Search

Your search keyword '"Jiang, Jiafu"' showing total 821 results
Start Over Author "Jiang, Jiafu"
821 results on '"Jiang, Jiafu"'

13. Analyses of a chromosome-scale genome assembly reveal the origin and evolution of cultivated chrysanthemum

Author

Song, Aiping, Su, Jiangshuo, Wang, Haibin, Zhang, Zhongren, Zhang, Xingtan, Van de Peer, Yves, Chen, Fei, Fang, Weimin, Guan, Zhiyong, Zhang, Fei, Wang, Zhenxing, Wang, Likai, Ding, Baoqing, Zhao, Shuang, Ding, Lian, Liu, Ye, Zhou, Lijie, He, Jun, Jia, Diwen, Zhang, Jiali, Chen, Chuwen, Yu, Zhongyu, Sun, Daojin, Jiang, Jiafu, Chen, Sumei, and Chen, Fadi

Published
2023
Full Text
View/download PDF

23. Temporal and Spatial Distribution of SARS-CoV-2 Aerosols in a Large-Scale Fangcang Shelter Hospital in Shanghai, China

Author

Jiang, Jiafu, Yin, Zhe, Li, Jing, Jia, Leili, He, Rulin, Yang, Wenhui, Yang, Jihu, Fan, Hang, Zhang, Sen, Wang, Yunfei, Zhao, Zengming, Peng, Haoran, Li, Lizhong, Yang, Yi, Fan, Shi-Yong, Xiang, Rong, Guo, Jianshu, Wang, Jinjin, Wei, Juanning, Zhou, Fengling, Liu, Ding, Zhao, Ping, Cui, Yujun, Liu, Yunxi, Zhou, Dongsheng, and Dong, Gang

Published
2023
Full Text
View/download PDF

29. Heterografting enhances chrysanthemum resistance to Alternaria alternata via jasmonate-mediated increases in trichomes and terpenoids.

Author

Li, Wenjie, Zhan, Qingling, Guan, Yunxiao, Wang, Likai, Li, Song, Zheng, Shanhu, Ma, Hongyu, Liu, Ye, Ding, Lian, Zhao, Shuang, Wang, Zhenxing, Jiang, Jiafu, Fang, Weimin, Chen, Fadi, Chen, Sumei, and Guan, Zhiyong

Subjects
ALTERNARIA alternata, NATURAL immunity, PROTEOLYSIS, TRICHOMES, ARTEMISIA, CHRYSANTHEMUMS, JASMONATE
Abstract

Trichomes are specialized hair-like structures in the epidermal cells of the above-ground parts of plants and help to protect them from pests and pathogens, and produce valuable metabolites. Chrysanthemum morifolium , which is used in tea products, has both ornamental and medicinal value; however, it is susceptible to infection by the fungus Alternaria alternata , which can result in substantial economic losses. Increasing the density of glandular trichomes enhances disease resistance and improves the production of medicinal metabolites in chrysanthemums, and jasmonate (JA) is known to promote the formation of trichomes in various plants. However, it remains unclear whether glandular trichomes in chrysanthemums are regulated by JA. In addition, grafting, a technique that can improve plant resistance to biotic stresses, has been poorly examined for its impact on glandular trichomes, terpenoids, and disease resistance. In this study, we demonstrate that grafting with Artemisia vulgaris rootstocks improves the resistance of chrysanthemum scions to A. alternata. Heterografted chrysanthemums exhibited higher trichome density and terpenoid content compared to self-grafted counterparts. Transcriptome analysis highlighted the significant role of CmJAZ1-like in disease resistance in heterografted chrysanthemums. Lines overexpressing CmJAZ1-like exhibited sensitivity to A. alternata , and this was characterized by reduced glandular trichome density and limited terpenoid content. Conversely, CmJAZ1-like silenced lines exhibited resistance to A. alternata and showed increased glandular trichome density and terpenoid content. Higher JA content was found in the heterografted chrysanthemum scions compared to self-grafted ones. Furthermore, we established that JA promoted the development of glandular trichomes and the synthesis of terpenoids while also inducing the degradation of CmJAZ1-like proteins in chrysanthemums. Our findings suggest that higher JA increases trichome density and terpenoid content, thereby enhancing resistance to A. alternata by regulating CmJAZ1-like in heterografted chrysanthemums. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

