scholarly journals Blue Light Regulates Phosphate Deficiency-Dependent Primary Root Growth Inhibition in Arabidopsis

2020 ◽  
Vol 10 ◽  
Author(s):  
Chuan-Ming Yeh ◽  
Koichi Kobayashi ◽  
Sho Fujii ◽  
Hidehiro Fukaki ◽  
Nobutaka Mitsuda ◽  
...  
Keyword(s):  
Root Growth ◽  
Growth Inhibition ◽  
Blue Light ◽  
Primary Root ◽  
Phosphate Deficiency ◽  
Root Growth Inhibition ◽  
Primary Root Growth

scholarly journals PIF3 Is Involved in the Primary Root Growth Inhibition of Arabidopsis Induced by Nitric Oxide in the Light

2014 ◽  
Vol 7 (4) ◽  
pp. 616-625 ◽  
Author(s):  
Sulan Bai ◽  
Tao Yao ◽  
Miaomiao Li ◽  
Xiaomin Guo ◽  
Yaochuan Zhang ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Root Growth ◽  
Growth Inhibition ◽  
Primary Root ◽  
Root Growth Inhibition ◽  
Primary Root Growth

JAR1 negatively regulates root growth under boron deficiency in Arabidopsis

2021 ◽  
Author(s):  
Yupu Huang ◽  
Sheliang Wang ◽  
Lei Shi ◽  
Fangsen Xu
Keyword(s):  
Plant Growth ◽  
Root Growth ◽  
Growth Inhibition ◽  
Primary Root ◽  
Root Growth Inhibition ◽  
Boron Deficiency ◽  
Ethylene Signaling ◽  
Protein Levels ◽  
Primary Root Growth ◽  
Ja Signaling

Abstract Boron (B) is an essential micronutrient for plant growth and development. Jasmonic acid (JA) plays pivotal roles in plant growth. However, the underlying molecular mechanism of JA involvement in B-deficiency-induced root growth inhibition is yet to be explored. In this study, we investigated the response of JA to B deficiency and the mechanism of JAR1-dependent JA signaling in root growth inhibition under B deficiency. B deficiency enhanced JA signaling in roots, and root growth inhibition was partially restored by JA biosynthesis inhibition. jar1-1 (jasmonate-resistant 1, JAR1) mutant, mutants of coronatine-insensitive 1 (coi1-2) and myc2 defective in JA signaling showed insensitivity to B deficiency. Ethylene-overproduction mutant eto1 and ethylene-insensitive mutant etr1 showed sensitivity and insensitivity to B deficiency, respectively, suggesting that ethylene is involved in the inhibition of primary root growth under B deficiency. Furthermore, after a declined in EIN3 protein levels, which may contribute to root growth, ethylene signaling was weakened in the jar1-1 mutant root under B deficiency. Under B deficiency, B concentrations were increased in the roots and shoots of the jar1-1 mutant, owing to the large root system and its activity. Therefore, our findings revealed that JA, which is involved in the inhibition of root growth under B deficiency, is regulated by JAR1 activated JA and ethylene signaling pathways.

scholarly journals AtOPR3 specifically inhibits primary root growth in Arabidopsis under phosphate deficiency

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Hongyan Zheng ◽  
Xiaoying Pan ◽  
Yuxia Deng ◽  
Huamao Wu ◽  
Pei Liu ◽  
...  
Keyword(s):  
Root Growth ◽  
Primary Root ◽  
Phosphate Deficiency ◽  
Primary Root Growth

scholarly journals Jasmonate Signalling Contributes to Primary Root Inhibition Upon Oxygen Deficiency in Arabidopsis thaliana

Plants ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1046 ◽  
Author(s):  
Vinay Shukla ◽  
Lara Lombardi ◽  
Ales Pencik ◽  
Ondrej Novak ◽  
Daan A. Weits ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Root Growth ◽  
Growth Inhibition ◽  
Feedback Inhibition ◽  
Oxygen Sensing ◽  
Oxygen Deficiency ◽  
Primary Root ◽  
Root Growth Inhibition ◽  
Root Inhibition ◽  
Active Root

Plants, including most crops, are intolerant to waterlogging, a stressful condition that limits the oxygen available for roots, thereby inhibiting their growth and functionality. Whether root growth inhibition represents a preventive measure to save energy or is rather a consequence of reduced metabolic rates has yet to be elucidated. In the present study, we gathered evidence for hypoxic repression of root meristem regulators that leads to root growth inhibition. We also explored the contribution of the hormone jasmonic acid (JA) to this process in Arabidopsis thaliana. Analysis of transcriptomic profiles, visualisation of fluorescent reporters and direct hormone quantification confirmed the activation of JA signalling under hypoxia in the roots. Further, root growth assessment in JA-related mutants in aerobic and anaerobic conditions indicated that JA signalling components contribute to active root inhibition under hypoxia. Finally, we show that the oxygen-sensing transcription factor (TF) RAP2.12 can directly induce Jasmonate Zinc-finger proteins (JAZs), repressors of JA signalling, to establish feedback inhibition. In summary, our study sheds new light on active root growth restriction under hypoxic conditions and on the involvement of the JA hormone in this process and its cross talk with the oxygen sensing machinery of higher plants.

scholarly journals Developmental Distribution of the Plasma Membrane-Enriched Proteome in the Maize Primary Root Growth Zone

2013 ◽  
Vol 4 ◽  
Author(s):  
Zhe Zhang ◽  
Priyamvada Voothuluru ◽  
Mineo Yamaguchi ◽  
Robert E. Sharp ◽  
Scott C. Peck
Keyword(s):  
Plasma Membrane ◽  
Root Growth ◽  
Primary Root ◽  
Growth Zone ◽  
Primary Root Growth
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