Characterization of Signal Transduction in the Plant Hormone

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Physiology and Metabolism".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 9077

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Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan
Interests: postharvest biology; ethylene signaling; sex determination; molecular farming; auxin transport; disease resistance; plant biotechnology; plant genome editing; plant molecular biology
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Special Issue Information

Dear Colleagues,

This Special Issue aims to collect manuscripts covering the current progress in characterization of signal transduction in plant hormones. The central focus will be research progress on molecular mechanisms of plant hormones including the use of integrative approaches to evaluate the role of signaling proteins, expression patterns, and protein–protein interactions. All manuscripts, including original research articles, reviews, and methodology papers, are highly encouraged.

Dr. Yi-Yin Do
Guest Editor

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Keywords

  • plant hormones
  • signal transduction
  • receptor
  • phosphorylation

Published Papers (2 papers)

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Research

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11 pages, 1678 KiB  
Article
Abscisic Acid Induces Adventitious Rooting in Cucumber (Cucumis sativus L.) by Enhancing Sugar Synthesis
by Changxia Li, Meiling Zhang, Nana Qi, Huwei Liu, Zongxi Zhao, Panpan Huang and Weibiao Liao
Plants 2022, 11(18), 2354; https://doi.org/10.3390/plants11182354 - 9 Sep 2022
Cited by 4 | Viewed by 1642
Abstract
Abscisic acid (ABA) affects many important plant processes, such as seed germination, root elongation and stomatal movement. However, little information is available about the relationship between ABA and sugar synthesis during adventitious root formation. The aim of this study was to evaluate the [...] Read more.
Abscisic acid (ABA) affects many important plant processes, such as seed germination, root elongation and stomatal movement. However, little information is available about the relationship between ABA and sugar synthesis during adventitious root formation. The aim of this study was to evaluate the effect of ABA on adventitious root formation in cucumber and whether the effect of this plant hormone on sugar synthesis could be included as a causative factor for adventitious root development. We determined the contents of glucose, sucrose, starch, total sugar and sugar-related enzymes, including sucrose synthase (SS), sucrose phosphate synthase (SPS), hexokinase (HK) and pyruvate kinase (PK) activities in ABA treatment. We also quantified the relative expression of sucrose or glucose synthesis genes during this process. Increasing ABA concentrations significantly improved adventitious root formation, with the most considerable effect at 0.05 μM. Compared to the control, ABA treatment showed higher glucose, sucrose, starch and total sugar contents. Moreover, ABA treatment increased glucose-6-phosphate (G6P), fructose-6-phosphate (F6P) and glucose-1-phosphate (G1P) contents in cucumber explants during adventitious root development, which was followed by an increase of activities of sucrose-related enzymes SS and SPS, glucose-related enzymes HK and PK. ABA, meanwhile, upregulated the expression levels of sucrose or glucose synthesis-related genes, including CsSuSy1, CsSuSy6, CsHK1 and CsHK3. These results suggest that ABA may promote adventitious root development by increasing the contents of glucose, sucrose, starch, total sugar, G6P, F6P and G1P, the activities of SS, SPS, HK, SPS and the expression levels of CsSuSy1, CsSuSy6, CsHK1 and CsHK3 genes. These findings provide evidence for the physiological role of ABA during adventitious root formation and provide a new understanding of the possible relationship between ABA and sugar synthesis during adventitious rooting in plants. Full article
(This article belongs to the Special Issue Characterization of Signal Transduction in the Plant Hormone)
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Review

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27 pages, 1748 KiB  
Review
Plant Development and Crop Yield: The Role of Gibberellins
by Ricardo Castro-Camba, Conchi Sánchez, Nieves Vidal and Jesús Mª Vielba
Plants 2022, 11(19), 2650; https://doi.org/10.3390/plants11192650 - 9 Oct 2022
Cited by 49 | Viewed by 7033
Abstract
Gibberellins have been classically related to a few key developmental processes, thus being essential for the accurate unfolding of plant genetic programs. After more than a century of research, over one hundred different gibberellins have been described. There is a continuously increasing interest [...] Read more.
Gibberellins have been classically related to a few key developmental processes, thus being essential for the accurate unfolding of plant genetic programs. After more than a century of research, over one hundred different gibberellins have been described. There is a continuously increasing interest in gibberellins research because of their relevant role in the so-called "Green Revolution", as well as their current and possible applications in crop improvement. The functions attributed to gibberellins have been traditionally restricted to the regulation of plant stature, seed germination, and flowering. Nonetheless, research in the last years has shown that these functions extend to many other relevant processes. In this review, the current knowledge on gibberellins homeostasis and mode of action is briefly outlined, while specific attention is focused on the many different responses in which gibberellins take part. Thus, those genes and proteins identified as being involved in the regulation of gibberellin responses in model and non-model species are highlighted. The present review aims to provide a comprehensive picture of the state-of-the-art perception of gibberellins molecular biology and its effects on plant development. This picture might be helpful to enhance our current understanding of gibberellins biology and provide the know-how for the development of more accurate research and breeding programs. Full article
(This article belongs to the Special Issue Characterization of Signal Transduction in the Plant Hormone)
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