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Baldé A, Neves D, García-Breijo FJ, Pais MS, Cravador A. De novo assembly of Phlomis purpurea after challenging with Phytophthora cinnamomi. BMC Genomics 2017; 18:700. [PMID: 28877668 PMCID: PMC5585901 DOI: 10.1186/s12864-017-4042-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 08/09/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Phlomis plants are a source of biological active substances with potential applications in the control of phytopathogens. Phlomis purpurea (Lamiaceae) is autochthonous of southern Iberian Peninsula and Morocco and was found to be resistant to Phytophthora cinnamomi. Phlomis purpurea has revealed antagonistic effect in the rhizosphere of Quercus suber and Q. ilex against P. cinnamomi. Phlomis purpurea roots produce bioactive compounds exhibiting antitumor and anti-Phytophthora activities with potential to protect susceptible plants. Although these important capacities of P. purpurea have been demonstrated, there is no transcriptomic or genomic information available in public databases that could bring insights on the genes underlying this anti-oomycete activity. RESULTS Using Illumina technology we obtained a de novo assembly of P. purpurea transcriptome and differential transcript abundance to identify putative defence related genes in challenged versus non-challenged plants. A total of 1,272,600,000 reads from 18 cDNA libraries were merged and assembled into 215,739 transcript contigs. BLASTX alignment to Nr NCBI database identified 124,386 unique annotated transcripts (57.7%) with significant hits. Functional annotation identified 83,550 out of 124,386 unique transcripts, which were mapped to 141 pathways. 39% of unigenes were assigned GO terms. Their functions cover biological processes, cellular component and molecular functions. Genes associated with response to stimuli, cellular and primary metabolic processes, catalytic and transporter functions were among those identified. Differential transcript abundance analysis using DESeq revealed significant differences among libraries depending on post-challenge times. Comparative cyto-histological studies of P. purpurea roots challenged with P. cinnamomi zoospores and controls revealed specific morphological features (exodermal strips and epi-cuticular layer), that may provide a constitutive efficient barrier against pathogen penetration. Genes involved in cutin biosynthesis and in exodermal Casparian strips formation were up-regulated. CONCLUSIONS The de novo assembly of transcriptome using short reads for a non-model plant, P. purpurea, revealed many unique transcripts useful for further gene expression, biological function, genomics and functional genomics studies. The data presented suggest a combination of a constitutive resistance and an increased transcriptional response from P. purpurea when challenged with the pathogen. This knowledge opens new perspectives for the understanding of defence responses underlying pathogenic oomycete/plant interaction upon challenge with P. cinnamomi.
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Affiliation(s)
- Aladje Baldé
- Plant Molecular Biology and Biotechnology Lab, Center for Biosystems (BioSys), Functional and Integrative Genomics (BioFIG), Edifício C2, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal
- Present Address: Universidade Jean Piaget, Bissau, Guinea-Bissau
| | - Dina Neves
- Faculdade de Ciências e Tecnologia, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Francisco J. García-Breijo
- Departamento de Ecosistemas Agroforestales, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain
| | - Maria Salomé Pais
- Plant Molecular Biology and Biotechnology Lab, Center for Biosystems (BioSys), Functional and Integrative Genomics (BioFIG), Edifício C2, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal
| | - Alfredo Cravador
- Centre for Mediterranean Bioresources and Food (MeditBio), FCT, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
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202
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Pineau E, Xu L, Renault H, Trolet A, Navrot N, Ullmann P, Légeret B, Verdier G, Beisson F, Pinot F. Arabidopsis thaliana EPOXIDE HYDROLASE1 (AtEH1) is a cytosolic epoxide hydrolase involved in the synthesis of poly-hydroxylated cutin monomers. THE NEW PHYTOLOGIST 2017; 215:173-186. [PMID: 28497532 DOI: 10.1111/nph.14590] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 03/22/2017] [Indexed: 06/07/2023]
Abstract
Epoxide hydrolases (EHs) are present in all living organisms. They have been extensively characterized in mammals; however, their biological functions in plants have not been demonstrated. Based on in silico analysis, we identified AtEH1 (At3g05600), a putative Arabidopsis thaliana epoxide hydrolase possibly involved in cutin monomer synthesis. We expressed AtEH1 in yeast and studied its localization in vivo. We also analyzed the composition of cutin from A. thaliana lines in which this gene was knocked out. Incubation of recombinant AtEH1 with epoxy fatty acids confirmed its capacity to hydrolyze epoxides of C18 fatty acids into vicinal diols. Transfection of Nicotiana benthamiana leaves with constructs expressing AtEH1 fused to enhanced green fluorescent protein (EGFP) indicated that AtEH1 is localized in the cytosol. Analysis of cutin monomers in loss-of-function Ateh1-1 and Ateh1-2 mutants showed an accumulation of 18-hydroxy-9,10-epoxyoctadecenoic acid and a concomitant decrease in corresponding vicinal diols in leaf and seed cutin. Compared with wild-type seeds, Ateh1 seeds showed delayed germination under osmotic stress conditions and increased seed coat permeability to tetrazolium red. This work reports a physiological role for a plant EH and identifies AtEH1 as a new member of the complex machinery involved in cutin synthesis.
