| Title: | Identification of a Heat-Inducible Element of Cysteine Desulfurase Gene Promoter in Lentinula edodes |
| Author(s): | Huang Z; Lei X; Feng X; Gao S; Wang G; Bian Y; Huang W; Liu Y; |
| Address: | "College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. HuangZhiCheng1210@163.com. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. xiaoyulei1988@126.com. Department of Nutrition, Food Science and Packaging, California State University, San Jose, CA 95192, USA. xi.feng@sjsu.edu. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. 13720161459@163.com. Institute of Applied Mycology, Plant Science and Technology College, Huazhong Agricultural University, Wuhan 430070, China. wgzhau@163.com. Institute of Applied Mycology, Plant Science and Technology College, Huazhong Agricultural University, Wuhan 430070, China. bianyinbing@mail.hzau.edu.cn. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. huangwen@mail.hzau.edu.cn. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. yingliu@mail.hzau.edu.cn" |
| DOI: | 10.3390/molecules24122223 |
| ISSN/ISBN: | 1420-3049 (Electronic) 1420-3049 (Linking) |
| Abstract: | "Volatile organosulfur compounds are the main components that contribute to the unique aroma of dried Lentinula edodes. They are mainly generated during the hot-air drying process, and cysteine desulfurase is the key enzyme in this process. Temperature may be an essential factor of volatile organosulfur compound production by influencing the expression of the cysteine desulfurase gene. In this study, the promoter sequence of the cysteine desulfurase gene (pCS) was cloned and analyzed using bioinformatics tools. A series of 5'deletion fragments and site-directed mutations of pCS were constructed to identify the element that responds to heat stress. Six heat shock transcription factor (HSTF) binding sites were predicted by SCPD (The Promoter Database of Saccharomyces cerevisiae) and three of the binding sites were predicted by Yeastract (Yeast Search for Transcriptional Regulators and Consensus Tracking) in pCS. The results indicated that pCS was able to drive the expression of the EGFP (Enhanced Green Fluorescent Protein) gene in L. edodes. Moreover, the fluorescence intensity increased after heat stress. The changes in fluorescence intensity of different 5'deletion fragments showed that the heat response region was located between -500 bp and -400 bp in pCS. The site-directed mutation analysis further showed that the heat-inducible element was between -490 bp and -500 bp (TTTCTAGAAT) in pCS. Our results provide molecular insight for studying the formation of volatile organosulfur compounds in dried L. edodes" |
| Keywords: | "Carbon-Sulfur Lyases/chemistry/*genetics Green Fluorescent Proteins/genetics Heat-Shock Response/*genetics Hot Temperature Promoter Regions, Genetic/*genetics Shiitake Mushrooms/*chemistry/genetics Sulfur/chemistry Volatile Organic Compounds/metabolism Le;" |
| Notes: | "MedlineHuang, Zhicheng Lei, Xiaoyu Feng, Xi Gao, Shuangshuang Wang, Gangzheng Bian, Yinbing Huang, Wen Liu, Ying eng 31601434/Natural Science Foundation of China/ 2017ABA148/Major Projects of Technological Innovation of Hubei Province/ 2016T90701/China Postdoctoral Science Foundation/ Switzerland 2019/06/15 Molecules. 2019 Jun 14; 24(12):2223. doi: 10.3390/molecules24122223" |
