https://scholars.lib.ntu.edu.tw/handle/123456789/629971
標題: | Whole Genome Sequencing and Tn5-Insertion Mutagenesis of Pseudomonas taiwanensis CMS to Probe Its Antagonistic Activity Against Rice Bacterial Blight Disease | 作者: | Chen, Wen-Jen Kuo, Tzu-Yen Chen, Chun-Yi Hsieh, Feng-Chia Yang, Yu-Liang JE-RUEI LIU Shih, Ming-Che |
關鍵字: | Pseudomonas taiwanensis; Rice bacterial blight; Xanthomonas oryzae pv.oryzae (Xoo); biocontrol agent | 公開日期: | 16-十一月-2020 | 出版社: | MDPI | 卷: | 21 | 期: | 22 | 來源出版物: | International journal of molecular sciences | 摘要: | The Gram-negative bacterium Pseudomonas taiwanensis is a novel bacterium that uses shrimp shell waste as its sole sources of carbon and nitrogen. It is a versatile bacterium with potential for use in biological control, with activities including toxicity toward insects, fungi, and the rice pathogen Xanthomonas oryzae pv.oryzae (Xoo). In this study, the complete 5.08-Mb genome sequence of P. taiwanensis CMS was determined by a combination of NGS/Sanger sequencing and optical mapping. Comparison of optical maps of seven Pseudomonas species showed that P. taiwanensis is most closely related to P. putida KT 2400. We screened a total of 11,646 individual Tn5-transponson tagged strains to identify genes that are involved in the production and regulation of the iron-chelator pyoverdine in P. taiwanensis, which is a key anti-Xoo factor. Our results indicated that the two-component system (TCS) EnvZ/OmpR plays a positive regulatory role in the production of pyoverdine, whereas the sigma factor RpoS functions as a repressor. The knowledge of the molecular basis of the regulation of pyoverdine by P. taiwanensis provided herein will be useful for its development for use in biological control, including as an anti-Xoo agent. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/629971 | ISSN: | 16616596 | DOI: | 10.3390/ijms21228639 |
顯示於: | 生物科技研究所 |
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