Resprouting strategies of three native shrub Cerrado species from a morphoanatomical and chemical perspective

Autor(es)

da Silva, Gabriela Santos ^[1] ; Ferraro, Alexandre ^[2] ; Lima de Aguiar, Claudio ^[3] ; Appezzato-da-Gloria, Beatriz ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Luiz Queiroz Coll Agr, Plant Anat Lab, Padua Dias Ave 11, BR-13418900 Piracicaba, SP - Brazil

^[2] Czech Acad Sci, Inst Bot, Dept Funct Ecol, Dukelska 135, Trebon 37901 - Czech Republic

^[3] Univ Sao Paulo, Luiz Queiroz Coll Agr, Hugot Sugar Technol Lab, Padua Dias Ave 11, BR-13418900 Piracicaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Australian Journal of Botany; v. 69, n. 8 OCT 2021.
• Citações Web of Science: 0

Resumo

This study was carried out in a Cerrado (the largest savanna in the Neotropics) area where pine plantations, introduced in the 1970s, were removed by clear cutting of the trees and burning of the remaining material. After the removal and burning, some native shrub species resprouted. Since resprouting is dependent on buds that can be in the belowground bud-bearing (BBB) organs containing reserves, we selected three resprouting Myrtaceae species for analysis of morphology and anatomy of their BBB organs, to determine which compounds could be accumulated and to investigate the bud protection features. Standard histological techniques were used to analyse the BBB organs. The belowground bud bank at a depth of 10 cm was determined. Nonstructural carbohydrates, total phenolics, and flavonoids were quantified on the roots. The large size of BBB organs suggest that these species were present before plantation establishment and survived plantation management treatments. All species produced a large number of axillary buds. All BBB organs exhibited significant lignification and stored starch and phenolic compounds in the parenchyma cells. The protective features and the storage of reserves associated with the bud-bank allowed the survival and subsequent resprouting of these species, contributing to the regeneration of this disturbed area. (AU)

• Processo FAPESP: 18/18887-5 - Anatomia das estruturas de rebrotamento e o banco de gemas de espécies de cerrado
• Beneficiário: Beatriz Appezzato da Glória
• Modalidade de apoio: Auxílio à Pesquisa - Regular