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한국식물학회 / v.52, no.2, 2009년, pp.79-87 
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( Role of an Arabidopsis Rab GTPase RabG3b in Pathogen Response and Leaf Senescence ) |
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| 초 록 |
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| In our previous proteomic analysis, we isolated a small GTPase RabG3b as a salicylic acid-responsive protein in Arabidopsis (Oh et al. in Plant Cell 17:2832-2847, 2005). Here, we constructed transgenic plants over-expressing wild-type (RabG3bOX), constitutively active (RabG3bCA), and dominant negative (RabG3bDN) forms of RabG3b for functional studies. The phenotypes of these transgenic plants were indistinguishable from wild-type plants under normal growth conditions. However, both RabG3bOX and RabG3bCA plants displayed unrestricted hypersensitive programmed cell death against a fungal toxin Fumonisin B1 and a fungal pathogen Alternaria brassicicola, whereas no major difference between wild-type and RabG3bDN plants was observed. In addition, RabG3bOX and RabG3bCA plants underwent accelerated leaf senescence compared to wild-type and RabG3bDN plants. These results suggest that RabG3b is a modulator for cell death progression during pathogen response and senescence process in plants. |
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| 키워드 |
| Rab GTPase;Programmed cell death;Hypersensitive response;Leaf senescence;Fumonisin B1;Alternaria brassicicola; |
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Journal of Plant Biology / v.52, no.2, 2009년, pp.79-87
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200917639073468)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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