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Cells
Special Issues
Hormonal Signaling in Plants and the Changing Environment
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Hormonal Signaling in Plants and the Changing Environment

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 January 2021) | Viewed by 25794

Special Issue Editor

Prof. Henri Batoko

E-Mail Website
Guest Editor
Louvain Institute of Biomolecular Science and Technology, University of Louvain, 1348 Louvain-la-Neuve, Belgium
Interests: cell biology; autophagy; membrane trafficking; stress physiology; hormonal signaling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The brisk effects of climate change, including an elevated atmospheric temperature and the evolution of pathogenic threats, are major challenges for agriculture and the food industry. Plant growth, development, and their response to environmental stimuli depend, in large part, to hormone metabolism, perception, and signaling. Classically, plant hormones are categorized for their involvement in either plant development or stress response. However, important findings during the last decade have provided ample examples of synergistic or antagonistic plant responses to environmental stimuli, orchestrated by plant hormones and signaling peptides. How plant hormones and signaling peptides mediate cell–cell communication, and genomic, metabolic, and developmental plasticity is at the nexus of plant research towards robustness and adaptation to climate change. Methodological advances in molecular, biochemical, and imaging techniques are providing an in-depth mechanistic understanding. Moreover, the translational aspect of these studies is also very exciting in terms of ensuring global food security.

This Special Issue aims to summarize the recent developments contributing toward advancing the frontiers, how different phytohormones contribute to adaptation against abiotic/biotic stress in a changing environment.

We look forward to your contribution in the form of original research or a review article.

Prof. Henri Batoko
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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

  • phytohormones
  • environmental cues
  • signaling cross-talk
  • biotic and abiotic stress
  • climate change
  • plant adaptation
  • food security

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Published Papers (4 papers)

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Research

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17 pages, 8350 KiB  
Article
Nitrogen Deficiency-Induced Decrease in Cytokinins Content Promotes Rice Seminal Root Growth by Promoting Root Meristem Cell Proliferation and Cell Elongation
by Qi Wang, Yanchun Zhu, Xiao Zou, Fengfeng Li, Jialiang Zhang, Ziyi Kang, Xuefei Li, Changxi Yin and Yongjun Lin
Cells 2020, 9(4), 916; https://doi.org/10.3390/cells9040916 - 9 Apr 2020
Cited by 28 | Viewed by 4501
Abstract
Rice (Oryza sativa L.) seedlings grown under nitrogen (N) deficiency conditions show a foraging response characterized by increased root length. However, the mechanism underlying this developmental plasticity is still poorly understood. In this study, the mechanism by which N deficiency influences rice [...] Read more.
Rice (Oryza sativa L.) seedlings grown under nitrogen (N) deficiency conditions show a foraging response characterized by increased root length. However, the mechanism underlying this developmental plasticity is still poorly understood. In this study, the mechanism by which N deficiency influences rice seminal root growth was investigated. The results demonstrated that compared with the control (1 mM N) treatment, N deficiency treatments strongly promoted seminal root growth. However, the N deficiency-induced growth was negated by the application of zeatin, which is a type of cytokinin (CK). Moreover, the promotion of rice seminal root growth was correlated with a decrease in CK content, which was due to the N deficiency-mediated inhibition of CK biosynthesis through the down-regulation of CK biosynthesis genes and an enhancement of CK degradation through the up-regulation of CK degradation genes. In addition, the N deficiency-induced decrease in CK content not only enhanced the root meristem cell proliferation rate by increasing the meristem cell number via the down-regulation of OsIAA3 and up-regulation of root-expressed OsPLTs, but also promoted root cell elongation by up-regulating cell elongation-related genes, including root-specific OsXTHs and OsEXPs. Taken together, our data suggest that an N deficiency-induced decrease in CK content promotes the seminal root growth of rice seedlings by promoting root meristem cell proliferation and cell elongation. Full article
(This article belongs to the Special Issue Hormonal Signaling in Plants and the Changing Environment)
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Review

