1
|
Zhang W, Maksym R, Georgii E, Geist B, Schäffner AR. SA and NHP glucosyltransferase UGT76B1 affects plant defense in both SID2- and NPR1-dependent and independent manner. PLANT CELL REPORTS 2024; 43:149. [PMID: 38780624 PMCID: PMC11116260 DOI: 10.1007/s00299-024-03228-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 05/02/2024] [Indexed: 05/25/2024]
Abstract
KEY MESSAGE The small-molecule glucosyltransferase loss-of-function mutant ugt76b1 exhibits both SID2- or NPR1-dependent and independent facets of enhanced plant immunity, whereupon FMO1 is required for the SID2 and NPR1 independence. The small-molecule glucosyltransferase UGT76B1 inactivates salicylic acid (SA), isoleucic acid (ILA), and N-hydroxypipecolic acid (NHP). ugt76b1 loss-of-function plants manifest an enhanced defense status. Thus, we were interested how UGT76B1 genetically integrates in defense pathways and whether all impacts depend on SA and NHP. We study the integration of UGT76B1 by transcriptome analyses of ugt76b1. The comparison of transcripts altered by the loss of UGT76B1 with public transcriptome data reveals both SA-responsive, ISOCHORISMATE SYNTHASE 1/SALICYLIC ACID INDUCTION DEFICIENT 2 (ICS1/SID2)- and NON EXPRESSOR OF PR GENES 1 (NPR1)-dependent, consistent with the role of UGT76B1 in glucosylating SA, and SA-non-responsive, SID2/NPR1-independent genes. We also discovered that UGT76B1 impacts on a group of genes showing non-SA-responsiveness and regulation by infections independent from SID2/NPR1. Enhanced resistance of ugt76b1 against Pseudomonas syringae is partially independent from SID2 and NPR1. In contrast, the ugt76b1-activated resistance is completely dependent on FMO1 encoding the NHP-synthesizing FLAVIN-DEPENDENT MONOOXYGENASE 1). Moreover, FMO1 ranks top among the ugt76b1-induced SID2- and NPR1-independent pathogen responsive genes, suggesting that FMO1 determines the SID2- and NPR1-independent effect of ugt76b1. Furthermore, the genetic study revealed that FMO1, ENHANCED DISEASE SUSCEPTIBILITY 1 (EDS1), SID2, and NPR1 are required for the SA-JA crosstalk and senescence development of ugt76b1, indicating that EDS1 and FMO1 have a similar effect like stress-induced SA biosynthesis (SID2) or the key SA signaling regulator NPR1. Thus, UGT76B1 influences both SID2/NPR1-dependent and independent plant immunity, and the SID2/NPR1 independence is relying on FMO1 and its product NHP, another substrate of UGT76B1.
Collapse
Affiliation(s)
- Wei Zhang
- Institute of Biochemical Plant Pathology, Department of Environmental Sciences, Helmholtz Zentrum München, Neuherberg, Germany.
- College of Life Sciences, Jiangsu University, Jiangsu, People's Republic of China.
| | - Rafał Maksym
- Institute of Biochemical Plant Pathology, Department of Environmental Sciences, Helmholtz Zentrum München, Neuherberg, Germany
| | - Elisabeth Georgii
- Institute of Biochemical Plant Pathology, Department of Environmental Sciences, Helmholtz Zentrum München, Neuherberg, Germany
| | - Birgit Geist
- Institute of Biochemical Plant Pathology, Department of Environmental Sciences, Helmholtz Zentrum München, Neuherberg, Germany
| | - Anton R Schäffner
- Institute of Biochemical Plant Pathology, Department of Environmental Sciences, Helmholtz Zentrum München, Neuherberg, Germany.
| |
Collapse
|
2
|
Müller AT, Nakamura Y, Reichelt M, Luck K, Cosio E, Lackus ND, Gershenzon J, Mithöfer A, Köllner TG. Biosynthesis, herbivore induction, and defensive role of phenylacetaldoxime glucoside. PLANT PHYSIOLOGY 2023; 194:329-346. [PMID: 37584327 PMCID: PMC10756763 DOI: 10.1093/plphys/kiad448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 07/12/2023] [Accepted: 07/16/2023] [Indexed: 08/17/2023]
Abstract
Aldoximes are well-known metabolic precursors for plant defense compounds such as cyanogenic glycosides, glucosinolates, and volatile nitriles. They are also defenses themselves produced in response to herbivory; however, it is unclear whether aldoximes can be stored over a longer term as defense compounds and how plants protect themselves against the potential autotoxic effects of aldoximes. Here, we show that the Neotropical myrmecophyte tococa (Tococa quadrialata, recently renamed Miconia microphysca) accumulates phenylacetaldoxime glucoside (PAOx-Glc) in response to leaf herbivory. Sequence comparison, transcriptomic analysis, and heterologous expression revealed that 2 cytochrome P450 enzymes, CYP79A206 and CYP79A207, and the UDP-glucosyltransferase UGT85A123 are involved in the formation of PAOx-Glc in tococa. Another P450, CYP71E76, was shown to convert PAOx to the volatile defense compound benzyl cyanide. The formation of PAOx-Glc and PAOx in leaves is a very local response to herbivory but does not appear to be regulated by jasmonic acid signaling. In contrast to PAOx, which was only detectable during herbivory, PAOx-Glc levels remained high for at least 3 d after insect feeding. This, together with the fact that gut protein extracts of 3 insect herbivore species exhibited hydrolytic activity toward PAOx-Glc, suggests that the glucoside is a stable storage form of a defense compound that may provide rapid protection against future herbivory. Moreover, the finding that herbivory or pathogen elicitor treatment also led to the accumulation of PAOx-Glc in 3 other phylogenetically distant plant species suggests that the formation and storage of aldoxime glucosides may represent a widespread plant defense response.
Collapse
Affiliation(s)
- Andrea T Müller
- Research Group Plant Defense Physiology, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
- Pontifical Catholic University of Peru, Institute for Nature Earth and Energy (INTE-PUCP), San Miguel 15088, Lima, Peru
| | - Yoko Nakamura
- Research Group Biosynthesis/NMR, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
- Department of Natural Product Research, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Michael Reichelt
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Katrin Luck
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Eric Cosio
- Pontifical Catholic University of Peru, Institute for Nature Earth and Energy (INTE-PUCP), San Miguel 15088, Lima, Peru
| | - Nathalie D Lackus
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Jonathan Gershenzon
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Axel Mithöfer
- Research Group Plant Defense Physiology, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| | - Tobias G Köllner
- Department of Natural Product Research, Max Planck Institute for Chemical Ecology, D-07745 Jena, Germany
| |
Collapse
|
3
|
Ochoa JC, Mukhopadhyay S, Bieluszewski T, Jędryczka M, Malinowski R, Truman W. Natural variation in Arabidopsis responses to Plasmodiophora brassicae reveals an essential role for Resistance to Plasmodiophora brasssicae 1 (RPB1). THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 116:1421-1440. [PMID: 37646674 DOI: 10.1111/tpj.16438] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/09/2023] [Accepted: 08/16/2023] [Indexed: 09/01/2023]
Abstract
Despite the identification of clubroot resistance genes in various Brassica crops our understanding of the genetic basis of immunity to Plasmodiophora brassicae infection in the model plant Arabidopsis thaliana remains limited. To address this issue, we performed a screen of 142 natural accessions and identified 11 clubroot-resistant Arabidopsis lines. Genome-wide association analysis identified several genetic loci significantly linked with resistance. Three genes from two of these loci were targeted for deletion by CRISPR/Cas9 mutation in resistant accessions Est-1 and Uod-1. Deletion of Resistance to Plasmodiophora brassicae 1 (RPB1) rendered both lines susceptible to the P. brassicae pathotype P1+. Further analysis of rpb1 knock-out Est-1 and Uod-1 lines showed that the RPB1 protein is required for activation of downstream defence responses, such as the expression of phytoalexin biosynthesis gene CYP71A13. RPB1 has recently been shown to encode a cation channel localised in the endoplasmic reticulum. The clubroot susceptible Arabidopsis accession Col-0 lacks a functional RPB1 gene; when Col-0 is transformed with RPB1 expression driven by its native promoter it is capable of activating RPB1 transcription in response to infection, but this is not sufficient to confer resistance. Transient expression of RPB1 in Nicotiana tabacum induced programmed cell death in leaves. We conclude that RPB1 is a critical component of the defence response to P. brassicae infection in Arabidopsis, acting downstream of pathogen recognition but required for the elaboration of effective resistance.
