Publications by authors named "T Janda"

The extensive development in light-emitting diodes (LEDs) in recent years provides an opportunity to positively influence plant growth and biomass accumulation and to optimize biochemical composition and nutritional quality. This study aimed to assess how different light spectra affect the growth, photosynthesis and biochemical properties of Eruca sativa. Therefore two LED lighting modes - red:blue (RB, 1:1) and red:green:blue (RGB, 2:1:2) were compared to the conventional white light fluorescent tubes (WL).

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Article Synopsis
  • The study aimed to investigate how low temperatures experienced by rice leaves influence stress responses in the roots and how light conditions affect these processes.
  • Researchers exposed rice plants to low temperatures (12°C) while keeping roots at normal temperatures (27°C) and analyzed gene expression changes in the roots.
  • Findings revealed that low temperature exposure led to more down-regulated genes, particularly affecting nitrogen metabolism and related signaling, with additional insights from real-time PCR and metabolomics showing that both leaf cold exposure and light conditions impact root stress responses.
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Polyamines play an important role in growth and differentiation by regulating numerous physiological and biochemical processes at the cellular level. In addition to their roborative effect, their essential role in plant stress responses has been also reported. However, the positive effect may depend on the fine-tuning of polyamine metabolism, which influences the production of free radicals and/or signalling molecules.

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In the rhizosphere, the activities within all processes and functions are primarily influenced by plant roots, microorganisms present in the rhizosphere, and the interactions between roots and microorganisms. The rhizosphere, a dynamic zone surrounding the roots, provides an ideal environment for a diverse microbial community, which significantly shapes plant growth and development. Microbial activity in the rhizosphere can promote plant growth by increasing nutrient availability, influencing plant hormonal signaling, and repelling or outcompeting pathogenic microbial strains.

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