Effects of light intensity on the distribution of anthocyanins in Kalanchoe brasiliensis Camb. and Kalanchoe pinnata (Lamk.) Pers

Abstract

This paper compares two medicinal species of Kalanchoe, which are often used interchangeably by the population, regarding the distribution of anthocyanins under the influence of four luminosity levels for 6 months. For the morphoanatomical analysis, the 6th stem node of each plant was sectioned. Usual histochemical tests revealed the presence of anthocyanins by cross sections of the stems, petioles and leaf blades. The petioles and leaf blades were submitted to the extraction with acidified methanol, and the anthocyanins were quantified by spectrophotometric readings. At the macroscopic level, it was noticed for both species a higher presence of anthocyanins in stems and petioles of plants under full sunlight. The microscopy of K. brasiliensis stems evidenced the deposition of anthocyanins in the subjacent tissue to the epidermis and cortex, which increased with light intensity. In K. pinnata a subepidermal collenchyma was observed, which interfered in the visualization of anthocyanins. In petioles and leaf blades of K. brasiliensis the deposition of anthocyanins was peripheral, and in K. pinnata it was also throughout the cortex. The quantification of anthocyanins in petioles showed in 70% of light higher averages than in 25%, but in leaf blades there were no significant results. This study contributes to the pharmacognosy of Kalanchoe and it is sustained by the description of flavonoids as biological markers of the genus.

Increased Antioxidant Activity and Changes in Phenolic Profile of Kalanchoe pinnata (Lamarck) Persoon (Crassulaceae) Specimens Grown Under Supplemental Blue Light

“…K. pinnata is rich in phenolic compounds, which account for some of these biological activities (25). The composition of phenolics can vary according to light conditions (33)(34)(35)(36).…”

Antidiabetic Activity of Ethanolic Extract of Kalanchoe Pinnata Leaves in Alloxan Induced Hyperglycaemic Rats.

“…K. pinnata leaves contain anthocyanins that considered responsible for its antidiabetic, anticancer, cardiovascular, and neurological activity (Cruz et al, 2012). Anthocyanins are water soluble flavonoid compounds that gives color in plant (Cruz et al, 2012). Phytochemistry study of the KPE used in this study revealed flavonoids and steroids compound and isolated quercetin glycosides (Fajriyah, 2011).…”

“…Therefore, several study have been conducted to evaluate its bioactivity, such as antidiabetics, anticonvulsant, antinociceptive, antiedematogenic, antiinflammatory, anticancer and antiHPV, antileishmanial (Patil et al, 2013;Mora-Perez et al, 2016;Ferreira et al, 2014;Mahata et al, 2012;Muzitano et al, 2006). K. pinnata leaves contain anthocyanins that considered responsible for its antidiabetic, anticancer, cardiovascular, and neurological activity (Cruz et al, 2012). Anthocyanins are water soluble flavonoid compounds that gives color in plant (Cruz et al, 2012).…”

Morphological characteristics and isozyme banding patterns of Cucurbita moschata at different altitudes

“…19 (5): 168319 (5): -168919 (5): , September 201819 (5): 1688 In general, the color of stem of C. moschata particularly grew at middle altitudes was darker compared two other altitudes. This could be due to the optimum of light intensity produced, and this could influence the anthocyanine pigment on the stem, so that it will influence the quality of stem color (Cruz et al 2012).…”

“…The flower colors at the highest altitude usually look brighter when they were compared with other altitudes. This occurrence may be due to different light intensity could influence the distribution of color pigment on the plant (Cruz et al 2012). Moreover, Shrestha et al (2014) said the difference in flower color could be influenced by pollinator richness within a plant habitat.…”