Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/48022
Title: Leaf anatomy characterization of four Apochloa species: a C3 genus related to evolution of C4 pathway in grasses
Other Titles: Caracterización anatómica de hojas de cuatro especies de Apochloa: un género relacionado con la evolución de la vía C4 en gramíneas
Keywords: Apochloa spp
C4 photosynthesis
Leaf anatomy
Poaceae
Subtribe arthropogoninae
Fotossíntese C4
Anatomia da folha
Gramínea
Issue Date: Mar-2021
Publisher: Universidad Nacional de Colombia
Citation: MENDONÇA, A. M. das C.; VIANA, P. L., BARBOSA, J. P. R. A. D. Leaf anatomy characterization of four Apochloa species: a C3 genus related to evolution of C4 pathway in grasses. Acta Biológica Colombiana, Bogotá, v. 26, n. 1, p. 12-18, ene./abr. 2021. DOI: http://dx.doi.org/10.15446/abc.v26n1.83228.
Abstract: Leaf anatomy characteristics provide important evidences about the transition between C3 and C4 pathways. The C4 photosynthesis pathway allowed to reduce the C3 photorespiratory rate, concentrating CO2 around the Rubisco site and using structures and machinery already presented in C3 plants. In monocots, it is observed a high number of C4 lineages, most of them phylogenetically related to C3 groups. The genus Apochloa (C3), subtribe Arthropogoninae, is related to two C4 genera Coleataenia and Cyphonanthus. The aim of this study was to evaluate four Apochloa species in order to establish anatomical characteristics related to the evolution of C4 pathway in this group. By means of transverse sections fully expanded leaves of A. euprepes, A. lorea, A. molinioides, and A. poliophylla were collected and the characteristics of the mesophyll (M) and bundle sheath (BS) cells were determined. These species showed a rustic Kranz anatomy with enlarged and radial arranged BS cells, which have few organelles organized in a centrifugal position. Although the modifications of BS cells are probably related to the maintenance of plant water status, we also discuss the evolution for the establishment of C4 photosynthesis in the related C4 genera.
URI: http://repositorio.ufla.br/jspui/handle/1/48022
Appears in Collections:DBI - Artigos publicados em periódicos



This item is licensed under a Creative Commons License Creative Commons