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Affiliation(s)
- Emmanuelle Pineau
- Université de Strasbourg, CNRS, IBMP UPR 2357, F-67000, Strasbourg, France
| | - Lin Xu
- Institute of Biosciences and Biotechnologies, CEA-CNRS-Aix Marseille Université, UMR 7265, LB3M, F-13108, Cadarache, France
| | - Hugues Renault
- Université de Strasbourg, CNRS, IBMP UPR 2357, F-67000, Strasbourg, France
| | - Adrien Trolet
- Université de Strasbourg, CNRS, IBMP UPR 2357, F-67000, Strasbourg, France
| | - Nicolas Navrot
- Université de Strasbourg, CNRS, IBMP UPR 2357, F-67000, Strasbourg, France
| | - Pascaline Ullmann
- Université de Strasbourg, CNRS, IBMP UPR 2357, F-67000, Strasbourg, France
| | - Bertrand Légeret
- Institute of Biosciences and Biotechnologies, CEA-CNRS-Aix Marseille Université, UMR 7265, LB3M, F-13108, Cadarache, France
| | - Gaëtan Verdier
- Université de Strasbourg, CNRS, IBMP UPR 2357, F-67000, Strasbourg, France
| | - Fred Beisson
- Institute of Biosciences and Biotechnologies, CEA-CNRS-Aix Marseille Université, UMR 7265, LB3M, F-13108, Cadarache, France
| | - Franck Pinot
- Université de Strasbourg, CNRS, IBMP UPR 2357, F-67000, Strasbourg, France
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203
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Lee HG, Kim J, Suh MC, Seo PJ. The MIEL1 E3 Ubiquitin Ligase Negatively Regulates Cuticular Wax Biosynthesis in Arabidopsis Stems. PLANT & CELL PHYSIOLOGY 2017; 58:1249-1259. [PMID: 28838126 DOI: 10.1093/pcp/pcx065] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 04/24/2017] [Indexed: 05/08/2023]
Abstract
Cuticular wax is an important hydrophobic layer that covers the plant aerial surface. Cuticular wax biosynthesis is shaped by multiple layers of regulation. In particular, a pair of R2R3-type MYB transcription factors, MYB96 and MYB30, are known to be the main participants in cuticular wax accumulation. Here, we report that the MYB30-INTERACTING E3 LIGASE 1 (MIEL1) E3 ubiquitin ligase controls the protein stability of the two MYB transcription factors and thereby wax biosynthesis in Arabidopsis. MIEL1-deficient miel1 mutants exhibit increased wax accumulation in stems, with up-regulation of wax biosynthetic genes targeted by MYB96 and MYB30. Genetic analysis reveals that wax accumulation of the miel1 mutant is compromised by myb96 or myb30 mutation, but MYB96 is mainly epistatic to MIEL1, playing a predominant role in cuticular wax deposition. These observations indicate that the MIEL1-MYB96 module is important for balanced cuticular wax biosynthesis in developing inflorescence stems.
