Expression of a repressor form of the Arabidopsis thaliana transcription factor TCP16 induces the formation of ectopic meristems

被引:12
|
作者
Uberti-Manassero, Nora G. [1 ]
Coscueta, Ezequiel R. [1 ]
Gonzalez, Daniel H. [1 ]
机构
[1] Univ Nacl Litoral, Fac Bioquim & Ciencias Biol, Catedra Biol Celular & Mol, Inst Agrobiotecnol Litoral,CONICET UNL, RA-3000 Santa Fe, Argentina
关键词
Arabidopsis thaliana; EAR domain; Ectopic meristem; Plant development; TCP domain; Transcription factor; SHOOT APICAL MERISTEM; HOMEOBOX GENES; DNA-BINDING; IDENTIFICATION; INTERFERENCE; POLARITY; FAMILY; GROWTH;
D O I
10.1016/j.plaphy.2016.06.031
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Plants that express a fusion of the Arabidopsis thaliana class I TCP transcription factor TCP16 to the EAR repressor domain develop several phenotypic alterations, including rounder leaves, short petioles and pedicels, and delayed elongation of sepals, petals and anthers. In addition, these plants develop lobed cotyledons and ectopic meristems. Ectopic meristems are formed on the adaxial side of cotyledon petioles and arise from a cleft that is formed at this site. Analysis of the expression of reporter genes indicated that meristem genes are reactivated at the site of emergence of ectopic meristems, located near the bifurcation of cotyledon veins. The plants also show increased transcript levels of the boundary specific CUP-SHAPED COTYLEDON (CUC) genes. The results suggest that TCP16 is able to modulate the induction of meristematic programs and the differentiation state of plant cells. (C) 2016 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码:57 / 62
页数:6
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