Selection of metal resistant plant growth promoting rhizobacteria for the growth and metal accumulation of energy maize in a mine soil — Effect of the inoculum size

Geoderma ◽  
2016 ◽  
Vol 278 ◽  
pp. 1-11 ◽  
Author(s):  
Helena Moreira ◽  
Sofia I.A. Pereira ◽  
Ana P.G.C. Marques ◽  
António O.S.S. Rangel ◽  
Paula M.L. Castro
Keyword(s):  
Plant Growth ◽  
Metal Accumulation ◽  
Plant Growth Promoting Rhizobacteria ◽  
Inoculum Size ◽  
Mine Soil ◽  
Resistant Plant ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Selection Of

The Selection of Sugarcane Families That Display Better Associations with Plant Growth Promoting Rhizobacteria

2012 ◽  
Vol 11 (2) ◽  
pp. 43-52 ◽  
Author(s):  
Valeria Rosa Lopes ◽  
Joao C. Bespalh ◽  
Luiza Maria de A ◽  
Fabio Vieira Rod ◽  
Edelclaiton Daros ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Selection Of

scholarly journals Selection of Saccharum spp. rhizobacteria with growth-promoting properties using PCA analysis

2020 ◽  
pp. 1186-1194
Author(s):  
Roberta Mendes dos Santos ◽  
Everlon Cid Rigobelo
Keyword(s):  
Plant Growth ◽  
Principal Component ◽  
Plant Growth Promoting Rhizobacteria ◽  
Cellulolytic Activity ◽  
Bacterial Strains ◽  
Saccharum Spp ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Enterobacter Asburiae ◽  
Selection Of

The search for plant growth-promoting rhizobacteria is an ongoing need for the development of new bioinoculants for use in various crops, including sugarcane. Bacterial strains with various plant growth-promoting properties can contribute to sustainable agricultural production. The present study aimed to isolate, characterize and select sugarcane rhizobacteria from six different varieties through principal components analysis. This study selected 167 bacterial strains with the ability to fix nitrogen, produce indolacetic acid, exhibit cellulolytic activity, and solubilize phosphate and potassium were isolated. Of these 167 bacterial strains, seven were selected by principal component analysis and identified as belonging to the genera Staphylococcus, Enterobacter, Bacillus and Achromobacter. Bacillus thuringiensis IP21 presented higher potential for nitrogen fixation and CaPO4 and AlPO4 solubilization and a lower potential for K solubilization in sugarcane. Enterobacter asburiae IP24 was efficient in indolacetic acid production and CaPO4 and FePO4 solubilization and inefficient for Araxá apatite solubilization.

scholarly journals A Framework for the Selection of Plant Growth-Promoting Rhizobacteria Based on Bacterial Competence Mechanisms

2020 ◽  
Vol 86 (14) ◽  
Author(s):  
Carol V. Amaya-Gómez ◽  
Mario Porcel ◽  
Leyanis Mesa-Garriga ◽  
Martha I. Gómez-Álvarez
Keyword(s):  
Hydrogen Peroxide ◽  
Plant Growth ◽  
Decision Analysis ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Plant Growth Promoting Rhizobacteria ◽  
Screening Strategy ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Selection Of

ABSTRACT The use of plant growth-promoting rhizobacteria (PGPR) is increasingly meaningful for the development of more environmentally friendly agricultural practices. However, often the PGPR strains selected in the laboratory fail to confer the expected beneficial effects when evaluated in plant experiments. Insufficient rhizosphere colonization is pointed out as one of the causes. With the aim of minimizing this inconsistency, we propose that besides studying plant growth promotion traits (PGP), the screening strategy should include evaluation of the microbial phenotypes required for colonization and persistence. As a model, we carried out this strategy in three Rhizobium sp. strains that showed phosphorus solubilization ability and production of siderophores. All strains displayed colonization phenotypes like surface spreading, resistance to hydrogen peroxide, and formed biofilms. Regarding their ability to persist, biofilm formation was observed to be influenced by pH and the phosphorus nutrient provided in the growth media. Differences in the competence of the strains to use several carbon substrates were also detected. As part of our framework, we compared the phenotypic characteristics of the strains in a quantitative manner. The data analysis was integrated using a multicriteria decision analysis (MCDA). All our results were scored, weighted, and grouped as relevant for PGP, colonization, or persistence. MCDA demonstrated that, when the phenotypes related to PGP and colonization are weighted over those for persistence, strain B02 performs better than the other two Rhizobium sp. strains. The use of our framework could assist the selection of more competent strains to be tested in greenhouse and field trials. IMPORTANCE Numerous plant growth-promoting rhizobacteria (PGPR) have been inoculated into the soil with the aim of improving the supply of nutrients to crop plants and decreasing the requirement of chemical fertilizers. However, sometimes these microbes fail to competitively colonize the plant roots and rhizosphere. Hence, the plant growth promotion effect is not observed. Here, we describe a new screening strategy aiming at the selection of more competent PGPR. We evaluated bacterial phenotypes related to plant growth promotion, colonization, and persistence. Our results demonstrated that despite the fact that our Rhizobium sp. strains successfully solubilized phosphorus and produced siderophores, their abilities to spread over surfaces, resist hydrogen peroxide, and form biofilms varied. Additionally, a multicriteria decision analysis was used to analyze the data that originated from bacterial physiological characterizations. This analysis allowed us to innovatively evaluate each strain as a whole and compare the performances of the strains under hypothetical scenarios of bacterial-trait requirements.

scholarly journals Selection of plant growth promoting rhizobacteria sharing suitable features to be commercially developed as biostimulant products

2021 ◽  
Vol 245 ◽  
pp. 126672
Author(s):  
Maria Vasseur-Coronado ◽  
Hervé Dupré du Boulois ◽  
Ilaria Pertot ◽  
Gerardo Puopolo
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Selection Of

scholarly journals Sodium-resistant plant growth-promoting rhizobacteria isolated from a halophyte, Salsola grandis, in saline-alkaline soils of Turkey

2017 ◽  
Vol 6 (3) ◽  
pp. 216-216 ◽  
Author(s):  
Ryota Kataoka ◽  
Esra Güneri ◽  
Oguz Can Turgay ◽  
Ahmet Emre Yaprak ◽  
Bahar Sevilir ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Alkaline Soils ◽  
Resistant Plant ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Saline Alkaline Soils
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