scholarly journals AUXIN-BINDING-PROTEIN1, the second auxin receptor: what is the significance of a two-receptor concept in plant signal transduction?

2011 ◽  
Vol 62 (10) ◽  
pp. 3339-3357 ◽  
Author(s):  
G. F. E. Scherer
Keyword(s):  
Signal Transduction ◽  
Auxin Receptor ◽  
Plant Signal Transduction ◽  
Auxin Binding

Auxin signal transduction

2015 ◽  
Vol 58 ◽  
pp. 1-12 ◽  
Author(s):  
Gretchen Hagen
Keyword(s):  
Signal Transduction ◽  
Transcriptional Activation ◽  
Molecular Mechanisms ◽  
Molecular Genetic ◽  
Auxin Receptor ◽  
Future Goals ◽  
Repressor Proteins ◽  
Auxin Binding ◽  
Transcriptional Complex ◽  
Auxin Signal Transduction

The plant hormone auxin (indole-3-acetic acid, IAA) controls growth and developmental responses throughout the life of a plant. A combination of molecular, genetic and biochemical approaches has identified several key components involved in auxin signal transduction. Rapid auxin responses in the nucleus include transcriptional activation of auxin-regulated genes and degradation of transcriptional repressor proteins. The nuclear auxin receptor is an integral component of the protein degradation machinery. Although auxin signalling in the nucleus appears to be short and simple, recent studies indicate that there is a high degree of diversity and complexity, largely due to the existence of multigene families for each of the major molecular components. Current studies are attempting to identify interacting partners among these families, and to define the molecular mechanisms involved in the interactions. Future goals are to determine the levels of regulation of the key components of the transcriptional complex, to identify higher-order complexes and to integrate this pathway with other auxin signal transduction pathways, such as the pathway that is activated by auxin binding to a different receptor at the outer surface of the plasma membrane. In this case, auxin binding triggers a signal cascade that affects a number of rapid cytoplasmic responses. Details of this pathway are currently under investigation.

scholarly journals In silico promoter and expression analyses of rice Auxin Binding Protein 57 (ABP57)

2021 ◽  
Vol 8 (3) ◽  
pp. 741-748
Author(s):  
Farah Afiqah Baharuddin ◽  
Zhan Xuan Khong ◽  
Zamri Zainal ◽  
Noor Liyana Sukiran
Keyword(s):  
Abiotic Stress ◽  
In Silico ◽  
Binding Protein ◽  
Transcript Level ◽  
Regulatory Elements ◽  
Biochemical Properties ◽  
Auxin Receptor ◽  
Reverse Transcription Pcr ◽  
Auxin Binding ◽  
Auxin Binding Protein

Auxin Binding Protein 57 (ABP57) is one of the molecular components involved in rice response to abiotic stress. The ABP57 gene encodes an auxin receptor which functions in activating the plasma membrane H+-ATPase. Biochemical properties of ABP57 have been characterized; however, the function of ABP57, particularly on stress and hormone responses is still limited. This study was conducted to understand the regulation of ABP57 expression under abiotic stress. Thus, in silico identification of cis-acting regulatory elements (CAREs) in the promoter region of ABP57 was performed. Several motifs and transcription factor binding site (TFBS) that are involved in abiotic stress such as ABRE, DRE, AP2/EREBP, WRKY and NAC were identified. Next, expression analysis of ABP57 under drought, salt, auxin (IAA) and abscisic acid (ABA) was conducted by reverse transcription-PCR (RT-PCR) to verify the effect of these treatments on ABP57 transcript level. ABP57 was expressed at different levels in the shoot and root under drought conditions, and its expression was increased under IAA and ABA treatments. Moreover, our results showed that ABP57 expression in the root was more responsive to drought, auxin and ABA treatments compared to its transcript in the shoot. This finding suggests that ABP57 is a drought-responsive gene and possibly regulated by IAA and ABA.

