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Pavithran S, Murugan M, Mannu J, Yogendra K, Balasubramani V, Sanivarapu H, Harish S, Natesan S. Identification of salivary proteins of the cowpea aphid Aphis craccivora by transcriptome and LC-MS/MS analyses. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2024; 165:104060. [PMID: 38123026 DOI: 10.1016/j.ibmb.2023.104060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 11/29/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023]
Abstract
Aphid salivary proteins mediate the interaction between aphids and their host plants. Moreover, these proteins facilitate digestion, detoxification of secondary metabolites, as well as activation and suppression of plant defenses. The cowpea aphid, Aphis craccivora, is an important sucking pest of leguminous crops worldwide. Although aphid saliva plays an important role in aphid plant interactions, knowledge of the cowpea aphid salivary proteins is limited. In this study, we performed transcriptomic and LC-MS/MS analyses to identify the proteins present in the salivary glands and saliva of A. craccivora. A total of 1,08,275 assembled transcripts were identified in the salivary glands of aphids. Of all these assembled transcripts, 53,714 (49.11%) and 53,577 (49.48%) transcripts showed high similarity to known proteins in the Nr and UniProt databases, respectively. A total of 2159 proteins were predicted as secretory proteins from the salivary gland transcriptome dataset, which contain digestive enzymes, detoxification enzymes, previously known effectors and elicitors, and potential proteins whose functions have yet to be determined. The proteomic analysis of aphid saliva resulted in the identification of 171 proteins. Tissue-specific expression of selected genes using RT-PCR showed that three genes were expressed only in the salivary glands. Overall, our results provide a comprehensive repertoire of cowpea aphid salivary proteins from the salivary gland and saliva, which will be a good resource for future effector functional studies and might also be useful for sustainable aphid management.
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Affiliation(s)
- Shanmugasundram Pavithran
- Department of Agricultural Entomology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Marimuthu Murugan
- Department of Agricultural Entomology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, 641003, India.
| | - Jayakanthan Mannu
- Department of Plant Molecular Biology and Bioinformatics, Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Kalenahalli Yogendra
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, 502324, India
| | - Venkatasamy Balasubramani
- Department of Plant Biotechnology, Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003, India
| | - Hemalatha Sanivarapu
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, 502324, India
| | - Sankarasubramanian Harish
- Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
| | - Senthil Natesan
- Department of Plant Molecular Biology and Bioinformatics, Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore, 641003, India
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Wang X, Zhang Z, Peng W, Huang J, Yan X, Yao W, Ouyang J, Li S. Inositolphosphorylceramide synthases, OsIPCSs, regulate plant height in rice. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 335:111798. [PMID: 37467787 DOI: 10.1016/j.plantsci.2023.111798] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 07/14/2023] [Accepted: 07/16/2023] [Indexed: 07/21/2023]
Abstract
Inositolphosphorylceramide synthase (IPCS) catalyses ceramides and phosphatidylinositol (PI) into inositolphosphorylceramide (IPC), which is involved in the regulation of plant growth and development. A total of three OsIPCS family genes have been identified in rice. However, most of their functions remain unknown. Here, the functions of OsIPCSs were analyzed by CRISPR/Cas9 technology, lipidomics analysis, and transcriptomics analysis. Single-gene mutation of OsIPCSs resulted in dwarf phenotype. Among them, the phenotype of osipcs3 mutant was more severe. Multi-gene mutation of OsIPCS genes led to more severe phenotypes, indicating the additive effects of OsIPCSs. We further determined that a significant decrease in epidermal cell elongation of internode in the mutants. There was a significant decrease in the content of IPC detected in the osipcs2/3 and osipcs1/2/3 mutants. The contents of glycosyl inositol phosphoryl ceramide (GIPC) were also decreased by 20% and 10% in osipcs2/3 and osipcs1/2/3, respectively. The results of RNA-seq showed that numerous DEGs found to be associated with cellular component organization, anatomical structure morphogenesis, and cell growth in the osipcs2, osipcs2/3, and osipcs1/2/3. Taken together, OsIPCSs may be involved in the regulation of plant height through affecting cell growth and sphingolipid metabolism in rice.