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40 pages, 3400 KiB  
Review
Interplay between Hormones and Several Abiotic Stress Conditions on Arabidopsis thaliana Primary Root Development
by Brenda Anabel López-Ruiz, Estephania Zluhan-Martínez, María de la Paz Sánchez, Elena R. Álvarez-Buylla and Adriana Garay-Arroyo
Cells 2020, 9(12), 2576; https://doi.org/10.3390/cells9122576 - 1 Dec 2020
Cited by 24 | Viewed by 5838
Abstract
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 [...] Read more.
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. Full article
(This article belongs to the Special Issue Hormonal Signaling in Plants and the Changing Environment)
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10 pages, 2236 KiB  
Review
Cytokinin and Ethylene Cell Signaling Pathways from Prokaryotes to Eukaryotes
by Baptiste Bidon, Samar Kabbara, Vincent Courdavault, Gaëlle Glévarec, Audrey Oudin, François Héricourt, Sabine Carpin, Lukáš Spíchal, Brad M. Binder, J. Mark Cock and Nicolas Papon
Cells 2020, 9(11), 2526; https://doi.org/10.3390/cells9112526 - 23 Nov 2020
Cited by 16 | Viewed by 4817
Abstract
Cytokinins (CKs) and ethylene (ET) are among the most ancient organic chemicals on Earth. A wide range of organisms including plants, algae, fungi, amoebae, and bacteria use these substances as signaling molecules to regulate cellular processes. Because of their ancestral origin and ubiquitous [...] Read more.
Cytokinins (CKs) and ethylene (ET) are among the most ancient organic chemicals on Earth. A wide range of organisms including plants, algae, fungi, amoebae, and bacteria use these substances as signaling molecules to regulate cellular processes. Because of their ancestral origin and ubiquitous occurrence, CKs and ET are also considered to be ideal molecules for inter-kingdom communication. Their signal transduction pathways were first historically deciphered in plants and are related to the two-component systems, using histidine kinases as primary sensors. Paradoxically, although CKs and ET serve as signaling molecules in different kingdoms, it has been supposed for a long time that the canonical CK and ET signaling pathways are restricted to terrestrial plants. These considerations have now been called into question following the identification over recent years of genes encoding CK and ET receptor homologs in many other lineages within the tree of life. These advances shed new light on the dissemination and evolution of these hormones as both intra- and inter-specific communication molecules in prokaryotic and eukaryotic organisms. Full article
(This article belongs to the Special Issue Hormonal Signaling in Plants and the Changing Environment)
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41 pages, 2830 KiB  
Review
NADPH Oxidases: The Vital Performers and Center Hubs during Plant Growth and Signaling
by Chun-Hong Hu, Peng-Qi Wang, Peng-Peng Zhang, Xiu-Min Nie, Bin-Bin Li, Li Tai, Wen-Ting Liu, Wen-Qiang Li and Kun-Ming Chen
Cells 2020, 9(2), 437; https://doi.org/10.3390/cells9020437 - 13 Feb 2020
Cited by 112 | Viewed by 9726
Abstract
NADPH oxidases (NOXs), mostly known as respiratory burst oxidase homologs (RBOHs), are the key producers of reactive oxygen species (ROS) in plants. A lot of literature has addressed ROS signaling in plant development regulation and stress responses as well as on the enzyme’s [...] Read more.
NADPH oxidases (NOXs), mostly known as respiratory burst oxidase homologs (RBOHs), are the key producers of reactive oxygen species (ROS) in plants. A lot of literature has addressed ROS signaling in plant development regulation and stress responses as well as on the enzyme’s structure, evolution, function, regulation and associated mechanisms, manifesting the role of NOXs/RBOHs as the vital performers and center hubs during plant growth and signaling. This review focuses on recent advances of NOXs/RBOHs on cell growth, hormone interaction, calcium signaling, abiotic stress responses, and immunity. Several primary particles, including Ca2+, CDPKs, BIK1, ROPs/RACs, CERK, FER, ANX, SnRK and SIK1-mediated regulatory mechanisms, are fully summarized to illustrate the signaling behavior of NOXs/RBOHs and their sophisticated and dexterous crosstalks. Diverse expression and activation regulation models endow NOXs/RBOHs powerful and versatile functions in plants to maintain innate immune homeostasis and development integrity. NOXs/RBOHs and their related regulatory items are the ideal targets for crop improvement in both yield and quality during agricultural practices. Full article
(This article belongs to the Special Issue Hormonal Signaling in Plants and the Changing Environment)
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