Attenuation of salt stress on the physiology and production of bell peppers by treatment with salicylic acid

Luana Lucas de Sá Almeida Veloso, Geovani Soares de Lima, André Alisson Rodrigues da Silva, Leandro de Pádua Souza, Cassiano Nogueira de Lacerda, Idelvan José da Silva, Lúcia Helena Garofalo Chaves, Pedro Dantas Fernandes


The use of saline water for irrigation in semi-arid regions has become a reality due to the water scarcity that occurs in most of the year. In this scenario, exogenous application of salicylic acid may be a strategy to mitigate the deleterious effects of salt stress on plants and ensure the production of socioeconomically important crops in the semiarid region of Northeast Brazil, such as bell pepper. Thus, this study examines the osmoprotective effect of salicylic acid on gas exchanges, chloroplast pigments and production components of 'All Big' bell pepper plants irrigated with water with different saline levels. The experiment was carried out in greenhouse conditions in Campina Grande - PB, Brazil. Treatments consisted of four levels of electrical conductivity on the irrigation water (0.8, 1.6, 2.4 and 3.2 dS m-1) and four concentrations of salicylic acid (0, 1.2, 2.4 and 3.6 mM), which were distributed in a 4 × 4 factorial arrangement in a randomized block design with three replicates. Increases in irrigation water salinity from 0.8 dS m-1 resulted in changes in gas exchange and total chlorophyll levels of 'All Big' bell pepper plants. The estimated salicylic acid concentration of 1.7 mM reduced the effects of salinity on stomatal conductance, transpiration, CO2 assimilation rate, instantaneous carboxylation efficiency, total chlorophyll and fruit diameters. Irrigation with water of 1.8, 0.8 and 1.6 dS m-1 salinity associated with the estimated salicylic acid concentration of 1.6 mM increased the biosynthesis of chlorophylls a and b and the number of fruits, respectively, in bell pepper plants.


Capsicum annuum L.; Salt stress; Attenuation.

Full Text:



Abdelaal, K. A., EL-Maghraby, L. M., Elansary, H., Hafez, Y. M., Ibrahim, E. I., El-Banna, M, Elkelish, A. (2020). Treatment of sweet pepper with stress tolerance-inducing compounds alleviates salinity stress oxidative damage by mediating the physio-biochemical activities and antioxidant systems. Agronomy, 10(1), 26. doi: 10.3390/agronomy10010026

Amirinejad, A. A., Sayyari, M., Ghanbari, F., & Kordi, S. (2017). Salicylic acid improves salinity-alkalinity tolerance in pepper (Capsicum annuum L.). Advances in Horticultural Science, 31(3), 157-163. doi: Recovered from

Arnon, D. I. (1949). Copper enzymes in isolated chloroplasts: Polyphenoloxidase in Beta vulgaris. Plant Physiology, 24(1), 1-15. doi: 10.1104/pp.24.1.1

Branco, L. M. C., Lacerda, C. F. de, Marinho, A. B., Sousa, C. H. C. de, Calvet, A. S. F., & Oliveira, E. G. de. (2020). Production of Bambusa vulgaris seedlings from rhizomes under brackish water irrigation. Revista Brasileira de Engenharia Agrícola e Ambiental, 24(5), 337-342. doi: 10.1590/1807-1929/ agriambi.v24n5p337-342

Abbaszadeh, B., Layeghhaghighi, M., Azimi, R., & Hadi, N. (2020). Improving water use efficiency through drought stress and using salicylic acid for proper production of Rosmarinus officinalis L. Industrial Crops and Products, 144(1), e111893. doi: 10.1016/j.indcrop.2019.111893

Braz, R. S., Lacerda, C. F. de, Assis, R. N. de, Jr., Ferreira, J. F. S., Oliveira, A. C., & Ribeiro, A. de A. (2019). Growth and physiology of maize under water salinity and nitrogen fertilization in two soils. Revista Brasileira de Engenharia Agrícola e Ambiental, 23(12), 907-913. doi: 10.1590/1807-1929/ agriambi.v23n12p907-913

Cavalcante, A. R., Santos, J. A., Jr., Furtado, G. D. F., & Chaves, L. H. (2019). Trocas gasosas e eficiência fotoquímica do pimentão hidropônico sob salinidade e densidades de plantio. Revista Brasileira de Engenharia Agrícola e Ambiental, 23(1), 3-8. doi: 10.1590/1807-1929/agriambi.v23n1p3-8

Cirilo, J. A., Montenegro, S. M. G. L., & Campos, J. N. B. (2010). A questão da água no semiárido brasileiro. In C. E. M. Bicudo, J. G. Tundisi, & M. C. B. Scheuenstuhl (Orgs.), Águas do Brasil análises estratégicas (pp. 81-91). São Paulo, SP: Instituto de Botânica.

Dias, A. S., Lima, G. S. de, Gheyi, H. R., Nobre, R. G., Fernandes, P. D., & Silva, F. A. (2018b). Trocas gasosas e eficiência fotoquímica do gergelim sob estresse salino e adubação com nitrato-amônio. Irriga, 23(2), 220-234. doi: 10.15809/irriga.2018v23n2p220-234

Dias, A. S., Lima, G. S. de, Sá, F. V. da S., Gheyi, H. R., Soares, L. A. dos A., & Fernandes, P. D. (2018a). Gas exchanges and photochemical efficiency of West Indian cherry cultivated with saline water and potassium fertilization. Revista Brasileira de Engenharia Agrícola e Ambiental, 22(9), 628-633. doi: 10. 1590/1807-1929/agriambi.v22n9p628-633

Diaz, D. A. V., Pérez, L. S., Rangel, P. P., Castruita, M. A. S., Fuentes, J. A. G., & Valenzuela-García, J. R. (2016). Efecto del ácido salicílico en la producción y calidad nutracéutica de frutos de tomate. Revista Mexicana de Ciências Agrícolas, 17(1), 3405-3414

Díaz, D. A. V., Salas-Pérez, L., Fuentes, J. A. G., Lázaro, E. C., Chávez, E. S., & Rangel, P. P. (2020). Calidad comercial y nutracéutica del Chile jalapeño afectada por niveles de ácido salicílico. Interciencia: Revista de Ciencia y Tecnología de América, 45(9), 423-427.

Evelin, H., Devi, T. S., Gupta, S., & Kapoor, R. (2019). Mitigation of salinity stress in plants by arbuscular mycorrhizal symbiosis: current understanding and new challenges. Frontiers in Plant Science, 10(1), 470. doi: 10.3389/fpls.2019.00470

Food and Agriculture Organization of the United Nations (2020). Recovered from faostat

Farhadi, N., & Ghassemi-Golezani, K. (2020). Physiological changes of Mentha pulegium in response to exogenous salicylic acid under salinity. Scientia Horticulturae, 267(1), 109325. doi: 10.1016/j.scienta. 2020.109325

Ferreira, D. F. (2019). SISVAR: A computer analysis system to fixed effects split plot type designs. Revista Brasileira de Biometria, 37(1), 529-535. doi: 10.28951/rbb.v37i4.450


Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433 / 1679-0359
Este obra está licenciado com uma Licença  Creative Commons Atribuição-NãoComercial 4.0 Internacional