Publications by authors named "Julia Krasensky"
Article Synopsis
- High salinity stress negatively affects plant growth, and trehalose metabolism may help improve stress tolerance, but the specific molecular mechanisms are still not fully understood.
- Researchers found that AtTPPD, a key enzyme in trehalose metabolism in Arabidopsis thaliana, is localized in chloroplasts, and plants either lacking or overexpressing this enzyme show differing levels of salt stress tolerance, which is linked to sugar metabolism.
- The study reveals that AtTPPD activity is regulated by redox status through certain cysteine residues, suggesting that similar regulatory mechanisms could exist across various plant types for adjusting to environmental challenges.
Article Synopsis
- The study investigates how a protein called ASKα from the plant Arabidopsis thaliana helps combat stress from high salt by activating an enzyme known as Glc-6-phosphate dehydrogenase (G6PD) that maintains redox balance.
- Loss of ASKα reduces the activity of G6PD, leading to higher levels of reactive oxygen species (ROS) and increased sensitivity to salt stress.
- Conversely, plants that overexpress ASKα show enhanced G6PD activity, lower ROS levels, and greater tolerance to salt stress, revealing a new mechanism for how plants manage oxidative stress.
Plants regularly face adverse growth conditions, such as drought, salinity, chilling, freezing, and high temperatures. These stresses can delay growth and development, reduce productivity, and, in extreme cases, cause plant death. Plant stress responses are dynamic and involve complex cross-talk between different regulatory levels, including adjustment of metabolism and gene expression for physiological and morphological adaptation.
View Article and Find Full Text PDFBackground: Abiotic stresses adversely affect plant growth and development. The hormone abscisic acid (ABA) plays a central role in the response and adaptation to environmental constraints. However, apart from the well established role of ABA in regulating gene expression programmes, little is known about its function in plant stress metabolism.
View Article and Find Full Text PDFAtMPB2C is the Arabidopsis (Arabidopsis thaliana) homolog of MPB2C, a microtubule-associated host factor of tobacco mosaic virus movement protein that was been previously identified in Nicotiana tabacum. To analyze the endogenous function of AtMPB2C and its role in viral infections, transgenic Arabidopsis plant lines stably overexpressing green fluorescent protein (GFP)-AtMPB2C were established. The GFP-AtMPB2C fusion protein was detectable in various cell types and organs and localized at microtubules in a punctuate pattern or in filaments.
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