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.

DRL1 regulates adaxial leaf patterning and shoot apical meristem activity inArabidopsis

2007 ◽  
Vol 50 (4) ◽  
pp. 467-474 ◽  
Author(s):  
Kiu-Hyung Cho ◽  
Hoonsung Choi ◽  
Motoaki Seki ◽  
Sang Eun Jun ◽  
Young Byung Yi ◽  
...  
Keyword(s):  
Shoot Apical Meristem ◽  
Apical Meristem ◽  
Leaf Patterning

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 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

scholarly journals Vascular structure contributes to shoot sectoriality in Selaginella kraussiana

2016 ◽  
Vol 85 (3) ◽  
Author(s):  
Edyta M. Gola ◽  
Judith A. Jernstedt
Keyword(s):  
Shoot Apical Meristem ◽  
Apical Meristem ◽  
Vascular System ◽  
Shoot Development ◽  
Specific Structure ◽  
Developmental Changes ◽  
Vascular Structure ◽  
Vascular Connections

<em>Selaginella</em> species are characterized by regular anisotomous dichotomous divisions of the shoot apical meristem, giving rise to two new axes (branches) which differ in size. A vital process is the formation of vascular connections, which enables continuous communication and consequent functional and developmental integration of a plant during branching. Here, we present the sequence of developmental changes in the vascular system of <em>Selaginella kraussiana</em> related to dichotomous branching. Stem vasculature in <em>Selaginella kraussiana</em> consists of two meristeles which change in arrangement during shoot development. Using dye tracers, we documented developmental functional isolation of meristeles associated with the specific structure of the stelar system, which results in a spatiotemporal sectoriality of the shoot. We discuss sectoriality in terms of possible significance for shoot development.

scholarly journals Leaf and axillary shoot development from the shoot apical meristem

2003 ◽  
Vol 15 (1) ◽  
pp. 18-29
Author(s):  
Ken-ichiro Hibara ◽  
Masao Tasaka
Keyword(s):  
Shoot Apical Meristem ◽  
Apical Meristem ◽  
Shoot Development ◽  
Axillary Shoot

scholarly journals Hunchback activates Bicoid in post-mitotic Pair1 neurons to regulate synapse number

2021 ◽  
Author(s):  
Kristen M Lee ◽  
Amanda M Linskens ◽  
Chris Q Doe
Keyword(s):  
Transcription Factor ◽  
Transcription Factors ◽  
Neural Circuits ◽  
Neural Circuit ◽  
Anatomical Location ◽  
Mature Neuron ◽  
Synapse Density ◽  
And Function ◽  
And Behavior ◽  
Homeodomain Transcription Factors

The proper formation and function of neural circuits is crucial for cognition, sensation, and behavior. Neural circuits are highly-specific, and this specificity is dependent on neurons developing key features of their individual identities: morphology, anatomical location, molecular expression and biophysiological properties. Previous research has demonstrated that a neurons identity is, in part, generated by the temporal transcription window the neuron is born in, and the homeodomain transcription factors expressed in the mature neuron. However, whether temporal transcription factors and homeodomain transcription factors regulate neural circuit formation, maintenance and function remains unknown. Here, we utilize a well-characterized neural circuit in the Drosophila larvae, the Pair1 neuron. We determined that in the Pair1 neuron, the temporal transcription factor Hunchback activates the homeodomain transcription factor Bicoid (Bcd). Both Hunchback and Bcd are expressed in Pair1 throughout larval development. Interestingly, Hunchback and Bcd were not required in Pair1 for neurotransmitter identity or axonal morphology, but were required for synapse density. We found that these transcription factors were functioning post-mitotically in Pair1 to regulate synapse density. Additionally, knocking down Hunchback and Bcd in Pair1 neurons disrupted the behavioral output of the circuit. We utilized the genetic tool TransTango to determine that Hunchback function in Pair1 is to repress forming synapses with erroneous neurons. To our knowledge, these data are the first to show Hunchback activating Bcd expression, as well as the first to demonstrate a role for Hunchback and Bcd post-mitotically.

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