38. Monitoring the Nitrogen Nutrition Index Using Leaf-Based Hyperspectral Reflectance in Cut Chrysanthemums.

Author

Wu, Yin, Lu, Jingshan, Liu, Huahao, Gou, Tingyu, Chen, Fadi, Fang, Weimin, Chen, Sumei, Zhao, Shuang, Jiang, Jiafu, and Guan, Zhiyong

Subjects
PARTIAL least squares regression, REMOTE sensing, LEAST squares, CHRYSANTHEMUMS, REFLECTANCE, BIOMASS
Abstract

Precise nitrogen supply is crucial for ensuring the quality of cut chrysanthemums (Chrysanthemum morifolium Ramat.). The nitrogen nutrition index (NNI) serves as an important indicator for diagnosing crop nitrogen (N) nutrition. Hyperspectral remote sensing (HRS) technology has been widely used in monitoring crop N status due to its rapid, accurate, and non-destructive capabilities. However, its application in estimating the NNI of cut chrysanthemums has received limited attention. Therefore, this study aimed to use HRS to accurately determine the cut chrysanthemum NNI, thereby providing valuable guidance for managing N fertilization. During several key growth stages, a hyperspectral spectroradiometer was used to capture hyperspectral reflectance data (350–2500 nm) from three leaf layers. Subsequently, cut chrysanthemum canopies were sampled for aboveground biomass (AGB) and plant nitrogen concentration (PNC). The collected AGB and PNC data were then utilized to fit the critical N (Nc) dilution curve of cut chrysanthemums using a Bayesian hierarchical model, enabling the calculation of the NNI. Finally, spectral indices and partial least squares regression (PLSR) were used to establish the NNI estimation model for cut chrysanthemums. The results showed that the Nc dilution curve of the cut chrysanthemums was Nc = 5.401 × AGB−0.468. The first leaf layer (L1) proved to be optimal for estimating cut chrysanthemum NNI. Additionally, a newly proposed two-band spectral index, DVI-L1 (R1105, R700), demonstrated moderate predictive capabilities for the NNI of cut chrysanthemums (R2 = 0.5309, RMSE = 0.3210). Compared with the spectral index-based NNI estimation model, PLSR-L1 showed the best performance in estimating the cut chrysanthemum NNI (R2 = 0.8177, RMSE = 0.2000). Our results highlight the rapid NNI prediction potential of HRS and its significance in facilitating precise N management in cut chrysanthemums. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

50. A pattern for the early, middle, and late phase of tea chrysanthemum response to Fusarium oxysporum.

Author

Li, Wenjie, Wang, Mengqi, Liu, Ye, Zhan, Qingling, Jing, Ruyue, Song, Aiping, Zhao, Shuang, Wang, Likai, Jiang, Jiafu, Chen, Sumei, Chen, Fadi, and Guan, Zhiyong

Subjects
CHRYSANTHEMUMS, FUSARIUM oxysporum, FUSARIOSIS, PLANT-pathogen relationships, WILT diseases, SALICYLIC acid, TEA plantations, TEA growing
Abstract

Chrysanthemum morifolium is cultivated worldwide and has high ornamental, tea, and medicinal value. With the increasing area of chrysanthemum cultivation and years of continuous cropping, Fusarium wilt disease frequently occurs in various production areas, seriously affecting the quality and yield and causing huge economic losses. However, the molecular response mechanism of Fusarium wilt infection remains unclear, which limits the molecular breeding process for disease resistance in chrysanthemums. In the present study, we analyzed the molecular response mechanisms of 'Huangju,' one of the tea chrysanthemum cultivars severely infested with Fusarium wilt in the field at the early, middle, and late phases of F. oxysporum infestation. 'Huangju' responded to the infestation mainly through galactose metabolism, plant‐pathogen interaction, auxin, abscisic acid, and ethylene signalling in the early phase; galactose metabolism, plant‐pathogen interaction, auxin, salicylic acid signal, and certain transcription factors (e.g., CmWRKY48) in the middle phase; and galactose metabolism in the late phase. Notably, the galactose metabolism was important in the early, middle, and late phases of 'Huangju' response to F. oxysporum. Meanwhile, the phytohormone auxin was involved in the early and middle responses. Furthermore, silencing of CmWRKY48 in 'Huangju' resulted in resistance to F. oxysporum. Our results revealed a new molecular pattern for chrysanthemum in response to Fusarium wilt in the early, middle, and late phases, providing a foundation for the molecular breeding of chrysanthemum for disease resistance. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results