Collapse
Affiliation(s)
- Juan Camilo Ochoa
- Institute of Plant Genetics, Polish Academy of Sciences, ul. Strzeszyńska 34, 60-479, Poznań, Poland
| | - Soham Mukhopadhyay
- Institute of Plant Genetics, Polish Academy of Sciences, ul. Strzeszyńska 34, 60-479, Poznań, Poland
| | - Tomasz Bieluszewski
- Laboratory of Genome Biology, Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, ul. Uniwersytetu Poznańskiego 6, 61-614, Poznań, Poland
| | - Małgorzata Jędryczka
- Institute of Plant Genetics, Polish Academy of Sciences, ul. Strzeszyńska 34, 60-479, Poznań, Poland
| | - Robert Malinowski
- Institute of Plant Genetics, Polish Academy of Sciences, ul. Strzeszyńska 34, 60-479, Poznań, Poland
| | - William Truman
- Institute of Plant Genetics, Polish Academy of Sciences, ul. Strzeszyńska 34, 60-479, Poznań, Poland
| |
Collapse
|
4
|
Slocum RD, Mejia Peña C, Liu Z. Transcriptional reprogramming of nucleotide metabolism in response to altered pyrimidine availability in Arabidopsis seedlings. FRONTIERS IN PLANT SCIENCE 2023; 14:1273235. [PMID: 38023851 PMCID: PMC10652772 DOI: 10.3389/fpls.2023.1273235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 10/17/2023] [Indexed: 12/01/2023]
Abstract
In Arabidopsis seedlings, inhibition of aspartate transcarbamoylase (ATC) and de novo pyrimidine synthesis resulted in pyrimidine starvation and developmental arrest a few days after germination. Synthesis of pyrimidine nucleotides by salvaging of exogenous uridine (Urd) restored normal seedling growth and development. We used this experimental system and transcriptional profiling to investigate genome-wide responses to changes in pyrimidine availability. Gene expression changes at different times after Urd supplementation of pyrimidine-starved seedlings were mapped to major pathways of nucleotide metabolism, in order to better understand potential coordination of pathway activities, at the level of transcription. Repression of de novo synthesis genes and induction of intracellular and extracellular salvaging genes were early and sustained responses to pyrimidine limitation. Since de novo synthesis is energetically more costly than salvaging, this may reflect a reduced energy status of the seedlings, as has been shown in recent studies for seedlings growing under pyrimidine limitation. The unexpected induction of pyrimidine catabolism genes under pyrimidine starvation may result from induction of nucleoside hydrolase NSH1 and repression of genes in the plastid salvaging pathway, diverting uracil (Ura) to catabolism. Identification of pyrimidine-responsive transcription factors with enriched binding sites in highly coexpressed genes of nucleotide metabolism and modeling of potential transcription regulatory networks provided new insights into possible transcriptional control of key enzymes and transporters that regulate nucleotide homeostasis in plants.
Collapse
Affiliation(s)
- Robert D. Slocum
- Department of Biological Sciences, Goucher College, Towson, MD, United States
| | - Carolina Mejia Peña
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, United States
| | - Zhongchi Liu
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, United States
| |
Collapse
|
5
|
Luo G, Shen Y, Wu K, Yang H, Wu C, Chang X, Tian W. Evaluation of inducing activity of CIP elicitors from diverse sources based on monosaccharide composition and physiological indicators. JOURNAL OF PLANT PHYSIOLOGY 2023; 285:154002. [PMID: 37149979 DOI: 10.1016/j.jplph.2023.154002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 12/20/2022] [Accepted: 05/03/2023] [Indexed: 05/09/2023]
Abstract
Application of elicitors can greatly enhance plant immune resistance against pathogens. However, it is still obscure whether elicitor activity is influenced by diverse sources. This study investigated the effect of foliar spraying of 19 batches of Chrysanthemum indicum polysaccharides (CIPs) on the disease resistance of Atractylodes macrocephala Koidz. (A. macrocephala) and explored the main reasons for the differences of inducing activity of CIP elicitors. PCA, OPLS-DA, grey relational analysis and entropy weight method had good predictability for the activity evaluation of CIP elicitors and other plant-derived elicitors. The results showed that 19 batches of CIPs had definite regional differences in inducing activity and monosaccharide content. CIP elicitors with high inducing activity could significantly increase the accumulation of Atractylenolide Ⅱ and Atractylenolide Ⅲ, the mRNA relative transcription level of CAT, POD, PAL genes, the amount of pH change in the medium and effectively reduce the disease index of A. macrocephala. Furthermore, CIP with high inducing activity exhibited the high contents of Rha, Ara and GalA, which might be the main contributor to their high activity. The evaluation procedure developed in this work can be applied for screening CIP elicitors with high inducing activity, and it lays a foundation for identifying more functional elicitors related to plant immune resistance.
Collapse
Affiliation(s)
- Guofu Luo
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou, Zhejiang, 310000, China
| | - Yirui Shen
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou, Zhejiang, 310000, China
| | - Kun Wu
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou, Zhejiang, 310000, China
| | - Huining Yang
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou, Zhejiang, 310000, China
| | - Chuntao Wu
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou, Zhejiang, 310000, China
| | - Xiangbing Chang
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou, Zhejiang, 310000, China
| | - Wei Tian
- College of Food and Health, Zhejiang Agriculture and Forestry University, Hangzhou, Zhejiang, 310000, China.
| |
Collapse
|
6
|
Orf I, Tenenboim H, Omranian N, Nikoloski Z, Fernie AR, Lisec J, Brotman Y, Bromke MA. Transcriptomic and Metabolomic Analysis of a Pseudomonas-Resistant versus a Susceptible Arabidopsis Accession. Int J Mol Sci 2022; 23:ijms232012087. [PMID: 36292941 PMCID: PMC9603445 DOI: 10.3390/ijms232012087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/06/2022] [Accepted: 10/08/2022] [Indexed: 11/24/2022] Open
Abstract
Accessions of one plant species may show significantly different levels of susceptibility to stresses. The Arabidopsis thaliana accessions Col-0 and C24 differ significantly in their resistance to the pathogen Pseudomonas syringae pv. tomato (Pst). To help unravel the underlying mechanisms contributing to this naturally occurring variance in resistance to Pst, we analyzed changes in transcripts and compounds from primary and secondary metabolism of Col-0 and C24 at different time points after infection with Pst. Our results show that the differences in the resistance of Col-0 and C24 mainly involve mechanisms of salicylic-acid-dependent systemic acquired resistance, while responses of jasmonic-acid-dependent mechanisms are shared between the two accessions. In addition, arginine metabolism and differential activity of the biosynthesis pathways of aliphatic glucosinolates and indole glucosinolates may also contribute to the resistance. Thus, this study highlights the difference in the defense response strategies utilized by different genotypes.
Collapse
Affiliation(s)
- Isabel Orf
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Hezi Tenenboim
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Nooshin Omranian
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam, Germany
- Bioinformatics Group, Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - Zoran Nikoloski
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam, Germany
- Bioinformatics Group, Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam, Germany
| | - Alisdair R. Fernie
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Jan Lisec
- Department of Analytical Chemistry, Federal Institute for Materials Research and Testing, Richard-Willstätter-Straße 11, 12489 Berlin, Germany
| | - Yariv Brotman
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
- Correspondence: (Y.B.); (M.A.B.)
| | - Mariusz A. Bromke
- Department of Biochemistry and Immunochemistry, Wroclaw Medical University, ul. Chałubińskiego 10, 50-367 Wrocław, Poland
- Correspondence: (Y.B.); (M.A.B.)
