo, Boshra A.; Elyassi, Ali; Ali, Sajid; Al-Hosni, Khadija; Hussain, Javid; Al‐Harrasi, Ahmed; Lee, In‐Jung

doi:10.1016/j.ejbt.2016.02.001

Cited by 224 publications

(109 citation statements)

References 24 publications

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“…There is a considerable amount of information on the functional role of microbial communities associated with plants and their internal tissues. Plant-growth promoting rhizobacteria (PGPR) and endophytes stimulate plant growth by producing phytohormones such as auxins [50] gibberellins (GAs) abscisic acid (ABA), and ethylene (ET), or by modulating the plant's endogenous phytohormone levels [59,60]. Under greenhouse conditions, PGPR favoured plant growth and development, as well as plant secondary metabolites accumulation and, consequently, antioxidant capacity.…”

Section: The Functions Of Plant Microbiome Are Essential For the Hostmentioning

confidence: 99%

“…A mixture of four bacterial endophytes significantly improved CBD and THC contents [91]. Endophyte could manipulate that ACC deaminase level, the precursor of THC biosynthesis in the plant [59,67,122]. Despite these advances, the mechanisms underlying the regulation of THC synthesis have not been completely elucidated.…”

Section: Possible Modulation Of Cannabis Secondary Metabolite By Endomentioning

confidence: 99%

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Cannabis Microbiome and the Role of Endophytes in Modulating the Production of Secondary Metabolites: An Overview

Taghinasab

Jabaji

2020

Microorganisms

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Plants, including cannabis (Cannabis sativa subsp. sativa), host distinct beneficial microbial communities on and inside their tissues and organs, including seeds. They contribute to plant growth, facilitating mineral nutrient uptake, inducing defence resistance against pathogens, and modulating the production of plant secondary metabolites. Understanding the microbial partnerships with cannabis has the potential to affect the agricultural practices by improving plant fitness and the yield of cannabinoids. Little is known about this beneficial cannabis-microbe partnership, and the complex relationship between the endogenous microbes associated with various tissues of the plant, and the role that cannabis may play in supporting or enhancing them. This review will consider cannabis microbiota studies and the effects of endophytes on the elicitation of secondary metabolite production in cannabis plants. The review aims to shed light on the importance of the cannabis microbiome and how cannabinoid compound concentrations can be stimulated through symbiotic and/or mutualistic relationships with endophytes.

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Section: The Functions Of Plant Microbiome Are Essential For the Hostmentioning

confidence: 99%

Section: Possible Modulation Of Cannabis Secondary Metabolite By Endomentioning

confidence: 99%

Cannabis Microbiome and the Role of Endophytes in Modulating the Production of Secondary Metabolites: An Overview

Taghinasab

Jabaji

2020

Microorganisms

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“…Root growth stimulation is a well-documented mechanism of plant growth promotion via microbial inoculants. This has been related with the microbial production of hormonal factors with root growth-stimulating properties, such as auxins or certain quorum-sensing molecules [9,28], but also with the ability to produce 1-aminocyclopropane-1-carboxylate (ACC) deaminase, which counteracts excessive stress-induced ethylene accumulation with inhibitory effects on root growth [29,30], as a well-documented response to P deficiency in higher plants [31]. Accordingly, root growth inhibition in response to severe P limitation was recorded also in the present study (Figures 2 and 3), and both, the production of auxin and ACC deaminase have been reported for the Bacillus strain FZB42, which was used as an inoculant [32,33].…”

Section: Alkaline Soilmentioning

confidence: 99%

Soil Type-Dependent Interactions of P-Solubilizing Microorganisms with Organic and Inorganic Fertilizers Mediate Plant Growth Promotion in Tomato

