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[统计数据 ] Tea Export value from Five Continents in 2023 (FAOSTAT) 进入全文
FAO 网站
根据FAOSTAT，最新统计了2023年度五大洲和世界茶叶出口额（1000 USD），以及相应数据标记说明，详细数据见表Tea Export value from Five Continents in 2023 (FAOSTAT)。
[学术文献 ] The endophytic bacterium Bacillus subtilis R8 as a prospective biocontrol agent for managing tea blister blight and enhancing tea yield 进入全文
BioControl 期刊
Blister blight, caused by the fungus Exobasidium vexans, is a major disease affecting tea plants. This study aimed to isolate and evaluate the efficacy of endophytic bacterial strains as potential biocontrol agents against the disease. Thirteen endophytic bacterial strains were isolated from healthy tea plants collected in Thach That, Hanoi, Vietnam. Six of these strains exhibited antagonistic effects against E. vexans, with strains R8 and S2 showing the highest inhibition. Heat-treated bacterial supernatants lost their antifungal activity, indicating that the inhibitory compounds were protein-based. Strain R8, identified as Bacillus subtilis, also demonstrated plant growth-promoting traits, including the production of Indole-3-acetic acid (IAA) and phosphate solubilization. Greenhouse trials showed that both chemical fungicides and antagonistic bacteria significantly reduced disease incidence, with the preventative application of chemical fungicide being the most effective (control efficacy of about 91.05%), followed by preventative inoculation with antagonistic bacteria (82.77%). Additionally, treated plots yielded significantly more fresh tea shoots, with an increase of 19.02% and 21.17% for antagonistic bacteria and chemical fungicide treatments, respectively, compared to the control. These findings suggest that B. subtilis R8 holds promise as a biocontrol agent, providing both disease suppression and yield enhancement in tea cultivation.
[学术文献 ] A Novel Strain Burkholderia theae GS2Y Exhibits Strong Biocontrol Potential Against Fungal Diseases in Tea Plants (Camellia sinensis) 进入全文
Cells 期刊
Background: Tea plants (Camellia sinensis) are widely cultivated cash crops. However, fungal diseases lead to significant reductions in both the yield and quality of tea. Therefore, searching for economical, eco-friendly, and efficient biological control measures is crucial for protecting tea plants from pathogenic fungi. Methods: The confrontation assays were performed to identify the antagonistic bacteria against tea pathogenic fungi and evaluate the antifungal activity of these bacteria. Results: Here, three tea pathogenic fungi were identified: Colletotrichum siamense HT-1, Diaporthe phaseolorum HT-3, and Fusarium fujikuroi HT-4. Notably, D. phaseolorum was the first to be reported in tea plants in China. Some tea pathogenic fungi showed a high relative abundance, suggesting a potential disease risk in tea plantations. Strain GS2Y, isolated from tea rhizosphere soil, exhibited strong antifungal activity against tea pathogenic fungi and represented a novel species within the genus Burkholderia, designated as Burkholderia theae. GS2Y could directly inhibit tea pathogenic fungi by disrupting the cellular structures and protect tea plants from fungal diseases caused by C. siamense HT-1 and D. phaseolorum HT-3. Conclusions: B. theae GS2Y might function as a potentially valuable resource for biocontrol agents, laying the foundation for the development of strategies to manage fungal diseases in tea plants.
[学术文献 ] Effect of tea green leafhopper (Empoasca onukii Matsuda) sucking on the quality of Oriental Beauty 进入全文
Food Frontiers 期刊
This study aimed to investigate the effects of tea green leafhopper damage on the sensory quality and metabolite composition of Oriental Beauty by using tea leaves from different varieties of tea plants and processing factories. The results indicated that tea green leafhopper damage could reduce bitterness and increase the level of fruity aroma, which was related to the content changes of catechin components and alcohol substances. Furthermore, the tea green leafhopper salivary treatment experiment revealed that the decrease of catechin content and increase of theaflavin content were mainly influenced by the action of saliva and mechanical injury, and changes in volatile components such as linalool oxidation were responsible for the alteration in aroma. These findings provide a theoretical reference for the aroma formation and quality improvement of Oriental Beauty.
[学术文献 ] Exploring tea (Camellia sinensis) microbiome: Insights into the functional characteristics and their impact on tea growth promotion 进入全文
Microbiological Research 期刊
Tea (Camellia sinensis) is perhaps the most popular and economic beverage in the globe due to its distinctive fragrance and flavour generated by the leaves of commercially farmed tea plants. The tea microbiome has now become a prominent topic of attention for microbiologists in recent years as it can help the plant for soil nutrient acquisition as well as stress management. Tea roots are well known to be colonized by Arbuscular Mycorrhizal Fungi (AMF) and many other beneficial microorganisms that boost the growth of the tea which increases leaf amino acids, protein, caffeine, and polyphenols content. One of the primary goals of rhizosphere microbial biology is to aid in the establishment of agricultural systems that provide high quantities of the food supply while minimizing environmental effects and anthropogenic activities. The present review is aimed to highlight the importance of microbes (along with their phylogeny) derived from cultivated and natural tea rhizospheres to understand the role of AMF and rhizospheric bacterial population to improve plant growth, enhancement of tea quality, and protecting tea plants from pathogens. This review also summarizes recent advances in our understanding of the diversity and profile of tea-associated bacteria. The utilization of the tea microbiome as a “natural resource” could provide holistic development in tea cultivation to ensure sustainability, highlighting knowledge gaps and future microbiome research.
[会议论文 ] Detecting Insect Infestation with Poly3-hexylthiophene Thin Film Sensor 进入全文
Proceedings of SPIE
The financial losses and destruction of crops due to insect infestation in the United States are estimated by the USDA to exceed 20 billion dollars annually. Much of these losses could be avoided by having a sensor that could effectively identify the early stages of insect infestation. However, traditional detection methods are time consuming, require trained personnel, and are not sufficient for early detection. Several previous research studies showed that emitting organic volatile compounds is a defensive mechanism activated by some plant species after being attacked by herbivores and parasites. Corn, cotton, pine, Brussels sprouts when attacked by Beet army worm, spider mites, bark beetles and caterpillars respectively, emits different blends of plant volatiles including γ-terpinene, α-pinene, p-cymene, farnesene, limonene and cis-hexenyl acetate, with a concentration of about 50 ppm. Therefore, monitoring for these volatile compounds may enable on-site early detection of insect infestations. In this study, a chemical resistor sensor to detect plant volatiles was designed and fabricated. The sensor platform consists of micro electronically fabricated interdigitated electrodes. On to this platform, a poly3-hexylthiophene (P3HT) thin film was deposited, using a spin coater at 8000 rpm for 30 seconds. The sensor was tested and found to be sensitive to a variety of plant volatiles, including γ-terpinene, α-pinene, p-cymene, farnesene, limonene and cis-hexenyl acetate at room temperature. These vapors interacted with the P3HT film causing an increase in the resistance of the sensor by more than one order of magnitude.