| |
Collapse
|
7
|
Cox KL. Stronger together: Ethylene, jasmonic acid, and MAPK signaling pathways synergistically induce camalexin synthesis for plant disease resistance. THE PLANT CELL 2022; 34:2829-2830. [PMID: 35652267 PMCID: PMC9338802 DOI: 10.1093/plcell/koac155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 05/17/2022] [Indexed: 05/27/2023]
|
8
|
Sakata N, Haraguchi T, Masuo S, Ishiga T, Ishiga Y. Pseudomonas cannabina pv. alisalensis Virulence Factors Are Involved in Resistance to Plant-Derived Antimicrobials during Infection. PLANTS 2022; 11:plants11131742. [PMID: 35807692 PMCID: PMC9269351 DOI: 10.3390/plants11131742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/21/2022] [Accepted: 06/28/2022] [Indexed: 11/16/2022]
Abstract
Bacteria are exposed to and tolerate diverse and potentially toxic compounds in the natural environment. While efflux transporters are generally thought to involve bacterial antibiotic resistance in vitro, their contributions to plant bacterial virulence have so far been poorly understood. Pseudomonas cannabina pv. alisalensis (Pcal) is a causal agent of bacterial blight of Brassicaceae. We here demonstrated that NU19, which is mutated in the resistance-nodulation-cell division (RND) transporter encoded gene, showed reduced virulence on cabbage compared to WT, indicating that the RND transporter contributes to Pcal virulence on cabbage. We also demonstrated that brassinin biosynthesis was induced after Pcal infection. Additionally, the RND transporter was involved in resistance to plant-derived antimicrobials and antibiotics, including the cabbage phytoalexin brassinin. These results suggest that the RND transporter extrudes plant-derived antimicrobials and contributes to Pcal virulence. We also found that the RND transporter contributes to Pcal virulence on Brassicaceae and tomato, but not on oat. These results suggest that the RND transporter contributes to Pcal virulence differentially depending on the host-plant species. Lastly, our expression-profile analysis indicated that the type-three secretion system (TTSS), which is essential for pathogenesis, is also involved in suppressing brassinin biosynthesis. Taken together, our results suggest that several Pcal virulence factors are involved in resistance to plant-derived antimicrobials and bacterial survival during infection.
Collapse
Affiliation(s)
- Nanami Sakata
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Ibaraki, Japan; (N.S.); (T.H.); (S.M.); (T.I.)
| | - Takumi Haraguchi
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Ibaraki, Japan; (N.S.); (T.H.); (S.M.); (T.I.)
| | - Shunsuke Masuo
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Ibaraki, Japan; (N.S.); (T.H.); (S.M.); (T.I.)
- Microbiology Research Center for Sustainability (MiCS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Ibaraki, Japan
| | - Takako Ishiga
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Ibaraki, Japan; (N.S.); (T.H.); (S.M.); (T.I.)
| | - Yasuhiro Ishiga
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8572, Ibaraki, Japan; (N.S.); (T.H.); (S.M.); (T.I.)
- Correspondence: ; Tel./Fax: +81-029-853-4792
| |
Collapse
|
9
|
Nguyen NH, Trotel-Aziz P, Villaume S, Rabenoelina F, Clément C, Baillieul F, Aziz A. Priming of camalexin accumulation in induced systemic resistance by beneficial bacteria against Botrytis cinerea and Pseudomonas syringae pv. tomato DC3000. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:3743-3757. [PMID: 35191984 DOI: 10.1093/jxb/erac070] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Plants harbor various beneficial microbes that modulate their innate immunity, resulting in induced systemic resistance (ISR) against a broad range of pathogens. Camalexin is an integral part of Arabidopsis innate immunity, but the contribution of its biosynthesis in ISR is poorly investigated. We focused on camalexin accumulation primed by two beneficial bacteria, Pseudomonas fluorescens and Bacillus subtilis, and its role in ISR against Botrytis cinerea and Pseudomonas syringae Pst DC3000. Our data show that colonization of Arabidopsis thaliana roots by beneficial bacteria triggers ISR against both pathogens and primes plants for enhanced accumulation of camalexin and CYP71A12 transcript in leaf tissues. Pseudomonas fluorescens induced the most efficient ISR response against B. cinerea, while B. subtilis was more efficient against Pst DC3000. Analysis of cyp71a12 and pad3 mutants revealed that loss of camalexin synthesis affected ISR mediated by both bacteria against B. cinerea. CYP71A12 and PAD3 contributed significantly to the pathogen-triggered accumulation of camalexin, but PAD3 does not seem to contribute to ISR against Pst DC3000. This indicated a significant contribution of camalexin in ISR against B. cinerea, but not always against Pst DC3000. Experiments with Arabidopsis mutants compromised in different hormonal signaling pathways highlighted that B. subtilis stimulates similar signaling pathways upon infection with both pathogens, since salicylic acid (SA), but not jasmonic acid (JA) or ethylene, is required for ISR camalexin accumulation. However, P. fluorescens-induced ISR differs depending on the pathogen; both SA and JA are required for camalexin accumulation upon B. cinerea infection, while camalexin is not necessary for priming against Pst DC3000.
Collapse
Affiliation(s)
- Ngoc Huu Nguyen
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
- Department of Plant Biology, Faculty of Agriculture and Forestry, Tay Nguyen University, 567 Le Duan, Daklak, Vietnam
| | - Patricia Trotel-Aziz
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
| | - Sandra Villaume
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
| | - Fanja Rabenoelina
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
| | - Christophe Clément
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
| | - Fabienne Baillieul
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
| | - Aziz Aziz
- Induced Resistance and Plant Bioprotection USC INRAE 1488, SFR Condorcet FR-CNRS 3417, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Reims Cedex 02, France
| |
Collapse
|
10
|
Liu H, Nwafor CC, Piao Y, Li X, Zhan Z, Piao Z. Identification and Characterization of Circular RNAs in Brassica rapa in Response to Plasmodiophora brassicae. Int J Mol Sci 2022; 23:5369. [PMID: 35628175 PMCID: PMC9141718 DOI: 10.3390/ijms23105369] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/08/2022] [Accepted: 05/10/2022] [Indexed: 02/01/2023] Open
Abstract
Plasmodiophora brassicae is a soil-borne pathogen that attacks the roots of cruciferous plants and causes clubroot disease. CircRNAs are noncoding RNAs, widely existing in plant and animal species. Although knowledge of circRNAs has been updated continuously and rapidly, information about circRNAs in the regulation of clubroot disease resistance is extremely limited in Brassica rapa. Here, Chinese cabbage (BJN 222) containing clubroot resistance genes (CRa) against P. brassicae Pb4 was susceptible to PbE. To investigate the mechanism of cicRNAs responsible for clubroot disease resistance in B. rapa, circRNA-seq was performed with roots of 'BJN 222' at 0, 8, and 23 days post-inoculated (dpi) with Pb4 and PbE. A total of 231 differentially expressed circRNAs were identified between the groups. Based on the differentially expressed circRNAs, the circRNA-miRNA-mRNA network was constructed using the target genes directly or indirectly related to plant resistance. Upregulated novel_circ_000495 suppressed the expression of miR5656-y, leading to the upregulation of Bra026508, which might cause plant resistance. Our results provide new insights into clubroot resistance mechanisms and lay a foundation for further studies exploring complex gene regulation networks in B. rapa.
Collapse
Affiliation(s)
- Huishan Liu
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China; (H.L.); (Y.P.); (X.L.)
| | - Chinedu Charles Nwafor
- Center for Plant Science Innovation and Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE 68588, USA;
| | - Yinglan Piao
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China; (H.L.); (Y.P.); (X.L.)
| | - Xiaonan Li
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China; (H.L.); (Y.P.); (X.L.)
| | - Zongxiang Zhan
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China; (H.L.); (Y.P.); (X.L.)
| | - Zhongyun Piao
- College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China; (H.L.); (Y.P.); (X.L.)
| |
Collapse
|
11
|
Nguyen NH, Trotel-Aziz P, Clément C, Jeandet P, Baillieul F, Aziz A. Camalexin accumulation as a component of plant immunity during interactions with pathogens and beneficial microbes. PLANTA 2022; 255:116. [PMID: 35511374 DOI: 10.1007/s00425-022-03907-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
This review provides an overview on the role of camalexin in plant immunity taking into account various plant-pathogen and beneficial microbe interactions, regulation mechanisms and the contribution in basal and induced plant resistance. In a hostile environment, plants evolve complex and sophisticated defense mechanisms to counteract invading pathogens and herbivores. Several lines of evidence support the assumption that secondary metabolites like phytoalexins which are synthesized de novo, play an important role in plant defenses and contribute to pathogens' resistance in a wide variety of plant species. Phytoalexins are synthesized and accumulated in plants upon pathogen challenge, root colonization by beneficial microbes, following treatment with chemical elicitors or in response to abiotic stresses. Their protective properties against pathogens have been reported in various plant species as well as their contribution to human health. Phytoalexins are synthesized through activation of particular sets of genes encoding specific pathways. Camalexin (3'-thiazol-2'-yl-indole) is the primary phytoalexin produced by Arabidopsis thaliana after microbial infection or abiotic elicitation and an iconic representative of the indole phytoalexin family. The synthesis of camalexin is an integral part of cruciferous plant defense mechanisms. Although the pathway leading to camalexin has been largely elucidated, the regulatory networks that control the induction of its biosynthetic steps by pathogens with different lifestyles or by beneficial microbes remain mostly unknown. This review thus presents current knowledge regarding camalexin biosynthesis induction during plant-pathogen and beneficial microbe interactions as well as in response to microbial compounds and provides an overview on its regulation and interplay with signaling pathways. The contribution of camalexin to basal and induced plant resistance and its detoxification by some pathogens to overcome host resistance are also discussed.
