scholarly journals The Arabidopsis homeobox gene SHOOT MERISTEMLESS has cellular and meristem-organisational roles with differential requirements for cytokinin and CYCD3 activity

2013 ◽  
Vol 75 (1) ◽  
pp. 53-66 ◽  
Author(s):  
Simon Scofield ◽  
Walter Dewitte ◽  
Jeroen Nieuwland ◽  
James A.H. Murray
Keyword(s):  
Homeobox Gene ◽  
Shoot Meristemless

scholarly journals KNOX HOMOLOGS SHOOT MERISTEMLESS (STM) and KNAT6 are epistatic to CLAVATA3 (CLV3) during embryonic meristem development in Arabidopsis thaliana

2020 ◽  
Author(s):  
Sharma Nidhi ◽  
Liu Tie
Keyword(s):  
Arabidopsis Thaliana ◽  
Shoot Apex ◽  
Double Mutant ◽  
Genetic Interaction ◽  
Homeobox Gene ◽  
The Other ◽  
Shoot Meristem ◽  
Published Data ◽  
Meristem Development ◽  
Shoot Meristemless

AbstractIn Arabidopsis, the genes SHOOT MERISTEMLESS (STM) and CLAVATA3 (CLV3) antagonistically regulate shoot meristem development. STM is essential for both development and maintenance of the meristem, as stm mutants fail to develop a shoot meristem during embryogenesis. CLV3, on the other hand, negatively regulates meristem proliferation, and clv3 mutants possess an enlarged shoot meristem. Genetic interaction studies revealed that stm and clv3 dominantly suppress each other’s phenotypes. STM works in conjunction with its closely related homologue KNOTTED1-LIKE HOMEOBOX GENE 6 (KNAT6) to promote meristem development and organ separation, as stm knat6 double mutants fail to form a meristem and produce a fused cotyledon. In this study, we show that clv3 fails to promote post-embryonic meristem formation in stm-1 background if we also remove KNAT6. stm-1 knat6 clv3 triple mutants result in early meristem termination and produce fused cotyledons similar to stm knat6 double mutant. Notably, the stm-1 knat6 and stm-1 knat6 clv3 alleles lack tissue in the presumed region of SAM. stm knat6 clv3 also showed reduced inflorescence size and shoot apex size as compared to clv3 single or stm clv3 double mutants. In contrast to previously published data, these data suggest that stm is epistatic to clv3 in postembryonic meristem development.HighlightSTM and KNAT6 genes determine post-embryonic meristem formation and activity in Arabidopsis. clv3 mutation is unable to rescue the stm knat6 meristemless phenotype.

Aberrant Homeobox Gene Expression in Mammary Tumorigenesis

2000 ◽  
Author(s):  
Lorraine J. Gudas
Keyword(s):  
Gene Expression ◽  
Mammary Tumorigenesis ◽  
Homeobox Gene

Inhibition of Breast Cancer-Induced Angiogenesis by a Diverged Homeobox Gene

2005 ◽  
Author(s):  
David H. Gorski
Keyword(s):  
Breast Cancer ◽  
Homeobox Gene

6 A novel homeobox gene Atx may specify the midbrain and pretectum.

2001 ◽  
Vol 199 (1-2) ◽  
pp. 218-219
Author(s):  
R. N. GOGOL ◽  
F. SCHUBERT ◽  
A. SIMEONE ◽  
A. LUMSDEN
Keyword(s):  
Homeobox Gene
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