Variations in biomass and coumarin content of Justicia pectoralis Jacq.: Influence of season, harvest frequency and shade level

Autor: Pauline Zonta de Lima, Lucas Junqueira de Freitas Morel, Gustavo Henrique Teixeira Pinto, Silvia Helena Taleb Contini, Eduardo José Crevelin, José Elvino do Nascimento Júnior, Suzelei de Castro França, Bianca Waléria Bertoni, Ana Maria Soares Pereira
Přispěvatelé: Universidade Estadual Paulista (UNESP), Universidade de Ribeirão Preto, Universidade de São Paulo (USP), Universidade Federal de São João del Rei, Jardim Botânico de Plantas Medicinais Ordem e Progresso
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Popis: Made available in DSpace on 2022-04-29T08:37:28Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-02-01 Coumarin and umbelliferone are the active principles of Justicia pectoralis, a native Brazilian medicinal plant that is threatened by overexploitation and habitat fragmentation. Considering that its cultivation under appropriate conditions would be more sustainable than wild collection, here we examined how season, developmental stage, harvesting frequency, and light intensity affect the agronomical characteristics and chemical profile of a high-yield J. pectoralis genotype. Plants were propagated from cuttings, transplanted to experimental plots, and grown on under full sunlight or 50% and 80% shading. Plants were harvested after 3, 6, 9, and 12 months of growth, or pruned at these time points in a manner that allowed their regrowth over further 3 months. Chemical analysis of extracts from the aerial parts was performed by UPLC and HPLC. Cultivation under full sunlight or 50% shade promoted plant growth and production of coumarins the most effectively. Accumulation of coumarin and fresh and dry biomass were maximal in 12-month-old plants harvested in the summer, when the temperature was high, rainfall abundant, and flowering had terminated. The highest levels of umbelliferone were detected in 6-month-old flowering plants harvested in the winter, when the temperature was low and rainfall limited. The capacity of plants to accumulate biomass and coumarins did not decline with successive pruning and regrowth; hence, the genotype could be exploited in a continuous and systematic manner without frequent replanting. The results presented herein contribute to the large-scale cultivation of J. pectoralis and preparation of phytomedicines of quality. Departamento de Horticultura Universidade Estadual Paulista “Júlio de Mesquita Filho”, Botucatu Departamento de Biotecnologia Universidade de Ribeirão Preto, Ribeirão Preto Departamento de Química Universidade de São Paulo, Ribeirão Preto Departamento de Ciências Naturais Universidade Federal de São João del Rei Jardim Botânico de Plantas Medicinais Ordem e Progresso, Jardinópolis Departamento de Horticultura Universidade Estadual Paulista “Júlio de Mesquita Filho”, Botucatu
Databáze: OpenAIRE
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