The plant growth-promoting effect of the nitrogen-fixing endophyte Pseudomonas stutzeri A15

2017 ◽  
Vol 199 (3) ◽  
pp. 513-517 ◽  
Author(s):  
Van T. K. Pham ◽  
Hans Rediers ◽  
Maarten G. K. Ghequire ◽  
Hiep H. Nguyen ◽  
René De Mot ◽  
...  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Luz K. Medina-Cordoba ◽  
Aroon T. Chande ◽  
Lavanya Rishishwar ◽  
Leonard W. Mayer ◽  
Lina C. Valderrama-Aguirre ◽  
...  

AbstractPrevious studies have shown the sugarcane microbiome harbors diverse plant growth promoting microorganisms, including nitrogen-fixing bacteria (diazotrophs), which can serve as biofertilizers. The genomes of 22 diazotrophs from Colombian sugarcane fields were sequenced to investigate potential biofertilizers. A genome-enabled computational phenotyping approach was developed to prioritize sugarcane associated diazotrophs according to their potential as biofertilizers. This method selects isolates that have potential for nitrogen fixation and other plant growth promoting (PGP) phenotypes while showing low risk for virulence and antibiotic resistance. Intact nitrogenase (nif) genes and operons were found in 18 of the isolates. Isolates also encode phosphate solubilization and siderophore production operons, and other PGP genes. The majority of sugarcane isolates showed uniformly low predicted virulence and antibiotic resistance compared to clinical isolates. Six strains with the highest overall genotype scores were experimentally evaluated for nitrogen fixation, phosphate solubilization, and the production of siderophores, gibberellic acid, and indole acetic acid. Results from the biochemical assays were consistent and validated computational phenotype predictions. A genotypic and phenotypic threshold was observed that separated strains by their potential for PGP versus predicted pathogenicity. Our results indicate that computational phenotyping is a promising tool for the assessment of bacteria detected in agricultural ecosystems.


2017 ◽  
Vol 416 (1-2) ◽  
pp. 117-132 ◽  
Author(s):  
Sheng Qin ◽  
Wei-Wei Feng ◽  
Tian-Tian Wang ◽  
Peng Ding ◽  
Ke Xing ◽  
...  

2019 ◽  
Vol 24 (1) ◽  
pp. 119-125 ◽  
Author(s):  
Yeon-Ju Kim ◽  
Jaewon Lim ◽  
Johan Sukweenadhi ◽  
Ji Woong Seok ◽  
Sang-Won Lee ◽  
...  

2009 ◽  
Vol 28 (8) ◽  
pp. 634-639 ◽  
Author(s):  
Huili Wang ◽  
Kai Wen ◽  
Xiuyun Zhao ◽  
Xuedong Wang ◽  
Aiying Li ◽  
...  

2013 ◽  
Vol 53 (12) ◽  
pp. 1004-1015 ◽  
Author(s):  
Md. Rashedul Islam ◽  
Tahera Sultana ◽  
M. Melvin Joe ◽  
Woojong Yim ◽  
Jang-Cheon Cho ◽  
...  

2021 ◽  
Vol 8 (4) ◽  
pp. 104-110
Author(s):  
Di Barbaro Gabriela ◽  
Andrada Horacio ◽  
Batallan Morales Silvana ◽  
Espeche Acosta Eliana ◽  
Rizo Melisa ◽  
...  

To determine the effect of Azospirillum brasilense and soil mycorrhizal fungi on the nutrition of the Jerusalem artichoke crop (Helianthus tuberosus L.), evaluations of agronomic parameters and the health status of the plants were carried out, under greenhouse conditions. The tests were carried out, at the moment of the implantation of the culture: the tubers were inoculated with A. brasilense and with native mycorrhizal fungi, generating four treatments including the control and the co-inoculation of the consortium of the microorganisms under study (T0: control or control without inoculation; T1: inoculation with native A. brasilense; T2: inoculation with native mycorrhizal fungi and T3: joint inoculation with A. brasilense and native mycorrhizal fungi. The results indicate that co-inoculation with A. brasilense and with native mycorrhizal fungi increased plant growth in height, leaf area, biomass, dry matter, and yields significantly in greenhouse production. It was determined that the application of the selected microorganisms has a plant growth-promoting effect, increasing the productivity of cultivated topinambur in the greenhouse


Foods ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 189
Author(s):  
Claudio Cacace ◽  
Carlo Giuseppe Rizzello ◽  
Gennaro Brunetti ◽  
Michela Verni ◽  
Claudio Cocozza

: In an era characterized by land degradation, climate change, and a growing population, ensuring high-yield productions with limited resources is of utmost importance. In this context, the use of novel soil amendments and the exploitation of plant growth-promoting microorganisms potential are considered promising tools for developing a more sustainable primary production. This study aimed at investigating the potential of bread, which represents a large portion of the global food waste, to be used as an organic soil amendment. A bioprocessed wasted bread, obtained by an enzymatic treatment coupled with fermentation, together with unprocessed wasted bread were used as amendments in a pot trial. An integrated analytical plan aimed at assessing i) the modification of the physicochemical properties of a typical Mediterranean alkaline agricultural soil, and ii) the plant growth-promoting effect on escarole (Cichorium endivia var. Cuartana), used as indicator crop, was carried out. Compared to the unamended soils, the use of biomasses raised the soil organic content (up to 37%) and total nitrogen content (up to 40%). Moreover, the lower pH and the higher organic acid content, especially in bioprocessed wasted bread, determined a major availability of Mn, Fe, and Cu in amended soils. The escaroles from pots amended with raw and bioprocessed bread had a number of leaves, 1.7- and 1.4-fold higher than plants cultivated on unamended pots, respectively, showing no apparent phytotoxicity and thus confirming the possible re-utilization of such residual biomasses as agriculture amendments.


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