RIBOSE PHOSPHATE ISOMERSASE 1 Influences Root Development by Acting on Cell Wall Biosynthesis, Actin Organization, and Auxin Transport in Arabidopsis

Huang, Jiabao; Zou, Yi; Zhang, Xiaojing; Wang, Mingyan; Dong, Qingkun; Tao, Luwei

doi:10.3389/fpls.2019.01641

Cited by 8 publications

(4 citation statements)

References 67 publications

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“…(2020) confirmed that D-ribulose 5-phosphate forms an essential part of the cell wall biosynthesis pathway and seems to be upregulated in both the endodermis and epidermis during growth in high salt conditions (Huang et al, 2020). The upregulation of cell wall biosynthesis would allow for cells to maintain internal water retention during high salt growth conditions and provide better support for the root structure (Iyer-Pascuzzi et al, 2011;Kiegle et al, 2000;Zabotina et al, 2012).…”

Section: Predicting Stress Responsesmentioning

confidence: 85%

AraRoot - A Comprehensive Genome-Scale Metabolic Model for the Arabidopsis Root System

Esterhuizen,

Ampimah,

Yandeau-Nelson

et al. 2024

Preprint

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Being the first plant to have its genome sequenced, Arabidopsis thaliana (Arabidopsis) is a well-established genetic model plant system. Studies on Arabidopsis have provided major insights into plants' physiological and biochemical nature. Methods that allow us to computationally study the metabolism of organisms include the use of genome-scale metabolic models (GEMs). Despite its popularity, currently no GEM maps the metabolic activity in the roots of Arabidopsis, which is the organ that faces and responds to stress conditions in the soil. We've developed a comprehensive GEM of the Arabidopsis root system - AraRoot. The final model includes 2,682 reactions, 2,748 metabolites, and 1,310 genes. Analyzing the metabolic pathways in the model identified 158 possible bottleneck genes that impact biomass production, most of which were found to be related to phosphorous-containing- and energy-related pathways. Further insights into tissue-specific metabolic reprogramming conclude that the cortex layer in the roots is likely responsible for root growth under prolonged exposure to high salt conditions, while the endodermis and epidermis are responsible for producing metabolites responsible for increased cell wall biosynthesis. The epidermis was found to have a very poor ability to regulate its metabolism during exposure to high salt concentrations. Overall, AraRoot is the first GEM that accurately captures the comprehensive biomass formation and stress responses of the tissues in the Arabidopsis root system.

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Section: Predicting Stress Responsesmentioning

confidence: 85%

AraRoot - A Comprehensive Genome-Scale Metabolic Model for the Arabidopsis Root System

Esterhuizen,

Ampimah,

Yandeau-Nelson

et al. 2024

Preprint

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“…This hypothesis is supported by the negative effect of Latrunculin B-mediated actin depolymerization on the dynamics of CESA-containing Golgi bodies in roots or the decreased delivery and uptake of pectins and other polysaccharide components of the cell wall observed in other plant tissues ( Baluška et al, 2002 ; Leucci et al, 2006 ; Sampathkumar et al, 2013 ). Conversely, plant cells treated with the cell wall inhibitor isoxaben or mutants with decreased cellulose content show altered F-actin distribution ( Tolmie et al, 2017 ; Huang et al, 2020 ).…”

Section: Actin Organization and Dynamics Correlate With Root Cell Elongationmentioning

confidence: 99%

Bundling up the Role of the Actin Cytoskeleton in Primary Root Growth

García-González

Gelderen

2021

Front. Plant Sci.

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Primary root growth is required by the plant to anchor in the soil and reach out for nutrients and water, while dealing with obstacles. Efficient root elongation and bending depends upon the coordinated action of environmental sensing, signal transduction, and growth responses. The actin cytoskeleton is a highly plastic network that constitutes a point of integration for environmental stimuli and hormonal pathways. In this review, we present a detailed compilation highlighting the importance of the actin cytoskeleton during primary root growth and we describe how actin-binding proteins, plant hormones, and actin-disrupting drugs affect root growth and root actin. We also discuss the feedback loop between actin and root responses to light and gravity. Actin affects cell division and elongation through the control of its own organization. We remark upon the importance of longitudinally oriented actin bundles as a hallmark of cell elongation as well as the role of the actin cytoskeleton in protein trafficking and vacuolar reshaping during this process. The actin network is shaped by a plethora of actin-binding proteins; however, there is still a large gap in connecting the molecular function of these proteins with their developmental effects. Here, we summarize their function and known effects on primary root growth with a focus on their high level of specialization. Light and gravity are key factors that help us understand root growth directionality. The response of the root to gravity relies on hormonal, particularly auxin, homeostasis, and the actin cytoskeleton. Actin is necessary for the perception of the gravity stimulus via the repositioning of sedimenting statoliths, but it is also involved in mediating the growth response via the trafficking of auxin transporters and cell elongation. Furthermore, auxin and auxin analogs can affect the composition of the actin network, indicating a potential feedback loop. Light, in its turn, affects actin organization and hence, root growth, although its precise role remains largely unknown. Recently, fundamental studies with the latest techniques have given us more in-depth knowledge of the role and organization of actin in the coordination of root growth; however, there remains a lot to discover, especially in how actin organization helps cell shaping, and therefore root growth.

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“…Indeed, bul, bot1, and prc1 mutants, which have defects in microtubule organization and cellulose synthesis, exhibit short-root phenotypes [57][58][59]. The relationship between auxin and cell wall development remains largely unknown in root development, but a growing number of studies propose that auxin is possibly involved in the cell wall-mediated root development [60,61].…”

Section: Auxin and Root Developmentmentioning

confidence: 99%

Root Development and Stress Tolerance in rice: The Key to Improving Stress Tolerance without Yield Penalties

Seo

Seomun

Choi

et al. 2020

IJMS

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Roots anchor plants and take up water and nutrients from the soil; therefore, root development strongly affects plant growth and productivity. Moreover, increasing evidence indicates that root development is deeply involved in plant tolerance to abiotic stresses such as drought and salinity. These findings suggest that modulating root growth and development provides a potentially useful approach to improve plant abiotic stress tolerance. Such targeted approaches may avoid the yield penalties that result from growth–defense trade-offs produced by global induction of defenses against abiotic stresses. This review summarizes the developmental mechanisms underlying root development and discusses recent studies about modulation of root growth and stress tolerance in rice.

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RIBOSE PHOSPHATE ISOMERSASE 1 Influences Root Development by Acting on Cell Wall Biosynthesis, Actin Organization, and Auxin Transport in Arabidopsis

Cited by 8 publications

References 67 publications

AraRoot - A Comprehensive Genome-Scale Metabolic Model for the Arabidopsis Root System

AraRoot - A Comprehensive Genome-Scale Metabolic Model for the Arabidopsis Root System

Bundling up the Role of the Actin Cytoskeleton in Primary Root Growth

Root Development and Stress Tolerance in rice: The Key to Improving Stress Tolerance without Yield Penalties

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