کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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2055897 | 1075786 | 2014 | 7 صفحه PDF | دانلود رایگان |
The Arabidopsis genome encodes various proteins with a Toll/interleukin-1 receptor (TIR) domain. Many of these proteins also contain nucleotide-binding site (NBS) and leucine-rich repeat (LRR) domains and function as resistance (R) proteins. However, the protein encoded by At2g32140 (a TIR-X gene) contains a TIR domain but lacks NBS and LRR domains. We found that transgenic plants overexpressing At2g32140 displayed a dwarf phenotype and showed increased expression of defense-related genes. In general, the growth defect caused by activation of defense responses is suppressed under high-temperature conditions. However, transgenic plants overexpressing At2g32140 displayed a much stronger dwarf phenotype at 28 °C than at 22 °C. This dwarf phenotype was suppressed under the combination with known salicylic-acid pathway mutants. These findings suggest that At2g32140 encodes a protein involved in the plant defense response.
Journal: Journal of Plant Physiology - Volume 171, Issue 6, 15 March 2014, Pages 382–388