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Affiliation(s)
- Hong Gil Lee
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Juyoung Kim
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Mi Chung Suh
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Pil Joon Seo
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
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204
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Haslam TM, Gerelle WK, Graham SW, Kunst L. The Unique Role of the ECERIFERUM2-LIKE Clade of the BAHD Acyltransferase Superfamily in Cuticular Wax Metabolism. PLANTS (BASEL, SWITZERLAND) 2017; 6:E23. [PMID: 28608803 PMCID: PMC5489795 DOI: 10.3390/plants6020023] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Revised: 05/27/2017] [Accepted: 06/01/2017] [Indexed: 11/16/2022]
Abstract
The elongation of very-long-chain fatty acids is a conserved process used for the production of many metabolites, including plant cuticular waxes. The elongation of precursors of the most abundant cuticular wax components of some plants, however, is unique in requiring ECERIFERUM2-LIKE (CER2-LIKE) proteins. CER2-LIKEs are a clade within the BAHD superfamily of acyltransferases. They are known to be required for cuticular wax production in both Arabidopsis and maize based on mutant studies. Heterologous expression of Arabidopsis and rice CER2-LIKEs in Saccharomyces cerevisiae has demonstrated that they modify the chain-length specificity of elongation when paired with particular condensing enzymes. Despite sequence homology, CER2-LIKEs are distinct from the BAHD superfamily in that they do not appear to use acyl transfer activity to fulfill their biological function. Here, we review the discovery and characterization of CER2-LIKEs, propose several models to explain their function, and explore the importance of CER2-LIKE proteins for the evolution of plant cuticles.
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Affiliation(s)
- Tegan M Haslam
- Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
| | - Wesley K Gerelle
- Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
| | - Sean W Graham
- Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
| | - Ljerka Kunst
- Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.
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205
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Larkum AWD, Davey PA, Kuo J, Ralph PJ, Raven JA. Carbon-concentrating mechanisms in seagrasses. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:3773-3784. [PMID: 28911056 DOI: 10.1093/jxb/erx206] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Seagrasses are unique angiosperms that carry out growth and reproduction submerged in seawater. They occur in at least three families of the Alismatales. All have chloroplasts mainly in the cells of the epidermis. Living in seawater, the supply of inorganic carbon (Ci) to the chloroplasts is diffusion limited, especially under unstirred conditions. Therefore, the supply of CO2 and bicarbonate across the diffusive boundary layer on the outer side of the epidermis is often a limiting factor. Here we discuss the evidence for mechanisms that enhance the uptake of Ci into the epidermal cells. Since bicarbonate is plentiful in seawater, a bicarbonate pump might be expected; however, the evidence for such a pump is not strongly supported. There is evidence for a carbonic anhydrase outside the outer plasmalemma. This, together with evidence for an outward proton pump, suggests the possibility that local acidification leads to enhanced concentrations of CO2 adjacent to the outer tangential epidermal walls, which enhances the uptake of CO2, and this could be followed by a carbon-concentrating mechanism (CCM) in the cytoplasm and/or chloroplasts. The lines of evidence for such an epidermal CCM are discussed, including evidence for special 'transfer cells' in some but not all seagrass leaves in the tangential inner walls of the epidermal cells. It is concluded that seagrasses have a CCM but that the case for concentration of CO2 at the site of Rubisco carboxylation is not proven.
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Affiliation(s)
- Anthony William D Larkum
- Plant Functional Biology and Global Climate Change Cluster, University of Technology Sydney, NSW 2009, Australia
| | - Peter A Davey
- Plant Functional Biology and Global Climate Change Cluster, University of Technology Sydney, NSW 2009, Australia
| | - John Kuo
- Electron Microscope Centre, University of Western Australia, WA 6900, Australia
| | - Peter J Ralph
- Plant Functional Biology and Global Climate Change Cluster, University of Technology Sydney, NSW 2009, Australia
| | - John A Raven
- Plant Functional Biology and Global Climate Change Cluster, University of Technology Sydney, NSW 2009, Australia
- University of Dundee at JHI, Invergowrie, Dundee, UK
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206
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Giovannoni J, Nguyen C, Ampofo B, Zhong S, Fei Z. The Epigenome and Transcriptional Dynamics of Fruit Ripening. ANNUAL REVIEW OF PLANT BIOLOGY 2017; 68:61-84. [PMID: 28226232 DOI: 10.1146/annurev-arplant-042916-040906] [Citation(s) in RCA: 222] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Fruit has evolved myriad forms that facilitate seed dispersal in varied environmental and ecological contexts. Because fleshy fruits become attractive and nutritious to seed-dispersing animals, the transition from unripe to ripe fruit represents a dramatic shift in survival strategy-from protecting unripe fruit against damaging animals to making it appealing to those same animals once ripened. For optimal fitness, ripening therefore must be tightly controlled and coordinated with seed development. Fruits, like many vegetative tissues of plants that contribute to human diets, are also subject to decay, which is enhanced as a consequence of the ripening transition. As such, ripening control has enormous relevance for both plant biology and food security. Here, we review the complex interactions of hormones and transcription factors during fleshy-fruit ripening, with an emphasis on the recent discovery that epigenome dynamics are a critical and early regulator of the cascade of molecular events that ultimately contribute to fruit maturation and ripening.