Collapse
Affiliation(s)
- Ngoc Huu Nguyen
- Induced Resistance and Plant Bioprotection, USC INRAE 1488, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Cedex 02, Reims, France
- Department of Plant Biology, Faculty of Agriculture and Forestry, Tay Nguyen University, 567 Le Duan, Buon Ma Thuot, Daklak, Vietnam
| | - Patricia Trotel-Aziz
- Induced Resistance and Plant Bioprotection, USC INRAE 1488, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Cedex 02, Reims, France
| | - Christophe Clément
- Induced Resistance and Plant Bioprotection, USC INRAE 1488, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Cedex 02, Reims, France
| | - Philippe Jeandet
- Induced Resistance and Plant Bioprotection, USC INRAE 1488, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Cedex 02, Reims, France
| | - Fabienne Baillieul
- Induced Resistance and Plant Bioprotection, USC INRAE 1488, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Cedex 02, Reims, France
| | - Aziz Aziz
- Induced Resistance and Plant Bioprotection, USC INRAE 1488, University of Reims, UFR Sciences, Campus Moulin de la Housse, 51687 Cedex 02, Reims, France.
| |
Collapse
|
12
|
Khatri P, Wally O, Rajcan I, Dhaubhadel S. Comprehensive Analysis of Cytochrome P450 Monooxygenases Reveals Insight Into Their Role in Partial Resistance Against Phytophthora sojae in Soybean. FRONTIERS IN PLANT SCIENCE 2022; 13:862314. [PMID: 35498648 PMCID: PMC9048032 DOI: 10.3389/fpls.2022.862314] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/10/2022] [Indexed: 05/31/2023]
Abstract
Cytochrome P450 monooxygenases (P450) participate in the catalytic conversion of biological compounds in a plethora of metabolic pathways, such as the biosynthesis of alkaloids, terpenoids, phenylpropanoids, and hormones in plants. Plants utilize these metabolites for growth and defense against biotic and abiotic stress. In this study, we identified 346 P450 (GmP450) enzymes encoded by 317 genes in soybean where 26 GmP450 genes produced splice variants. The genome-wide comparison of both A-type and non-A-type GmP450s for their motifs composition, gene structure, tissue-specific expression, and their chromosomal distribution were determined. Even though conserved P450 signature motifs were found in all GmP450 families, larger variation within a specific motif was observed in the non-A-type GmP450s as compared with the A-type. Here, we report that the length of variable region between two conserved motifs is exact in the members of the same family in majority of the A-type GmP450. Analyses of the transcriptomic datasets from soybean-Phytophthora sojae interaction studies, quantitative trait loci (QTL) associated with P. sojae resistance, and co-expression analysis identified some GmP450s that may be, in part, play an important role in partial resistance against P. sojae. The findings of our CYPome study provides novel insights into the functions of GmP450s and their involvements in metabolic pathways in soybean. Further experiments will elucidate their roles in general and legume-specific function.
Collapse
Affiliation(s)
- Praveen Khatri
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
- Department of Biology, University of Western Ontario, London, ON, Canada
| | - Owen Wally
- Harrow Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
| | - Istvan Rajcan
- Department of Plant Agriculture, University of Guelph, Guelph, ON, Canada
| | - Sangeeta Dhaubhadel
- London Research and Development Centre, Agriculture and Agri-Food Canada, London, ON, Canada
- Department of Biology, University of Western Ontario, London, ON, Canada
| |
Collapse
|
13
|
Gu H, Lian B, Yuan Y, Kong C, Li Y, Liu C, Qi Y. A 5' tRNA-Ala-derived small RNA regulates anti-fungal defense in plants. SCIENCE CHINA-LIFE SCIENCES 2021; 65:1-15. [PMID: 34705222 DOI: 10.1007/s11427-021-2017-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 10/18/2021] [Indexed: 11/24/2022]
Abstract
Apart from their primordial role in protein synthesis, tRNAs can be cleaved to produce tRNA-derived small RNAs (tsRNAs). The biological functions of tsRNAs in plants remain largely unknown. In this study, we developed RtcB ligation-based small RNA (sRNA) sequencing, a method that captures and distinguishes between 3'-2',3'-cyclic-phosphate (cP)/phosphate (P)-terminated sRNAs and 3'-OH-terminated sRNAs, and profiled 5' tsRNAs and 5' tRNA halves in Arabidopsis thaliana. We found that Arabidopsis 5' tsRNAs and 5' tRNA halves predominantly contain a cP at the 3' end and require S-like RNase 1 (RNS1) and RNS3 for their production. One of the most abundant 5' tsRNAs, 5' tsR-Ala, by associating with AGO1, negatively regulates Cytochrome P450 71A13 (CYP71A13) expression and camalexin biosynthesis to repress anti-fungal defense. Interestingly, 5' tsR-Ala is downregulated upon fungal infection. Our study provides a global view of 5' tsRNAs and 5' tRNA halves in Arabidopsis and unravels an important role of a 5' tsRNA in regulating anti-fungal defense.
Collapse
Affiliation(s)
- Hanqing Gu
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China.,Tsinghua University-Peking University Joint Center for Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Bi Lian
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China.,Tsinghua University-Peking University Joint Center for Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Yuxiang Yuan
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China.,Tsinghua University-Peking University Joint Center for Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Ci Kong
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China.,Tsinghua University-Peking University Joint Center for Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Yan Li
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China.,Tsinghua University-Peking University Joint Center for Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Chang Liu
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China.,Tsinghua University-Peking University Joint Center for Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Yijun Qi
- Center for Plant Biology, School of Life Sciences, Tsinghua University, Beijing, 100084, China. .,Tsinghua University-Peking University Joint Center for Life Sciences, Tsinghua University, Beijing, 100084, China.
| |
Collapse
|
14
|
Vergine M, Nicolì F, Sabella E, Aprile A, De Bellis L, Luvisi A. Secondary Metabolites in Xylella fastidiosa-Plant Interaction. Pathogens 2020; 9:pathogens9090675. [PMID: 32825425 PMCID: PMC7559865 DOI: 10.3390/pathogens9090675] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/12/2020] [Accepted: 08/18/2020] [Indexed: 12/24/2022] Open
Abstract
During their evolutionary history, plants have evolved the ability to synthesize and accumulate small molecules known as secondary metabolites. These compounds are not essential in the primary cell functions but play a significant role in the plants’ adaptation to environmental changes and in overcoming stress. Their high concentrations may contribute to the resistance of the plants to the bacterium Xylella fastidiosa, which has recently re-emerged as a plant pathogen of global importance. Although it is established in several areas globally and is considered one of the most dangerous plant pathogens, no cure has been developed due to the lack of effective bactericides and the difficulties in accessing the xylem vessels where the pathogen grows and produces cell aggregates and biofilm. This review highlights the role of secondary metabolites in the defense of the main economic hosts of X. fastidiosa and identifies how knowledge about biosynthetic pathways could improve our understanding of disease resistance. In addition, current developments in non-invasive techniques and strategies of combining molecular and physiological techniques are examined, in an attempt to identify new metabolic engineering options for plant defense.
