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Metabolism and Stress in Plants
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Metabolism and Stress in Plants

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

Deadline for manuscript submissions: 31 May 2024 | Viewed by 5146

Special Issue Editor

Prof. Dr. Anis Limami

E-Mail Website
Guest Editor
1. Department of Biology, University of Angers, 2 Bd Lavoisier, 49045 Angers, France
2. INRAE, Institut de Recherche en Horticulture et Semences (IRHS), 42 rue Georges Morel, CEDEX, 49071 Beaucouzé, France
Interests: nitrate transporters; nitrate signaling; nitrogen and carbon metabolisms; low oxygen stress (waterlogging); legumes; seedling establishment; seedlings – microbiome interactions; root exudates; isotope (15N, 13C) labeling; metabolome

Special Issue Information

Dear Colleagues,

In both their natural habitats and cultivated fields, plants have to cope with various suboptimal environmental cues that cause either biotic or abiotic stresses, which have a negative impact on their growth and development. In this Special Issue, “Metabolism and Stress in Plants”, we will focus on metabolic adjustments developed by plants to fight against biotic and abiotic stress-induced damaging effects, which otherwise would severely alter their physiology, and limit their growth and development.

The perception and transduction of stress signals through pathways involving hormones and signaling molecules lead to characteristic changes in primary and secondary metabolisms. In general, these changes lead to the adaptation of carbon (photosynthesis and respiration), nitrogen and other nutrients’ metabolism, such as sulfur and phosphate. Metabolism changes also lead to the synthesis of defense metabolites in the case of biotic stress and protective metabolites that act against the damaging effects of environmental stress, such as drought, waterlogging (flooding), low/high temperatures, shortages in mineral nutrients and excesses of heavy metals.

Original research or review articles that update and increase our knowledge on either metabolic changes that occur under stress conditions or how these changes contribute to plants’ defense and adaptation are welcome in this Special Issue.

Prof. Dr. Anis Limami
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. Plants 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.

Published Papers (5 papers)

