Hydroxycinnamic acids in sunflower leaves serve as UV-A screening pigments
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چکیده
منابع مشابه
Hormonal and Hydroxycinnamic Acids Profiles in Banana Leaves in Response to Various Periods of Water Stress
The pattern of change in the endogenous levels of several plant hormones and hydroxycinnamic acids in addition to growth and photosynthetic performance was investigated in banana plants (Musa acuminata cv. "Grand Nain") subjected to various cycles of drought. Water stress was imposed by withholding irrigation for six periods with subsequent rehydration. Data showed an increase in abscisic acid ...
متن کاملUV photoreceptors and UV-yellow wing pigments in Heliconius butterflies allow a color signal to serve both mimicry and intraspecific communication.
Mimetic wing coloration evolves in butterflies in the context of predator confusion. Unless butterfly eyes have adaptations for discriminating mimetic color variation, mimicry also carries a risk of confusion for the butterflies themselves. Heliconius butterfly eyes, which express recently duplicated ultraviolet (UV) opsins, have such an adaptation. To examine bird and butterfly color vision as...
متن کاملMycosporine-like amino acids (MAAs): chemical structure, biosynthesis and significance as UV-absorbing/screening compounds.
Continuous depletion of the stratospheric ozone layer has resulted in an increase in ultraviolet-B (UV-B; 280-315 nm) radiation on the earth's surface which inhibits photochemical and photobiological processes. However, certain photosynthetic organisms have evolved mechanisms to counteract the toxicity of ultraviolet or high photosynthetically active radiation by synthesizing the UV-absorbing/s...
متن کاملH2O2 Accumulation in Sunflower Leaves as a Consequence of Iron Deprivation
The present work aimed at evaluating in sunflower leaves: the relationship between Fe-deficiency and the possible accumulation of H2O2; the activity of some extracellular enzymatic and non-enzymatic systems involved in H2O2 production and scavenging. Iron-deficient leaves exhibited a significant H2O2 accumulation, monitored at extracellular level by electron microscopy analysis. Such an increas...
متن کاملProduction of Cinnamic and p-Hydroxycinnamic Acids in Engineered Microbes
The aromatic compounds cinnamic and p-hydroxycinnamic acids (pHCAs) are phenylpropanoids having applications as precursors for the synthesis of thermoplastics, flavoring, cosmetic, and health products. These two aromatic acids can be obtained by chemical synthesis or extraction from plant tissues. However, both manufacturing processes have shortcomings, such as the generation of toxic subproduc...
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ژورنال
عنوان ژورنال: Photochemical & Photobiological Sciences
سال: 2019
ISSN: 1474-905X,1474-9092
DOI: 10.1039/c8pp00440d