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Cells
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Local and Systemic Signals of Macronutrient and Water Availability Regulating...
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Local and Systemic Signals of Macronutrient and Water Availability Regulating Root Growth and Development

A special issue of Cells (ISSN 2073-4409). This special issue belongs to the section "Plant, Algae and Fungi Cell Biology".

Deadline for manuscript submissions: closed (31 May 2021) | Viewed by 5915

Special Issue Editor

Prof. Guzel R. Kudoyarova

E-Mail Website
Guest Editor
Ufa Institute of Biology of the Russian Academy of Sciences, Ufa, Russia
Interests: hormonal control of water relations and growth in plants during adaption to availability of macroelements and water
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Changes in resource (mineral nutrients and water) availability, due to their heterogeneous distribution in space and time, affect plant development. Plants need to sense these changes to optimize growth and biomass allocation by integrating root and shoot growth. Limited supply of water or nutrients can elicit similar physiological responses (the relative activation of root growth at the expense of shoot growth), and similar underlying mechanisms may affect perception and acquisition of either nutrients or water, although specific responses also exist and deserve attention. The roles of local and distant (root-to-shoot and shoot-to-root) signaling are important in coordinating changes in root and shoot growth and development. Involvement of plant hormones in regulating physiological responses such as stomatal and hydraulic conductance is revealed by measuring the effects of resource availability on phytohormone concentrations in roots and shoots, and their flow between roots and shoots in xylem and phloem saps. More specific evidence can be obtained by measuring the physiological responses of genotypes with altered hormone responses or concentrations. 

This Special Issue aims to summarize current knowledge on the roles of local and systemic signals of macronutrient and water availability in regulating root growth and development. We welcome reports on recent progress in identifying the molecular basis of the initial sensing of changes in nutrients and water supply, the similarity and diversity of changes in shoot growth, allocation to root growth, and root architecture under changes in water and nutrients availability, and the possible involvement of hormones in their regulation. A better understanding of these mechanisms may contribute to better crop management for efficient use of these resources and to selecting crops for improved performance under suboptimal soil conditions. 

We look forward to your contributions.

Prof. Guzel R. Kudoyarova
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Cells is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • mineral nutrients
  • water deficit
  • intracellular and long-distance signaling
  • hormones
  • sugars
  • growth
  • root architecture
  • gene expression
  • transgenic plants
  • mutants

Published Papers (2 papers)

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Research

17 pages, 3316 KiB  
Article
Molecular Characterization of NDL1-AGB1 Mediated Salt Stress Signaling: Further Exploration of the Role of NDL1 Interacting Partners
by Nidhi Gupta, Abhishek Kanojia, Arpana Katiyar and Yashwanti Mudgil
Cells 2021, 10(9), 2261; https://doi.org/10.3390/cells10092261 - 31 Aug 2021
Cited by 7 | Viewed by 2221
Abstract
Salt stress is considered to be the most severe abiotic stress. High soil salinity leads to osmotic and ionic toxicity, resulting in reduced plant growth and crop production. The role of G-proteins during salt stresses is well established. AGB1, a G-protein subunit, not [...] Read more.
Salt stress is considered to be the most severe abiotic stress. High soil salinity leads to osmotic and ionic toxicity, resulting in reduced plant growth and crop production. The role of G-proteins during salt stresses is well established. AGB1, a G-protein subunit, not only plays an important role during regulation of Na+ fluxes in roots, but is also involved in the translocation of Na+ from roots to shoots. N-Myc Downregulated like 1 (NDL1) is an interacting partner of G protein βγ subunits and C-4 domain of RGS1 in Arabidopsis. Our recent in-planta expression analysis of NDL1 reported changes in patterns during salt stress. Based on these expression profiles, we have carried out functional characterization of the AGB1-NDL1 module during salinity stress. Using various available mutant and overexpression lines of NDL1 and AGB1, we found that NDL1 acts as a negative regulator during salt stress response at the seedling stage, an opposite response to that of AGB1. On the other hand, during the germination phase of the plant, this role is reversed, indicating developmental and tissue specific regulation. To elucidate the mechanism of the AGB1-NDL1 module, we investigated the possible role of the three NDL1 stress specific interactors, namely ANNAT1, SLT1, and IDH-V, using yeast as a model. The present study revealed that NDL1 acts as a modulator of salt stress response, wherein it can have both positive as well as negative functions during salinity stress. Our findings suggest that the NDL1 mediated stress response depends on its developmental stage-specific expression patterns as well as the differential presence and interaction of the stress-specific interactors. Full article
(This article belongs to the Special Issue Local and Systemic Signals of Macronutrient and Water Availability Regulating Root Growth and Development)
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12 pages, 2800 KiB  
Article
Limitation of Cytokinin Export to the Shoots by Nucleoside Transporter ENT3 and Its Linkage with Root Elongation in Arabidopsis
by Alla Korobova, Bulat Kuluev, Torsten Möhlmann, Dmitriy Veselov and Guzel Kudoyarova
Cells 2021, 10(2), 350; https://doi.org/10.3390/cells10020350 - 08 Feb 2021
Cited by 5 | Viewed by 3209
Abstract
The trans-membrane carrier AtENT3 is known to transport externally supplied cytokinin ribosides and thus promote uptake by cells. However, its role in distributing either exogenous or endogenous cytokinins within the intact plant has not hitherto been reported. To test this, we used ent3-1 [...] Read more.
The trans-membrane carrier AtENT3 is known to transport externally supplied cytokinin ribosides and thus promote uptake by cells. However, its role in distributing either exogenous or endogenous cytokinins within the intact plant has not hitherto been reported. To test this, we used ent3-1 mutant Arabidopsis seedlings in which the gene is not expressed due to a T-DNA insertion, and examined the effect on the concentration and distribution of either endogenous cytokinins or exogenous trans-zeatin riboside applied to the roots. In the mutant, accumulation of endogenous cytokinins in the roots was reduced and capacity to deliver externally supplied trans-zeatin riboside to the shoots was increased suggesting involvement of equilibrative nucleoside (ENT) transporter in the control of cytokinin distribution in the plants. Roots of ent3-1 were longer in the mutant in association with their lower cytokinin concentration. We concluded that the ENT3 transporter participates in partitioning endogenous cytokinins between the apoplast and the symplast by facilitating their uptake by root cells thereby limiting cytokinin export to the shoots through the xylem. Dilution of the mineral nutrient solution lowered endogenous cytokinin concentration in the roots of both wild type (WT) and ent3-1 plants accompanied by promotion of root elongation. Nevertheless, cytokinin content was lower, while roots were longer in the ent3-1 mutant than in the WT under either normal or deficient mineral nutrition suggesting a significant role of ENT3 transporter in the control of cytokinin level in the roots and the rate of their elongation. Full article
(This article belongs to the Special Issue Local and Systemic Signals of Macronutrient and Water Availability Regulating Root Growth and Development)
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