Leaf Color and Growth Change of Sedum rubrotinctum Caused by Two Commercial Chemical Products

Abstract

<jats:p><jats:italic>Sedum rubrotinctum</jats:italic> is widely grown as an ornamental because of its attractive leaf shape and color. Increasing the morphological diversity and color will greatly add to its ornamental value. Environmental conditions such as light and temperature can change the leaf color of succulent plants, but the mechanism is uncertain. To examine this mechanism, we tested the effects of two commercial chemical products Sowing Goodliness (Sg) and Aromatic Garden (Ag) on the morphology, pigment content, and growth performance of <jats:italic>Sedum rubrotinctum</jats:italic> seedlings. The Sg treatment did not change foliage color, but can accelerate plant growth and increase lateral bud number. The Ag treatment had marked changes on the relative proportions of pigments and leaf color, and plant growth was severely reduced with mortality observed in some plants. After Ag stress was discontinued, the surviving plants began to regrow and had good ornamental value but had the fewest number of lateral buds and leaves, and the smallest leaf length and thickness, canopy diameter, and plant height. Foliage color changes are caused directly by shifts in the relative proportions of pigments, particularly chlorophyll b and anthocyanin. In Ag-treated plants, chlorophyll b declined much faster than chlorophyll a, indicating that the transformation of chlorophyll b into chlorophyll a is an important step in the chlorophyll degradation pathway. Ag provides a way to learn more about the mechanism of chlorophyll degradation and should be investigated further. Ag enhanced anthocyanin production rapidly and improved the ornamental value of <jats:italic>Sedum rubrotinctum</jats:italic>. Different concentrations of Ag and Sg were not studied in this trial and might be tested to determine the ideal balance between leaf color and plant growth.</jats:p>

The Effect of Combined Elicitation with Light and Temperature on the Chlorogenic Acid Content, Total Phenolic Content and Antioxidant Activity of Berula erecta in Tissue Culture

“…The appearance of purple leaves and necrosis was most likely related to exposure to a lower temperature, as the same changes were observed by Ambrožič-Dolinšek et al [ 32 ] when they exposed Berula erecta to a temperature of 13 °C in order to investigate slow growth [ 32 ]. Leaf colour is determined by the ratio of chlorophylls, carotenoids and anthocyanins [ 33 ]. We assume that anthocyanins are responsible for the purple colouration of the leaves, as anthocyanins are the predominant sub-class of coloured flavonoids that consist of red, purple or blue pigmentations in various plants [ 34 ].…”

“…We assume that anthocyanins are responsible for the purple colouration of the leaves, as anthocyanins are the predominant sub-class of coloured flavonoids that consist of red, purple or blue pigmentations in various plants [ 34 ]. The colour intensity of red leaves is increased by light stress, cool temperatures and slight drought during the anthocyanin synthesis phase that precedes chlorophyll degradation [ 33 ]. The anthocyanins’ accumulation increased significantly in plant tissues in response to low-temperature stress [ 35 ].…”

Jardim Sensorial: subsídios para escolha das espécies e elaboração de roteiros educativos

“…É nativa das regiões áridas do nordeste do México. As folhas são carnudas, dispostas alternadamente, cilíndricas e verdes (MA et al, 2019).…”

Effects of LED Light Quality Combinations on Growth and Leaf Colour of Tissue Culture-Generated Plantlets in Sedum rubrotinctum

“…The Sedum rubrotinctum plant is a perennial species that is a member of the Crassulaceae family, which is the third-largest family of succulent plant species. Gardening aficionados have a great deal of interest in S. rubrotinctum plants because they are resistant to drought, have tremendous vitality, are simple to handle, and have fleshy leaves that can change from green to vivid red (Ma et al, 2019). This species is used not only as an indoor potted plant but also for the landscaping of rock gardens, roof gardens or as a groundcover plant (Tuttolomondo et al, 2018).…”