Nitrogen-fixing bacteria of the genusBeijerinckia Derx in the rhizosphere of sugar cane

1961 ◽  
Vol 15 (3) ◽  
pp. 211-216 ◽  
Author(s):  
Johanna Dobereiner
2019 ◽  
Vol 2 (3) ◽  
pp. 53
Author(s):  
Hastari Nastiti

Recycling of organic waste is important because it can reduce environmental problems. Composting is the alternative method for waste recycling, but naturally, the processes always waste a time. EM technology is proven to decrease the composting time. This research conducts the isolation for 3 kinds of indigenous bacteria from compost that used for liquid EM production. The yield of isolation process are 3.6x109 cfu/g phosphate degrading bacteria, 5.6x109 cfu/g cellulose degrading bacteria and       2.7x109 cfu/g nitrogen fixing bacteria. The medium are used for this study to make EM contain of aquadest, 25% sugar cane fresh liquid and 2% Nitrogen-Phosphor-Potassium mixing fertilizer. The final EM product contain of 8.2x108 cfu/g mixing bacteria. The solid starter production with liquid EM addition needs 14 days. The final solid starter has brown color and smell like soil, roughly texture but break up, 7.8 for pH average and 33.8oC for temperature average. In other hand, fresh compost production need 22 days. Further more, in final process, the fresh compost has black-brown color and smell like soil, smoothly texture and crumbs, humidity decreasing, 7.4 for pH average and  44.5oC for temperature average.


2014 ◽  
Vol 71 (3) ◽  
pp. 171-180 ◽  
Author(s):  
Bruno Lima Soares ◽  
Paulo Avelar Ademar Ferreira ◽  
Silvia Maria de Oliveira-Longatti ◽  
Leandro Marciano Marra ◽  
Marcia Rufini ◽  
...  

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.


PLoS ONE ◽  
2014 ◽  
Vol 9 (9) ◽  
pp. e106714 ◽  
Author(s):  
Huhe ◽  
Shinchilelt Borjigin ◽  
Yunxiang Cheng ◽  
Nobukiko Nomura ◽  
Toshiaki Nakajima ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document