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Nitrogen
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Nitrogen Signaling in Plants
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Nitrogen Signaling in Plants

A special issue of Nitrogen (ISSN 2504-3129).

Deadline for manuscript submissions: 31 May 2024 | Viewed by 1623

Special Issue Editor

Dr. Juan de Dios Alché Ramírez

E-Mail Website
Guest Editor
Department of Plant Stress, Development and Signaling, Estación Experimental del Zaidín, Profesor Albareda 1, E-18008 Granada, Spain
Interests: ROS/NO metabolism in plants; NO signaling in plant reproductive tissues; nitroproteomics; NO-derived PTM prediction in silico; NO–glutathione interaction in plants; effects of air pollutants on atmospheric pollen grains and spores; NO in allergy and other inflammatory disorders
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nitrogen is a vital component for plant growth and crop production and the subject of numerous studies. Classical topics of analysis regarding nitrogen include its transformation in natural and agricultural systems, availability in plants, plant nitrogen assimilation, and the so-called nitrogen cycle. The importance of signaling events in plants mediated by nitrogen compounds (ammonium, nitrate, nitrite, etc.) and reactive nitrogen species (RNS, mainly nitric oxide (NO)) was discovered in the late 1980s and is highly recognized today. Thus, nitrogen-depending changes occur in root systems, symbiosis nodules, across flowering induction, plant defense and abiotic stresses, and other multiple physiological events. Recognized molecular mechanisms of signaling by nitrogen chemical forms and RNS are multiple and include co-integration of nitrogen and water signals, crosstalk with plant hormones, modulation of the plant microbiome, nitrogen-fixing symbiosis, and triggering of post-translational modifications such as S-nitration and Tyr-nitration, among others.

In spite of the growing body of evidence accumulated so far, we still lack knowledge regarding how nitrogen compounds are sensed and interact with other molecules in order to modulate plant metabolism, shape, architecture, growth, adaptation to stresses, etc. at the different cell types, tissues, and organs of the plants.

The upcoming Special Issue of Nitrogen entitled “Nitrogen Signaling in Plants” is open to different types of contributions (original research manuscripts, reviews, short communications, methods, bioinformatic analyses, etc.) helping to review, clarify, and particularly expand our current knowledge around the topic.

Dr. Juan de Dios Alché Ramírez
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. Nitrogen is an international peer-reviewed open access quarterly 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 1000 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

  • nitrogen compounds
  • reactive nitrogen species (RNS)
  • nitric oxide (NO)
  • post-translational modifications (PTM)
  • signaling
  • molecular interaction
  • crosstalk
  • nitrogen sensing
  • plant responses
  • homeostasis

Published Papers (2 papers)

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Research

13 pages, 1300 KiB  
Article
Effects of Seasonal Variation on Nitrogen Use in Brazilian Cerrado Grass Communities
by Victor Camargo Keller, Erico Fernando Lopes Pereira-Silva, Sergio Tadeu Meirelles and Elisa Hardt
Nitrogen 2024, 5(2), 373-385; https://0-doi-org.brum.beds.ac.uk/10.3390/nitrogen5020024 (registering DOI) - 24 Apr 2024
Viewed by 196
Abstract
In savanna ecosystems, the seasonal effects of nitrogen forms and availability, as well as their utilization by plants, influence the abundance and distribution of herbaceous species in grassland communities. This study examines seasonal effects on nitrogen availability and utilization by native grass species [...] Read more.
In savanna ecosystems, the seasonal effects of nitrogen forms and availability, as well as their utilization by plants, influence the abundance and distribution of herbaceous species in grassland communities. This study examines seasonal effects on nitrogen availability and utilization by native grass species in the Cerrado, a savanna ecosystem in Brazil. Ammonium and nitrate levels in soil, nitrate acquisition and transport, and Nitrate Reductase Activity (NRA) in different plant parts during dry and wet periods were assessed. Results indicated higher soil nitrate availability during the wet period, influenced by precipitation, with leaves showing a higher nitrate content compared to roots. There was seasonal modulation in nitrate reduction, with leaves being the primary site during the dry period and roots during the wet period. The studied grass species exhibited heterogeneous responses to seasonal nitrogen availability, potentially affecting community abundance patterns. Findings suggest that edaphoclimatic seasonality plays a crucial role in nitrogen distribution and utilization capacity by grass plants in the Cerrado, contributing to the understanding of these ecosystems’ ecology. Full article
(This article belongs to the Special Issue Nitrogen Signaling in Plants)
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7 pages, 1656 KiB  
Communication
The Role of Threonine Deaminase/Dehydratase in Winter Dormancy in Sweet Cherry Buds
by Klaus-Peter Götz, Chibueze Ene, Joerg Fettke and Frank-M. Chmielewski
Nitrogen 2023, 4(3), 279-285; https://0-doi-org.brum.beds.ac.uk/10.3390/nitrogen4030020 - 09 Aug 2023
Viewed by 921
Abstract
The determination of the endodormancy release and the beginning of ontogenetic development is a challenge, because these are non-observable stages. Changes in protein activity are important aspects of signal transduction. The conversion of threonine to 2-oxobutanoate is the first step towards isoleucine (Ile) [...] Read more.
The determination of the endodormancy release and the beginning of ontogenetic development is a challenge, because these are non-observable stages. Changes in protein activity are important aspects of signal transduction. The conversion of threonine to 2-oxobutanoate is the first step towards isoleucine (Ile) biosynthesis, which promote growth and development. The reaction is catalyzed by threonine deaminase/dehydratase (TD). This study on TD activity was conducted at the experimental sweet cherry orchard at Berlin-Dahlem. Fresh (FW), dry weight (DW), water content (WC), and the specific TD activity for the cherry cultivars Summit, Karina and Regina were conducted from flower bud samples between October and April. The content of asparagine (Asn), aspartic acid (Asp), Ile, and valine (Val) were exemplarily shown for Summit. In buds of Summit and Karina, the TD activity was one week after the beginning of the ontogenetic development (t1*), significantly higher compared to samplings during endo- and ecodormancy. Such “peak” activity did not occur in the buds of Regina; TD tended for a longer time (day of year, DOY 6–48) to a higher activity, compared to the time DOY 287–350. For the date “one week after t1*”, the upregulation of TD, the markedly increase of the Ile and Val content, and the increase of the water content in the buds, all this enzymatically confirms the estimated start of the ontogenetic development (t1*) in sweet cherry buds. Full article
(This article belongs to the Special Issue Nitrogen Signaling in Plants)
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