The role of Class ? KNOX family in controlling compound leaf patterning in Medicago truncatula

被引：4

作者：

Wang, Xiao ^{[1
]}

Zhang, Juanjuan ^{[1
]}

Chai, Maofeng ^{[2
]}

Han, Lu ^{[1
]}

Cao, Xiaohua ^{[1
]}

Zhang, Jing ^{[1
]}

Kong, Yiming ^{[3
]}

Fu, Chunxiang ^{[4
]}

Wang, Zeng-Yu ^{[2
]}

Mysore, Kirankumar S. ^{[5
]}

Wen, Jiangqi ^{[5
]}

Zhou, Chuanen ^{[1
]}

机构：

[1] Shandong Univ, Minist Educ, Sch Life Sci, Key Lab Plant Dev & Environm Adaptat Biol, Qingdao 266237, Peoples R China

[2] Qingdao Agr Univ, Coll Grassland Sci, Grassland Agrihusb Res Ctr, Qingdao 266109, Peoples R China

[3] Shandong Normal Univ, Coll Life Sci, Jinan 250014, Peoples R China

[4] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Qingdao 266101, Peoples R China

[5] Oklahoma State Univ, Inst Agr Biosci, Ardmore, OK 73401 USA

来源：

JOURNAL OF INTEGRATIVE PLANT BIOLOGY | 2023年 / 65卷 / 10期

基金：

中国国家自然科学基金;

关键词：

KNOTTED-like homeobox; KNOXM; NAM; cytokinin; compound leaf; CELL-WALL FORMATION; TRANSCRIPTION FACTORS; GENE-EXPRESSION; ARABIDOPSIS-THALIANA; CYTOKININ; TOMATO; BIOSYNTHESIS; ARCHITECTURE; GIBBERELLIN; REGULATORS;

D O I：

10.1111/jipb.13549

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：

Compound leaf development requires the coordination of genetic factors, hormones, and other signals. In this study, we explored the functions of Class II KNOTTED-like homeobox (KNOXII) genes in the model leguminous plant Medicago truncatula. Phenotypic and genetic analyses suggest that MtKNOX4, 5 are able to repress leaflet formation, while MtKNOX3, 9, 10 are not involved in this developmental process. Further investigations have shown that MtKNOX4 represses the CK signal transduction, which is downstream of MtKNOXI-mediated CK biosynthesis. Additionally, two boundary genes, FUSED COMPOUND LEAF1 (orthologue of Arabidopsis Class M KNOX) and NO APICAL MERISTEM (orthologue of Arabidopsis CUP-SHAPED COTYLEDON), are necessary for MtKNOX4-mediated compound leaf formation. These findings suggest, that among the members of MtKNOXII, MtKNOX4 plays a crucial role in integrating the CK pathway and boundary regulators, providing new insights into the roles of MtKNOXII in regulating the elaboration of compound leaves in M. truncatula.

引用

页码：2279 / 2291

页数：13