The rhizosphere bacterium<i>Variovorax paradoxus</i>5C-2 containing ACC deaminase does not increase systemic ABA signaling in maize (<i>Zea mays</i>L.)

Dodd, Ian C.; Jiang, Fan; Teijeiro, Rosalia Garcia; Belimov, Andrey A.; Hartung, Wolfram

doi:10.4161/psb.4.6.8574

Cited by 16 publications

(6 citation statements)

References 17 publications

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“…Specifically, microorganisms secreting the enzyme 1aminocyclopropane-1-carboxylate deaminase convert ACC to ammonia and α-ketobutyrate, thus lowering ethylene levels and promoting growth in stressed plants (Glick et al, 2007). The beneficial effect of ACC-deaminase producers on drought-stressed plants has been documented in multiple crops treated by such diverse rhizobacteria as Bacillus (Lim & Kim, 2013), Variovorax (Dodd, Jiang, Teijeiro, Belimov, & Hartung, 2009), Burkholderia (Naveed et al, 2014), Achromobacter (Mayak et al, 2004), and different species of Pseudomonas (Carlson et al, 2020;Cheng, Park, & Glick, 2007;Niu, Song, Xiao, & Ge, 2018;Zahir, Ghani, Naveed, Nadeem, & Asghar, 2009). This list is by no means exhaustive because studies of this type are numerous and ACC-deaminase is highly prevalent among divergent Proteobacteria, Firmicutes, and Actinobacteria (Nascimento, Rossi, Soares, McConkey, & Glick, 2014).…”

Section: How Rhizobacteria Protect Plants From Drought Stressmentioning

confidence: 99%

Rhizosphere plant-microbe interactions under water stress

Bhattacharyya

Pablo

Mavrodi

et al. 2021

Advances in Applied Microbiology

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Section: How Rhizobacteria Protect Plants From Drought Stressmentioning

confidence: 99%

Rhizosphere plant-microbe interactions under water stress

Bhattacharyya

Pablo

Mavrodi

et al. 2021

Advances in Applied Microbiology

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“…After translation into AsfA protein sequences, nine of the 12 dominating OTUs were associated with a clade bordering with clades of Variovorax , Polaromonas 1, and Hydrogenophaga . These genera have been previously identified as desulfonating bacteria in crop and grassland soil and rhizosphere (Schmalenberger & Kertesz, ; Schmalenberger et al ., , ; Dodd et al ., ; Peralta et al ., ; Schmalenberger & Noll, ). Interestingly, Variovorax was not isolated through cultivation in this study (Table ).…”

Section: Discussionmentioning

confidence: 98%

The role of sulfur- and phosphorus-mobilizing bacteria in biochar-induced growth promotion ofLolium perenne

Fox

Kwapiński

Griffiths

et al. 2014

FEMS Microbiol Ecol

115

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Plants rely on microorganisms to mobilize organically and inorganically bound sulfur (S) and phosphorus (P) in which the plant can then readily utilize. The aim of this study was to investigate the role of S- and P-mobilizing bacteria in plant growth promotion in biochar-amended soil, which has been rarely investigated so far. Pot experiments of Lolium perenne were established on S and P limited soil with 1% or 2% biochar (Miscanthus × giganteus) or without biochar (control) for a period of 126 days. Both biochar amendments resulted in significant plant growth promotion. Rhizobacteria capable of growing with (1) S from aromatic sulfonates, (2) P from phosphate esters, (3) P from phosphonates, and (4) P from tri-calcium phosphates as sole source of S or P, respectively, were significantly more abundant in the biochar treatments. 16S rRNA gene-based rhizobacteria community analysis revealed a significant biochar treatment effect. Abundance of nematodes feeding on bacteria was also significantly increased in the biochar treatments. Diversity analysis of rhizospheric asfA and phnJ genes revealed broad sequence diversities in bacterial sulfonate and phosphonate-mineralizing capabilities. These findings suggest that biochar amendment enhances microbially mediated nutrient mobilization of S and P resulting in improved plant growth.

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“…On the other hand, some PGPR strains can break down ABA, such as Rhodococcus sp. P1Y, which decreased the amount of internal ABA in shoot plants [ 73 , 74 ]. In our study, the reduction in leaf ABA levels of cucumbers inoculated with the SS14 and IC6 strains was due to a decrease in NCED gene expression, while IAA production increased root and shoot growth relative to the control.…”

Section: Discussionmentioning

confidence: 99%

Specific Streptomyces strain enhances the growth, defensive mechanism, and fruit quality of cucumber by minimizing its fertilizer consumption

Orouji,

Fathi Ghare baba,

Sadeghi

et al. 2023

BMC Plant Biol

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Background The required amounts of chemical fertilizers (NPK) are determined by plant yield, and product quality is given less consideration. The use of PGPRs is an environmentally friendly approach that, in addition to increasing yield, also improves fruit quality. This study examined the role of specific Streptomyces strains in aiding cucumber plants to 1) use fewer NPK fertilizers in the same quantity 2) improve the quality of cucumber fruit, and 3) promote growth and defense system. Results In this study, the effect of 17 Streptomyces strains on the vegetative traits of cucumber seedlings of the Sultan cultivar was evaluated as the first test. Four strains of Streptomyces with the highest root and shoot dry weight were selected from the strains. This experiment was performed to determine the interaction effect of selected strains and different amounts of NPK on cucumber yield, quality, physiological and biochemical responses of plants. The first experiment’s results revealed that strains IC6, Y7, SS12, and SS14 increased significantly in all traits compared to the control, while the other strains dramatically improved several characteristics. Analysis of variance (ANOVA) revealed significant differences between the effect of strains, NPK concentrations, and their interactions on plant traits. The treatments containing 75% NPK + SS12, yielded the most fruit (40% more than the inoculated control). Antioxidant enzymes assay showed that SS12 substantially increased the activity of POX, PPO, and the expression of the genes related to these two enzymes. Hormone assay utilizing HPLC analysis revealed that various strains employ a specific mechanism to improve the immune system of plants. Conclusions Treatment with strain SS12 led to the production of cucumbers with the highest quality by reducing the amount of nitrate, and soluble sugars and increasing the amount of antioxidants and firmness compared to other treatments. A specific Streptomyces strain could reduce 25% of NPK fertilizer during the vegetative and reproductive growth period. Moreover, this strain protected plants against possible pathogens and adverse environmental factors through the ISR and SAR systems.

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The rhizosphere bacteriumVariovorax paradoxus5C-2 containing ACC deaminase does not increase systemic ABA signaling in maize (Zea maysL.)

Abstract: Rhizosphere bacteria containing ACC deaminase increase yield of plants grown in drying soil via both local and systemic hormone signalling.

Cited by 16 publications

References 17 publications

Rhizosphere plant-microbe interactions under water stress

Rhizosphere plant-microbe interactions under water stress

The role of sulfur- and phosphorus-mobilizing bacteria in biochar-induced growth promotion ofLolium perenne

Specific Streptomyces strain enhances the growth, defensive mechanism, and fruit quality of cucumber by minimizing its fertilizer consumption

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