A new pathogenesis-related protein,LrPR4, from <Emphasis Type="Italic">Lycoris radiata</Emphasis>, and its antifungal activity against <Emphasis Type="Italic">Magnaporthe grisea</Emphasis> |
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| Authors: | Xiaodan Li Bing Xia Yumei Jiang Qingsong Wu Chunyan Wang Lisi He Feng Peng Ren Wang |
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| Institution: | (1) Qian Hu Hou Cun 1#, Jiangsu Province Key Laboratory for Plant Ex-Situ Conservation, Institute of Botany, Jiangsu Province & Chinese Academy of Sciences, 210014 Nanjing, People’s Republic of China;(2) South Subtropical Crops Research Institute (SSCRI), Chinese Academy of Tropical Agricultural Sciences (CATAS), 524091 Zhanjiang, China;(3) College of Horticulture, Nanjing Agricultural University, 210095 Nanjing, People’s Republic of China; |
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| Abstract: | A new Lycoris radiata pathogenesis-related (PR)-4 gene, LrPR4 was isolated. LrPR4 encodes a 142 amino acid protein with a predicted molecular mass of 15.43 kDa and pI of 7.56. The putative LrPR4 shows high
similarity to PR4 type proteins from various plant species and belongs to the Barwin family. Like other PR4s from monocot
plants, LrPR4 protein contains a conserved Barwin domain and has a signal peptide at its N-terminus. The recombinant LrPR4
protein expressed in Escherichia coli showed activity towards hydrolysing RNA from L. radiata bulbs and antifungal activity. The results of this study suggest that LrPR4 may play a role in the disease resistance responses
of plant against pathogen attacks though its antifungal activity. |
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