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Affiliation(s)
- James Giovannoni
- Robert W. Holley Center, US Department of Agriculture-Agricultural Research Service, Ithaca, New York 14853;
- Boyce Thompson Institute, Ithaca, New York 14853;
- School of Integrated Plant Sciences, Cornell University, Ithaca, New York 14853; ,
| | - Cuong Nguyen
- School of Integrated Plant Sciences, Cornell University, Ithaca, New York 14853; ,
| | - Betsy Ampofo
- School of Integrated Plant Sciences, Cornell University, Ithaca, New York 14853; ,
| | - Silin Zhong
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China;
| | - Zhangjun Fei
- Boyce Thompson Institute, Ithaca, New York 14853;
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207
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Renault H, Alber A, Horst NA, Basilio Lopes A, Fich EA, Kriegshauser L, Wiedemann G, Ullmann P, Herrgott L, Erhardt M, Pineau E, Ehlting J, Schmitt M, Rose JKC, Reski R, Werck-Reichhart D. A phenol-enriched cuticle is ancestral to lignin evolution in land plants. Nat Commun 2017; 8:14713. [PMID: 28270693 PMCID: PMC5344971 DOI: 10.1038/ncomms14713] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 01/24/2017] [Indexed: 12/22/2022] Open
Abstract
Lignin, one of the most abundant biopolymers on Earth, derives from the plant phenolic metabolism. It appeared upon terrestrialization and is thought critical for plant colonization of land. Early diverging land plants do not form lignin, but already have elements of its biosynthetic machinery. Here we delete in a moss the P450 oxygenase that defines the entry point in angiosperm lignin metabolism, and find that its pre-lignin pathway is essential for development. This pathway does not involve biochemical regulation via shikimate coupling, but instead is coupled with ascorbate catabolism, and controls the synthesis of the moss cuticle, which prevents desiccation and organ fusion. These cuticles share common features with lignin, cutin and suberin, and may represent the extant representative of a common ancestor. Our results demonstrate a critical role for the ancestral phenolic metabolism in moss erect growth and cuticle permeability, consistent with importance in plant adaptation to terrestrial conditions. The phenolic polymer lignin is thought to have contributed to adaptation of early land plants to terrestrial environments. Here Renault et al. show that moss, which does not produce lignin, contains an ancestral phenolic metabolism pathway that produces a phenol-enriched cuticle and prevents desiccation.
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Affiliation(s)
- Hugues Renault
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France.,Faculty of Biology, Chair of Plant Biotechnology, University of Freiburg, Schaenzlestrasse 1, 79104 Freiburg, Germany.,University of Strasbourg Institute for Advanced Study, 5 allée du Général Rouvillois, 67000 Strasbourg, France.,Freiburg Institute for Advanced Studies, University of Freiburg, Albertstraße 19, 79104 Freiburg, Germany
| | - Annette Alber
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France.,Department of Biology &Centre for Forest Biology, University of Victoria, British Columbia, Canada V8P 5C2
| | - Nelly A Horst
- Faculty of Biology, Chair of Plant Biotechnology, University of Freiburg, Schaenzlestrasse 1, 79104 Freiburg, Germany
| | - Alexandra Basilio Lopes
- Laboratoire d'Innovation Thérapeutique, UMR CNRS 7200, Université de Strasbourg, 74 route du Rhin, 67401 Illkirch, France
| | - Eric A Fich
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Lucie Kriegshauser
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France
| | - Gertrud Wiedemann
- Faculty of Biology, Chair of Plant Biotechnology, University of Freiburg, Schaenzlestrasse 1, 79104 Freiburg, Germany
| | - Pascaline Ullmann
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France
| | - Laurence Herrgott
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France
| | - Mathieu Erhardt
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France
| | - Emmanuelle Pineau
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France
| | - Jürgen Ehlting
- Department of Biology &Centre for Forest Biology, University of Victoria, British Columbia, Canada V8P 5C2
| | - Martine Schmitt
- Laboratoire d'Innovation Thérapeutique, UMR CNRS 7200, Université de Strasbourg, 74 route du Rhin, 67401 Illkirch, France
| | - Jocelyn K C Rose
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Ralf Reski
- Faculty of Biology, Chair of Plant Biotechnology, University of Freiburg, Schaenzlestrasse 1, 79104 Freiburg, Germany.,University of Strasbourg Institute for Advanced Study, 5 allée du Général Rouvillois, 67000 Strasbourg, France.,Freiburg Institute for Advanced Studies, University of Freiburg, Albertstraße 19, 79104 Freiburg, Germany.,BIOSS - Centre for Biological Signalling Studies, 79104 Freiburg, Germany
| | - Danièle Werck-Reichhart
- University of Strasbourg, Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, 12 rue du Général Zimmer, 67000 Strasbourg, France.,University of Strasbourg Institute for Advanced Study, 5 allée du Général Rouvillois, 67000 Strasbourg, France.,Freiburg Institute for Advanced Studies, University of Freiburg, Albertstraße 19, 79104 Freiburg, Germany
