Nitrogen and phytohormones in red color induction in Alcantarea imperialis (Carrière) Harms and Epidendrum denticulatum Barb.Rodr.

• Grant number: 16/14865-1
• Support Opportunities: Regular Research Grants
• Start date: November 01, 2016
• End date: October 31, 2018
• Field of knowledge: Biological Sciences - Botany - Pant Physiology
• Principal Investigator: Rogério Mamoru Suzuki
• Grantee: Rogério Mamoru Suzuki
• Host Institution: Instituto de Botânica. Secretaria de Meio Ambiente, Infraestrutura e Logística (São Paulo - Estado). São Paulo , SP, Brazil
• Associated researchers: Silvia Ribeiro de Souza ; Vivian Tamaki

Abstract

Alcantarea imperialis (Carrière) Harms is a rupicolous bromeliad widely used in landscaping and is threatened with extinction due to illegal extraction. Epidendrum denticulatum Barb.Rodr. is an orchid terrestrial or rupicolous present in Atlantic forest and Brazilian savanna. Depending on the environmental conditions the leaves have a stronger red color making it more attractive. Taking into account that colored plants are used as ornamental and landscaping projects, we aim to maximize the red pigmentation in plants of A. imperialis and E. denticulatum cultured in vitro, in less time and cost, for the production of plants with greater economic interest and landscaped. The study will be conducted with different sources of nitrogen (N) in combination with the phytohormones ethylene and methyl jasmonate, which stimulate the production of anthocyanins. Different levels and combinations of the chemicals will be tested in seedlings germinated under Murashige & Skoog medium. The red color index, biometric parameters, fresh and dry weight, photosynthetic pigments (chlorophyll a, b and carotenoids), anthocyanins, nitrogen composition and the production of ethylene and methyl jasmonate endogenous will be evaluated. To ensure that the optimal induction condition will not promote oxidative damage, the levels of antioxidant glutathione will also be analyzed. The results obtained in this study will not only contribute to the production of A. imperialis and E. denticulatum with higher added value, but mostly allow a significant scientific-technology experience in the field of ornamental plants. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

RODRIGUES JURAS, MONIQUE CRISTINE; PURGATTO, EDUARDO; FERREIRA, WAGNER DE MELO; SUZUKI, ROGERIO MAMORU. Direct organogenesis and ethylene regulators in the cloning of Epidendrum denticulatum (Orchidaceae). SOUTH AFRICAN JOURNAL OF BOTANY, v. 131, p. 374-379, JUL 2020. (16/14865-1)

DE ANDRADE-SANTOS, SABRINA VANESSA; YOUNG, JORGE LUIZ MARX; RAMIRO, LUANA KELLY; SUZUKI, ROGERIO MAMORU; SOUZA, SILVIA RIBEIRO; TAMAKI, VIVIAN. Effect of nitrate accumulation in the ornamental bromeliadAlcantarea imperialis. JOURNAL OF PLANT NUTRITION, v. 44, n. 2, AUG 2020. (16/14865-1)