| Literature DB >> 25036120 |
Tomoko Miyaji1, Ayumi Yamagami, Nao Kume, Masaaki Sakuta, Hiroyuki Osada, Tadao Asami, Yutaka Arimoto, Takeshi Nakano.
Abstract
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.Entities:
Keywords: BIL1/BZR1; brassinosteroid; jasmonate; onion thrips; signaling
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Year: 2014 PMID： 25036120 DOI： 10.1080/09168451.2014.910093
Source DB: PubMed Journal: Biosci Biotechnol Biochem ISSN： 0916-8451 Impact factor: 2.043