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Affiliation(s)
- Xin Wang
- Key Laboratory of Molecular Biology and Genetic Engineering of Jiangxi Province, School of Life Sciences, Nanchang University, Nanchang 330031, China; Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan
| | - Zongfei Zhang
- Key Laboratory of Molecular Biology and Genetic Engineering of Jiangxi Province, School of Life Sciences, Nanchang University, Nanchang 330031, China
| | - Wei Peng
- Key Laboratory of Molecular Biology and Genetic Engineering of Jiangxi Province, School of Life Sciences, Nanchang University, Nanchang 330031, China
| | - Jinqiu Huang
- Key Laboratory of Molecular Biology and Genetic Engineering of Jiangxi Province, School of Life Sciences, Nanchang University, Nanchang 330031, China
| | - Xin Yan
- Key Laboratory of Molecular Biology and Genetic Engineering of Jiangxi Province, School of Life Sciences, Nanchang University, Nanchang 330031, China
| | - Wen Yao
- National Key Laboratory of Wheat and Maize Crop Science, College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, China
| | - Jiexiu Ouyang
- Key Laboratory of Molecular Biology and Genetic Engineering of Jiangxi Province, School of Life Sciences, Nanchang University, Nanchang 330031, China.
| | - Shaobo Li
- Key Laboratory of Molecular Biology and Genetic Engineering of Jiangxi Province, School of Life Sciences, Nanchang University, Nanchang 330031, China.
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Huang LQ, Li PP, Yin J, Li YK, Chen DK, Bao HN, Fan RY, Liu HZ, Yao N. Arabidopsis alkaline ceramidase ACER functions in defense against insect herbivory. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:4954-4967. [PMID: 35436324 DOI: 10.1093/jxb/erac166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 04/16/2022] [Indexed: 06/14/2023]
Abstract
Plant sphingolipids are important membrane components and bioactive molecules in development and defense responses. However, the function of sphingolipids in plant defense, especially against herbivores, is not fully understood. Here, we report that Spodoptera exigua feeding affects sphingolipid metabolism in Arabidopsis, resulting in increased levels of sphingoid long-chain bases, ceramides, and hydroxyceramides. Insect-induced ceramide and hydroxyceramide accumulation is dependent on the jasmonate signaling pathway. Loss of the Arabidopsis alkaline ceramidase ACER increases ceramides and decreases long-chain base levels in plants; in this work, we found that loss of ACER enhances plant resistance to S. exigua and improves response to mechanical wounding. Moreover, acer-1 mutants exhibited more severe root-growth inhibition and higher anthocyanin accumulation than wild-type plants in response to methyl jasmonate treatment, indicating that loss of ACER increases sensitivity to jasmonate and that ACER functions in jasmonate-mediated root growth and secondary metabolism. Transcript levels of ACER were also negatively regulated by jasmonates, and this process involves the transcription factor MYC2. Thus, our findings reveal that ACER is involved in mediating jasmonate-related plant growth and defense and that jasmonates function in regulating the expression of ACER.
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Affiliation(s)
- Li-Qun Huang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Ping-Ping Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Jian Yin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Yong-Kang Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Ding-Kang Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - He-Nan Bao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Rui-Yuan Fan
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Hao-Zhuo Liu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
| | - Nan Yao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, P. R. China
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Groux R, Fouillen L, Mongrand S, Reymond P. Sphingolipids are involved in insect egg-induced cell death in Arabidopsis. PLANT PHYSIOLOGY 2022; 189:2535-2553. [PMID: 35608326 PMCID: PMC9342989 DOI: 10.1093/plphys/kiac242] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 05/04/2022] [Indexed: 05/05/2023]
Abstract
In Brassicaceae, hypersensitive-like programmed cell death (HR-like) is a central component of direct defenses triggered against eggs of the large white butterfly (Pieris brassicae). The signaling pathway leading to HR-like in Arabidopsis (Arabidopsis thaliana) is mainly dependent on salicylic acid (SA) accumulation, but downstream components are unclear. Here, we found that treatment with P. brassicae egg extract (EE) triggered changes in expression of sphingolipid metabolism genes in Arabidopsis and black mustard (Brassica nigra). Disruption of ceramide (Cer) synthase activity led to a significant decrease of EE-induced HR-like whereas SA signaling and reactive oxygen species levels were unchanged, suggesting that Cer are downstream activators of HR-like. Sphingolipid quantifications showed that Cer with C16:0 side chains accumulated in both plant species and this response was largely unchanged in the SA-induction deficient2 (sid2-1) mutant. Finally, we provide genetic evidence that the modification of fatty acyl chains of sphingolipids modulates HR-like. Altogether, these results show that sphingolipids play a key and specific role during insect egg-triggered HR-like.