scholarly journals Signal transduction, cell division, differentiation and development: towards unifying mechanisms for pattern formation in plants

2003 ◽  
Vol 15 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Marcelo Carnier Dornelas
Keyword(s):  
Signal Transduction ◽  
Cell Division ◽  
Pattern Formation ◽  
Cell Communication ◽  
Molecular Control ◽  
Form And Function ◽  
Plant Signal Transduction ◽  
Model Plant Arabidopsis Thaliana ◽  
Plant Form ◽  
And Function

The elaboration of plant form and function depends on the ability of a plant cell to divide and differentiate. The decisions of individual cells to enter the cell cycle, maintain proliferation competence, become quiescent, expand, differentiate, or die depend on cell-to-cell communication and on the perception of various signals. These signals can include hormones, nutrients, light, temperature, and internal positional and developmental cues. In recent years, progress has been made in understanding the molecular control of plant pattern formation, especially in the model plant Arabidopsis thaliana. Furthermore, specific genes have been found that are necessary for normal pattern formation and the control of the rates of cell division and differentiation. Cloning of these genes is revealing the molecular basis of plant pattern formation and the key players on plant signal transduction systems.

scholarly journals Synthetic molecules: helping to unravel plant signal transduction

2013 ◽  
Vol 6 (2) ◽  
pp. 43-50 ◽  
Author(s):  
Wei Xuan ◽  
Evan Murphy ◽  
Tom Beeckman ◽  
Dominique Audenaert ◽  
Ive De Smet
Keyword(s):  
Signal Transduction ◽  
Plant Signal Transduction ◽  
Synthetic Molecules

scholarly journals Nanoselenium Transformation And Inhibition of Cadmium Accumulation By Regulating The Lignin Biosynthetic Pathway And Plant Hormone Signal Transduction In Pepper Plants

2021 ◽  
Author(s):  
Dong Li ◽  
Chunran Zhou ◽  
Jinling Ma ◽  
Yangliu Wu ◽  
Lu Kang ◽  
...  
Keyword(s):  
Signal Transduction ◽  
Cell Walls ◽  
Biosynthetic Pathway ◽  
Lignin Biosynthesis ◽  
Cadmium Accumulation ◽  
Protective Mechanism ◽  
Plant Signal Transduction ◽  
Lignin Biosynthetic Pathway ◽  
Pepper Plants

Abstract Selenium (Se) can promote the growth and resistance of agricultural crops as fertilizers, while the role of nano-selenium (nano-Se) against Cd remains unclear in pepper plants (Capsicum annuum L.). Biofortification with nano-Se observably restored Cd stress by decreasing the level of Cd in plant tissues and boosting the accumulation in biomass. The Se compounds transformed by nano-Se were primarily in the form of SeMet and MeSeCys in pepper tissues. Differential metabolites and the genes of plant signal transduction and lignin biosynthesis were measured by employing transcriptomics and determining target metabolites. The number of lignin-related genes (PAL, CAD, 4CL, and COMT) and contents of metabolites (sinapyl alcohol, phenylalanine, p-coumaryl alcohol, caffeyl alcohol, and coniferaldehyde) were remarkably enhanced by treatment with Cd1Se0.2, thus, maintaining the integrity of cell walls in the roots. It also enhanced signal transduction by plant hormones and responsive resistance by inducing the biosynthesis of genes (BZR1, LOX3, and NCDE1) and metabolites (brassinolide, abscisic acid, and jasmonic acid) in the roots and leaves. In general, this study can enable a better understanding of the protective mechanism of nano-Se in improving the capacity of plants to resist environmental stress.

Plant Signal Transduction and Defense Against Viral Pathogens

2006 ◽  
pp. 161-191 ◽  
Author(s):  
Pradeep Kachroo ◽  
A.C. Chandra‐Shekara ◽  
Daniel F. Klessig
Keyword(s):  
Signal Transduction ◽  
Viral Pathogens ◽  
Plant Signal Transduction
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