AINTEGUMENTA promotes petal identity and acts as a negative regulator of AGAMOUS

被引：95

作者：

Krizek, BA ^{[1
]}

Prost, V ^{[1
]}

Macias, A ^{[1
]}

机构：

[1] Univ S Carolina, Dept Biol Sci, Columbia, SC 29208 USA

来源：

PLANT CELL | 2000年 / 12卷 / 08期

关键词：

D O I：

10.1105/tpc.12.8.1357

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：

The Arabidopsis AINTEGUMENTA (ANT) gene has been shown previously to be involved in ovule development and in the initiation and growth of floral organs. Here, we show that ANT acts in additional processes during flower development, including repression of AGAMOUS (AG) in second whorl cells, promotion of petal epidermal cell identity, and gynoecium development. Analyses of ap2-1 ant-6 double mutants reveal that ANT acts redundantly with AP2 to repress AG in second whorl cells. The abaxial surface of ant petals contains features such as stomata and elongated, interdigitated cells that are not present on wild-type petals. The loss of petal identity in these second whorl cells does not result from ectopic AG expression, suggesting that ANT acts in a pathway promoting petal cell identity that is independent of its role in repression of AG. These data suggest that ANT may function as a class A gene.

引用

页码：1357 / 1366

页数：10

共 30 条

[1]

Baker SC, 1997, GENETICS, V145, P1109

[2] Redundant enhancers mediate transcriptional repression of AGAMOUS by APETALA2 [J].

Bomblies, K ;

Dagenais, N ;

Weigel, D .

DEVELOPMENTAL BIOLOGY, 1999, 216 (01) :260-264

[3]

BOWMAN JL, 1991, DEVELOPMENT, V112, P1

[4]

BOWMAN JL, 1993, DEVELOPMENT, V119, P721

[5] GENES DIRECTING FLOWER DEVELOPMENT IN ARABIDOPSIS [J].

BOWMAN, JL ;

SMYTH, DR ;

MEYEROWITZ, EM .

PLANT CELL, 1989, 1 (01) :37-52

[6] Activation of a floral homeotic gene in Arabidopsis [J].

Busch, MA ;

Bomblies, K ;

Weigel, D .

SCIENCE, 1999, 285 (5427) :585-587

[7] Arabidopsis STERILE APETALA, a multifunctional gene regulating inflorescence, flower, and ovule development [J].

Byzova, MV ;

Franken, J ;

Aarts, MGM ;

de Almeida-Engler, J ;

Engler, G ;

Mariani, C ;

Campagne, MMV ;

Angenent, GC .

GENES & DEVELOPMENT, 1999, 13 (08) :1002-1014

[8] THE WAR OF THE WHORLS - GENETIC INTERACTIONS CONTROLLING FLOWER DEVELOPMENT [J].

COEN, ES ;

MEYEROWITZ, EM .

NATURE, 1991, 353 (6339) :31-37

[9] NEGATIVE REGULATION OF THE ARABIDOPSIS HOMEOTIC GENE AGAMOUS BY THE APETALA2 PRODUCT [J].

DREWS, GN ;

BOWMAN, JL ;

MEYEROWITZ, EM .

CELL, 1991, 65 (06) :991-1002

[10] AINTEGUMENTA, an APETALA2-like gene of arabidopsis with pleiotropic roles in ovule development and floral organ growth [J].

Elliott, RC ;

Betzner, AS ;

Huttner, E ;

Oakes, MP ;

Tucker, WQJ ;

Gerentes, D ;

Perez, P ;

Smyth, DR .

PLANT CELL, 1996, 8 (02) :155-168

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