Overexpression of Tomato SIZ2 in Arabidopsis Improves Plant Salinity Tolerance

被引：0

作者：

Wang, Qingzhu ^{[1
]}

Lei, Shikang ^{[1
]}

Qian, Jie ^{[1
]}

Zheng, Min ^{[1
]}

Hsu, Yi-Feng ^{[1
]}

机构：

[1] Southwest Univ, Chongqing Key Lab Plant Resource Conservat & Germ, Chongqing, Peoples R China

来源：

JOURNAL OF PLANT GROWTH REGULATION | 2023年 / 42卷 / 03期

关键词：

SlSIZ2; Solanum lycopersicum; SUMOylation; Salinity tolerance; SUMO E3 LIGASE; SUPERIOR REFERENCE GENES; TRANSCRIPT NORMALIZATION; SUMOYLATION; GROWTH; IDENTIFICATION; PROTEINS; COMPLEX; SLSIZ1;

D O I：

10.1007/s00344-022-10667-5

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Small ubiquitin-like modifier (SUMO) conjugation to target proteins is an important post-translational modification, which regulates plant tolerance to biotic and abiotic stresses. SIZ1, a well-characterized SUMO E3 ligase, facilitates the conjugation of SUMO to target proteins. Here, a SIZ/PAIS-type protein SlSIZ2 was identified in tomato (Solanum lycopersicum) that is a homolog of AtSIZ1 and SlSIZ1. SlSIZ2 was expressed in tomato vegetative and reproductive tissues, and induced by ABA and NaCl. Nucleus-localized SlSIZ2 partially rescued atsiz1-2 dwarfism and also alleviated the sensitivity of atsiz1-2 to ABA and NaCl, suggesting the functional replacement of SlSIZ2 to AtSIZ1. Moreover, SlSIZ2-overexpressing Arabidopsis has higher cotyledon expansion rate, lateral root density and survival rate under salinity stress. These results suggested the contribution of SlSIZ2 to the tolerance of salinity stress.

引用

页码：1893 / 1904

页数：12

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