Two novel reports of semidry stigmatic surface in Asteraceae

Teixeira, Simone de Pádua; Capucho, Liana Carneiro; Machado, Sílvia Rodrigues

doi:10.1016/j.flora.2010.08.001

Cited by 4 publications

(1 citation statement)

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“…The histochemical analyses performed here, corroborate these findings showing impregnation of lipophilic compounds in the cuticle and cell walls of stigmatic papillae but also in all the epidermal style cells. Similar results were obtained in genera of other subfamilies of Asteraceae, Lessingianthus and Lucilia (Teixeira et al 2011), where lipids stained with Sudan III technique were reported in stigmatic papillary cells. We extend these findings by showing that the sweeping hairs, together with the other style cells, with the notable exception of the stigmatic cells, have lipophilic substances in the interior of the cells.…”

Section: Histochemistry and Taxonomysupporting

confidence: 86%

Taxonomic value of histochemical features of the style in early lineages of Asteraceae

Hernández¹,

Katinas²,

Arambarri³

2015

Acta Bot. Bras.

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In this paper we examine lipophilic substances, tannins, proteins, reducing carbohydrates, starch, and oxalate salts in early lineages of Asteraceae to test if they are a useful complement to classification studies. Styles of mature flowers of 44 species were processed according to plant histochemical techniques and observed by means of a light microscope. Lipophilic compounds were always present in the cuticle and cell walls, and in some species were located inside the cells. Proteins were located in the style cell walls and cell interior of most of the analyzed species. No tannins were found. In general, there is a correlation in the presence of reducing sugars and proteins. Starch granules and oxalate salts were found in the style parenchyma of a few species. Cytoplasmic content of lipophilic compounds, proteins, and reducing sugars predominates in Barnadesioideae and Nassauvieae (Mutisioideae), and histochemical similarities were found among members of Gochnatioideae.

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Section: Histochemistry and Taxonomysupporting

confidence: 86%