1
|
Benjamin JJ, Miras-Moreno B, Araniti F, Salehi H, Bernardo L, Parida A, Lucini L. Proteomics Revealed Distinct Responses to Salinity between the Halophytes Suaeda maritima (L.) Dumort and Salicornia brachiata (Roxb). PLANTS 2020; 9:plants9020227. [PMID: 32050637 PMCID: PMC7076546 DOI: 10.3390/plants9020227] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/03/2020] [Accepted: 02/06/2020] [Indexed: 02/01/2023]
Abstract
Plant resistance to salinity stress is one of the main challenges of agriculture. The comprehension of the molecular and cellular mechanisms involved in plant tolerance to salinity can help to contrast crop losses due to high salt conditions in soil. In this study, Salicornia brachiata and Suaeda maritima, two plants with capacity to adapt to high salinity levels, were investigated at proteome level to highlight the key processes involved in their tolerance to NaCl. With this purpose, plants were treated with 200 mM NaCl as optimal concentration and 500 mM NaCl as a moderate stressing concentration for 14 days. Indeed, 200 mM NaCl did not result in an evident stress condition for both species, although photosynthesis was affected (with a general up accumulation of photosynthesis-related proteins in S. brachiata under salinity). Our findings indicate a coordinated response to salinity in both the halophytes considered, under NaCl conditions. In addition to photosynthesis, heat shock proteins and peroxidase, expansins, signaling processes, and modulation of transcription/translation were affected by salinity. Interestingly, our results suggested distinct mechanisms of tolerance to salinity between the two species considered, with S. brachiata likely having a more efficient mechanism of response to NaCl.
Collapse
Affiliation(s)
- Jenifer Joseph Benjamin
- Department of Plant molecular Biology, MS Swaminathan Research Foundation, III Cross Street, Taramani Institutional Area, Taramani, Chennai 600113, India;
| | - Begoña Miras-Moreno
- Council for Agricultural Research and Economics—Research Centre for Genomics and Bioinformatics (CREA-GB), via San Protaso 302, 29017 Fiorenzuola d’Arda, PC, Italy
- Correspondence: (B.M.-M.); (A.P.)
| | - Fabrizio Araniti
- Department of AGRARIA, University “Mediterranea” of Reggio Calabria, I-89124 Reggio Calabria, Italy;
| | - Hajar Salehi
- Laboratory of Plant Cell Biology, Department of Biology, Bu Ali Sina University, Hamedan 65178-38695, Iran;
| | - Letizia Bernardo
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (L.B.); (L.L.)
| | - Ajay Parida
- Department of Plant molecular Biology, MS Swaminathan Research Foundation, III Cross Street, Taramani Institutional Area, Taramani, Chennai 600113, India;
- Institute of Life Sciences, Department of Biotechnology, Government of India, Bhubaneswar 10, Odisha 751023, India
- Correspondence: (B.M.-M.); (A.P.)
| | - Luigi Lucini
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (L.B.); (L.L.)
| |
Collapse
|
2
|
Hazra A, Dasgupta N, Sengupta C, Das S. MIPS: Functional dynamics in evolutionary pathways of plant kingdom. Genomics 2019; 111:1929-1945. [DOI: 10.1016/j.ygeno.2019.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 11/22/2018] [Accepted: 01/02/2019] [Indexed: 10/27/2022]
|
3
|
Gu L, Jung HJ, Kwak KJ, Dinh SN, Kim YO, Kang H. An RRM-containing mei2-like MCT1 plays a negative role in the seed germination and seedling growth of Arabidopsis thaliana in the presence of ABA. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 109:273-279. [PMID: 27771580 DOI: 10.1016/j.plaphy.2016.10.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/10/2016] [Accepted: 10/12/2016] [Indexed: 05/01/2023]
Abstract
Despite an increasing understanding of the essential role of the Mei2 gene encoding an RNA-binding protein (RBP) in premeiotic DNA synthesis and meiosis in yeasts and animals, the functional roles of the mei2-like genes in plant growth and development are largely unknown. Contrary to other mei2-like RBPs that contain three RNA-recognition motifs (RRMs), the mei2 C-terminal RRM only (MCT) is unique in that it harbors only the last C-terminal RRM. Although MCTs have been implicated to play important roles in plants, their functional roles in stress responses as well as plant growth and development are still unknown. Here, we investigated the expression and functional role of MCT1 (At1g37140) in plant response to abscisic acid (ABA). Confocal analysis of MCT1-GFP-expressing plants revealed that MCT1 is localized to the nucleus. The transcript level of MCT1 was markedly increased upon ABA treatment. Analysis of MCT1-overexpressing transgenic Arabidopsis plants and artificial miRNA-mediated mct1 knockdown mutants demonstrated that MCT1 inhibited seed germination and cotyledon greening of Arabidopsis plants under ABA. The transcript levels of ABA signaling-related genes, such as ABI3, ABI4, and ABI5, were markedly increased in the MCT1-overexpressing transgenic plant. Collectively, these results suggest that ABA-upregulated MCT1 plays a negative role in Arabidopsis seed germination and seedling growth under ABA by modulating the expression of ABA signaling-related genes.
