MERCURY AFFECTS AQUAPORINS ACTIVITY AND GERMINATION OF THE EMBRYONIC AXIS OF Schizolobium parahyba (VELL.) BLAKE (FABACEAE)

Authors

  • Paulo Roberto Magistrali Universidade Federal de Viçosa, Doutorado em Ciência Florestal, Viçosa, MG - Brasil
  • Eduardo Euclydes de Lima e Borges Universidade Federal de Viçosa, Doutorado em Ciência Florestal, Viçosa, MG - Brasil
  • Juraci Alves de Oliveira Universidade Federal de Viçosa, Departamento de Engenharia Florestal, Viçosa, MG - Brasil
  • José Marcio Rocha Faria Universidade Federal de Lavras, Departamento de Ciências Florestais, Lavras, MG - Brasil
  • Glauciana da Mata Ataide Universidade Federal de São João Del-Rei, Departamento Engenharia Florestal, Sete Lagoas, MG - Brasil
  • Janice Ferreira do Nascimento Instituto Federal de Educação Ciência e Tecnologia de Rondônia, Ji-Paraná, RO - Brasil

Keywords:

Aquaporins, Heavy metal, Forest seed

Abstract

Germination is a physiological process that begins with hydration. Specific channels known as aquaporins are responsible for water uptake through biological cell membranes. The mercuric chloride (HgCl2) reversibly inhibits water transport during germination through the aquaporins and can changes deoxyribonucleic acid (DNA) integrity, which can result in aquaporins deficiency. The aim of this study was to evaluate the effect of HgCl2 and dithiothreitol (DTT) on aquaporins activity and on the integrity/degradation of DNA in embryonic axes of Schizolobium parahyba (Vell.) Blake during the germination process. Isolated axes were exposed to different concentrations of HgCl2 or DTT; and aquaporins activity, embryo hydration, and DNA integrity were evaluated during embryonic axes imbibition. Growth and changes in axis fresh weight were quantified. We found that the heavy metal affects seed hydration by inhibition of aquaporins activity and does not cause changes in DNA integrity.

Keywords: Aquaporins; Heavy metal; Forest seed

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Published

2020-04-22

How to Cite

Magistrali, P. R., Borges, E. E. de L. e, de Oliveira, J. A., Faria, J. M. R., Ataide, G. da M., & do Nascimento, J. F. (2020). MERCURY AFFECTS AQUAPORINS ACTIVITY AND GERMINATION OF THE EMBRYONIC AXIS OF Schizolobium parahyba (VELL.) BLAKE (FABACEAE). Revista Árvore, 43(06), https://doi.org/10.1590/1806–90882019000600001. Retrieved from https://revistaarvore.ufv.br/rarv/article/view/214162

Issue

Revista Árvore, Viçosa-MG, v.43, n.6, 2019

Section

Silviculture

License

All authors agreed to submit the work to Revista Árvore and granted the exclusive license to publish the article. The authors affirm that it is an original work and has not been previously published elsewhere. The scientific content and opinions expressed in the article are the sole responsibility of the authors and reflect their opinions, not necessarily representing the opinions of the editorial board of Revista Árvore or of the Society of Forest Investigations (SIF).

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