Plant Growth Promoting Bacteria Isolated From a Mexican Natural Ecosystem Induce Water Stress Resistance in Maize and Sorghum Plants

Pérez-Machado, Gisselle; Mull, Juan Gualberto Colli; Chapin, Guillermin Aguero; Riva, G; Samano, Coczy D Vargas

doi:10.4172/1948-5948.1000367

Cited by 4 publications

(2 citation statements)

References 63 publications

(61 reference statements)

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“…Similarly, the individual inoculation of Luteibacter sp. XiU1292, Pseudomonas vranovencis XiU1297 or Acinetobacter iwoffii XiU12138 in sorghum seedlings, improved the growth parameters evaluated 4 weeks after inoculation (Mull et al 2017). Luteibacter sp.…”

Section: Discussionmentioning

confidence: 97%

Plant growth-promoting bacteria belonging to the genera Pseudomonas and Bacillus improve the growth of sorghum seedings in a low-nutrient soil

et al. 2021

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Background: Deficiency in sorghum growth in ecosystems of low-nutrient soils has been scarcely studied. This soil deficiency can be overcome by the addition of plant growth-promoting bacteria which increase sorghum growth. Questions and/or Hypotheses: indole acetic acid (IAA) producing and phosphate solubilizing bacteria can promote sorghum growth under nutritional stress. Studied species: Sorghum bicolor (L.) Moench. Study site and dates: Mexico City, 2018. Methods: Of the twelve bacterial strains utilized, three produce IAA (group BI), two strains produce IAA and siderophores (BIS group), four strains produce IAA and solubilize phosphate (BIP group), and three strains produce IAA, solubilize phosphate, and produce siderophores (BIPS group). Hydroponic bioassays and low-nutrient soil bioassay were used. Results: In hydroponic bioassays, for BI and BIS groups, five strains significantly increased the growth parameters with respect to the control, and for the BIP and BIPS groups, two strains promoted stem development and shoot dry weight. In a low-nutrient soil bioassay, Pseudomonas sp. BI-1 (from BI group) was the one that presented the highest percentages 32, 48, 140 and 79 % in stem diameter, height and dry weight of the shoot and dry weight of the root, respectively, followed by the P. mohnii BIPS-10 strain (from BIPS group) that exhibited similar results. Conclusions: IAA producing Pseudomonas strains improve the sorghum growth in a low-nutrient soil and suggest thatPseudomonas sp. BI-1 and P. mohnii BIPS-10 could be used as potential bioinoculants for sorghum.

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Section: Discussionmentioning

confidence: 97%

Plant growth-promoting bacteria belonging to the genera Pseudomonas and Bacillus improve the growth of sorghum seedings in a low-nutrient soil

et al. 2021

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“…The comprehensive analysis of the soil samples is listed in Supplementary Table 2. A total of 4 sets of soil and root samples were collected from maize plants, immediately stored on ice, transferred to the laboratory, and stored overnight at 4 • C. 200 g of each root sample were washed with 200 mL of sterile, ice-cold 1X phosphate buffer saline (PBS buffer: 8 g/L NaCl, 0.2 g/L KCL, 0.2 g/L KH 2 PO 4 ,1.15 g/L Na 2 HPO 4 , pH 7) for 20 min (Machado and Colli Mull, 2017). The resulting suspensions were filtered using 0.8 µm sterile filters and centrifuged at 4,400 rpm for 20 min to collect pellets composed of bacteria harvested from maize roots.…”

Section: Preparation Of Azosprillium Brasilense Strain Sp -Gfp and Of...mentioning

confidence: 99%

Screening the maize rhizobiome for consortia that improve Azospirillum brasilense root colonization and plant growth outcomes

Barua

Clouse

Diaz

et al. 2023

Front. Sustain. Food Syst.

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Plant growth-promoting bacteria (PGPB) are valuable for supporting sustainable food production and may alleviate the negative impacts of chemical fertilizers on human health and the environment. While single-strain inoculations have proven unreliable due to poor survival and colonization in the rhizosphere, application of PGPB in multispecies consortia has the potential to improve these outcomes. Here, we describe a new approach for screening and identifying bacterial consortia that improve the growth of corn relative to plants inoculated with a single strain. The method uses the microwell recovery array (MRA), a microfabricated high-throughput screening device, to rapidly explore the maize (Zea mays L.) rhizobiome for higher-order combinations of bacteria that promote the growth and colonization of the nitrogen-fixing PGPB, Azospirillum brasilense. The device simultaneously generates thousands of random, unique combinations of bacteria that include A. brasilense and members of the maize rhizobiome, then tracks A. brasilense growth in each combination during co-culture. Bacteria that show the highest levels of A. brasilense growth promotion are then recovered from the device using a patterned light extraction technique and are identified. With this approach, the screen uncovered growth-promoting consortia consisting primarily of bacteria from the Acinetobacter-Enterobacter-Serratia genera, which were then co-inoculated with A. brasilense on axenic maize seedlings that were monitored inside a plant growth chamber. Compared to maize plants inoculated with A. brasilense alone, plants that were co-inoculated with these consortia showed accelerated growth after 15 days. Follow-up root colonization assays revealed that A. brasilense colonized at higher levels on roots from the co-inoculated seedlings. These findings demonstrate a new method for rapid bioprospecting of root and soil communities for complementary PGPB and for developing multispecies consortia with potential use as next-generation biofertilizers.

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Arbuscular mycorrhizal symbiosis: plant growth improvement and induction of resistance under stressful conditions

Mitra

Djebaili

Pellegrini

et al. 2021

Journal of Plant Nutrition

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Plant Growth Promoting Bacteria Isolated From a Mexican Natural Ecosystem Induce Water Stress Resistance in Maize and Sorghum Plants

Cited by 4 publications

References 63 publications

Plant growth-promoting bacteria belonging to the genera <em>Pseudomonas</em> and <em>Bacillus</em> improve the growth of sorghum seedings in a low-nutrient soil

Plant growth-promoting bacteria belonging to the genera <em>Pseudomonas</em> and <em>Bacillus</em> improve the growth of sorghum seedings in a low-nutrient soil

Screening the maize rhizobiome for consortia that improve Azospirillum brasilense root colonization and plant growth outcomes

Arbuscular mycorrhizal symbiosis: plant growth improvement and induction of resistance under stressful conditions

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