Collapse
|
15
|
Yoo H, Greene GH, Yuan M, Xu G, Burton D, Liu L, Marqués J, Dong X. Translational Regulation of Metabolic Dynamics during Effector-Triggered Immunity. MOLECULAR PLANT 2020; 13:88-98. [PMID: 31568832 PMCID: PMC6946852 DOI: 10.1016/j.molp.2019.09.009] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 09/09/2019] [Accepted: 09/16/2019] [Indexed: 05/03/2023]
Abstract
Recent studies have shown that global translational reprogramming is an early activation event in pattern-triggered immunity, when plants recognize microbe-associated molecular patterns. However, it is not fully known whether translational regulation also occurs in subsequent immune responses, such as effector-triggered immunity (ETI). In this study, we performed genome-wide ribosome profiling in Arabidopsis upon RPS2-mediated ETI activation and discovered that specific groups of genes were translationally regulated, mostly in coordination with transcription. These genes encode enzymes involved in aromatic amino acid, phenylpropanoid, camalexin, and sphingolipid metabolism. The functional significance of these components in ETI was confirmed by genetic and biochemical analyses. Our findings provide new insights into diverse translational regulation of plant immune responses and demonstrate that translational coordination of metabolic gene expression is an important strategy for ETI.
Collapse
Affiliation(s)
- Heejin Yoo
- Howard Hughes Medical Institute, Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA
| | - George H Greene
- Howard Hughes Medical Institute, Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA
| | - Meng Yuan
- National Key Laboratory of Crop Genetic Improvement, National Centre of Plant Gene Research (Wuhan), Huazhong Agricultural University, 430070 Wuhan, China
| | - Guoyong Xu
- Howard Hughes Medical Institute, Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA
| | - Derek Burton
- Howard Hughes Medical Institute, Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA
| | - Lijing Liu
- Howard Hughes Medical Institute, Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA
| | - Jorge Marqués
- Howard Hughes Medical Institute, Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA
| | - Xinnian Dong
- Howard Hughes Medical Institute, Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA.
| |
Collapse
|
16
|
Mucha S, Heinzlmeir S, Kriechbaumer V, Strickland B, Kirchhelle C, Choudhary M, Kowalski N, Eichmann R, Hückelhoven R, Grill E, Kuster B, Glawischnig E. The Formation of a Camalexin Biosynthetic Metabolon. THE PLANT CELL 2019; 31:2697-2710. [PMID: 31511315 PMCID: PMC6881122 DOI: 10.1105/tpc.19.00403] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/31/2019] [Accepted: 09/06/2019] [Indexed: 05/09/2023]
Abstract
Arabidopsis (Arabidopsis thaliana) efficiently synthesizes the antifungal phytoalexin camalexin without the apparent release of bioactive intermediates, such as indole-3-acetaldoxime, suggesting that the biosynthetic pathway of this compound is channeled by the formation of an enzyme complex. To identify such protein interactions, we used two independent untargeted coimmunoprecipitation (co-IP) approaches with the biosynthetic enzymes CYP71B15 and CYP71A13 as baits and determined that the camalexin biosynthetic P450 enzymes copurified with these enzymes. These interactions were confirmed by targeted co-IP and Förster resonance energy transfer measurements based on fluorescence lifetime microscopy (FRET-FLIM). Furthermore, the interaction of CYP71A13 and Arabidopsis P450 Reductase1 was observed. We detected increased substrate affinity of CYP79B2 in the presence of CYP71A13, indicating an allosteric interaction. Camalexin biosynthesis involves glutathionylation of the intermediary indole-3-cyanohydrin, which is synthesized by CYP71A12 and especially CYP71A13. FRET-FLIM and co-IP demonstrated that the glutathione transferase GSTU4, which is coexpressed with Trp- and camalexin-specific enzymes, is physically recruited to the complex. Surprisingly, camalexin concentrations were elevated in knockout and reduced in GSTU4-overexpressing plants. This shows that GSTU4 is not directly involved in camalexin biosynthesis but rather plays a role in a competing mechanism.
Collapse
Affiliation(s)
- Stefanie Mucha
- Chair of Botany, Department of Plant Sciences, Technical University of Munich, 85354 Freising, Germany
- Chair of Genetics, Department of Plant Sciences, Technical University of Munich, 85354 Freising, Germany
| | - Stephanie Heinzlmeir
- Chair of Proteomics and Bioanalytics, Technical University of Munich, 85354 Freising, Germany
| | - Verena Kriechbaumer
- Plant Cell Biology, Biological and Medical Sciences, Oxford Brookes University, Oxford OX3 0BP, United Kingdom
| | - Benjamin Strickland
- Chair of Botany, Department of Plant Sciences, Technical University of Munich, 85354 Freising, Germany
| | - Charlotte Kirchhelle
- Chair of Genetics, Department of Plant Sciences, Technical University of Munich, 85354 Freising, Germany
| | - Manisha Choudhary
- Chair of Genetics, Department of Plant Sciences, Technical University of Munich, 85354 Freising, Germany
| | - Natalie Kowalski
- Chair of Botany, Department of Plant Sciences, Technical University of Munich, 85354 Freising, Germany
| | - Ruth Eichmann
- Chair of Phytopathology, Department of Plant Sciences, Technical University of Munich, 85354 Freising, Germany
| | - Ralph Hückelhoven
- Chair of Phytopathology, Department of Plant Sciences, Technical University of Munich, 85354 Freising, Germany
| | - Erwin Grill
- Chair of Botany, Department of Plant Sciences, Technical University of Munich, 85354 Freising, Germany
| | - Bernhard Kuster
- Chair of Proteomics and Bioanalytics, Technical University of Munich, 85354 Freising, Germany
| | - Erich Glawischnig
- Chair of Botany, Department of Plant Sciences, Technical University of Munich, 85354 Freising, Germany
- Chair of Genetics, Department of Plant Sciences, Technical University of Munich, 85354 Freising, Germany
- Microbial Biotechnology, TUM Campus Straubing for Biotechnology and Sustainability, Technical University of Munich, Schulgasse 22, 94315 Straubing, Germany
| |
Collapse
|
17
|
Wagner G, Laperche A, Lariagon C, Marnet N, Renault D, Guitton Y, Bouchereau A, Delourme R, Manzanares-Dauleux MJ, Gravot A. Resolution of quantitative resistance to clubroot into QTL-specific metabolic modules. JOURNAL OF EXPERIMENTAL BOTANY 2019; 70:5375-5390. [PMID: 31145785 PMCID: PMC6793449 DOI: 10.1093/jxb/erz265] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 05/21/2019] [Indexed: 05/23/2023]
Abstract
Plant disease resistance is often under quantitative genetic control. Thus, in a given interaction, plant cellular responses to infection are influenced by resistance or susceptibility alleles at different loci. In this study, a genetic linkage analysis was used to address the complexity of the metabolic responses of Brassica napus roots to infection by Plasmodiophora brassicae. Metabolome profiling and pathogen quantification in a segregating progeny allowed a comparative mapping of quantitative trait loci (QTLs) involved in resistance and in metabolic adjustments. Distinct metabolic modules were associated with each resistance QTL, suggesting the involvement of different underlying cellular mechanisms. This approach highlighted the possible role of gluconasturtiin and two unknown metabolites in the resistance conferred by two QTLs on chromosomes C03 and C09, respectively. Only two susceptibility biomarkers (glycine and glutathione) were simultaneously linked to the three main resistance QTLs, suggesting the central role of these compounds in the interaction. By contrast, several genotype-specific metabolic responses to infection were genetically unconnected to resistance or susceptibility. Likewise, variations of root sugar profiles, which might have influenced pathogen nutrition, were not found to be related to resistance QTLs. This work illustrates how genetic metabolomics can help to understand plant stress responses and their possible links with disease.
