The Physiological Responses of Tea to pH and Cd Conditions and the Effect of the CsHMA2 on Cd Transport

Plants, Journal Year: 2025, Volume and Issue: 14(4), P. 570 - 570

Published: Feb. 13, 2025

Soil acidification in tea (Camellia sinensis L.) gardens leads to nutrient depletion, inhibits the growth of plants, reduces quality, and activates heavy metals such as cadmium (Cd) soil. To clarify impact soil pH under acidified conditions on plant physiology key genes involved Cd2+ transport this study planted 'Longjing 43' different levels (4.0, 4.5, 5.5) Cd concentrations (T1 = 0 mg L-1, T2 0.01 T3 0.05 T4 0.2 L-1). The results showed that concentration plants from highest lowest was root > stem mature leaves young leaves. Under T4, with decreasing pH, total chlorophyll significantly decreased, Fv/Fm stomatal aperture reduced, net photosynthetic rate transpiration decreased. In treatment at 4.0, contents free proline malondialdehyde were both highest, while superoxide dismutase (SOD), peroxidase (POD), catalase micrococcus lysodeiktic (CAT) a significant negative correlation pH. By screening genome data, nine CsHMAs metal ion identified. qRT-PCR indicated expression level CsHMA2 tea, localized cell membrane. transient overexpression enhanced ability Cd2+, whereas silencing weakened ability. These findings not only help understand how adapts regulates its physiological processes acidic environments but also provide an important theoretical basis technical guidance for improvement gardens, control pollution, optimization quality.

Language: Английский

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Application of Machine Learning Algorithms in Improving the Performance of Autonomous Vehicles

Scientific Journal of Technology, Journal Year: 2025, Volume and Issue: 7(2), P. 118 - 124

Published: Feb. 21, 2025

With the rapid development of intelligent transportation systems, autonomous driving technology relying on machine learning algorithms has received widespread attention. Although made significant improvements, how to utilize advanced further enhance its performance remains a core issue. This study aims analyze role in enhancing vehicles and discuss such as deep neural networks reinforcement can effectively solve key technical bottlenecks. A series innovative strategies based have been proposed address challenges currently faced by technology, insufficient sensor perception accuracy, contradiction between safety efficiency route planning, real-time constraints decision-making control. The goal these is improve perception, planning operational reliability auto drive system.

Language: Английский

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Impact of Fresh Leaf Elements on Flavor Components and Aroma Quality in Ancient Dancong Tea Gardens Across Varying Altitudes

Plants, Journal Year: 2025, Volume and Issue: 14(9), P. 1339 - 1339

Published: April 29, 2025

China′s ancient tea gardens boast a rich resource, and their unique environmental conditions cause quality differences. In this study, flavor components aroma compounds of fresh leaves from four Dancong (Zimao (ZMF), Baixiang (BX), Xialiao (HSK), Da′an (DAF)) at different altitudes were determined by HPLC GC–MS then correlated with elemental contents. The results showed that low-altitude ZMF had higher caffeine content (5.21%) astringency index (0.82) compared to other high-altitude gardens, which led more bitter taste astringent sensation. Fresh linalool (151.31 μg/kg) geraniol (61.09 than those gardens. Correlation analysis the indexes strong correlation element N (correlation coefficient: 0.74, 0.48); volatile significant positive or negative correlations various contents, among coefficient between Al was −0.83 (p < 0.001). lower Al, Si, Hf content, may bitterness differences in teas altitude study further provide guidance for scientific management

Language: Английский

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Ongoing Multivariate Chemometric Approaches in Bioactive Compounds and Functional Properties of Foods—A Systematic Review

Processes, Journal Year: 2024, Volume and Issue: 12(3), P. 583 - 583

Published: March 14, 2024

In this review, papers published in the chemometrics field were selected order to gather information and conduct a systematic review regarding food science technology; more precisely, domain of bioactive compounds functional properties foods. More than 50 covering different samples, experimental techniques chemometric presented, focusing on methods used their outcomes. This study is one way approach an overview current publications related subject matter. The application multivariate foods can open up even coming years, since it fast-growing highly competitive research area.

Language: Английский

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Recommended resources for tea in health and disease prevention

Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown, P. 957 - 963

Published: Oct. 1, 2024

Language: Английский

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