scholarly journals Plant-Specific Histone Deacetylases HDT1/2 Regulate GIBBERELLIN 2-OXIDASE2 Expression to Control Arabidopsis Root Meristem Cell Number

2017 ◽  
Vol 29 (9) ◽  
pp. 2183-2196 ◽  
Author(s):  
Huchen Li ◽  
Jesus Torres-Garcia ◽  
David Latrasse ◽  
Moussa Benhamed ◽  
Stefan Schilderink ◽  
...  
Keyword(s):  
Histone Deacetylases ◽  
Root Meristem ◽  
Cell Number ◽  
Meristem Cell ◽  
Arabidopsis Root ◽  
Root Meristem Cell

ACTIVITY OF TUBULOSINE ON THE KINETICS OF ROOT MERISTEM CELL POPULATION

1975 ◽  
Vol 8 (1) ◽  
pp. 67-79
Author(s):  
Claude Pareyre ◽  
Guy Deysson
Keyword(s):  
Cell Population ◽  
Root Meristem ◽  
Meristem Cell ◽  
Root Meristem Cell ◽  
Kinetics Of

scholarly journals Nitrogen Deficiency-Induced Decrease in Cytokinins Content Promotes Rice Seminal Root Growth by Promoting Root Meristem Cell Proliferation and Cell Elongation

Cells ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 916
Author(s):  
Qi Wang ◽  
Yanchun Zhu ◽  
Xiao Zou ◽  
Fengfeng Li ◽  
Jialiang Zhang ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Root Growth ◽  
Cell Elongation ◽  
Developmental Plasticity ◽  
Root Meristem ◽  
Seminal Root ◽  
Down Regulation ◽  
Meristem Cell ◽  
Root Meristem Cell ◽  
N Deficiency

Rice (Oryza sativa L.) seedlings grown under nitrogen (N) deficiency conditions show a foraging response characterized by increased root length. However, the mechanism underlying this developmental plasticity is still poorly understood. In this study, the mechanism by which N deficiency influences rice seminal root growth was investigated. The results demonstrated that compared with the control (1 mM N) treatment, N deficiency treatments strongly promoted seminal root growth. However, the N deficiency-induced growth was negated by the application of zeatin, which is a type of cytokinin (CK). Moreover, the promotion of rice seminal root growth was correlated with a decrease in CK content, which was due to the N deficiency-mediated inhibition of CK biosynthesis through the down-regulation of CK biosynthesis genes and an enhancement of CK degradation through the up-regulation of CK degradation genes. In addition, the N deficiency-induced decrease in CK content not only enhanced the root meristem cell proliferation rate by increasing the meristem cell number via the down-regulation of OsIAA3 and up-regulation of root-expressed OsPLTs, but also promoted root cell elongation by up-regulating cell elongation-related genes, including root-specific OsXTHs and OsEXPs. Taken together, our data suggest that an N deficiency-induced decrease in CK content promotes the seminal root growth of rice seedlings by promoting root meristem cell proliferation and cell elongation.

scholarly journals Regulation of the stability of RGF1 receptor by the ubiquitin-specific proteases UBP12/UBP13 is critical for root meristem maintenance

2018 ◽  
Vol 115 (5) ◽  
pp. 1123-1128 ◽  
Author(s):  
Zhichao An ◽  
Yuliang Liu ◽  
Yang Ou ◽  
Jia Li ◽  
Baowen Zhang ◽  
...  
Keyword(s):  
Root Meristem ◽  
Peptide Hormone ◽  
Cell Number ◽  
Short Root ◽  
Meristem Cell ◽  
Meristem Development ◽  
Positive Regulators ◽  
Meristem Maintenance ◽  
The Stability ◽  
Close Homolog

ROOT MERISTEM GROWTH FACTOR (RGF) 1 is an important peptide hormone that regulates root growth. Upon binding to its receptor, RGFR1, RGF1 regulates the expression of two transcription factors, PLETHORA 1 and 2 (PLT1/2), to influence root meristem development. Here, we show that the ubiquitin-specific proteases UBP12 and UBP13 are positive regulators of root meristem development and that UBP13 interacts directly with RGF1 receptor (RGFR1) and its close homolog RGFR2. The ubp12,13 double-mutant root is completely insensitive to exogenous applied RGF1. Consistent with this result, RGF1-induced ubiquitination and turnover of RGFR1 protein were accelerated in ubp12,13-mutant plants but were delayed in transgenic plants overexpressing UBP13. Genetic analysis showed that PLT2 or RGFR1 overexpression partially rescued the short-root phenotype and the reduced cortical root meristem cell number in ubp12,13 plants. Together, our results demonstrate that UBP12/13 are regulators of the RGF1–RGFR1–PLT1/2 signaling pathway and that UBP12/13 can counteract RGF1-induced RGFR1 ubiquitination, stabilize RGFR1, and maintain root cell sensitivity to RGF1.

The epidermis‐specific cyclin CYCP3;1 is involved in the excess brassinosteroid signaling‐inhibited root meristem cell division

2020 ◽  
Vol 62 (11) ◽  
pp. 1674-1687
Author(s):  
Yuxiao Chen ◽  
Shiyong Sun ◽  
Xuelu Wang
Keyword(s):  
Cell Division ◽  
Root Meristem ◽  
Meristem Cell ◽  
Root Meristem Cell ◽  
Brassinosteroid Signaling

scholarly journals An AGAMOUS-Related MADS-Box Gene, XAL1 (AGL12), Regulates Root Meristem Cell Proliferation and Flowering Transition in Arabidopsis

2008 ◽  
Vol 146 (3) ◽  
pp. 1182-1192 ◽  
Author(s):  
Rosalinda Tapia-López ◽  
Berenice García-Ponce ◽  
Joseph G. Dubrovsky ◽  
Adriana Garay-Arroyo ◽  
Rigoberto V. Pérez-Ruíz ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Root Meristem ◽  
Mads Box ◽  
Meristem Cell ◽  
Root Meristem Cell ◽  
Mads Box Gene

Optical Flow Based Arabidopsis Thaliana Root Meristem Cell Division Detection

2010 ◽  
pp. 217-226 ◽  
Author(s):  
Pedro Quelhas ◽  
Ana Maria Mendonça ◽  
Aurélio Campilho
Keyword(s):  
Arabidopsis Thaliana ◽  
Cell Division ◽  
Optical Flow ◽  
Root Meristem ◽  
Meristem Cell ◽  
Root Meristem Cell
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