Publications by authors named "L K Samarina"
Background: Breeding programs for nutrient-efficient tea plant varieties could be advanced by the combination of genotyping and phenotyping technologies. This study was aimed to search functional SNPs in key genes related to the nitrogen-assimilation in the collection of tea plant (L.) Kuntze.
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- The study utilized a novel experimental design to identify key biological pathways affected by nitrogen deficiency in an evergreen tree crop, highlighting processes like lignin biosynthesis and defense responses.
- The research found significant upregulation of the MAPK pathway and ATP-binding cassette transporters, with a greater focus on calcium signaling over hormone signaling, particularly involving auxin and abscisic acid.
- A total of 45 transcription factors were increased under nitrogen deficiency, indicating a shared regulatory role in both nitrogen and pathogen responses, especially in relation to flavanoids and cell wall integrity.
Article Synopsis
- Early detection of stress in tea plants is essential for improving breeding strategies and understanding plant genetics.
- Hyperspectral technology enables rapid assessment of plant health through specific reflectance indices, but these must be validated for each crop.
- Out of 31 vegetation indices studied, several were effective in distinguishing between stress-tolerant and susceptible tea plants, particularly those that utilize near-infrared reflectance, which aids in managing tea germplasm under abiotic stress conditions.
Article Synopsis
- - Researchers discovered that a protein called LUX ARRHYTHMO (LUX) plays a crucial role in helping tea plants (Camellia sinensis) tolerate cold stress, which can hurt both the plant's quality and yield.
- - The study showed that the expression of the CsLUX gene varies with the time of day and increases significantly when the plants experience cold temperatures, indicating its role in regulating freezing tolerance.
- - A specific genetic variation (C-to-A) in the CsLUX gene was identified as beneficial for cold response, highlighting its potential use as a molecular marker in breeding programs aimed at enhancing cold resistance in tea plants.
Tea has historically been one of the most popular beverages, and it is currently an economically significant crop cultivated in over 50 countries. The Northwestern Caucasus is one of the northernmost regions for industrial tea cultivation worldwide. The domestication of the tea plant in this region took approximately 150 years, during which plantations spreading from the Ozurgeti region in northern Georgia to the southern city of Maykop in Russia.
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