Collapse
Affiliation(s)
- Geoffrey Wagner
- IGEPP, Agrocampus Ouest, INRA, Université de Rennes, Le Rheu, France
| | - Anne Laperche
- IGEPP, Agrocampus Ouest, INRA, Université de Rennes, Le Rheu, France
| | | | - Nathalie Marnet
- Plateau de Profilage Métabolique et Métabolomique (P2M2), Centre de Recherche Angers Nantes BIA, INRA, Le Rheu, France
| | - David Renault
- UMR EcoBio, Université de Rennes, CNRS, Rennes, France
| | - Yann Guitton
- LUNAM Université, Oniris, Laboratoire d’Etude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes, France
| | - Alain Bouchereau
- IGEPP, Agrocampus Ouest, INRA, Université de Rennes, Le Rheu, France
| | - Régine Delourme
- IGEPP, Agrocampus Ouest, INRA, Université de Rennes, Le Rheu, France
| | | | - Antoine Gravot
- IGEPP, Agrocampus Ouest, INRA, Université de Rennes, Le Rheu, France
| |
Collapse
|
18
|
Ouassou M, Mukhaimar M, El Amrani A, Kroymann J, Chauveau O. [Biosynthesis of indole glucosinolates and ecological role of secondary modification pathways]. C R Biol 2019; 342:58-80. [PMID: 31088733 DOI: 10.1016/j.crvi.2019.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 03/22/2019] [Accepted: 03/23/2019] [Indexed: 11/26/2022]
Abstract
Indole glucosinolates are plant secondary metabolites derived from the amino acid tryptophan. They are part of a large group of sulfur-containing molecules almost exclusively found among Brassicales, which include the mustard family (Brassicaceae) with many edible plant species of major nutritional importance. These compounds mediate numerous interactions between these plants and their natural enemies and are therefore of major biological and economical interest. This literature review aims at taking stock of recent advances of our knowledge about the biosynthetic pathways of indole glucosinolates, but also about the defense strategies and ecological processes involving these metabolites.
Collapse
Affiliation(s)
- Malika Ouassou
- Unité « Écologie, systématique et évolution », UMR 8079, université Paris-Sud, CNRS, AgroParisTech, université Paris-Saclay, 91405 Orsay, France; Laboratory of Biochemistry and Molecular Genetics, Department of Biology, Faculty of Science and Technics, Abdelmalek Essaadi University, Tangier, Maroc
| | - Maisara Mukhaimar
- National Agricultural Research Center (NARC)-Jenin/Gaza, Ministry of Agriculture, Jenin, Palestine
| | - Amal El Amrani
- Laboratory of Biochemistry and Molecular Genetics, Department of Biology, Faculty of Science and Technics, Abdelmalek Essaadi University, Tangier, Maroc
| | - Juergen Kroymann
- Unité « Écologie, systématique et évolution », UMR 8079, université Paris-Sud, CNRS, AgroParisTech, université Paris-Saclay, 91405 Orsay, France
| | - Olivier Chauveau
- Unité « Écologie, systématique et évolution », UMR 8079, université Paris-Sud, CNRS, AgroParisTech, université Paris-Saclay, 91405 Orsay, France.
| |
Collapse
|
19
|
Liégard B, Baillet V, Etcheverry M, Joseph E, Lariagon C, Lemoine J, Evrard A, Colot V, Gravot A, Manzanares‐Dauleux MJ, Jubault M. Quantitative resistance to clubroot infection mediated by transgenerational epigenetic variation in Arabidopsis. THE NEW PHYTOLOGIST 2019; 222:468-479. [PMID: 30393890 PMCID: PMC6587750 DOI: 10.1111/nph.15579] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 10/26/2018] [Indexed: 05/02/2023]
Abstract
Quantitative disease resistance, often influenced by environmental factors, is thought to be the result of DNA sequence variants segregating at multiple loci. However, heritable differences in DNA methylation, so-called transgenerational epigenetic variants, also could contribute to quantitative traits. Here, we tested this possibility using the well-characterized quantitative resistance of Arabidopsis to clubroot, a Brassica major disease caused by Plasmodiophora brassicae. For that, we used the epigenetic recombinant inbred lines (epiRIL) derived from the cross ddm1-2 × Col-0, which show extensive epigenetic variation but limited DNA sequence variation. Quantitative loci under epigenetic control (QTLepi ) mapping was carried out on 123 epiRIL infected with P. brassicae and using various disease-related traits. EpiRIL displayed a wide range of continuous phenotypic responses. Twenty QTLepi were detected across the five chromosomes, with a bona fide epigenetic origin for 16 of them. The effect of five QTLepi was dependent on temperature conditions. Six QTLepi co-localized with previously identified clubroot resistance genes and QTL in Arabidopsis. Co-localization of clubroot resistance QTLepi with previously detected DNA-based QTL reveals a complex model in which a combination of allelic and epiallelic variations interacts with the environment to lead to variation in clubroot quantitative resistance.
Collapse
Affiliation(s)
- Benjamin Liégard
- IGEPPINRAAGROCAMPUS OUESTUniversité de RennesF‐35000RennesFrance
| | - Victoire Baillet
- Institut de Biologie de l'Ecole Normale Supérieure (IBENS)Ecole Normale SupérieureCentre National de la Recherche Scientifique (CNRS)Institut National de la Santé et de la Recherche Médicale (INSERM)F‐75005ParisFrance
| | - Mathilde Etcheverry
- Institut de Biologie de l'Ecole Normale Supérieure (IBENS)Ecole Normale SupérieureCentre National de la Recherche Scientifique (CNRS)Institut National de la Santé et de la Recherche Médicale (INSERM)F‐75005ParisFrance
| | - Evens Joseph
- IGEPPINRAAGROCAMPUS OUESTUniversité de RennesF‐35000RennesFrance
| | | | - Jocelyne Lemoine
- IGEPPINRAAGROCAMPUS OUESTUniversité de RennesF‐35000RennesFrance
| | - Aurélie Evrard
- IGEPPINRAAGROCAMPUS OUESTUniversité de RennesF‐35000RennesFrance
| | - Vincent Colot
- Institut de Biologie de l'Ecole Normale Supérieure (IBENS)Ecole Normale SupérieureCentre National de la Recherche Scientifique (CNRS)Institut National de la Santé et de la Recherche Médicale (INSERM)F‐75005ParisFrance
| | - Antoine Gravot
- IGEPPINRAAGROCAMPUS OUESTUniversité de RennesF‐35000RennesFrance
| | | | - Mélanie Jubault
- IGEPPINRAAGROCAMPUS OUESTUniversité de RennesF‐35000RennesFrance
| |
Collapse
|
20
|
Castillo N, Pastor V, Chávez Á, Arró M, Boronat A, Flors V, Ferrer A, Altabella T. Inactivation of UDP-Glucose Sterol Glucosyltransferases Enhances Arabidopsis Resistance to Botrytis cinerea. FRONTIERS IN PLANT SCIENCE 2019; 10:1162. [PMID: 31611892 PMCID: PMC6776639 DOI: 10.3389/fpls.2019.01162] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 08/26/2019] [Indexed: 05/15/2023]
Abstract
Free and glycosylated sterols are both structural components of the plasma membrane that regulate their biophysical properties and consequently different plasma membrane-associated processes such as plant adaptation to stress or signaling. Several reports relate changes in glycosylated sterols levels with the plant response to abiotic stress, but the information about the role of these compounds in the response to biotic stress is scarce. In this work, we have studied the response to the necrotrophic fungus Botrytis cinerea in an Arabidopsis mutant that is severely impaired in steryl glycosides biosynthesis due to the inactivation of the two sterol glucosyltransferases (UGT80A2 and UGT80B1) reported in this plant. This mutant exhibits enhanced resistance against B. cinerea when compared to wild-type plants, which correlates with increased levels of jasmonic acid (JA) and up-regulation of two marker genes (PDF1.2 and PR4) of the ERF branch of the JA signaling pathway. Upon B. cinerea infection, the ugt80A2;B1 double mutant also accumulates higher levels of camalexin, the major Arabidopsis phytoalexin, than wild-type plants. Camalexin accumulation correlates with enhanced transcript levels of several cytochrome P450 camalexin biosynthetic genes, as well as of their transcriptional regulators WRKY33, ANAC042, and MYB51, suggesting that the Botrytis-induced accumulation of camalexin is coordinately regulated at the transcriptional level. After fungus infection, the expression of genes involved in the indole glucosinolate biosynthesis is also up-regulated at a higher degree in the ugt80A2;B1 mutant than in wild-type plants. Altogether, the results of this study show that glycosylated sterols play an important role in the regulation of Arabidopsis response to B. cinerea infection and suggest that this occurs through signaling pathways involving the canonical stress-hormone JA and the tryptophan-derived secondary metabolites camalexin and possibly also indole glucosinolates.
