Ontogeny of anastomosed laticifers in the stem apex of Hancornia speciosa (Apocynaceae): a topographic approach

Protoplasma
Mayara Pereira GonçalvesLeonardo Monteiro Ribeiro

Abstract

Latex is a complex plant secretion with both ecological and economic importance. There is little information currently available on the cytological aspects of the ontogenesis of anastomosed laticifers, the ducts originating through the lysis of adjacent cell walls. Hancornia speciosa is a tree typical of the Cerrado (neotropical savanna) biome. Its latex has medicinal value and is also used to produce rubber. The ontogenesis of its laticifers and the process of latex synthesis are described here. Structural, cytochemical, and ultrastructural analyses of the stem apex and phytochemical analyses of the latex were performed. Laticifer ontogenesis begins early in promeristem cells and subsequently extends through the procambial region. The laticifer precursor cells demonstrate intense metabolic activity, evidenced by starch accumulation and the proliferation of mitochondria, dictyosomes, endoplasmic reticulum, and ribosomes-resulting in the thickening of the cell walls and accumulations of oil droplets in the cytoplasm and fibrous materials in the vacuoles. The ontogenetic process culminates with the partial dissolution of adjacent cell walls and the collapse of the cytoplasm, giving rise to anastomosed laticifers distributed throu...Continue Reading

References

Jan 1, 1973·The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society·P Pizzolato, R D Lillie
Jul 4, 2006·The Plant Journal : for Cell and Molecular Biology·Nailish SamananiPeter J Facchini
Aug 23, 2006·Ecology·Anurag A Agrawal, Mark Fishbein
Dec 15, 2010·Methods in Molecular Biology·Elder Antônio Sousa PaivaDenise Maria Trombert Oliveira
Apr 6, 2011·Journal of Ethnopharmacology·Diogo Guimarães MarinhoPatricia Dias Fernandes
Sep 11, 2013·Comptes rendus biologies·Maria Olívia Mercadante-Simões, Elder Antônio Sousa Paiva
Oct 10, 2013·The Plant Cell·Akpevwe OnoyovwePeter J Facchini
Jun 30, 2014·Journal of Materials Science. Materials in Medicine·Luciane Madureira AlmeidaPablo José Gonçalves
Dec 17, 2014·Journal of Ethnopharmacology·Aline C PereiraSteyner F Cortes
Dec 23, 2014·Plant Physiology and Biochemistry : PPB·Delia SpanòRosaria Medda
Nov 21, 2015·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Vanessa de A RoyoPerácio Rafael B Ferreira
Mar 5, 2016·Journal of Ethnopharmacology·Juliana Dos Santos NevesPedro Duarte Novaes

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Citations

Jan 10, 2020·American Journal of Botany·Michely de Jesus SouzaLeonardo Monteiro Ribeiro
Jul 24, 2021·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Edca Priscila Cardoso Ferreira CamposKarina Perrelli Randau
Aug 31, 2021·Current Opinion in Plant Biology·Arielle R JohnsonMargaret H Frank

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Methods Mentioned

BETA
scanning electron microscopy
scanning
transmission electron microscopy

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