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208
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Jiao Y, Burow G, Gladman N, Acosta-Martinez V, Chen J, Burke J, Ware D, Xin Z. Efficient Identification of Causal Mutations through Sequencing of Bulked F 2 from Two Allelic Bloomless Mutants of Sorghum bicolor. FRONTIERS IN PLANT SCIENCE 2017; 8:2267. [PMID: 29379518 PMCID: PMC5771210 DOI: 10.3389/fpls.2017.02267] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 12/27/2017] [Indexed: 05/04/2023]
Abstract
Sorghum (Sorghum bicolor Moench, L.) plant accumulates copious layers of epi-cuticular wax (EW) on its aerial surfaces, to a greater extent than most other crops. EW provides a vapor barrier that reduces water loss, and is therefore considered to be a major determinant of sorghum's drought tolerance. However, little is known about the genes responsible for wax accumulation in sorghum. We isolated two allelic mutants, bloomless40-1 (bm40-1) and bm40-2, from a mutant library constructed from ethyl methane sulfonate (EMS) treated seeds of an inbred, BTx623. Both mutants were nearly devoid of the EW layer. Each bm mutant was crossed to the un-mutated BTx623 to generated F2 populations that segregated for the bm phenotype. Genomic DNA from 20 bm F2 plants from each population was bulked for whole genome sequencing. A single gene, Sobic.001G228100, encoding a GDSL-like lipase/acylhydrolase, had unique homozygous mutations in each bulked F2 population. Mutant bm40-1 harbored a missense mutation in the gene, whereas bm40-2 had a splice donor site mutation. Our findings thus provide strong evidence that mutation in this GDSL-like lipase gene causes the bm phenotype, and further demonstrate that this approach of sequencing two independent allelic mutant populations is an efficient method for identifying causal mutations. Combined with allelic mutants, MutMap provides powerful method to identify all causal genes for the large collection of bm mutants in sorghum, which will provide insight into how sorghum plants accumulate such abundant EW on their aerial surface. This knowledge may facilitate the development of tools for engineering drought-tolerant crops with reduced water loss.
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Affiliation(s)
- Yinping Jiao
- Cropping Systems Research Laboratory, Agricultural Research Service (USDA), Lubbock, TX, United States
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
| | - Gloria Burow
- Cropping Systems Research Laboratory, Agricultural Research Service (USDA), Lubbock, TX, United States
| | - Nicholas Gladman
- Cropping Systems Research Laboratory, Agricultural Research Service (USDA), Lubbock, TX, United States
| | - Veronica Acosta-Martinez
- Cropping Systems Research Laboratory, Agricultural Research Service (USDA), Lubbock, TX, United States
| | - Junping Chen
- Cropping Systems Research Laboratory, Agricultural Research Service (USDA), Lubbock, TX, United States
| | - John Burke
- Cropping Systems Research Laboratory, Agricultural Research Service (USDA), Lubbock, TX, United States
| | - Doreen Ware
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, United States
- USDA-ARS NAA Plant, Soil and Nutrition Laboratory Research Unit, Cornell University, Ithaca, NY, United States
- *Correspondence: Doreen Ware
| | - Zhanguo Xin
- Cropping Systems Research Laboratory, Agricultural Research Service (USDA), Lubbock, TX, United States
- Zhanguo Xin
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209
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Xue D, Zhang X, Lu X, Chen G, Chen ZH. Molecular and Evolutionary Mechanisms of Cuticular Wax for Plant Drought Tolerance. FRONTIERS IN PLANT SCIENCE 2017; 8:621. [PMID: 28503179 PMCID: PMC5408081 DOI: 10.3389/fpls.2017.00621] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Accepted: 04/06/2017] [Indexed: 05/05/2023]
Abstract
Cuticular wax, the first protective layer of above ground tissues of many plant species, is a key evolutionary innovation in plants. Cuticular wax safeguards the evolution from certain green algae to flowering plants and the diversification of plant taxa during the eras of dry and adverse terrestrial living conditions and global climate changes. Cuticular wax plays significant roles in plant abiotic and biotic stress tolerance and has been implicated in defense mechanisms against excessive ultraviolet radiation, high temperature, bacterial and fungal pathogens, insects, high salinity, and low temperature. Drought, a major type of abiotic stress, poses huge threats to global food security and health of terrestrial ecosystem by limiting plant growth and crop productivity. The composition, biochemistry, structure, biosynthesis, and transport of plant cuticular wax have been reviewed extensively. However, the molecular and evolutionary mechanisms of cuticular wax in plants in response to drought stress are still lacking. In this review, we focus on potential mechanisms, from evolutionary, molecular, and physiological aspects, that control cuticular wax and its roles in plant drought tolerance. We also raise key research questions and propose important directions to be resolved in the future, leading to potential applications of cuticular wax for water use efficiency in agricultural and environmental sustainability.
