Modulation of Arabidopsis and monocot root architecture by CLAVATA3/EMBRYO SURROUNDING REGION 26 peptide

被引:58
作者
Czyzewicz, Nathan [1 ]
Shi, Chun-Lin [2 ]
Vu, Lam Dai [3 ,4 ,5 ,6 ]
Van De Cotte, Brigitte [3 ,4 ]
Hodgman, Charlie [7 ]
Butenko, Melinka A. [2 ]
De Smet, Ive [1 ,3 ,4 ,7 ]
机构
[1] Univ Nottingham, Sch Biosci, Div Plant & Crop Sci, Loughborough LE12 5RD, Leics, England
[2] Univ Oslo, Sect Genet & Evolutionary Biol, Dept Biosci, N-0316 Oslo, Norway
[3] VIB, Dept Plant Syst Biol, B-9052 Ghent, Belgium
[4] Univ Ghent, Dept Plant Biotechnol & Genet, B-9052 Ghent, Belgium
[5] VIB, Dept Med Prot Res, B-9000 Ghent, Belgium
[6] Univ Ghent, Dept Biochem, B-9000 Ghent, Belgium
[7] Univ Nottingham, Sch Biosci, Ctr Plant Integrat Biol, Loughborough LE12 5RD, Leics, England
基金
英国生物技术与生命科学研究理事会;
关键词
Arabidopsis thaliana; auxin; Brachypodium distachyon; CLE26; root; wheat; OF-FUNCTION PHENOTYPES; STEM-CELL FATE; CLE PEPTIDES; PROTOPHLOEM DIFFERENTIATION; FUNCTIONAL DISSECTION; MERISTEM; GENES; AUXIN; GROWTH; EXPRESSION;
D O I
10.1093/jxb/erv360
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Plant roots are important for a wide range of processes, including nutrient and water uptake, anchoring and mechanical support, storage functions, and as the major interface with the soil environment. Several small signalling peptides and receptor kinases have been shown to affect primary root growth, but very little is known about their role in lateral root development. In this context, the CLE family, a group of small signalling peptides that has been shown to affect a wide range of developmental processes, were the focus of this study. Here, the expression pattern during lateral root initiation for several CLE family members is explored and to what extent CLE1, CLE4, CLE7, CLE26, and CLE27, which show specific expression patterns in the root, are involved in regulating root architecture in Arabidopsis thaliana is assessed. Using chemically synthesized peptide variants, it was found that CLE26 plays an important role in regulating A. thaliana root architecture and interacts with auxin signalling. In addition, through alanine scanning and in silico structural modelling, key residues in the CLE26 peptide sequence that affect its activity are pinpointed. Finally, some interesting similarities and differences regarding the role of CLE26 in regulating monocot root architecture are presented.
引用
收藏
页码:5229 / 5243
页数:15
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