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Changes in Reserve Mobilization Caused by Salinity Could Interfere in the Initial Growth of Jatropha curcas

Author

Listed:
  • Emannuella Lira

    (Programa de Pós-Graduação em Ciências Agrárias, Campus I, Universidade Estadual da Paraíba, Campina Grande 58429-500, PR, Brazil)

  • Joilma Souza

    (Laboratório de Tecnologias da Produção Vegetal, Departamento de Agrárias e Exatas, Campus IV, Universidade Estadual da Paraíba, Catolé do Rocha 58880-000, PR, Brazil)

  • Lucas Galdino

    (Laboratório de Tecnologias da Produção Vegetal, Departamento de Agrárias e Exatas, Campus IV, Universidade Estadual da Paraíba, Catolé do Rocha 58880-000, PR, Brazil)

  • Cristiane Macêdo

    (Labotatório de Estudos em Biotecnologia Vegetal, Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, Natal 59078-970, RN, Brazil)

  • Anselmo Silva

    (Programa de Pós-Graduação em Ciências Agrárias, Campus I, Universidade Estadual da Paraíba, Campina Grande 58429-500, PR, Brazil)

  • Yuri Melo

    (Programa de Pós-Graduação em Ciências Agrárias, Campus I, Universidade Estadual da Paraíba, Campina Grande 58429-500, PR, Brazil)

  • Ivanice Santos

    (Programa de Pós-Graduação em Ciências Agrárias, Campus I, Universidade Estadual da Paraíba, Campina Grande 58429-500, PR, Brazil)

  • Nair Arriel

    (Embrapa Algodão, Campina Grande 58428-095, PR, Brazil)

  • Carlos Meneses

    (Programa de Pós-Graduação em Ciências Agrárias, Campus I, Universidade Estadual da Paraíba, Campina Grande 58429-500, PR, Brazil)

  • Josemir Maia

    (Programa de Pós-Graduação em Ciências Agrárias, Campus I, Universidade Estadual da Paraíba, Campina Grande 58429-500, PR, Brazil)

Abstract

Salinity in soil can affect Jatropha seedling metabolism, interfering with plant establishment. In this study, the effect of salinity on the mobilization of reserves during the development of Jatropha seedlings was tested. Two genotypes of Jatropha were used and three concentrations of NaCl were applied between the 4th and 8th days after germination. The effects of salinity on seedling growth, in terms of fresh and dry phytomass, ionic partition, and sugar quantification, starch, proteins, amino acids, and lipids were evaluated in cotyledon leaves, hypocotyls, and roots. There was an increase in the content of all classes of macromolecules analyzed in at least one of the organs. It is hypothesized that the hypocotyls acted as an accumulating organ of Na + . The accumulations of amino acids and protein in roots suggest that metabolic responses occurred in response to the ionic and osmotic effects of NaCl, although this accumulation did not appear to prevent biomass losses in seedlings. Furthermore, the findings of this study demonstrate that salinity inhibits the mobilization of lipids and carbon stocks from cotyledon leaves to the rest of the plant, and together with the synthesis of proteins and amino acids that occurred primarily in roots, contributed to response of these plants to salinity.

Suggested Citation

  • Emannuella Lira & Joilma Souza & Lucas Galdino & Cristiane Macêdo & Anselmo Silva & Yuri Melo & Ivanice Santos & Nair Arriel & Carlos Meneses & Josemir Maia, 2021. "Changes in Reserve Mobilization Caused by Salinity Could Interfere in the Initial Growth of Jatropha curcas," Sustainability, MDPI, vol. 13(13), pages 1-14, July.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:13:p:7446-:d:587770
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    References listed on IDEAS

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    1. Peoples, M.B. & Faizah, A.W. & Rerkasem, Benjavan & Herridge, David F., 1989. "Methods for Evaluating Nitrogen Fixation by Nodulated Legumes in the Field," Monographs, Australian Centre for International Agricultural Research, number 118041.
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