scholarly journals Interplay between Hormones and Several Abiotic Stress Conditions on Arabidopsis thaliana Primary Root Development

Cells ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 2576
Author(s):  
Brenda Anabel López-Ruiz ◽  
Estephania Zluhan-Martínez ◽  
María de la Paz Sánchez ◽  
Elena R. Álvarez-Buylla ◽  
Adriana Garay-Arroyo
Keyword(s):  
Arabidopsis Thaliana ◽  
Abiotic Stress ◽  
Root Development ◽  
Environmental Conditions ◽  
Primary Root ◽  
Stress Conditions ◽  
External Conditions ◽  
Response To Stress ◽  
Primary Root Growth ◽  
Sessile Organisms

As sessile organisms, plants must adjust their growth to withstand several environmental conditions. The root is a crucial organ for plant survival as it is responsible for water and nutrient acquisition from the soil and has high phenotypic plasticity in response to a lack or excess of them. How plants sense and transduce their external conditions to achieve development, is still a matter of investigation and hormones play fundamental roles. Hormones are small molecules essential for plant growth and their function is modulated in response to stress environmental conditions and internal cues to adjust plant development. This review was motivated by the need to explore how Arabidopsis thaliana primary root differentially sense and transduce external conditions to modify its development and how hormone-mediated pathways contribute to achieve it. To accomplish this, we discuss available data of primary root growth phenotype under several hormone loss or gain of function mutants or exogenous application of compounds that affect hormone concentration in several abiotic stress conditions. This review shows how different hormones could promote or inhibit primary root development in A. thaliana depending on their growth in several environmental conditions. Interestingly, the only hormone that always acts as a promoter of primary root development is gibberellins.

scholarly journals Higher order Arabidopsis 14-3-3 mutants show 14-3-3 involvement in primary root growth both under control and abiotic stress conditions

2014 ◽  
Vol 65 (20) ◽  
pp. 5877-5888 ◽  
Author(s):  
P. J. M. van Kleeff ◽  
N. Jaspert ◽  
K. W. Li ◽  
S. Rauch ◽  
C. Oecking ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Root Growth ◽  
Primary Root ◽  
Higher Order ◽  
Stress Conditions ◽  
Primary Root Growth

Hormone signalling and root development: an update on the latest Arabidopsis thaliana research

2007 ◽  
Vol 34 (3) ◽  
pp. 163 ◽  
Author(s):  
Jose Manuel Perez-Perez
Keyword(s):  
Arabidopsis Thaliana ◽  
Root Development ◽  
Stress Responses ◽  
Primary Root ◽  
Biotic Interactions ◽  
Signalling Pathways ◽  
Molecular Events ◽  
Sessile Organisms ◽  
Hormone Signalling ◽  
Hormonal Signalling

Plants are sessile organisms whose developmental programs depend mainly on environmental cues that are sensed and interpreted through hormonal signalling pathways. Roots are specialised plant organs that are instrumental during water and nutrient uptake, biotic interactions, stress responses and for mechanical support. Our knowledge about the basic molecular events shaping root patterning and growth has advanced significantly in the past few years thanks to the use of Arabidopsis thaliana (L.) Heynh. as a model system. In this review, I will discuss recent findings that indicate crosstalk between growth regulators and hormone signalling pathways during primary root development. Further comparative research using non-model species will shed light on the conserved developmental modules among distant lineages involved in root architecture.

scholarly journals MES7 Modulates Seed Germination via Regulating Salicylic Acid Content in Arabidopsis

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 903
Author(s):  
Wenrui Gao ◽  
Yan Liu ◽  
Juan Huang ◽  
Yaqiu Chen ◽  
Chen Chen ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Salt Stress ◽  
Abiotic Stress ◽  
Seed Germination ◽  
Environmental Conditions ◽  
Acid Content ◽  
Hydrolytic Enzyme ◽  
Stress Conditions ◽  
Transitional Period ◽  
Highly Sensitive

Seed germination is an important phase transitional period of angiosperm plants during which seeds are highly sensitive to different environmental conditions. Although seed germination is under the regulation of salicylic acid (SA) and other hormones, the molecular mechanism underlying these regulations remains mysterious. In this study, we determined the expression of SA methyl esterase (MES) family genes during seed germination. We found that MES7 expression decreases significantly in imbibed seeds, and the dysfunction of MES7 decreases SA content. Furthermore, MES7 reduces and promotes seed germination under normal and salt stress conditions, respectively. The application of SA restores the seed germination deficiencies of mes7 mutants under different conditions. Taking together, our observations uncover a MeSA hydrolytic enzyme, MES7, regulates seed germination via altering SA titer under normal and abiotic stress conditions.

