Germination test for the evaluation of plant-growth promoting microorganisms

Calvillo-Aguilar, Francisco F.; Cruz-Cárdenas, Carlos I.; Chávez-Díaz, Ismael Fernando; Sandoval-Cancino, Gabriela; Ruiz-Ramírez, Santiago; Bautista-Ramírez, Edgardo; Ramos-Garza, Juan; Hernández‐Rodríguez, César; Zelaya-Molina, Lily X.

doi:10.1016/j.mimet.2023.106708

Cited by 3 publications

(1 citation statement)

References 20 publications

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“…A previous study on the germination and development of maize seeds after priming with the IAA-producing rhizospheric yeast Clavispora lusitaniae Y35 and the diazotrophic bacterial strain Serratia liquefaciens 385 was examined by using the paper method. The results revealed that plumule growth and the radical system architecture of the seedlings were improved [49]. Our findings, on the other hand, showed that seed priming with C. tropicalis KPS2219 had no effect after germination in sterilized peat moss for 14 days, suggesting that the environment or germination testing method may have an impact on yeast survival or activity.…”

Section: Effects Of Growth-promoting Yeasts On the Growth Of Chili Se...mentioning

confidence: 60%

Indole-3-Acetic Acid Producing Yeasts in the Phyllosphere of Legumes: Benefits for Chili Growth

Soponputtaporn,

Srithaworn,

Promnuan

et al. 2024

Trends Sci

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Plant growth-promoting yeast (PGPY), which is associated with plants, has demonstrated the ability to enhance plant growth and crop yield and provide an effective alternative strategy for reducing the extensive use of chemical fertilizers. However, plant development and yield effects of the phyllosphere yeast have received comparatively little research. Therefore, 95 phylloplane yeast were isolated from the leaves of plants in Leguminosae, and their capability to produce indole-3-acetic acid (IAA) in yeast extract peptone dextrose (YPD) broth supplemented with L-tryptophan was evaluated in this research. Forty-two isolates were selected, due to their ability to produce IAA. Among these isolates, 7 showed high IAA production of more than 40 mg/g DW in YPD with tryptophan as the precursor. These strains were identified as Candida tropicalis, Pichia kudriavzevii and Tortispora caseinolytica based on morphological and D1/D2 domain of LSU rDNA sequence analysis. Other plant growth promotion traits, including the solubilization of phosphate, production of ammonia and siderophores and ACC deaminase activity, were also investigated. The results revealed that Candida tropicalis KPS2219 exhibited maximum IAA production of 54.10 mg/g DW, high ammonia production at 1.16 mg/mL and siderophore production. In a greenhouse experiment, the ability of C. tropicalis KPS2219 to enhance the growth of chili seedlings was investigated. The results revealed that seed priming followed by foliar spraying with C. tropicalis KPS2219 significantly increased the root length, shoot length, root dry weight and stem dry weight of the seedlings by 17.72, 29.15, 60 and 46.15 %, respectively, in comparison to those of the uninoculated control. These findings indicate the possibility of C. tropicalis KPS2219 as a bioinoculant to promote plant development and the effectiveness of foliar application. The efficacy of employing yeast consortiums to enhance growth will be investigated for further study. HIGHLIGHTS Phylloplane yeasts with remarkably high IAA production and multiple traits that promote the growth of plants were isolated from the new habitat, legumes. Spraying the yeast cells on the leaves of chili plants accelerated the growth of the plant. GRAPHICAL ABSTRACT

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Section: Effects Of Growth-promoting Yeasts On the Growth Of Chili Se...mentioning

confidence: 60%

Indole-3-Acetic Acid Producing Yeasts in the Phyllosphere of Legumes: Benefits for Chili Growth

Soponputtaporn,

Srithaworn,

Promnuan

et al. 2024

Trends Sci

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Bacillus strains from a fire affected oyamel-fir forest soil as biocontrol and plant-growth-promoting bacteria

Chávez-Díaz,

Ruiz-Ramírez,

Bautista-Ramírez

et al. 2024

Journal of Agriculture and Food Research

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Plant Growth-Promoting and Tequila Vinasse-Resistant Bacterial Strains

Valencia-Botín,

Chávez-Díaz,

Zurita-Martínez

et al. 2024

Microbiology Research

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Tequila vinasse, a byproduct of the tequila industry, is frequently discharged into water bodies or agricultural fields, posing significant ecological and human health risks. Bacterial communities that inhabit these agricultural fields have developed mechanisms to utilize tequila vinasse as a potential nutrient source and to promote plant growth. In this study, strains from the phyla Actinomycetota and Pseudomonadota were isolated from agricultural fields irrigated with tequila vinasse for 2, 10, and 14 years in Jalisco, Mexico. The results showed that strains of Terrabacter, Azotobacter, Agromyces, Prescottella, and Leifsonia tolerate high concentrations of tequila vinasse and promote maize seedling growth in the presence of tequila vinasse. Additionally, some of the strains solubilize potassium and produce siderophores, cellulase, protease, lipase, and esterase. The strains Terrabacter sp. WCNS1C, Azotobacter sp. WCNS1D, and Azotobacter sp. WCNS2A have potential applications in the bioremediation of tequila vinasse in agricultural fields discharged with tequila vinasse.

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Germination test for the evaluation of plant-growth promoting microorganisms

Cited by 3 publications

References 20 publications

Indole-3-Acetic Acid Producing Yeasts in the Phyllosphere of Legumes: Benefits for Chili Growth

Indole-3-Acetic Acid Producing Yeasts in the Phyllosphere of Legumes: Benefits for Chili Growth

Bacillus strains from a fire affected oyamel-fir forest soil as biocontrol and plant-growth-promoting bacteria

Plant Growth-Promoting and Tequila Vinasse-Resistant Bacterial Strains

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