Acclimative changes in root epidermal cell fate in response to Fe and P deficiency: a specific role for auxin?

PROTOPLASMA ◽  
2001 ◽  
Vol 218 (1-2) ◽  
pp. 67-75 ◽  
Author(s):  
A. Schikora ◽  
W. Schmidt
Keyword(s):  
Cell Fate ◽  
Epidermal Cell ◽  
Specific Role ◽  
P Deficiency

The TTG Gene Is Required to Specify Epidermal Cell Fate and Cell Patterning in the Arabidopsis Root

1994 ◽  
Vol 166 (2) ◽  
pp. 740-754 ◽  
Author(s):  
Moira E. Galway ◽  
James D. Masucci ◽  
Alan M. Lloyd ◽  
Virginia Walbot ◽  
Ronald W. Davis ◽  
...  
Keyword(s):  
Cell Fate ◽  
Epidermal Cell ◽  
Cell Patterning ◽  
Arabidopsis Root

scholarly journals Epidermal cell fate and patterning in leaves.

1997 ◽  
Vol 9 (7) ◽  
pp. 1109-1120 ◽  
Author(s):  
J C Larkin ◽  
M D Marks ◽  
J Nadeau ◽  
F Sack
Keyword(s):  
Cell Fate ◽  
Epidermal Cell

scholarly journals Advances in the Regulation of Epidermal Cell Development by C2H2 Zinc Finger Proteins in Plants

2021 ◽  
Vol 12 ◽  
Author(s):  
Guoliang Han ◽  
Yuxia Li ◽  
Ziqi Qiao ◽  
Chengfeng Wang ◽  
Yang Zhao ◽  
...  
Keyword(s):  
Cell Fate ◽  
Zinc Finger ◽  
Epidermal Cell ◽  
Stress Responses ◽  
Root Hairs ◽  
Zinc Finger Proteins ◽  
Cell Development ◽  
Salt Glands ◽  
Plant Adaptation ◽  
C2h2 Zinc Finger

Plant epidermal cells, such as trichomes, root hairs, salt glands, and stomata, play pivotal roles in the growth, development, and environmental adaptation of terrestrial plants. Cell fate determination, differentiation, and the formation of epidermal structures represent basic developmental processes in multicellular organisms. Increasing evidence indicates that C2H2 zinc finger proteins play important roles in regulating the development of epidermal structures in plants and plant adaptation to unfavorable environments. Here, we systematically summarize the molecular mechanism underlying the roles of C2H2 zinc finger proteins in controlling epidermal cell formation in plants, with an emphasis on trichomes, root hairs, and salt glands and their roles in plant adaptation to environmental stress. In addition, we discuss the possible roles of homologous C2H2 zinc finger proteins in trichome development in non-halophytes and salt gland development in halophytes based on bioinformatic analysis. This review provides a foundation for further study of epidermal cell development and abiotic stress responses in plants.

scholarly journals Brassinosteroids control root epidermal cell fate via direct regulation of a MYB-bHLH-WD40 complex by GSK3-like kinases

eLife ◽  
2014 ◽  
Vol 3 ◽  
Author(s):  
Yinwei Cheng ◽  
Wenjiao Zhu ◽  
Yuxiao Chen ◽  
Shinsaku Ito ◽  
Tadao Asami ◽  
...  
Keyword(s):  
Hair Cell ◽  
Cell Fate ◽  
Epidermal Cell ◽  
Hair Cells ◽  
Root Hair ◽  
Cell Nuclei ◽  
Brassinosteroid Signaling ◽  
Root Hair Formation ◽  
A Cell ◽  
Transcriptional Complex

In Arabidopsis, root hair and non-hair cell fates are determined by a MYB-bHLH-WD40 transcriptional complex and are regulated by many internal and environmental cues. Brassinosteroids play important roles in regulating root hair specification by unknown mechanisms. Here, we systematically examined root hair phenotypes in brassinosteroid-related mutants, and found that brassinosteroid signaling inhibits root hair formation through GSK3-like kinases or upstream components. We found that with enhanced brassinosteroid signaling, GL2, a cell fate marker for non-hair cells, is ectopically expressed in hair cells, while its expression in non-hair cells is suppressed when brassinosteroid signaling is reduced. Genetic analysis demonstrated that brassinosteroid-regulated root epidermal cell patterning is dependent on the WER-GL3/EGL3-TTG1 transcriptional complex. One of the GSK3-like kinases, BIN2, interacted with and phosphorylated EGL3, and EGL3s mutated at phosphorylation sites were retained in hair cell nuclei. BIN2 phosphorylated TTG1 to inhibit the activity of the WER-GL3/EGL3-TTG1 complex. Thus, our study provides insights into the mechanism of brassinosteroid regulation of root hair patterning.

scholarly journals Induction of epidermal cell fate in Arabidopsis shoots

2013 ◽  
Vol 8 (11) ◽  
pp. e26236 ◽  
Author(s):  
Shinobu Takada ◽  
Nozomi Takada ◽  
Ayaka Yoshida
Keyword(s):  
Cell Fate ◽  
Epidermal Cell

scholarly journals Supra-physiological levels of Gibberellins/DELLAs alter the patterning, morphology and abundance of root hairs in root tips of A. thaliana seedlings

2021 ◽  
Author(s):  
Iva McCarthy-Suarez
Keyword(s):  
Gene Expression ◽  
Cell Fate ◽  
Epidermal Cell ◽  
Root Hair ◽  
Root Hairs ◽  
Root Tip ◽  
Spatial Patterning ◽  
Root Tips ◽  
Root Epidermis

In spite of the known role of gibberellins (GAs), and of their antagonistic proteins, the DELLAs, in leaf hair production, no investigations, however, have assessed their hypothetical function in the production of root hairs. To this aim, the effects of supra-physiological levels of GAs/DELLAs on the spatial patterning of gene expression of the root hair (CPC) and root non-hair (GL2, EGL3 and WER) epidermal cell fate markers, as well as on the distribution, morphology and abundance of root hairs, were studied in root tips of 5-day-old A. thaliana seedlings. Results showed that excessive levels of GAs/DELLAs impaired the spatial patterning of gene expression of the root hair/non-hair epidermal cell fate markers, as well as the arrangement, shape and frequency of root hairs, giving rise to ectopic hairs and ectopic non-hairs, two-haired cells, two-tipped hairs, branched hairs, longer and denser hairs near the root tip under excessive DELLAs, and shorter and scarcer hairs near the root tip under excessive GAs. However, when the gai-1 (GA-insensitive-1) DELLA mutant protein was specifically over-expressed at the root epidermis, no changes in the patterning or abundance of root hairs occurred. Thus, these results suggest that, in seedlings of A. thaliana, the GAs/DELLAs might have a role in regulating the patterning, morphology and abundance of root hairs by acting from the sub-epidermal tissues of the root.

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