Publications by authors named "Carolina Falcato Fialho Palma"

Ultraviolet radiation (UV, 280-400 nm) as an environmental signal triggers metabolic acclimatory responses. However, how different light qualities affect UV acclimation during growth is poorly understood. Here, cucumber plants (Cucumis sativus) were grown under blue, green, red, or white light in combination with UV.

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Article Synopsis
  • - Heat and drought stress, exacerbated by climate change and increasing CO2 levels, significantly affect wheat growth and yield, highlighting the need for understanding their combined effects on different wheat genotypes.
  • - The study examined two wheat genotypes: heat-sensitive (SF29) and heat-tolerant (LM20) under stress conditions, finding that both improved water use efficiency (WUE) at elevated CO2, but reacted differently in terms of physiological and metabolite changes.
  • - While elevated CO2 enhanced the yield of both genotypes under non-stress conditions, it did not lead to improved yields under simultaneous heat and drought stresses, suggesting that different metabolic adaptations in each genotype influence their overall stress tolerance and productivity.
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During recent years, we have advanced our understanding of plant molecular responses to ultraviolet radiation (UV, 280-400 nm); however, how plants respond to UV radiation under different spectral light qualities is poorly understood. In this study, cucumber plants (Cucumis sativus "Lausanna RZ F1") were grown under monochromatic blue, green, red, and broadband white light in combination with UV radiation. The effects of light quality and UV radiation on acclimatory responses were assessed by measuring transcript accumulation of ELONGATED HYPOCOTYL 5 (HY5), CHALCONE SYNTHASE 2 (CHS2), and LIGHT HARVESTING COMPLEX II (LHCII), and the accumulation of flavonoids and hydroxycinnamic acids in the leaves.

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Abiotic stress due to climate change with continuous rise of atmospheric CO concentration is predicted to cause severe changes to crop productivity. Thus, research into wheat cultivars, capable of maintaining yield under limiting conditions is necessary. The aim of this study was to investigate the physiological responses of spring wheat to individual and combined drought- and heat events and their interaction with CO concentration.

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Ultraviolet B (UV-B) (280-315 nm) and ultraviolet A (UV-A) (315-400 nm) radiation comprise small portions of the solar radiation but regulate many aspects of plant development, physiology and metabolism. Until now, how plants respond to UV-B in the presence of different light qualities is poorly understood. This study aimed to assess the effects of a low UV-B dose (0.

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