Effect of photoperiod on flavonoid pathway activity in sweet potato (Ipomoea batatas (L.) Lam.) leaves

Carvalho, Isabel S.; Cavaco, Teresa; Carvalho, Lara; Duque, Paula

doi:10.1016/j.foodchem.2009.05.005

Cited by 101 publications

(69 citation statements)

References 27 publications

(28 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Anthocyanin accumulation and coloration of fruits are affected by many cultivation practices, such as the use of reflective mulches or bagging, that may change the light environment within the tree canopy and around individual fruits (Ju et al 1999;Huang et al 2009;Overbeck et al 2013). The contents of flavonoids such as anthocyanin, catechins and flavonols increased in the leaves of Phillyrea latifolia and sweet potato during leaf exposure to sunlight or a long-day photoperiod (Carvalho et al 2010;Tattini et al 2014). We did not observe a red color in the leaves or calli under short-day conditions or in darkness.…”

Section: Discussionmentioning

confidence: 99%

Photoperiod and shading regulate coloration and anthocyanin accumulation in the leaves of malus crabapples

Zhang

Meng

et al. 2015

Plant Cell Tiss Organ Cult

View full text Add to dashboard Cite

In many ornamental plants, anthocyanin accumulation in leaves is a critical determinant of foliage coloration. However, the mechanism by which photoperiod and shading affect coloration and anthocyanin accumulation in the leaves of woody plants is less clear. By examining the leaves and calli of crabapple (Malus spp.) cultivars with different leaf color characteristics, we analyzed the foliage coloration, flavonoid contents, and expression levels of anthocyanin biosynthetic genes and the McMYB10 transcription factor under different photoperiods and shading treatments. The red color parameters, flavonoid contents, and expression levels of some anthocyaninrelated genes in both the leaf and callus were generally higher under sun-exposure or long-day treatments compared to shading or short-day treatments. These data indicate that red color formation in cultivars with leaves that are naturally red requires a suitable photoperiod and light intensity; high light intensity or long-day conditions activate anthocyanin biosynthesis-related genes, leading to anthocyanin accumulation. Our results also indicate that the regulation of anthocyanin biosynthetic metabolism in response to light conditions differs between red-leafed and green-leafed cultivars. Taken together, our data reveal that photoperiod and light intensity are important in the regulation of pigmentation and anthocyanin accumulation in crabapple leaves and calli. Moreover, we provide a useful approach for studying and inducing the production of flavonoids by crabapple callus culture under certain photoperiods.

show abstract

Section: Discussionmentioning

confidence: 99%

Photoperiod and shading regulate coloration and anthocyanin accumulation in the leaves of malus crabapples

Zhang

Meng

et al. 2015

Plant Cell Tiss Organ Cult

View full text Add to dashboard Cite

show abstract

“…In recent years, a mounting interest in producing food crops with increased levels of flavonoids necessitated the need to combine targeted metabolomic and transcriptomic approaches that might possibly help in determining gene-metabolite relationships. Carvalho, Cavaco, Carvalho, and Duque (2010) showed a strong correlation between the expressions of genes in flavonoid pathway. Furthermore, anthocyanin was found to be strongly associated with DFR gene.…”

Section: Differential Expression Of Flavonoid Pathway Genesmentioning

confidence: 95%

Comparative analysis of phytochemicals and nutrient availability in two contrasting cultivars of sweet potato (Ipomoea batatas L.)

et al. 2015

View full text Add to dashboard Cite

“…) to 24 h (Carvalho et al . ) (Table ). To study the effect of longer times, extraction was allowed for 24, 48 and 72 h. Extraction with acidic solvents may release compounds initially part of polymers or bounded to others.…”

Section: Resultsmentioning

confidence: 99%

“…Consumer demand for foods that contain health-promoting components beyond traditional nutrients has stove interest in functional foods (Carvalho et al 2006(Carvalho et al , 2010. Sweet potato (SP) (Ipomoea batatas L.…”

Section: Introductionmentioning

confidence: 99%

Spotlight on PGI Sweet Potato from Europe: Study of Plant Part, Time and Solvent Effects on Antioxidant Activity

Anastácio

Carvalho

2013

Journal of Food Biochemistry

Self Cite

View full text Add to dashboard Cite

Sweet potato (SP) has long been used as food and in traditional medicine. For the first time, total antioxidant activity (TAA), reducing power (RP), ferric‐reducing antioxidant power (FRAP) and 1,1‐diphenyl‐2‐picryl‐hydrazyl (DPPH) antioxidant activities from European sweet potato vines holding a Protected Geographic Indication (PGI) were studied through a factorial design. Plant part was the main influential factor followed by solvent acidification. Principal component analysis revealed total phenolic content, total flavonoid content, FRAP and RP assays more related to sample differences (stems or leaves) and DPPH to extraction conditions, namely solvent acidification. The in vitro antioxidant activities of leaves were 1.25 g AAE/100 g dw for TAA and 50.8 g GAE/100 g dw for RP. DPPH scavenging activity was higher than FRAP (i.e., 58.6 and 29.3 and μM Trolox/g dw, respectively). Stems results were 1.3 to 9.2 times lower than leaves. These outcomes confirmed SP leaves a potential resource of antioxidants in the human diet that may add supplementary value to PGI agriculture products. Practical Application Vines, especially leaves, from PGI sweet potatoes could be advantageously used as a natural source of antioxidants, with potential to be used as a food in the diet. Focus on sweet potato of European origin may contribute to increase interest on its cultivation and consumption. In addition, insights on the potential added value present in Protected Geographic Indication (PGI) agriculture products may enhance protected demonization turnover for producers. Industries that pursuit food with functional applications may consider sweet potato vines in their new product development processes, aiming for health benefits.

show abstract

Effect of photoperiod on flavonoid pathway activity in sweet potato (Ipomoea batatas (L.) Lam.) leaves

Cited by 101 publications

References 27 publications

Photoperiod and shading regulate coloration and anthocyanin accumulation in the leaves of malus crabapples

Photoperiod and shading regulate coloration and anthocyanin accumulation in the leaves of malus crabapples

Comparative analysis of phytochemicals and nutrient availability in two contrasting cultivars of sweet potato (Ipomoea batatas L.)

Spotlight on PGI Sweet Potato from Europe: Study of Plant Part, Time and Solvent Effects on Antioxidant Activity

Contact Info

Product

Resources

About