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Affiliation(s)
- Dawei Xue
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
- *Correspondence: Dawei Xue, Zhong-Hua Chen,
| | - Xiaoqin Zhang
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
| | - Xueli Lu
- College of Life and Environmental Sciences, Hangzhou Normal UniversityHangzhou, China
| | - Guang Chen
- College of Agriculture and Biotechnology, Zhejiang UniversityHangzhou, China
| | - Zhong-Hua Chen
- School of Science and Health, Hawkesbury Institute for the Environment, Western Sydney University, RichmondNSW, Australia
- *Correspondence: Dawei Xue, Zhong-Hua Chen,
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210
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Reem NT, Pogorelko G, Lionetti V, Chambers L, Held MA, Bellincampi D, Zabotina OA. Decreased Polysaccharide Feruloylation Compromises Plant Cell Wall Integrity and Increases Susceptibility to Necrotrophic Fungal Pathogens. FRONTIERS IN PLANT SCIENCE 2016; 7:630. [PMID: 27242834 PMCID: PMC4862258 DOI: 10.3389/fpls.2016.00630] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 04/25/2016] [Indexed: 05/18/2023]
Abstract
The complexity of cell wall composition and structure determines the strength, flexibility, and function of the primary cell wall in plants. However, the contribution of the various components to cell wall integrity (CWI) and function remains unclear. Modifications of cell wall composition can induce plant responses known as CWI control. In this study, we used transgenic expression of the fungal feruloyl esterase AnFAE to examine the effect of post-synthetic modification of Arabidopsis and Brachypodium cell walls. Transgenic Arabidopsis plants expressing AnFAE showed a significant reduction of monomeric ferulic acid, decreased amounts of wall-associated extensins, and increased susceptibility to Botrytis cinerea, compared with wild type. Transgenic Brachypodium showed reductions in monomeric and dimeric ferulic acids and increased susceptibility to Bipolaris sorokiniana. Upon infection, transgenic Arabidopsis and Brachypodium plants also showed increased expression of several defense-related genes compared with wild type. These results demonstrate a role, in both monocot and dicot plants, of polysaccharide feruloylation in plant CWI, which contributes to plant resistance to necrotrophic pathogens.
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Affiliation(s)
- Nathan T. Reem
- Roy J. Carver Department of Biochemistry,
Biophysiscs and Molecular Biology, Iowa State University, Ames, IAUSA
| | - Gennady Pogorelko
- Roy J. Carver Department of Biochemistry,
Biophysiscs and Molecular Biology, Iowa State University, Ames, IAUSA
| | - Vincenzo Lionetti
- Dipartmento di Biologia e Biotechnologie
“Charles Darwin,” Sapienza Universita di Roma, RomeItaly
| | - Lauran Chambers
- Roy J. Carver Department of Biochemistry,
Biophysiscs and Molecular Biology, Iowa State University, Ames, IAUSA
| | - Michael A. Held
- Department of Chemistry and Biochemistry, Ohio
University, Athens, OHUSA
| | - Daniela Bellincampi
- Dipartmento di Biologia e Biotechnologie
“Charles Darwin,” Sapienza Universita di Roma, RomeItaly
| | - Olga A. Zabotina
- Roy J. Carver Department of Biochemistry,
Biophysiscs and Molecular Biology, Iowa State University, Ames, IAUSA
- *Correspondence: Olga A. Zabotina,
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