Carbon isotope composition and leaf anatomy as a tool to characterize the photosynthetic mechanism of Artemisia annua L.


Autoria(s): Marchese, José Abramo; Broetto, Fernando; Lin, Chau Ming; Ducatti, Carlos; Rodella, Roberto Antonio; Ventrella, Marília Contin; Rodrigues Gomes, Greice Daiane; De Franceschi, Lúcia
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

27/05/2014

27/05/2014

01/01/2005

Resumo

Leaves of Artemisia annua L. are a plentiful source of artemisinin, a drug with proven effectiveness against malaria. The aim of this study was to classify the photosynthetic mechanism of A. annua through studies of the carbon isotope composition (δ 13C) and the leaf anatomy. A. annua presented a δ 13C value of - 31.76 ± 0.07, which characterizes the plants as a typical species of the C3 photosynthethic mechanism, considering that the average δ 13C values for C3 and C4 species are -28 and -14, respectively. The leaf anatomy studies were consistent with the δ 13C results, where, in spite of the existence of parenchymatic cells forming a sheath surrounding the vascular tissue, the cells do not contain chloroplasts or starch. This characteristic is clearly different from that of the Kranz anatomy found in C4 species.

Formato

187-190

Identificador

http://dx.doi.org/10.1590/S1677-04202005000100016

Brazilian Journal of Plant Physiology, v. 17, n. 1, p. 187-190, 2005.

1677-0420

http://hdl.handle.net/11449/68094

10.1590/S1677-04202005000100016

S1677-04202005000100016

2-s2.0-18444399306

2-s2.0-18444399306.pdf

Idioma(s)

eng

Relação

Brazilian Journal of Plant Physiology

Direitos

openAccess

Palavras-Chave #C3 and C4 plants #Isotope discrimination #Kranz anatomy #Photosynthesis #Artemisia annua
Tipo

info:eu-repo/semantics/article