Collapse
Affiliation(s)
- Nidia Castillo
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Barcelona, Spain
| | - Victoria Pastor
- Metabolic Integration and Cell Signalling Group, Plant Physiology Section, Department of Ciencias Agrarias y del Medio Natural, Universitat Jaume I, Castelló, Spain
| | - Ángel Chávez
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Barcelona, Spain
| | - Montserrat Arró
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Barcelona, Spain
- Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
| | - Albert Boronat
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Barcelona, Spain
- Department of Biochemistry and Molecular Biomedicine, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Victor Flors
- Metabolic Integration and Cell Signalling Group, Plant Physiology Section, Department of Ciencias Agrarias y del Medio Natural, Universitat Jaume I, Castelló, Spain
| | - Albert Ferrer
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Barcelona, Spain
- Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
- *Correspondence: Teresa Altabella, ; Albert Ferrer,
| | - Teresa Altabella
- Plant Metabolism and Metabolic Engineering Program, Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Barcelona, Spain
- Department of Biology, Healthcare and the Environment, Faculty of Pharmacy and Food Sciences, University of Barcelona, Barcelona, Spain
- *Correspondence: Teresa Altabella, ; Albert Ferrer,
| |
Collapse
|
21
|
Li H, Li X, Xuan Y, Jiang J, Wei Y, Piao Z. Genome Wide Identification and Expression Profiling of SWEET Genes Family Reveals Its Role During Plasmodiophora brassicae-Induced Formation of Clubroot in Brassica rapa. FRONTIERS IN PLANT SCIENCE 2018; 9:207. [PMID: 29541081 PMCID: PMC5836591 DOI: 10.3389/fpls.2018.00207] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 02/02/2018] [Indexed: 05/02/2023]
Abstract
Plasmodiophora brassicae is a soil borne pathogen and the causal agent of clubroot, a devastating disease of Brassica crops. The pathogen lives inside roots, and hijacks nutrients from the host plants. It is suggested that clubroot galls created an additional nutrient sink in infected roots. However, the molecular mechanism underlying P. brassicae infection and sugar transport is unclear. Here, we analyzed sugar contents in leaves and roots before and after P. brassicae infection using a pair of Chinese cabbage near-isogenic lines (NILs), carrying either a clubroot resistant (CR) or susceptible (CS) allele at the CRb locus. P. brassicae infection caused significant increase of glucose and fructose contents in the root of CS-NIL compared to CR-NIL, suggesting that sugar translocation and P. brassicae growth are closely related. Among 32 B. rapa SWEET homologs, several BrSWEETs belonging to Clade I and III were significantly up-regulated, especially in CS-NIL upon P. brassicae infection. Moreover, Arabidopsis sweet11 mutant exhibited slower gall formation compared to the wild-type plants. Our studies suggest that P. brassicae infection probably triggers active sugar translocation between the sugar producing tissues and the clubbed tissues, and the SWEET family genes are involved in this process.
Collapse
Affiliation(s)
- Hong Li
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Xiaonan Li
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Yuanhu Xuan
- College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Jing Jiang
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Yangdou Wei
- Department of Biology, University of Saskatchewan, Saskatoon, SK, Canada
| | - Zhongyun Piao
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| |
Collapse
|
22
|
Piao Y, Jin K, He Y, Liu J, Liu S, Li X, Piao Z. Genome-wide identification and role of MKK and MPK gene families in clubroot resistance of Brassica rapa. PLoS One 2018; 13:e0191015. [PMID: 29444111 PMCID: PMC5812557 DOI: 10.1371/journal.pone.0191015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Accepted: 12/27/2017] [Indexed: 11/29/2022] Open
Abstract
Mitogen-activated protein kinase (MAPK or MPK) cascades play key roles in responses to various biotic stresses, as well as in plant growth and development. However, the responses of MPK and MPK kinase (MKK) in Chinese cabbage (Brassica rapa ssp. pekinensis) to Plasmodiophora brassicae, a causal agent of clubroot disease in Brassica crops, are still not clear. In the present study, a total of 11 B. rapa MKK (BraMKK) and 30 BraMPK genes were identified and unevenly distributed in 6 and 10 chromosomes, respectively. The synteny analysis indicated that these genes experienced whole-genome triplication and segmental and tandem duplication during or after the divergence of B. rapa, accompanied by the loss of three MKK and two MPK orthologs of Arabidopsis. The BraMKK and BraMPK genes were classified into four groups with similar intron/exon structures and conserved motifs in each group. A quantitative PCR analysis showed that the majority of BraMKK and BraMPK genes were natively expressed in roots, hypocotyls, and leaves, whereas 5 BraMKK and 16 BraMPK genes up-regulated in the roots upon P. brassicae infection. Additionally, these 5 BraMKK and 16 BraMPK genes exhibited a significantly different expression pattern between a pair of clubroot-resistant/susceptible near-isogenic lines (NILs). Furthermore, the possible modules of MKK-MPK involved in B. rapa-P. brassicae interaction are also discussed. The present study will provide functional clues for further characterization of the MAPK cascades in B. rapa.
Collapse
Affiliation(s)
- Yinglan Piao
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Kaining Jin
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Ying He
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Jiaxiu Liu
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Shuang Liu
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Xiaonan Li
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- * E-mail: (ZP); (XL)
| | - Zhongyun Piao
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- * E-mail: (ZP); (XL)
| |
Collapse
|
23
|
Julkowska MM, Koevoets IT, Mol S, Hoefsloot H, Feron R, Tester MA, Keurentjes JJB, Korte A, Haring MA, de Boer GJ, Testerink C. Genetic Components of Root Architecture Remodeling in Response to Salt Stress. THE PLANT CELL 2017; 29:3198-3213. [PMID: 29114015 PMCID: PMC5757256 DOI: 10.1105/tpc.16.00680] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 10/12/2017] [Accepted: 11/07/2017] [Indexed: 05/06/2023]
Abstract
Salinity of the soil is highly detrimental to plant growth. Plants respond by a redistribution of root mass between main and lateral roots, yet the genetic machinery underlying this process is still largely unknown. Here, we describe the natural variation among 347 Arabidopsis thaliana accessions in root system architecture (RSA) and identify the traits with highest natural variation in their response to salt. Salt-induced changes in RSA were associated with 100 genetic loci using genome-wide association studies. Two candidate loci associated with lateral root development were validated and further investigated. Changes in CYP79B2 expression in salt stress positively correlated with lateral root development in accessions, and cyp79b2 cyp79b3 double mutants developed fewer and shorter lateral roots under salt stress, but not in control conditions. By contrast, high HKT1 expression in the root repressed lateral root development, which could be partially rescued by addition of potassium. The collected data and multivariate analysis of multiple RSA traits, available through the Salt_NV_Root App, capture root responses to salinity. Together, our results provide a better understanding of effective RSA remodeling responses, and the genetic components involved, for plant performance in stress conditions.
Collapse
Affiliation(s)
- Magdalena M Julkowska
- Plant Physiology, University of Amsterdam, 1090GE Amsterdam, The Netherlands
- Plant Cell Biology, University of Amsterdam, 1090GE Amsterdam, The Netherlands
| | - Iko T Koevoets
- Plant Cell Biology, University of Amsterdam, 1090GE Amsterdam, The Netherlands
| | - Selena Mol
- Plant Physiology, University of Amsterdam, 1090GE Amsterdam, The Netherlands
- Plant Cell Biology, University of Amsterdam, 1090GE Amsterdam, The Netherlands
| | - Huub Hoefsloot
- Biosystems Data Analysis, University of Amsterdam, 1090GE Amsterdam, The Netherlands
| | - Richard Feron
- ENZA Zaden Research and Development, 1602DB Enkhuizen, The Netherlands
| | - Mark A Tester
- Department of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, 23955-6900 Thuwal-Jeddah, Kingdom of Saudi Arabia
| | - Joost J B Keurentjes
- Applied Quantitative Genetics, Swammerdam Institute for Life Sciences, 1090GE Amsterdam, The Netherlands
- Laboratory of Genetics, Wageningen University & Research, 6708PB Wageningen, The Netherlands
| | - Arthur Korte
- Center for Computational and Theoretical Biology, Wuerzburg Universitat, 97074 Wuerzburg, Germany
| | - Michel A Haring
- Plant Physiology, University of Amsterdam, 1090GE Amsterdam, The Netherlands
| | - Gert-Jan de Boer
- ENZA Zaden Research and Development, 1602DB Enkhuizen, The Netherlands
| | - Christa Testerink
- Plant Cell Biology, University of Amsterdam, 1090GE Amsterdam, The Netherlands
| |
Collapse
|
24
|
Pilet-Nayel ML, Moury B, Caffier V, Montarry J, Kerlan MC, Fournet S, Durel CE, Delourme R. Quantitative Resistance to Plant Pathogens in Pyramiding Strategies for Durable Crop Protection. FRONTIERS IN PLANT SCIENCE 2017; 8:1838. [PMID: 29163575 PMCID: PMC5664368 DOI: 10.3389/fpls.2017.01838] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 10/10/2017] [Indexed: 05/18/2023]
Abstract
Quantitative resistance has gained interest in plant breeding for pathogen control in low-input cropping systems. Although quantitative resistance frequently has only a partial effect and is difficult to select, it is considered more durable than major resistance (R) genes. With the exponential development of molecular markers over the past 20 years, resistance QTL have been more accurately detected and better integrated into breeding strategies for resistant varieties with increased potential for durability. This review summarizes current knowledge on the genetic inheritance, molecular basis, and durability of quantitative resistance. Based on this knowledge, we discuss how strategies that combine major R genes and QTL in crops can maintain the effectiveness of plant resistance to pathogens. Combining resistance QTL with complementary modes of action appears to be an interesting strategy for breeding effective and potentially durable resistance. Combining quantitative resistance with major R genes has proven to be a valuable approach for extending the effectiveness of major genes. In the plant genomics era, improved tools and methods are becoming available to better integrate quantitative resistance into breeding strategies. Nevertheless, optimal combinations of resistance loci will still have to be identified to preserve resistance effectiveness over time for durable crop protection.