scholarly journals Functional Characterization of DEAD-Box RNA Helicases in Arabidopsis thaliana under Abiotic Stress Conditions

2008 ◽  
Vol 49 (10) ◽  
pp. 1563-1571 ◽  
Author(s):  
Jin Sun Kim ◽  
Kyung Ae Kim ◽  
Tae Rin Oh ◽  
Chul Min Park ◽  
Hunseung Kang
Keyword(s):  
Arabidopsis Thaliana ◽  
Abiotic Stress ◽  
Functional Characterization ◽  
Stress Conditions ◽  
Rna Helicases ◽  
Dead Box

Apical meristem exhaustion during determinate primary root growth in the moots koom 1 mutant of Arabidopsis thaliana

Planta ◽  
2011 ◽  
Vol 234 (6) ◽  
pp. 1163-1177 ◽  
Author(s):  
Alejandra Hernández-Barrera ◽  
Yamel Ugartechea-Chirino ◽  
Svetlana Shishkova ◽  
Selene Napsucialy-Mendivil ◽  
Aleš Soukup ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Root Growth ◽  
Apical Meristem ◽  
Primary Root ◽  
Primary Root Growth

scholarly journals Overexpression of a Novel Component Induces HAK5 and Enhances Growth in Arabidopsis

ISRN Botany ◽  
2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Eri Adams ◽  
Celine Diaz ◽  
Minami Matsui ◽  
Ryoung Shin
Keyword(s):  
Arabidopsis Thaliana ◽  
Salt Stress ◽  
Adaptive Response ◽  
Screening Method ◽  
Primary Root ◽  
Nutrient Deficiency ◽  
Potassium Deficiency ◽  
Low Potassium ◽  
Primary Root Growth ◽  
Gene Hunting

Plants have developed mechanisms to adapt to the potassium deficient conditions over the years. In Arabidopsis thaliana, expression of a potassium transporter HAK5 is induced in low potassium conditions as an adaptive response to nutrient deficiency. In order to understand the mechanism in which HAK5 is regulated, the full-length cDNA overexpressor gene hunting system was employed as a screening method. Of 40 genes recovered, At4g18280 was found to be dramatically induced in response to potassium-deficiency and salt stress. Plants overexpressing this gene showed higher HAK5 expression and enhanced growth. These plants were also less sensitive to potassium-deficiency in terms of primary root growth. Taken together, these data suggest that this novel component, At4g18280, contributes to regulation of HAK5 and, consequently, tolerance to potassium-deficiency in plants.

scholarly journals Exogenous Nitro-Oleic Acid Treatment Inhibits Primary Root Growth by Reducing the Mitosis in the Meristem in Arabidopsis thaliana

2020 ◽  
Vol 11 ◽  
Author(s):  
Luciano M. Di Fino ◽  
Ignacio Cerrudo ◽  
Sonia R. Salvatore ◽  
Francisco J. Schopfer ◽  
Carlos García-Mata ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Oleic Acid ◽  
Root Growth ◽  
Acid Treatment ◽  
Primary Root ◽  
Primary Root Growth

scholarly journals Nitrate Induction of Primary Root Growth Requires Cytokinin Signaling in Arabidopsis thaliana

2019 ◽  
Vol 61 (2) ◽  
pp. 342-352 ◽  
Author(s):  
Pamela A Naulin ◽  
Grace I Armijo ◽  
Andrea S Vega ◽  
Karem P Tamayo ◽  
Diana E Gras ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Cell Division ◽  
Root Growth ◽  
Primary Root ◽  
Growth Arrest ◽  
Root Tip ◽  
Wild Type ◽  
Cytokinin Signaling ◽  
Control Growth ◽  
Primary Root Growth

Abstract Nitrate can act as a potent signal to control growth and development in plants. In this study, we show that nitrate is able to stimulate primary root growth via increased meristem activity and cytokinin signaling. Cytokinin perception and biosynthesis mutants displayed shorter roots as compared with wild-type plants when grown with nitrate as the only nitrogen source. Histological analysis of the root tip revealed decreased cell division and elongation in the cytokinin receptor double mutant ahk2/ahk4 as compared with wild-type plants under a sufficient nitrate regime. Interestingly, a nitrate-dependent root growth arrest was observed between days 5 and 6 after sowing. Wild-type plants were able to recover from this growth arrest, while cytokinin signaling or biosynthesis mutants were not. Transcriptome analysis revealed significant changes in gene expression after, but not before, this transition in contrasting genotypes and nitrate regimes. We identified genes involved in both cell division and elongation as potentially important for primary root growth in response to nitrate. Our results provide evidence linking nitrate and cytokinin signaling for the control of primary root growth in Arabidopsis thaliana.

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