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Affiliation(s)
- Raphaël Groux
- Department of Plant Molecular Biology, University of Lausanne, CH-1015 Lausanne, Switzerland
| | - Laetitia Fouillen
- Laboratoire de Biogénèse Membranaire, CNRS, UMR 5200, University of Bordeaux, F-33140 Villenave d’Ornon, France
| | - Sébastien Mongrand
- Laboratoire de Biogénèse Membranaire, CNRS, UMR 5200, University of Bordeaux, F-33140 Villenave d’Ornon, France
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Huang LQ, Chen DK, Li PP, Bao HN, Liu HZ, Yin J, Zeng HY, Yang YB, Li YK, Xiao S, Yao N. Jasmonates modulate sphingolipid metabolism and accelerate cell death in the ceramide kinase mutant acd5. PLANT PHYSIOLOGY 2021; 187:1713-1727. [PMID: 34618068 PMCID: PMC8566286 DOI: 10.1093/plphys/kiab362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
Sphingolipids are structural components of the lipid bilayer that acts as signaling molecules in many cellular processes, including cell death. Ceramides, key intermediates in sphingolipid metabolism, are phosphorylated by the ceramide kinase ACCELERATED CELL DEATH5 (ACD5). The loss of ACD5 function leads to ceramide accumulation and spontaneous cell death. Here, we report that the jasmonate (JA) pathway is activated in the Arabidopsis (Arabidopsis thaliana) acd5 mutant and that methyl JA treatment accelerates ceramide accumulation and cell death in acd5. Moreover, the double mutants of acd5 with jasmonate resistant1-1 and coronatine insensitive1-2 exhibited delayed cell death, suggesting that the JA pathway is involved in acd5-mediated cell death. Quantitative sphingolipid profiling of plants treated with methyl JA indicated that JAs influence sphingolipid metabolism by increasing the levels of ceramides and hydroxyceramides, but this pathway is dramatically attenuated by mutations affecting JA pathway proteins. Furthermore, we showed that JAs regulate the expression of genes encoding enzymes in ceramide metabolism. Together, our findings show that JAs accelerate cell death in acd5 mutants, possibly by modulating sphingolipid metabolism and increasing ceramide levels.
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Affiliation(s)
- Li-Qun Huang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Ding-Kang Chen
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Ping-Ping Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - He-Nan Bao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Hao-Zhuo Liu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Jian Yin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Hong-Yun Zeng
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Yu-Bing Yang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Yong-Kang Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Shi Xiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
| | - Nan Yao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, P.R. China
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Qi X, Ogden EL, Bostan H, Sargent DJ, Ward J, Gilbert J, Iorizzo M, Rowland LJ. High-Density Linkage Map Construction and QTL Identification in a Diploid Blueberry Mapping Population. FRONTIERS IN PLANT SCIENCE 2021; 12:692628. [PMID: 34234801 PMCID: PMC8256855 DOI: 10.3389/fpls.2021.692628] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 05/24/2021] [Indexed: 05/11/2023]
Abstract
Genotyping by sequencing approaches have been widely applied in major crops and are now being used in horticultural crops like berries and fruit trees. As the original and largest producer of cultivated blueberry, the United States maintains the most diverse blueberry germplasm resources comprised of many species of different ploidy levels. We previously constructed an interspecific mapping population of diploid blueberry by crossing the parent F1#10 (Vaccinium darrowii Fla4B × diploid V. corymbosum W85-20) with the parent W85-23 (diploid V. corymbosum). Employing the Capture-Seq technology developed by RAPiD Genomics, with an emphasis on probes designed in predicted gene regions, 117 F1 progeny, the two parents, and two grandparents of this population were sequenced, yielding 131.7 Gbp clean sequenced reads. A total of 160,535 single nucleotide polymorphisms (SNPs), referenced to 4,522 blueberry genome sequence scaffolds, were identified and subjected to a parent-dependent sliding window approach to further genotype the population. Recombination breakpoints were determined and marker bins were deduced to construct a high density linkage map. Twelve blueberry linkage groups (LGs) consisting of 17,486 SNP markers were obtained, spanning a total genetic distance of 1,539.4 cM. Among 18 horticultural traits phenotyped in this population, quantitative trait loci (QTLs) that were significant over at least 2 years were identified for chilling requirement, cold hardiness, and fruit quality traits of color, scar size, and firmness. Interestingly, in 1 year, a QTL associated with timing of early bloom, full bloom, petal fall, and early green fruit was identified in the same region harboring the major QTL for chilling requirement. In summary, we report here the first high density bin map of a diploid blueberry mapping population and the identification of several horticulturally important QTLs.