et al. 2018

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The use of plant growth-promoting microorganisms (PGPMs) as bio-effectors (BEs) to improve the nutrient acquisition of crops has a long history. However, limited reproducibility of the expected effects still remains a major challenge for practical applications. Based on the hypothesis that the expression of PGPM effects depends on soil type and the properties of the applied fertilizers, in this study, the performance of selected microbial inoculants was investigated for two contrasting low-fertility soils supplied with different organic and inorganic fertilizers. Greenhouse experiments were conducted with tomato on an alkaline sandy loam of pH 7.8 and an acidic loamy sand of pH 5.6 with limited phosphate (P) availability. Municipal waste compost, with and without poultry manure (PM), rock phosphate (RP), stabilized ammonium, and mineral nitrogen, phosphorus and potassium (NPK) fertilization were tested as fertilizer variants. Selected strains of Bacillus amyloliquefaciens (Priest et al. 1987) Borriss et al. 2011 and Trichoderma harzianum Rifai (OMG16) with proven plant growth-promoting potential were used as inoculants. On both soils, P was identified as a major limiting nutrient. Microbial inoculation selectively increased the P utilization in the PM-compost variants by 116% and 56% on the alkaline and acidic soil, while RP utilization was increased by 24%. This was associated with significantly increased shoot biomass production by 37-42%. Plant growth promotion coincided with a corresponding stimulation of root growth, suggesting improved spatial acquisition of soluble soil P fractions, associated also with improved acquisition of nitrogen (N), potassium (K), magnesium (Mg), and calcium (Ca). There was no indication for mobilization of sparingly soluble Ca phosphates via rhizosphere acidification on the alkaline soil, and only mineral NPK fertilization reached a sufficient P status and maximum biomass production. However, on the moderately acidic soil, FZB42 significantly stimulated plant growth of the variants supplied with Ca-P in the form of RP + stabilized ammonium and PM compost, which was equivalent to NPK fertilization; however, the P nutritional status was sufficient only in the RP and NPK variants. The results suggest that successful application of microbial biofertilizers requires more targeted application strategies, considering the soil properties and compatible fertilizer combinations.

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“…quisition, such as nitrogen and phosphorus uptake through nitrogen fixation (6) and phosphate solubilization (7), respectively, increasing the production of plant growth hormones like auxins, cytokinins, and gibberellins (8) and producing stress tolerance enzymes like 1-aminocyclopropane-1-carboxylate (ACC) deaminase (9). Some other benefits include the breakdown of toxic metals or pollutants and improved iron acquisition and pathogen protection through siderophore production (10).…”

mentioning

confidence: 99%

Plantibacter flavus, Curtobacterium herbarum, Paenibacillus taichungensis, and Rhizobium selenitireducens Endophytes Provide Host-Specific Growth Promotion of Arabidopsis thaliana, Basil, Lettuce, and Bok Choy Plants

Mayer

Quadros

Fulthorpe

2019

Appl Environ Microbiol

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A collection of bacterial endophytes isolated from stem tissues of plants growing in soils highly contaminated with petroleum hydrocarbons were screened for plant growth-promoting capabilities. Twenty-seven endophytic isolates significantly improved the growth of Arabidopsis thaliana plants in comparison to that of uninoculated control plants. The five most beneficial isolates, one strain each of Curtobacterium herbarum, Paenibacillus taichungensis, and Rhizobium selenitireducens and two strains of Plantibacter flavus were further examined for growth promotion in Arabidopsis, lettuce, basil, and bok choy plants. Host-specific plant growth promotion was observed when plants were inoculated with the five bacterial strains. P. flavus strain M251 increased the total biomass and total root length of Arabidopsis plants by 4.7 and 5.8 times, respectively, over that of control plants and improved lettuce and basil root growth, while P. flavus strain M259 promoted Arabidopsis shoot and root growth, lettuce and basil root growth, and bok choy shoot growth. A genome comparison between P. flavus strains M251 and M259 showed that both genomes contain up to 70 actinobacterial putative plant-associated genes and genes involved in known plant-beneficial pathways, such as those for auxin and cytokinin biosynthesis and 1-aminocyclopropane-1-carboxylate deaminase production. This study provides evidence of direct plant growth promotion by Plantibacter flavus. IMPORTANCE The discovery of new plant growth-promoting bacteria is necessary for the continued development of biofertilizers, which are environmentally friendly and cost-efficient alternatives to conventional chemical fertilizers. Biofertilizer effects on plant growth can be inconsistent due to the complexity of plant-microbe interactions, as the same bacteria can be beneficial to the growth of some plant species and neutral or detrimental to others. We examined a set of bacterial endophytes isolated from plants growing in a unique petroleum-contaminated environment to discover plant growth-promoting bacteria. We show that strains of Plantibacter flavus exhibit strain-specific plant growth-promoting effects on four different plant species.

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Indole acetic acid and ACC deaminase from endophytic bacteria improves the growth of Solanum lycopersicum

Cited by 224 publications

References 24 publications

Cannabis Microbiome and the Role of Endophytes in Modulating the Production of Secondary Metabolites: An Overview

Cannabis Microbiome and the Role of Endophytes in Modulating the Production of Secondary Metabolites: An Overview

Soil Type-Dependent Interactions of P-Solubilizing Microorganisms with Organic and Inorganic Fertilizers Mediate Plant Growth Promotion in Tomato

Plantibacter flavus, Curtobacterium herbarum, Paenibacillus taichungensis, and Rhizobium selenitireducens Endophytes Provide Host-Specific Growth Promotion of Arabidopsis thaliana, Basil, Lettuce, and Bok Choy Plants

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