Comparative anatomy of leaves of Kalanchoe pinnata and K. crenata in sun and shade conditions, as a support for their identification

Moreira, Nattacha S.; Nascimento, Luana Beatriz S.; Leal-Costa, Marcos Vinícius; Tavares, Eliana Schwartz

doi:10.1590/s0102-695x2012005000056

Cited by 27 publications

(29 citation statements)

References 18 publications

(26 reference statements)

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“…Some recent studies have shown that its phenolic composition can vary according to light conditions. This aspect has been observed in in vitro cultivation under blue light [24], under natural conditions in different collecting seasons [25], under light and shade [26] and in a greenhouse under UV-A and blue light [27]. In this last study, we found that supplemental blue light increased the antioxidant activity of plant extracts and caused changes in the phenolic profile of these extracts [27].…”

Section: Introductionsupporting

confidence: 64%

Ultraviolet-B radiation effects on phenolic profile and flavonoid content of Kalanchoe pinnata

Nascimento

Leal-Costa²,

Menezes

et al. 2015

Journal of Photochemistry and Photobiology B: Biology

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Section: Introductionsupporting

confidence: 64%

Ultraviolet-B radiation effects on phenolic profile and flavonoid content of Kalanchoe pinnata

Nascimento

Leal-Costa²,

Menezes

et al. 2015

Journal of Photochemistry and Photobiology B: Biology

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“…Phenolic idioblasts were detected earlier in the epidermis of Kalanchoë crenata (Andrews) Haw. (Moreira et al 2012) and Kalanchoë daigremontiana Raym.-Hamet and H. Perrier leaves (Chernetskyy et al 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies showed the presence of phenolic-producing cells located in the mesophyll of Inula viscosa (L.) Aiton leaves (Nikolakaki and Christodoulakis 2004) as well as Crassula multicava Lem. (Castro and Demarco 2008) and several Kalanchoë species (Leal-Costa et al 2010;Moreira et al 2012;Chernetskyy et al 2018). Different classes of phenolic compounds serve different functions.…”

Section: Discussionmentioning

confidence: 99%

Sites of secretion of bioactive compounds in leaves of Dracocephalum moldavica L.: anatomical, histochemical, and essential oil study

et al. 2019

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Dracocephalum moldavica L. is an aromatic plant emitting intense lemon scent. The aboveground parts of the plants constitute raw material for medicine and food industry. In contrast to the comprehensively investigated trichomes, there are only few studies of the histochemical characteristics of the leaves of essential oil-bearing plants from the family Lamiaceae. The present study shows the micromorphology, anatomy, and histochemistry of the leaves of the analysed species. The research aimed to determine the location of essential oil and other specialised metabolites in leaf tissues. The investigations of fresh and fixed material were carried out with the use of light, fluorescence, and scanning electron microscopy. Additionally, the content and composition of essential oil in the leaves were determined with the GC/MS method. The leaf epidermis had non-glandular unbranched trichomes and three types of glandular trichomes: peltate as well as long and short capitate trichomes. The results of the histochemical assays showed positive reactions to lipids and to some secondary compounds such as essential oil, terpenes, phenolic compounds, and flavonoids in all types of the glandular and non-glandular trichomes. The same compounds were found in the epidermis cells of the leaves. The results of the present study indicate that the intense smell of the leaves is associated with emission of essential oil not only by the glandular and non-glandular trichomes but also by the leaf epidermis cells. The main components in the essential oil (0.10%) include geranial, neral, geraniol, nerol, and trans-myrtanol acetate. Since D. moldavica has been used as an adulterant of Melissa officinalis L., the anatomical traits of leaves and the essential oil composition in both species were compared in the study.

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“…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).…”

Section: Introductionmentioning

confidence: 99%

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

Nascimento

Leal-Costa

Coutinho

et al. 2012

Photochem & Photobiology

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Antioxidant compounds protect plants against oxidative stress caused by environmental conditions. Different light qualities, such as UV-A radiation and blue light, have shown positive effects on the production of phenols in plants. Kalanchoe pinnata (Lamarck) Persoon (Crassulaceae) is used for treating wounds and inflammations. Some of these beneficial effects are attributed to the antioxidant activity of plant components. We investigated the effects of blue light and UV-A radiation supplementation on the total phenol content, antioxidant activity and chromatographic profile of aqueous extracts from leaves of K. pinnata. Monoclonal plants were grown under white light, white plus blue light and white plus UV-A radiation. Supplemental blue light improved the antioxidant activity and changed the phenolic profile of the extracts. Analysis by HPLC of supplemental blue-light plant extracts revealed a higher proportion of the major flavonoid quercetin 3-O-α-L-arabinopyranosyl (1→2) α-L-rhamnopyranoside, as well as the presence of a wide variety of other phenolic substances. These findings may explain the higher antioxidant activity observed for this extract. Blue light is proposed as a supplemental light source in the cultivation of K. pinnata, to improve its antioxidant activity.

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Comparative anatomy of leaves of Kalanchoe pinnata and K. crenata in sun and shade conditions, as a support for their identification

Cited by 27 publications

References 18 publications

Ultraviolet-B radiation effects on phenolic profile and flavonoid content of Kalanchoe pinnata

Ultraviolet-B radiation effects on phenolic profile and flavonoid content of Kalanchoe pinnata

Sites of secretion of bioactive compounds in leaves of Dracocephalum moldavica L.: anatomical, histochemical, and essential oil study

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

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