Chloroplast envelope localization of EDS5, an essential factor for salicylic acid biosynthesis in Arabidopsis thaliana

被引：53
|
作者：
Yamasaki, Kanako [1 ]
Motomura, Yukiya [1 ]
Yagi, Yusuke [2 ]
Nomura, Hironari [3 ]
Kikuchi, Shingo [4 ]
Nakai, Masato [4 ]
Shiina, Takashi [1 ]
机构：
[1] Kyoto Prefectural Univ, Grad Sch Life & Environm Sci, Kyoto, Japan
[2] Kyushu Univ, Fac Agr, Fukuoka, Japan
[3] Kobe Univ, Org Adv Sci & Technol, Kobe, Hyogo, Japan
[4] Osaka Univ, Inst Prot Res, Osaka, Japan
来源：
PLANT SIGNALING & BEHAVIOR | 2013年 / 8卷 / 04期
基金：
日本科学技术振兴机构;
关键词：
salicylic acid; chloroplast; chloroplast envelope; mate transporter; EDS5; epidermis;
D O I：
10.4161/psb.23603
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Chloroplasts are responsible for biosynthesis of salicylic acid (SA) an important signal molecule in plant immunity. EDS5 is a homolog of the MATE (multidrug and toxic compound extrusion) family of transporters, and is essential for SA biosynthesis. It has been speculated that EDS5 would be involved in the export of SA from chloroplasts. However, the subcellular localization of EDS5 remains largely uncharacterized. We demonstrate here that EDS5 is specifically localized to the chloroplast envelope membrane in Arabidopsis. In addition, we found that EDS5 is preferentially expressed in epidermal cells. These findings suggest that EDS5 is responsible for transport of SA from chloroplasts to the cytoplasm in epidermal cells.
引用
收藏
页码：e236031 / e236035
页数：5
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