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Research

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18 pages, 5205 KiB  
Article
Genome-Wide Identification and Expression Analysis of Sucrose Nonfermenting 1-Related Protein Kinase (SnRK) Genes in Salvia miltiorrhiza in Response to Hormone
by Tingyao Liu, Yinkai Yang, Ruiyan Zhu, Qichao Wang, Yao Wang, Min Shi and Guoyin Kai
Plants 2024, 13(7), 994; https://0-doi-org.brum.beds.ac.uk/10.3390/plants13070994 - 30 Mar 2024
Viewed by 554
Abstract
The SnRK gene family is the chief component of plant stress resistance and metabolism through activating the phosphorylation of downstream proteins. S. miltiorrhiza is widely used for the treatment of cardiovascular diseases in Asian countries. However, information about the SnRK gene family of [...] Read more.
The SnRK gene family is the chief component of plant stress resistance and metabolism through activating the phosphorylation of downstream proteins. S. miltiorrhiza is widely used for the treatment of cardiovascular diseases in Asian countries. However, information about the SnRK gene family of S. miltiorrhiza is not clear. The aim of this study is to comprehensively analyze the SnRK gene family of S. miltiorrhiza and its response to phytohormone. Here, 33 SmSnRK genes were identified and divided into three subfamilies (SmSnRK1, SmSnRK2 and SmSnRK3) according to phylogenetic analysis and domain. SmSnRK genes within same subgroup shared similar protein motif composition and were unevenly distributed on eight chromosomes of S. miltiorrhiza. Cis-acting element analysis showed that the promoter of SmSnRK genes was enriched with ABRE motifs. Expression pattern analysis revealed that SmSnRK genes were preferentially expressed in leaves and roots. Most SmSnRK genes were induced by ABA and MeJA treatment. Correlation analysis showed that SmSnRK3.15 and SmSnRK3.18 might positively regulate tanshinone biosynthesis; SmSnRK3.10 and SmSnRK3.12 might positively regulate salvianolic acid biosynthesis. RNAi-based silencing of SmSnRK2.6 down-regulated the biosynthesis of tanshinones and biosynthetic genes expression. An in vitro phosphorylation assay verified that SmSnRK2.2 interacted with and phosphorylated SmAREB1. These findings will provide a valuable basis for the functional characterization of SmSnRK genes and quality improvement of S. miltiorrhiza. Full article
(This article belongs to the Special Issue Metabolism and Stress in Plants)
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20 pages, 10850 KiB  
Article
Low Nitrogen Input Mitigates Quantitative but Not Qualitative Reconfiguration of Leaf Primary Metabolism in Brassica napus L. Subjected to Drought and Rehydration
by Benjamin Albert, Younès Dellero, Laurent Leport, Mathieu Aubert, Alain Bouchereau and Françoise Le Cahérec
Plants 2024, 13(7), 969; https://0-doi-org.brum.beds.ac.uk/10.3390/plants13070969 - 27 Mar 2024
Viewed by 512
Abstract
In the context of climate change and the reduction of mineral nitrogen (N) inputs applied to the field, winter oilseed rape (WOSR) will have to cope with low-N conditions combined with water limitation periods. Since these stresses can significantly reduce seed yield and [...] Read more.
In the context of climate change and the reduction of mineral nitrogen (N) inputs applied to the field, winter oilseed rape (WOSR) will have to cope with low-N conditions combined with water limitation periods. Since these stresses can significantly reduce seed yield and seed quality, maintaining WOSR productivity under a wide range of growth conditions represents a major goal for crop improvement. N metabolism plays a pivotal role during the metabolic acclimation to drought in Brassica species by supporting the accumulation of osmoprotective compounds and the source-to-sink remobilization of nutrients. Thus, N deficiency could have detrimental effects on the acclimation of WOSR to drought. Here, we took advantage of a previously established experiment to evaluate the metabolic acclimation of WOSR during 14 days of drought, followed by 8 days of rehydration under high- or low-N fertilization regimes. For this purpose, we selected three leaf ranks exhibiting contrasted sink/source status to perform absolute quantification of plant central metabolites. Besides the well-described accumulation of proline, we observed contrasted accumulations of some “respiratory” amino acids (branched-chain amino acids, lysineand tyrosine) in response to drought under high- and low-N conditions. Drought also induced an increase in sucrose content in sink leaves combined with a decrease in source leaves. N deficiency strongly decreased the levels of major amino acids and subsequently the metabolic response to drought. The drought-rehydration sequence identified proline, phenylalanine, and tryptophan as valuable metabolic indicators of WOSR water status for sink leaves. The results were discussed with respect to the metabolic origin of sucrose and some amino acids in sink leaves and the impact of drought on source-to-sink remobilization processes depending on N nutrition status. Overall, this study identified major metabolic signatures reflecting a similar response of oilseed rape to drought under low- and high-N conditions. Full article
(This article belongs to the Special Issue Metabolism and Stress in Plants)
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14 pages, 2324 KiB  
Article
The Key Role of Glutamate Dehydrogenase 2 (GDH2) in the Control of Kernel Production in Maize (Zea mays L.)
by Thérèse Tercé-Laforgue, Jérémy Lothier, Anis M. Limami, Jacques Rouster, Peter J. Lea and Bertrand Hirel
Plants 2023, 12(14), 2612; https://0-doi-org.brum.beds.ac.uk/10.3390/plants12142612 - 11 Jul 2023
Viewed by 1068
Abstract
The agronomic potential of glutamate dehydrogenase 2 (GDH2) in maize kernel production was investigated by examining the impact of a mutation on the corresponding gene. Mu-insertion homozygous and heterozygous mutant lines lacking GDH2 activity were isolated and characterized at the biochemical, physiological [...] Read more.
The agronomic potential of glutamate dehydrogenase 2 (GDH2) in maize kernel production was investigated by examining the impact of a mutation on the corresponding gene. Mu-insertion homozygous and heterozygous mutant lines lacking GDH2 activity were isolated and characterized at the biochemical, physiological and agronomic levels. In comparison to the wild type and to the homozygous ghd2 mutants, the heterozygous gdh2 mutant plants were characterized by a decrease in the root amino acid content, whereas in the leaves an increase of a number of phenolic compounds was observed. On average, a 30 to 40% increase in kernel yield was obtained only in the heterozygous gdh2 mutant lines when plants were grown in the field over two years. The importance of GDH2 in the control of plant productivity is discussed in relation to the physiological impact of the mutation on amino acid content, with primary carbon metabolism mostly occurring in the roots and secondary metabolism occurring in the leaves. Full article
(This article belongs to the Special Issue Metabolism and Stress in Plants)
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12 pages, 3106 KiB  
Article
Comparative Metabolomic Analysis Reveals the Role of OsHPL1 in the Cold-Induced Metabolic Changes in Rice
by Ziwei Wu, Zhiyu Guo, Kemiao Wang, Rui Wang and Chuanying Fang
Plants 2023, 12(10), 2032; https://0-doi-org.brum.beds.ac.uk/10.3390/plants12102032 - 19 May 2023
Cited by 11 | Viewed by 1291
Abstract
Cytochrome P450 (CYP74) family members participate in the generation of oxylipins and play essential roles in plant adaptation. However, the metabolic reprogramming mediated by CYP74s under cold stress remains largely unexplored. Herein, we report how cold-triggered OsHPL1, a member of [...] Read more.
Cytochrome P450 (CYP74) family members participate in the generation of oxylipins and play essential roles in plant adaptation. However, the metabolic reprogramming mediated by CYP74s under cold stress remains largely unexplored. Herein, we report how cold-triggered OsHPL1, a member of the CYP74 family, modulates rice metabolism. Cold stress significantly induced the expression of OsHPL1 and the accumulation of OPDA (12-oxo-phytodienoic acid) and jasmonates in the wild-type (WT) plants. The absence of OsHPL1 attenuates OPDA accumulation to a low temperature. Then, we performed a widely targeted metabolomics study covering 597 structurally annotated compounds. In the WT and hpl1 plants, cold stress remodeled the metabolism of lipids and amino acids. Although the WT and hpl1 mutants shared over one hundred cold-affected differentially accumulated metabolites (DAMs), some displayed distinct cold-responding patterns. Furthermore, we identified 114 and 56 cold-responding DAMs, specifically in the WT and hpl1 mutants. In conclusion, our work characterized cold-triggered metabolic rewiring and the metabolic role of OsHPL1 in rice. Full article
(This article belongs to the Special Issue Metabolism and Stress in Plants)
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Review