Collapse
Affiliation(s)
- Lili Gu
- Department of Plant Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 500-757, Republic of Korea; Xinjiang Key Laboratory of Grassland Resources and Ecology, College of Grassland and Environmental Sciences, Xinjiang Agricultural University, Urumqi 830052, China
| | - Hyun Ju Jung
- Department of Plant Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 500-757, Republic of Korea
| | - Kyung Jin Kwak
- Department of Plant Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 500-757, Republic of Korea
| | - Sy Nguyen Dinh
- Department of Plant Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 500-757, Republic of Korea
| | - Yeon-Ok Kim
- Department of Plant Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 500-757, Republic of Korea
| | - Hunseung Kang
- Department of Plant Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 500-757, Republic of Korea.
| |
Collapse
|
4
|
Abstract
Although the eukaryotic TOR (target of rapamycin) kinase signalling pathway has emerged as a key player for integrating nutrient-, energy- and stress-related cues with growth and metabolic outputs, relatively little is known of how this ancient regulatory mechanism has been adapted in higher plants. Drawing comparisons with the substantial knowledge base around TOR kinase signalling in fungal and animal systems, functional aspects of this pathway in plants are reviewed. Both conserved and divergent elements are discussed in relation to unique aspects associated with an autotrophic mode of nutrition and adaptive strategies for multicellular development exhibited by plants.
Collapse
|
5
|
Charon C, Bruggeman Q, Thareau V, Henry Y. Gene duplication within the Green Lineage: the case of TEL genes. JOURNAL OF EXPERIMENTAL BOTANY 2012; 63:5061-5077. [PMID: 22865910 DOI: 10.1093/jxb/ers181] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Recent years have witnessed a breathtaking increase in the availability of genome sequence data, providing evidence of the highly duplicate nature of eukaryotic genomes. Plants are exceptional among eukaryotic organisms in that duplicate loci compose a large fraction of their genomes, partly because of the frequent occurrence of polyploidy (or whole-genome duplication) events. Tandem gene duplication and transposition have also contributed to the large number of duplicated genes in plant genomes. Evolutionary analyses allowed the dynamics of duplicate gene evolution to be studied and several models were proposed. It seems that, over time, many duplicated genes were lost and some of those that were retained gained new functions and/or expression patterns (neofunctionalization) or subdivided their functions and/or expression patterns between them (subfunctionalization). Recent studies have provided examples of genes that originated by duplication with successive diversification within plants. In this review, we focused on the TEL (TERMINAL EAR1-like) genes to illustrate such mechanisms. Emerged from the mei2 gene family, these TEL genes are likely to be land plant-specific. Phylogenetic analyses revealed one or two TEL copies per diploid genome. TEL gene degeneration and loss in several Angiosperm species such as in poplar and maize seem to have occurred. In Arabidopsis thaliana, whose genome experienced at least three polyploidy events followed by massive gene loss and genomic reorganization, two TEL genes were retained and two new shorter TEL-like (MCT) genes emerged. Molecular and expression analyses suggest for these genes sub- and neofunctionalization events, but confirmation will come from their functional characterization.
