Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/29944
metadata.artigo.dc.title: Leaf ontogeny of Schinus molle L. plants under cadmium contamination: the meristematic origin of leaf structural changes
metadata.artigo.dc.creator: Pereira, Marcio Paulo
Corrêa, Felipe Fogaroli
Castro, Evaristo Mauro de
Oliveira, Jean Paulo Vitor de
Pereira, Fabricio José
metadata.artigo.dc.subject: Pepper tree
Leaf primordia
Leaf meristems
Cell elongation rate
Heavy metal
metadata.artigo.dc.publisher: Springer
metadata.artigo.dc.date.issued: Nov-2017
metadata.artigo.dc.identifier.citation: PEREIRA, M. P. et al. Leaf ontogeny of Schinus molle L. plants under cadmium contamination: the meristematic origin of leaf structural changes. Protoplasma, [S.l.], v. 254, n. 6, p. 2117–2126, Nov. 2017.
metadata.artigo.dc.description.abstract: Previous works show the development of thicker leaves on tolerant plants growing under cadmium (Cd2+) contamination. The aim of this study was to evaluate the Cd2+ effects on the leaf meristems of the tolerant species Schinus molle. Plants were grown in nutrient solution containing 0, 10, and 50 μM of Cd2+. Anatomical analysis was performed on leaf primordia sampled at regular time intervals. Under the lowest Cd2+ level (10 μM), increased ground meristem thickness, diameter of the cells, cell elongation rate, and leaf dry mass were found. However, 50 μM of Cd2+ reduced all these variables. In addition, the ground meristem cells became larger when exposed to any Cd2+ level. The epidermis, palisade parenchyma, and vascular tissues developed earlier in Cd2+-exposed leaves. The modifications found on the ground meristem may be related to the development of thicker leaves on S. molle plants exposed to low Cd2+ levels. Furthermore, older leaves showed higher Cd2+ content when compared to the younger ones, preventing the Cd2+ toxicity to these leaves. Thus, low Cd2+ concentrations change the ground meristem structure and function reflecting on the development of thicker and enhanced leaves.
metadata.artigo.dc.identifier.uri: https://link.springer.com/article/10.1007/s00709-017-1103-2
http://repositorio.ufla.br/jspui/handle/1/29944
metadata.artigo.dc.language: en_US
Appears in Collections:DBI - Artigos publicados em periódicos

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