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Affiliation(s)
- Xinpeng Qi
- Genetic Improvement of Fruits and Vegetables Laboratory, Beltsville Agricultural Research Center-West, United States Department of Agriculture, Agricultural Research Service, Beltsville, MD, United States
| | - Elizabeth L. Ogden
- Genetic Improvement of Fruits and Vegetables Laboratory, Beltsville Agricultural Research Center-West, United States Department of Agriculture, Agricultural Research Service, Beltsville, MD, United States
| | - Hamed Bostan
- Department of Horticultural Science, Plants for Human Health Institute, North Carolina State University, Kannapolis, NC, United States
| | | | - Judson Ward
- Driscoll’s Inc., Watsonville, CA, United States
| | | | - Massimo Iorizzo
- Department of Horticultural Science, Plants for Human Health Institute, North Carolina State University, Kannapolis, NC, United States
| | - Lisa J. Rowland
- Genetic Improvement of Fruits and Vegetables Laboratory, Beltsville Agricultural Research Center-West, United States Department of Agriculture, Agricultural Research Service, Beltsville, MD, United States
- *Correspondence: Lisa J. Rowland, ;
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Huby E, Napier JA, Baillieul F, Michaelson LV, Dhondt‐Cordelier S. Sphingolipids: towards an integrated view of metabolism during the plant stress response. THE NEW PHYTOLOGIST 2020; 225:659-670. [PMID: 31211869 PMCID: PMC6973233 DOI: 10.1111/nph.15997] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 06/07/2019] [Indexed: 05/18/2023]
Abstract
Plants exist in an environment of changing abiotic and biotic stresses. They have developed a complex set of strategies to respond to these stresses and over recent years it has become clear that sphingolipids are a key player in these responses. Sphingolipids are not universally present in all three domains of life. Many bacteria and archaea do not produce sphingolipids but they are ubiquitous in eukaryotes and have been intensively studied in yeast and mammals. During the last decade there has been a steadily increasing interest in plant sphingolipids. Plant sphingolipids exhibit structural differences when compared with their mammalian counterparts and it is now clear that they perform some unique functions. Sphingolipids are recognised as critical components of the plant plasma membrane and endomembrane system. Besides being important structural elements of plant membranes, their particular structure contributes to the fluidity and biophysical order. Sphingolipids are also involved in multiple cellular and regulatory processes including vesicle trafficking, plant development and defence. This review will focus on our current knowledge as to the function of sphingolipids during plant stress responses, not only as structural components of biological membranes, but also as signalling mediators.
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Affiliation(s)
- Eloïse Huby
- Résistance Induite et Bioprotection des Plantes EA 4707SFR Condorcet FR CNRS 3417University of Reims Champagne‐ArdenneBP 1039F‐51687Reims Cedex 2France
- Laboratoire de Biophysique Moléculaire aux InterfacesGembloux Agro‐Bio TechUniversité de Liège2 Passage des DéportésB‐5030GemblouxBelgique
| | | | - Fabienne Baillieul
- Résistance Induite et Bioprotection des Plantes EA 4707SFR Condorcet FR CNRS 3417University of Reims Champagne‐ArdenneBP 1039F‐51687Reims Cedex 2France
| | | | - Sandrine Dhondt‐Cordelier
- Résistance Induite et Bioprotection des Plantes EA 4707SFR Condorcet FR CNRS 3417University of Reims Champagne‐ArdenneBP 1039F‐51687Reims Cedex 2France
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Ali U, Li H, Wang X, Guo L. Emerging Roles of Sphingolipid Signaling in Plant Response to Biotic and Abiotic Stresses. MOLECULAR PLANT 2018; 11:1328-1343. [PMID: 30336328 DOI: 10.1016/j.molp.2018.10.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 10/04/2018] [Accepted: 10/09/2018] [Indexed: 05/12/2023]
Abstract
Plant sphingolipids are not only structural components of the plasma membrane and other endomembrane systems but also act as signaling molecules during biotic and abiotic stresses. However, the roles of sphingolipids in plant signal transduction in response to environmental cues are yet to be investigated in detail. In this review, we discuss the signaling roles of sphingolipid metabolites with a focus on plant sphingolipids. We also mention some microbial sphingolipids that initiate signals during their interaction with plants, because of the limited literatures on their plant analogs. The equilibrium of nonphosphorylated and phosphorylated sphingolipid species determine the destiny of plant cells, whereas molecular connections among the enzymes responsible for this equilibrium in a coordinated signaling network are poorly understood. A mechanistic link between the phytohormone-sphingolipid interplay has also not yet been fully understood and many key participants involved in this complex interaction operating under stress conditions await to be identified. Future research is needed to fill these gaps and to better understand the signal pathways of plant sphingolipids and their interplay with other signals in response to environmental stresses.
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Affiliation(s)
- Usman Ali
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Hehuan Li
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Xuemin Wang
- Department of Biology, University of Missouri, St. Louis, MO 63121, USA; Donald Danforth Plant Science Center, St. Louis, MO 63132, USA
| | - Liang Guo
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China.
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