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119. Different viral effectors hijack TCP17, a key transcription factor for host Auxin synthesis, to promote viral infection.

Author

Zhao, Yanxiao, He, Yong, Chen, Xinyue, Li, Ninghong, Yang, Tongqing, Hu, Tingting, Duan, Shujing, Luo, Xuanjie, Jiang, Lei, Chen, Xiaoyang, Tao, Xiaorong, and Chen, Jing

Subjects
TOMATO spotted wilt virus disease, PLANT defenses, TRANSCRIPTION factors, PLANT viruses, VIRAL proteins, AUXIN, PLANT hormones
Abstract

Auxin is an important class of plant hormones that play an important role in plant growth development, biotic stress response, and viruses often suppress host plant auxin levels to promote infection. However, previous research on auxin-mediated disease resistance has focused mainly on signaling pathway, and the molecular mechanisms of how pathogenic proteins manipulate the biosynthetic pathway of auxin remain poorly understood. TCP is a class of plant-specific transcription factors, of which TCP17 is a member that binds to the promoter of YUCCAs, a key rate-limiting enzyme for auxin synthesis, and promotes the expression of YUCCAs, which is involved in auxin synthesis in plants. In this study, we reported that Tomato spotted wilt virus (TSWV) infection suppressed the expression of YUCCAs through its interaction with TCP17. Further studies revealed that the NSs protein encoded by TSWV disrupts the dimerization of TCP17, thereby inhibit its transcriptional activation ability and reducing the auxin content in plants. Consequently, this interference inhibits the auxin response signal and promotes the TSWV infection. Transgenic plants overexpressing TCP17 exhibit resistance against TSWV infection, whereas plants knocking out TCP17 were more susceptible to TSWV infection. Additionally, proteins encoded by other RNA viruses (BSMV, RSV and TBSV) can also interact with TCP17 and interfere with its dimerization. Notably, overexpression of TCP17 enhanced resistance against BSMV. This suggests that TCP17 plays a crucial role in plant defense against different types of plant viruses that use viral proteins to target this key component of auxin synthesis and promote infection. Author summary: Tomato spotted wilt virus (TSWV) poses a significant threat to global agricultural production and is transmitted by thrips. This study discovered that TSWV can disrupt key factors in the plant auxin signaling pathway, thereby inhibiting the synthesis and signal transduction of auxin, and promoting viral invasion. Auxin is not only a crucial hormone for plant growth and development but also plays a vital role in the plant resistance pathways. TSWV infection leads to a decrease in auxin levels, affecting the plant defense mechanisms. Furthermore, the study found that other viruses, such as Barley stripe mosaic virus, can also use the same strategy to enhance their own infection, indicating that the inhibition of plant auxin synthesis and signal transduction pathways is a conserved process across different viral infections. This discovery provides new insights into the pathogenic mechanisms of plant viruses and the study of virus-host interaction and offers new ideas for the development of novel plant virus control strategies. [ABSTRACT FROM AUTHOR]

Published
2024
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120. The complete chloroplast genome of rhododendron williamsianum (ericaceae).

Author

Zhou, Daoyuan, Wang, Juan, Zhou, Fengjuan, Li, Zhongxiang, Qi, Yangyang, and Hu, Tingting

Subjects
GENETIC databases, ERICACEAE, RHODODENDRONS, FAMILY research, RIBOSOMAL RNA
Abstract

Rhododendron williamsianum Rehder & E. H. Wilson 1913, is a plant with important horticultural value. Here we report its chloroplast genome. The total length of the chloroplast genome was 205,424 bp, with a GC content of 35.8%. It consisted of a 107,968 bp large single copy, a 2606 bp small single copy, and a pair of 47,425 bp inverted repeats separating them. Within the chloroplast genome, there were a total of 110 unique genes, which included 76 protein-coding genes, 4 rRNA genes, and 30 tRNA genes. Our phylogenetic analyses indicated that R. williamsianum was closely genetically related to R. sutchuenense and R. jingangshanicum. The findings from this study not only contribute to the genetic database of Rhododendron plants but also have implications for evolutionary research within the family Ericaceae. [ABSTRACT FROM AUTHOR]

Published
2024
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122. Ranking Spatiotemporal RDF Properties Using Machine-Learning

Author

Hu, Tingting, Zhu, Lin, Bai, Luyi, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Meng, Hongying, editor, Lei, Tao, editor, Li, Maozhen, editor, Li, Kenli, editor, Xiong, Ning, editor, and Wang, Lipo, editor

Published
2021
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137. Synergistic Interaction between Metal Single‐Atoms and Defective WO3−x Nanosheets for Enhanced Sonodynamic Cancer Therapy

Author

Zhou, Zhan, primary, Wang, Tao, additional, Hu, Tingting, additional, Xu, Hao, additional, Cui, Lin, additional, Xue, Baoli, additional, Zhao, Xinshuo, additional, Pan, Xiangrong, additional, Yu, Shilong, additional, Li, Hai, additional, Qin, Yong, additional, Zhang, Jiankang, additional, Ma, Lufang, additional, Liang, Ruizheng, additional, and Tan, Chaoliang, additional

Published
2024
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