Brassinosteroid-related transcription factor BIL1/BZR1 increases plant resistance to insect feeding
| Autor: | Masaaki Sakuta, Ayumi Yamagami, Hiroyuki Osada, Tadao Asami, Takeshi Nakano, Nao Kume, Tomoko Miyaji, Yutaka Arimoto |
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| Rok vydání: | 2014 |
| Předmět: |
Lotus japonicus
Mutant Arabidopsis Genetically modified crops Applied Microbiology and Biotechnology Biochemistry Analytical Chemistry chemistry.chemical_compound Transformation Genetic Brassinosteroids Botany Animals Brassinosteroid Herbivory Jasmonate Molecular Biology Gene Transcription factor biology Arabidopsis Proteins Thysanoptera fungi Organic Chemistry Nuclear Proteins General Medicine Plants Genetically Modified biology.organism_classification Cell biology DNA-Binding Proteins Plant Leaves Phenotype chemistry Mutation Lotus Signal Transduction Transcription Factors Biotechnology |
| Zdroj: | Bioscience, Biotechnology, and Biochemistry. 78:960-968 |
| ISSN: | 1347-6947 0916-8451 |
| DOI: | 10.1080/09168451.2014.910093 |
| Popis: | The plant steroid hormones brassinosteroids (BRs) play important roles in plant growth and responses to stresses. The up-regulation of pathogen resistance by BR signaling has been analyzed, but the relationship between BR and insect herbivores remains largely unclear. BIL1/BZR1 is a BR master transcription factor known to be involved in the regulation of plant development through work conducted on a gain of function mutation. Here, we analyzed the function of BIL1/BZR1 in response to insect feeding and demonstrated that resistance against thrip feeding was increased in the bil1-1D/bzr1-1D mutant compared to wild-type. We generated Lotus japonicus transgenic plants that over-express the Arabidopsis bil1/bzr1 mutant, Lj-bil1/bzr1-OX. The Lj-bil1/bzr1-OX plants showed increased resistance to thrip feeding. The expression levels of the jasmoninc acid (JA)-inducible VSP genes were increased in both Arabidopsis bil1-1D/bzr1-1D mutants and L. japonicus Lj-bil1/bzr1-OX plants. The resistance to thrip feeding caused by the BIL1/BZR1 gene may involve JA signaling. |
| Databáze: | OpenAIRE |
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