Plant growth-promoting bacteria effect in withstanding drought in wheat cultivars

Autores

  • Fernando Furlan Universidade Federal do Rio Grande do Sul
  • Kléber Saatkamp Department of Bioscience, Federal University of Paraná – UFPR. 2153, Pioneiro St., Jardim Dallas, 85950-000. Palotina, Paraná – Brazil.
  • Camila Gazolla Volpiano Department of Bioscience, Federal University of Paraná – UFPR. 2153, Pioneiro St., Jardim Dallas, 85950-000. Palotina, Paraná – Brazil.
  • Francisco de Assis Franco Agricultural Research Central Cooperative – COODETEC. BR 467 rd, km 98, Postal Box 301, 85813-450. Cascavel, Paraná – Brazil.
  • Marise Fonseca dos Santos Department of Bioscience, Federal University of Paraná – UFPR. 2153, Pioneiro St., Jardim Dallas, 85950-000. Palotina, Paraná – Brazil.
  • Eliane Cristina Gruszka Vendruscolo Department of Bioscience, Federal University of Paraná – UFPR. 2153, Pioneiro St., Jardim Dallas, 85950-000. Palotina, Paraná – Brazil.
  • Vandeir Francisco Guimarães Department of Agronomy, State University of West Paraná – UNIOESTE. 1777, Pernambuco St., Downtown, 85960-000. Marechal Cândido Rondon, Paraná – Brazil.
  • Antonio Carlos Torres da Costa Department of Agronomy, State University of West Paraná – UNIOESTE. 1777, Pernambuco St., Downtown, 85960-000. Marechal Cândido Rondon, Paraná – Brazil.

DOI:

https://doi.org/10.5380/rsa.v18i2.51385

Resumo

Plant growth-promoting bacteria (PGPB) have been used as biofertilizer. However, considering the specificity of the plant-bacteria interaction, the effect of PGPB inoculation in wheat under water stress is still poorly understood. The aim of this work was to evaluate wheat genotypes under water shortage inoculated with Azospirillum brasilense and Herbaspirillum seropedicae, with and without nitrogen fertilization. Therefore, samples for relative water content (RWC) and membrane stability index (MSI) evaluations were collected at the 1st and 8th days of a total water restriction at booting stage. In addition, biomass, total nitrogen (TN) and yield parameters were determined at the harvesting. As results, genotypes showed a distinct performance. RWC and MSI data revealed that A. brasilense and H. seropedicae inoculation are able to lead CD 120 to drought tolerance. In addition, grain index was improved in all conditions where H. seropedicae was present under both different water regimes. H. seropedicae with nitrogen fertilizer also increased grain yield under water shortage regime. Furthermore, A. brasilense with nitrogen fertilizer was also able to improve 1000-grain mass of plants under water shortage. Frontana exhibited the maintenance of cellular integrity and RWC only when H. seropedicae and with both bacteria plus nitrogen were applied, however this cultivar did not present differences in terms of biomass, TN or productivity. These results pointed out H. seropedicae as promising to inoculation in cereals and CD120 as a good plant model to study plant-bacteria interaction.

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Publicado

2017-07-07

Como Citar

Furlan, F., Saatkamp, K., Gazolla Volpiano, C., de Assis Franco, F., Fonseca dos Santos, M., Gruszka Vendruscolo, E. C., … Torres da Costa, A. C. (2017). Plant growth-promoting bacteria effect in withstanding drought in wheat cultivars. Scientia Agraria, 18(2), 104–113. https://doi.org/10.5380/rsa.v18i2.51385

Edição

v. 18 n. 2 (2017)

Seção

Ciências do Solo

Licença

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