Extracellular expression of protein elicitor PeaT1 in Bacillus subtilis to enhance drought tolerance and growth in wheat.
- Author:
Limei WANG
1
;
Xiufen YANG
;
Hongmei ZENG
;
Dewen QIU
;
Lihua GUO
;
Zheng LIU
Author Information
1. Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
- Publication Type:Journal Article
- MeSH:
Adaptation, Physiological;
drug effects;
Alternaria;
chemistry;
genetics;
Bacillus subtilis;
genetics;
metabolism;
Droughts;
Fungal Proteins;
biosynthesis;
genetics;
Genetic Vectors;
genetics;
Recombinant Proteins;
biosynthesis;
genetics;
Triticum;
growth & development
- From:
Chinese Journal of Biotechnology
2011;27(9):1355-1362
- CountryChina
- Language:Chinese
-
Abstract:
PeaT1, a protein elicitor from Alternaria tenuissima can promote plant growth and trigger systemic acquired resistance in plants. In order to expand the application of PeaT1, P43 promoter sequence and nprB signal peptide-encoding sequence were cloned from Bacillus subtilis 168 chromosomal DNA. The two sequences and peaT1 gene were spliced by overlapping extension. This product was cloned into the Escherichia coli-B. subtilis shuttle vector pHY300-PLK and the resultant recombinant expression vector (pHY43N- peaTI) plasmid was transformed into B. subtilis WB800. SDS-PAGE and Western blotting analysis showed that protein elicitor PeaT1 was expressed extracellularly in B. subtilis. This recombinant bacterial strain enhanced drought tolerance and promoted seedling growth in wheat.