Collapse
Affiliation(s)
- Céline Charon
- Institut de Biologie des Plantes-CNRS (UMR8618), Université Paris-Sud 11, Saclay Plant Sciences, F-91405 Orsay Cedex, France.
| | | | | | | |
Collapse
|
6
|
Vivancos J, Spinner L, Mazubert C, Charlot F, Paquet N, Thareau V, Dron M, Nogué F, Charon C. The function of the RNA-binding protein TEL1 in moss reveals ancient regulatory mechanisms of shoot development. PLANT MOLECULAR BIOLOGY 2012; 78:323-336. [PMID: 22170036 DOI: 10.1007/s11103-011-9867-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Accepted: 11/28/2011] [Indexed: 05/31/2023]
Abstract
The shoot represents the basic body plan in land plants. It consists of a repeated structure composed of stems and leaves. Whereas vascular plants generate a shoot in their diploid phase, non-vascular plants such as mosses form a shoot (called the gametophore) in their haploid generation. The evolution of regulatory mechanisms or genetic networks used in the development of these two kinds of shoots is unclear. TERMINAL EAR1-like genes have been involved in diploid shoot development in vascular plants. Here, we show that disruption of PpTEL1 from the moss Physcomitrella patens, causes reduced protonema growth and gametophore initiation, as well as defects in gametophore development. Leafy shoots formed on ΔTEL1 mutants exhibit shorter stems with more leaves per shoot, suggesting an accelerated leaf initiation (shortened plastochron), a phenotype shared with the Poaceae vascular plants TE1 and PLA2/LHD2 mutants. Moreover, the positive correlation between plastochron length and leaf size observed in ΔTEL1 mutants suggests a conserved compensatory mechanism correlating leaf growth and leaf initiation rate that would minimize overall changes in plant biomass. The RNA-binding protein encoded by PpTEL1 contains two N-terminus RNA-recognition motifs, and a third C-terminus non-canonical RRM, specific to TEL proteins. Removal of the PpTEL1 C-terminus (including this third RRM) or only 16-18 amino acids within it seriously impairs PpTEL1 function, suggesting a critical role for this third RRM. These results show a conserved function of the RNA-binding PpTEL1 protein in the regulation of shoot development, from early ancestors to vascular plants, that depends on the third TEL-specific RRM.
Collapse
Affiliation(s)
- Julien Vivancos
- Institut de Biologie des Plantes-CNRS (UMR8618), Université Paris-Sud 11, Saclay Plant Sciences, 91405 Orsay Cedex, France
| | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Charon C, Moreno AB, Bardou F, Crespi M. Non-protein-coding RNAs and their interacting RNA-binding proteins in the plant cell nucleus. MOLECULAR PLANT 2010; 3:729-739. [PMID: 20603381 DOI: 10.1093/mp/ssq037] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The complex responses of eukaryotic cells to external factors are governed by several transcriptional and post-transcriptional processes. Several of them occur in the nucleus and have been linked to the action of non-protein-coding RNAs (or npcRNAs), both long and small npcRNAs, that recently emerged as major regulators of gene expression. Regulatory npcRNAs acting in the nucleus include silencing-related RNAs, intergenic npcRNAs, natural antisense RNAs, and other aberrant RNAs resulting from the interplay between global transcription and RNA processing activities (such as Dicers and RNA-dependent polymerases). Generally, the resulting npcRNAs exert their regulatory effects through interactions with RNA-binding proteins (or RBPs) within ribonucleoprotein particles (or RNPs). A large group of RBPs are implicated in the silencing machinery through small interfering RNAs (siRNAs) and their localization suggests that several act in the nucleus to trigger epigenetic and chromatin changes at a whole-genome scale. Other nuclear RBPs interact with npcRNAs and change their localization. In the fission yeast, the RNA-binding Mei2p protein, playing pivotal roles in meiosis, interact with a meiotic npcRNA involved in its nuclear re-localization. Related processes have been identified in plants and the ENOD40 npcRNA was shown to re-localize a nuclear-speckle RBP from the nucleus to the cytoplasm in Medicago truncatula. Plant RBPs have been also implicated in RNA-mediated chromatin silencing in the FLC locus through interaction with specific antisense transcripts. In this review, we discuss the interactions between RBPs and npcRNAs in the context of nuclear-related processes and their implication in plant development and stress responses. We propose that these interactions may add a regulatory layer that modulates the interactions between the nuclear genome and the environment and, consequently, control plant developmental plasticity.
Collapse
Affiliation(s)
- Celine Charon
- University Paris-Sud, Institut de Biologie des Plantes, UMR8618, Orsay Cedex, F-91405, France
| | | | | | | |
Collapse
|