scholarly journals HANABA TARANU Is a GATA Transcription Factor That Regulates Shoot Apical Meristem and Flower Development in Arabidopsis

2004 ◽  
Vol 16 (10) ◽  
pp. 2586-2600 ◽  
Author(s):  
Yuanxiang Zhao ◽  
Leonard Medrano ◽  
Kazuaki Ohashi ◽  
Jennifer C. Fletcher ◽  
Hao Yu ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Flower Development ◽  
Shoot Apical Meristem ◽  
Apical Meristem ◽  
Gata Transcription Factor

scholarly journals FAR-RED ELONGATED HYPOCOTYL3 activates SEPALLATA2 but inhibits CLAVATA3 to regulate meristem determinacy and maintenance in Arabidopsis

2016 ◽  
Vol 113 (33) ◽  
pp. 9375-9380 ◽  
Author(s):  
Dongming Li ◽  
Xing Fu ◽  
Lin Guo ◽  
Zhigang Huang ◽  
Yongpeng Li ◽  
...  
Keyword(s):  
Flower Development ◽  
Shoot Apical Meristem ◽  
Apical Meristem ◽  
Target Genes ◽  
Developmental Stages ◽  
Binding Motif ◽  
Phytochrome B ◽  
Helix Loop Helix ◽  
Before And After ◽  
Meristem Maintenance

Plant meristems are responsible for the generation of all plant tissues and organs. Here we show that the transcription factor (TF) FAR-RED ELONGATED HYPOCOTYL3 (FHY3) plays an important role in both floral meristem (FM) determinacy and shoot apical meristem maintenance in Arabidopsis, in addition to its well-known multifaceted roles in plant growth and development during the vegetative stage. Through genetic analyses, we show that WUSCHEL (WUS) and CLAVATA3 (CLV3), two central players in the establishment and maintenance of meristems, are epistatic to FHY3. Using genome-wide ChIP-seq and RNA-seq data, we identify hundreds of FHY3 target genes in flowers and find that FHY3 mainly acts as a transcriptional repressor in flower development, in contrast to its transcriptional activator role in seedlings. Binding motif-enrichment analyses indicate that FHY3 may coregulate flower development with three flower-specific MADS-domain TFs and four basic helix–loop–helix TFs that are involved in photomorphogenesis. We further demonstrate that CLV3, SEPALLATA1 (SEP1), and SEP2 are FHY3 target genes. In shoot apical meristem, FHY3 directly represses CLV3, which consequently regulates WUS to maintain the stem cell pool. Intriguingly, CLV3 expression did not change significantly in fhy3 and phytochrome B mutants before and after light treatment, indicating that FHY3 and phytochrome B are involved in light-regulated meristem activity. In FM, FHY3 directly represses CLV3, but activates SEP2, to ultimately promote FM determinacy. Taken together, our results reveal insights into the mechanisms of meristem maintenance and determinacy, and illustrate how the roles of a single TF may vary in different organs and developmental stages.

scholarly journals Correction to: The GhREV transcription factor regulate the development of shoot apical meristem in cotton (Gossypium hirsutum)

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Doudou YANG ◽  
Jing AN ◽  
Fangjun LI ◽  
A. Egrinya ENEJI ◽  
Xiaoli TIAN ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Gossypium Hirsutum ◽  
Shoot Apical Meristem ◽  
Apical Meristem

Flower meristem maintenance by TILLERS ABSENT 1 is essential for ovule development in rice

Development ◽  
2021 ◽  
Vol 148 (24) ◽  
Author(s):  
Wakana Tanaka ◽  
Suzuha Ohmori ◽  
Naoto Kawakami ◽  
Hiro-Yuki Hirano
Keyword(s):  
Stem Cells ◽  
Stem Cell ◽  
Flower Development ◽  
Shoot Apical Meristem ◽  
Apical Meristem ◽  
Stem Cell Marker ◽  
Ovule Development ◽  
Flower Meristem ◽  
Ovule Formation ◽  
Meristem Maintenance

ABSTRACT Plant development depends on the activity of pluripotent stem cells in meristems, such as the shoot apical meristem and the flower meristem. In Arabidopsis thaliana, WUSCHEL (WUS) is essential for stem cell homeostasis in meristems and integument differentiation in ovule development. In rice (Oryza sativa), the WUS ortholog TILLERS ABSENT 1 (TAB1) promotes stem cell fate in axillary meristem development, but its function is unrelated to shoot apical meristem maintenance in vegetative development. In this study, we examined the role of TAB1 in flower development. The ovule, which originates directly from the flower meristem, failed to differentiate in tab1 mutants, suggesting that TAB1 is required for ovule formation. Expression of a stem cell marker was completely absent in the flower meristem at the ovule initiation stage, indicating that TAB1 is essential for stem cell maintenance in the ‘final’ flower meristem. The ovule defect in tab1 was partially rescued by floral organ number 2 mutation, which causes overproliferation of stem cells. Collectively, it is likely that TAB1 promotes ovule formation by maintaining stem cells at a later stage of flower development.

scholarly journals The GhREV transcription factor regulate the development of shoot apical meristem in cotton (Gossypium hirsutum)

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Doudou YANG ◽  
AN Jing ◽  
LI Fangjun ◽  
ENEJI A. Egrinya ◽  
TIAN Xiaoli ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Gossypium Hirsutum ◽  
Shoot Apical Meristem ◽  
Apical Meristem

Shoot development – genetic interactions in the meristem

2005 ◽  
Vol 33 (6) ◽  
pp. 1499-1501 ◽  
Author(s):  
M.E. Byrne
Keyword(s):  
Transcription Factor ◽  
Transcription Factors ◽  
Shoot Apical Meristem ◽  
Apical Meristem ◽  
Shoot Development ◽  
Genetic Interactions ◽  
Leaf Patterning ◽  
Myb Domain ◽  
Homeodomain Transcription Factors

Development of the plant shoot is dependent on the shoot apical meristem. Interactions between KNOX homeodomain transcription factors and the myb domain transcription factor AS1 (ASYMMETRIC LEAVES1) regulate both meristem function as well as leaf patterning. This review summarizes these interactions.

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