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[学术文献 ] Smart Agricultural Pest Detection Using I-YOLOv10-SC: An Improved Object Detection Framework 进入全文
Agronomy-Besal 期刊
Aiming at the problems of insufficient detection accuracy and high false detection rates of traditional pest detection models in the face of small targets and incomplete targets, this study proposes an improved target detection network, I-YOLOv10-SC. The network leverages Space-to-Depth Convolution to enhance its capability in detecting small insect targets. The Convolutional Block Attention Module is employed to improve feature representation and attention focus. Additionally, Shape Weights and Scale Adjustment Factors are introduced to optimize the loss function. The experimental results show that compared with the original YOLOv10, the model generated by the improved algorithm improves the accuracy by 5.88 percentage points, the recall rate by 6.67 percentage points, the balance score by 6.27 percentage points, the mAP value by 4.26 percentage points, the bounding box loss by 18.75%, the classification loss by 27.27%, and the feature point loss by 8%. The model oscillation has also been significantly improved. The enhanced I-YOLOv10-SC network effectively addresses the challenges of detecting small and incomplete insect targets in tea plantations, offering high precision and recall rates, thus providing a solid technical foundation for intelligent pest monitoring and precise prevention in smart tea gardens.
[学术文献 ] Integrated Metabolomic and Transcriptomic Profiling Reveals the Defense Response of Tea Plants (Camellia sinensis) to Toxoptera aurantii 进入全文
Journal of Agricultural and Food Chemistry 期刊
The tea plant (Camellia sinensis) is a unique beverage crop worldwide, but its yield and quality are adversely affected by Toxoptera aurantii. However, the response mechanisms of tea plants to T. aurantii stress remain poorly known. Herein, we present the life table of T. aurantii on resistant (W016) and susceptible (HJY) tea cultivars, demonstrating that the fitness of T. aurantii on W016 was lower than that on HJY. Integrated metabolic and transcriptomic analyses revealed that T. aurantii feeding activated pathways associated with phenylpropanoid biosynthesis, plant hormone signal transduction, and ATP-binding cassette (ABC) transporters. Notably, T. aurantii feeding significantly upregulated the levels of brassinolide and p-coumaryl alcohol in W016 but not in HJY. Furthermore, in vitro enzymatic assays indicated that C. sinensis cinnamyl alcohol dehydrogenase (CsCAD1) catalyzes the formation of p-coumaryl alcohol participation in lignin synthesis. Our findings highlight the role of brassinolide-mediated lignin biosynthesis of the tea plant in response to T. aurantii feeding.
[学术文献 ] Optimizing the size of mesoporous silica nano-delivery system enhances the absorption, transport, and retention of pesticides in tea plants 进入全文
Industrial Crops and Products 期刊
We synthesized mesoporous silica nano-delivery systems with mean diameters of 27, 54, and 114 nm to encapsulate acetamiprid and investigated their uptake, translocation, and distribution following foliar application in tea plants. Among these, the 54 nm nano-delivery system exhibited superior absorption and transport capacity, allowing it to enter cells, whereas nano-delivery systems of other sizes demonstrated limited cellular uptake. As a result, only the 54 nm nano-delivery system effectively penetrated vascular tissue via the symplastic pathway, reaching the stem and predominantly accumulating in the xylem. Interestingly, nano-delivery systems within the vascular tissue retained the capacity to release acetamiprid, potentially facilitating continuous absorption and transport of acetamiprid within the tea plants. This feature is crucial for combating piercing-sucking pests that feed on plant sap by piercing the host plant's vascular tissue. These findings pave the way for designing nano-delivery systems with optimal particle sizes to enhance pesticide absorption, transportation, and persistence, thus achieving long-term control of piercing-sucking pests and increasing yields of tea plants.
[前沿资讯 ] Growth in Tea Packaging Market Driven by a Number of Factors 进入全文
World tea News 网站
ResearchAndMarkets.com最近发布了一份题为“2025-2034年茶叶包装机遇、增长动力、行业趋势分析”的新报告。报告显示，2024年全球茶叶包装市场的价值为63亿美元，预计2025-2034年的复合年增长率将达到5.4%。特别是在北美，包装市场预计到2034年将达到22亿美元。预计到2034年，仅美国市场就将增长到19亿美元。这一增长得益于全球茶叶消费的增长、即饮茶选择的迅速扩大以及对优质茶叶产品需求的增加。包装也在转向绿色，因为现代茶叶消费者优先考虑可持续性，推动了对可生物降解和可回收材料制成的包装的需求。符合这些环境偏好的品牌通过采用环保包装解决方案获得了竞争优势。其他驱动因素包括有机和特色茶的日益普及，这要求使用反映产品高质量特性的优质包装。包含可重复密封选项、防潮层和遮光性的包装设计正成为标准功能。电子商务的兴起也增加了对包装的需求，特别是坚固、有吸引力和功能性的包装，能够承受运输的严格要求。
[学术文献 ] Not just flavor: Insights into the metabolism of tea plants 进入全文
Current Opinion in Plant Biology 期刊
Tea, one of the world's most popular beverages, boasts a rich cultural history and distinctive flavor profiles. With advances in genomics and plant metabolism research, significant progress has been made in understanding the biosynthetic pathways and the underlying regulatory mechanisms of tea plants (Camellia sinensis). Tea metabolites play a pivotal role in determining tea flavor, and functional properties, while also being closely tied to the plant's stress resistance, environmental adaptability, and other newly discovered biological functions. In recent years, research has expanded beyond the well-characterized metabolites, such as catechins, l-theanine, and caffeine, to include volatile compounds, hormones, photosynthetic pigments, lignin, and other recently discovered metabolites, shedding new light on the intricate tea plant metabolism. This review highlights the biosynthetic pathways and regulatory mechanisms of key metabolites in tea plants, with a focus on the critical enzyme genes and regulatory factors. Additionally, emerging technologies and methodologies applied in tea plant metabolism research are briefly introduced. By further exploring the biological functions of tea metabolites and their upstream regulatory networks, future studies may offer theoretical insights and technological support for tea plant cultivation, tea quality improvement, and the sustainable development of the tea industry.
[会议论文 ] The optimization of pyrethroid simultaneous analysis in tropical soil of Indonesian tea plantation: Preliminary study 进入全文
IOP Proceedings Paper
The preliminary study for the simultaneous analysis of five synthetic pyrethroids (lambda-cyhalothrin, permethrin, cypermethrin, fenvalerate, and deltamethrin) in tropical soil of tea plantation has been performed. The objective of this study is to perform an optimum condition for simple method development, based on green analytical chemistry. The concentrations of 0.1 mu g/g for all pyrethroids were evaluated using ultrasonic and microwave-assisted extraction. The quantification was performed using gas chromatographyelectron capture detection (GC-ECD). Based on the experiment, the 0.5 mm soils size particles and 30 minutes sonication times were set as optimal condition for ultrasonic-assisted extraction with the best recovery yields of spiked soils were from 80 to 105 % for each pyrethroid and repeatability represent by the relative standard deviation (RSD, %) ranging of 1.1 - 4.8 %. Results were comparable with those found by microwave-assisted extraction. The result shows that the reproducibility, which is represented by recoveries obtained, ranged from 151 - 276 %, and were unacceptable because the value was beyond the specific range that was proposed by the Association of Analytical Communities (AOAC) International. The ultrasonic-assisted extraction was applicable for pyrethroids analysis in the real sample, with concentration found was 0.01 to 0.12 mu g/g.
