OsMAPKKK63 is involved in salt stress response and seed dormancy control

被引：42

作者：

Na, Yeon-ju ^{[1
,2
]}

Choi, Hye-kyung ^{[1
,2
]}

Park, Min Young ^{[1
,2
]}

Choi, Seo-wha ^{[1
,2
]}

Vo, Kieu Thi Xuan ^{[3
,4
]}

Jeon, Jong-Seong ^{[3
,4
]}

Kim, Soo Young ^{[1
,2
]}

机构：

[1] Chonnam Natl Univ, Coll Agr & Life Sci, Dept Biotechnol, Gwangju 61186, South Korea

[2] Chonnam Natl Univ, Coll Agr & Life Sci, Kumho Life Sci Lab, Gwangju 61186, South Korea

[3] Kyung Hee Univ, Grad Sch Biotechnol, Yongin, South Korea

[4] Kyung Hee Univ, Crop Biotech Inst, Yongin, South Korea

来源：

PLANT SIGNALING & BEHAVIOR | 2019年 / 14卷 / 03期

关键词：

Rice; MAP kinase kinase kinase (MAPKKK); abiotic stress; vivipary; abscisic acid (ABA); KINASE GENE FAMILY; RAF-LIKE MAPKKK; PROTEIN; TOLERANCE; GENOMICS; RNA;

D O I：

10.1080/15592324.2019.1578633

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：

Approximately 75 MAP kinase kinase kinases (MAPKKKs) have been identified in the rice genome. However, only a few of them have been functionally characterized. In this paper, we report the function of a rice MAPKKK, OsMAPKKK63. OsMAPKKK63 was found to be induced by several abiotic stresses, including high salinity, chilling and drought. Our data indicate that OsMAPKKK63 possesses in vitro kinase activity and that it interacts with rice MAP kinase kinase OsMKK1 and OsMKK6. The two rice MKKs are known mediator of the salt stress response, implying that OsMAPKKK63 may be involved in the high salinity response. Our analysis of an OsMAPKKK63 knockout mutant indeed demonstrated that it is necessary for normal response to high salt. On the other hand, OsMAPKKK63 OX lines exhibited viviparous phenotype in both rice and Arabidopsis. The result suggests that OsMAPKKK63 may also be involved in seed dormancy control.

引用

页数：6

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