Collapse
Affiliation(s)
- Marie-Laure Pilet-Nayel
- Institute for Genetics, Environment and Plant Protection (INRA), UMR 1349, Leu Rheu, France
- PISOM, UMT INRA-Terres Inovia, Le Rheu, France
| | | | - Valérie Caffier
- Research Institute of Horticulture and Seeds (INRA), UMR 1345, Beaucouzé, France
| | - Josselin Montarry
- Institute for Genetics, Environment and Plant Protection (INRA), UMR 1349, Leu Rheu, France
| | - Marie-Claire Kerlan
- Institute for Genetics, Environment and Plant Protection (INRA), UMR 1349, Leu Rheu, France
| | - Sylvain Fournet
- Institute for Genetics, Environment and Plant Protection (INRA), UMR 1349, Leu Rheu, France
| | - Charles-Eric Durel
- Research Institute of Horticulture and Seeds (INRA), UMR 1345, Beaucouzé, France
| | - Régine Delourme
- Institute for Genetics, Environment and Plant Protection (INRA), UMR 1349, Leu Rheu, France
| |
Collapse
|
25
|
Chen T, Bi K, He Z, Gao Z, Zhao Y, Fu Y, Cheng J, Xie J, Jiang D. Arabidopsis Mutant bik1 Exhibits Strong Resistance to Plasmodiophora brassicae. Front Physiol 2016; 7:402. [PMID: 27679580 PMCID: PMC5020103 DOI: 10.3389/fphys.2016.00402] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 08/29/2016] [Indexed: 11/13/2022] Open
Abstract
Botrytis-induced kinase1 (BIK1), a receptor-like cytoplasmic kinase, plays an important role in resistance against pathogens and insects in Arabidopsis thaliana. However, it remains unknown whether BIK1 functions against Plasmodiophora brassicae, an obligate biotrophic protist that attacks cruciferous plants and induces gall formation on roots. Here, we investigated the potential roles of receptors FLS2, BAK1, and BIK1 in the infection of P. brassicae cruciferous plants. Wild-type plants, fls2, and bak1 mutants showed typical symptom on roots, and the galls were filled with large quantities of resting spores, while bik1 mutant plants exhibited strong resistance to P. brassicae. Compared with that of the wild-type plants, the root hair and cortical infection rate of bik1 mutant were significantly reduced by about 40-50%. A considerable portion of bik1 roots failed to form typical galls. Even if some small galls were formed, they were filled with multinucleate secondary plasmodia. The bik1 plants accumulated less reactive oxygen species (ROS) at infected roots than other mutants and wild-type plants. Exogenous salicylic acid (SA) treatment alleviated the clubroot symptoms in wild-type plants, and the expression of the SA signaling marker gene PR1 was significantly increased in bik1. Both sid2 (salicylic acid induction-deficient 2) and npr1-1 [non-expresser of PR genes that regulate systemic acquired resistance (SAR)] mutants showed increased susceptibility to P. brassicae compared with wild-type plants. These results suggest that the resistance of bik1 to P. brassicae is possibly mediated by SA inducible mechanisms.
Collapse
Affiliation(s)
- Tao Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| | - Kai Bi
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| | - Zhangchao He
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| | - Zhixiao Gao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| | - Ying Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| | - Yanping Fu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| | - Jiasen Cheng
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| | - Jiatao Xie
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| | - Daohong Jiang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural UniversityWuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural UniversityWuhan, China
| |
Collapse
|
26
|
Martos S, Gallego B, Cabot C, Llugany M, Barceló J, Poschenrieder C. Zinc triggers signaling mechanisms and defense responses promoting resistance to Alternaria brassicicola in Arabidopsis thaliana. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2016; 249:13-24. [PMID: 27297986 DOI: 10.1016/j.plantsci.2016.05.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 05/02/2016] [Accepted: 05/03/2016] [Indexed: 05/24/2023]
Abstract
According to the elemental defense hypothesis the accumulation of trace elements by plants may substitute for organic defenses, while the joint effects hypothesis proposes that trace elements and organic defenses can have additive or synergistic effects against pathogens or herbivores. To evaluate these hypotheses the response of the pathosystem Alternaria brassicicola-Arabidopsis thaliana to control (2μM) and surplus (12μM) Zn was evaluated using the camalexin deficient mutant pad3-1 and mtp1-1, a mutant with impaired Zn vacuolar storage, along with the corresponding wildtypes. In vitro, a 50% inhibition of fungal growth was achieved by 440μM Zn. A. thaliana leaves could accumulate equivalent concentrations without harm. In fact, surplus Zn enhanced the resistance of A. thaliana to fungal attack in Columbia (Col-0), Wassilewskija (WS), and mtp1-1. However, surplus Zn was unable to protect pad3-1 demonstrating that Zn cannot substitute for camalexin, the main organic defense in A. thaliana. High, non phytotoxic leaf Zn concentrations enhanced the resistance to A. brassicicola of A. thaliana genotypes able to produce camalexin. This was mainly due to Zn-induced enhancement of the JA/ETH signaling pathway leading to enhanced PAD3 expression. These results support the joint effects hypothesis and highlight the importance of adequate Zn supply for reinforced pathogen resistance.
Collapse
Affiliation(s)
- Soledad Martos
- Plant Physiology Laboratory, Bioscience Faculty, C/de la Vall Moronta s.n., Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain.
| | - Berta Gallego
- Plant Physiology Laboratory, Bioscience Faculty, C/de la Vall Moronta s.n., Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain.
| | - Catalina Cabot
- Biology Department, Universitat de les Illes Balears, Carretera Valldemossa km 7.5, E-07122 Palma de Mallorca, Spain.
| | - Mercè Llugany
- Plant Physiology Laboratory, Bioscience Faculty, C/de la Vall Moronta s.n., Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain.
| | - Juan Barceló
- Plant Physiology Laboratory, Bioscience Faculty, C/de la Vall Moronta s.n., Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain.
| | - Charlotte Poschenrieder
- Plant Physiology Laboratory, Bioscience Faculty, C/de la Vall Moronta s.n., Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain.
| |
Collapse
|
27
|
French E, Kim BS, Iyer-Pascuzzi AS. Mechanisms of quantitative disease resistance in plants. Semin Cell Dev Biol 2016; 56:201-208. [PMID: 27212254 DOI: 10.1016/j.semcdb.2016.05.015] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 05/14/2016] [Accepted: 05/18/2016] [Indexed: 11/29/2022]
Abstract
Quantitative disease resistance (QDR) causes the reduction, but not absence, of disease, and is a major type of disease resistance for many crop species. QDR results in a continuous distribution of disease scores across a segregating population, and is typically due to many genes with small effects. It may also be a source of durable resistance. The past decade has seen significant progress in cloning genes underlying QDR. In this review, we focus on these recently cloned genes and identify new themes of QDR emerging from these studies.
Collapse
Affiliation(s)
- Elizabeth French
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States
| | - Bong-Suk Kim
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States
| | - Anjali S Iyer-Pascuzzi
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, United States.
| |
Collapse
|