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13 pages, 1559 KiB  
Review
NPF and NRT2 from Pisum sativum Potentially Involved in Nodule Functioning: Lessons from Medicago truncatula and Lotus japonicus
by Marie-Christine Morère-Le Paven, Thibault Clochard and Anis M. Limami
Plants 2024, 13(2), 322; https://0-doi-org.brum.beds.ac.uk/10.3390/plants13020322 - 22 Jan 2024
Viewed by 917
Abstract
In addition to absorbing nitrogen from the soil, legumes have the ability to use atmospheric N2 through symbiotic nitrogen fixation. Therefore, legumes have developed mechanisms regulating nodulation in response to the amount of nitrate in the soil; in the presence of high [...] Read more.
In addition to absorbing nitrogen from the soil, legumes have the ability to use atmospheric N2 through symbiotic nitrogen fixation. Therefore, legumes have developed mechanisms regulating nodulation in response to the amount of nitrate in the soil; in the presence of high nitrate concentrations, nodulation is inhibited, while low nitrate concentrations stimulate nodulation and nitrogen fixation. This allows the legumes to switch from soil nitrogen acquisition to symbiotic nitrogen fixation. Recently, particular interest has been given to the nitrate transporters, such as Nitrate Transporter1/Peptide transporter Family (NPF) and Nitrate Transporter 2 (NRT2), having a role in the functioning of nodules. Nitrate transporters of the two model plants, Lotus japonicus and Medicago truncatula, shown to have a positive and/or a negative role in nodule functioning depending on nitrate concentration, are presented in this article. In particular, the following transporters were thoroughly studied: (i) members of NPF transporters family, such as LjNPF8.6 and LjNPF3.1 in L. japonicus and MtNPF1.7 and MtNPF7.6 in M. truncatula, and (ii) members of NRT2 transporters family, such as LjNRT2.4 and LjNRT2.1 in L. japonicus and MtNRT2.1 in M. truncatula. Also, by exploiting available genomic and transcriptomic data in the literature, we have identified the complete PsNPF family in Pisum sativum (69 sequences previously described and 21 new that we have annotated) and putative nitrate transporters candidate for playing a role in nodule functioning in P. sativum. Full article
(This article belongs to the Special Issue Metabolism and Stress in Plants)
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