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한국식물학회 / v.53, no.5, 2010년, pp.374-380 
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( F-box Protein Arabidillo-1 Promotes Lateral Root Development by Depressing the Functioning of $GA_3$ in Arabidopsis ) |
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| 초 록 |
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| In Arabidopsis, Arabidillo-1 and Arabidillo-2 have great sequence homology to Dictyostelium and metazoan $eta$-catenin/Armadillo, which are important to animal and Dictyostelium development. Arabidillo-1 and Arabidillo-2 promote lateral root formation redundantly in Arabidopsis. Here, we showed that gibberellins ($GA_3$) has a greater inhibitory effect on lateral root growth from the mutant arabidillo-1 than from the wild type, suggesting that the mechanism for Arabidillo-1-regulated modulation of lateral root proliferation is associated with $GA_3$-metabolic or signaling pathways. Our yeast two-hybrid analysis demonstrated that Arabidillo-1 interacts with ASK2 and ASK11, and that ASK2 can bind with the F-box domain of Arabidillo-1. Therefore, Arabidillo-1 is involved in the ubiquitin/26S proteasome-mediated proteolytic pathway. Based on these results, we conclude that Arabidillo-1 can degrade some positive regulator of the $GA_3$ signaling pathway through selective protein degradation of ubiquitin/26S. Moreover, that process is believed to be the mechanism for Arabidillo-1 promotion of lateral root development in Arabidopsis. |
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| 키워드 |
| Arabidillo-1;Armadillo;F-box;GA;Lateral roots; |
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Journal of Plant Biology / v.53, no.5, 2010년, pp.374-380
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201020733094556)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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