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Maeda HA, de Oliveira MVV. VAS1-mediated nitrogen reshuffling in aromatic amino acid homeostasis. Trends Plant Sci 2024; 29:507-509. [PMID: 38480091 DOI: 10.1016/j.tplants.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/01/2024] [Accepted: 03/05/2024] [Indexed: 05/04/2024]
Abstract
Aromatic amino acids (AAAs) are essential for synthesis of proteins and numerous plant natural products, yet how plants maintain AAA homeostasis remains poorly understood. Wu et al. reported that the aminotransferase VAS1 plays a role in AAA homeostasis by transferring nitrogen from AAAs to non-proteinogenic amino acids, 3-carboxytyrosine and 3-carboxyphenylalanine.
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Affiliation(s)
- Hiroshi A Maeda
- Department of Botany, University of Wisconsin-Madison, Madison, WI 53706, USA.
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2
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Yu X, Xie Y, Luo D, Liu H, de Oliveira MVV, Qi P, Kim SI, Ortiz-Morea FA, Liu J, Chen Y, Chen S, Rodrigues B, Li B, Xue S, He P, Shan L. A phospho-switch constrains BTL2-mediated phytocytokine signaling in plant immunity. Cell 2023; 186:2329-2344.e20. [PMID: 37192618 PMCID: PMC10281528 DOI: 10.1016/j.cell.2023.04.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 02/10/2023] [Accepted: 04/18/2023] [Indexed: 05/18/2023]
Abstract
Enabling and constraining immune activation is of fundamental importance in maintaining cellular homeostasis. Depleting BAK1 and SERK4, the co-receptors of multiple pattern recognition receptors (PRRs), abolishes pattern-triggered immunity but triggers intracellular NOD-like receptor (NLR)-mediated autoimmunity with an elusive mechanism. By deploying RNAi-based genetic screens in Arabidopsis, we identified BAK-TO-LIFE 2 (BTL2), an uncharacterized receptor kinase, sensing BAK1/SERK4 integrity. BTL2 induces autoimmunity through activating Ca2+ channel CNGC20 in a kinase-dependent manner when BAK1/SERK4 are perturbed. To compensate for BAK1 deficiency, BTL2 complexes with multiple phytocytokine receptors, leading to potent phytocytokine responses mediated by helper NLR ADR1 family immune receptors, suggesting phytocytokine signaling as a molecular link connecting PRR- and NLR-mediated immunity. Remarkably, BAK1 constrains BTL2 activation via specific phosphorylation to maintain cellular integrity. Thus, BTL2 serves as a surveillance rheostat sensing the perturbation of BAK1/SERK4 immune co-receptors in promoting NLR-mediated phytocytokine signaling to ensure plant immunity.
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Affiliation(s)
- Xiao Yu
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA; National Key Laboratory of Agricultural Microbiology, Hubei Key Laboratory of Plant Pathology, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Yingpeng Xie
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Dexian Luo
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA; State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Hai Liu
- College of Life Science and Technology, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Marcos V V de Oliveira
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Peipei Qi
- National Key Laboratory of Agricultural Microbiology, Hubei Key Laboratory of Plant Pathology, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Sung-Il Kim
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA
| | | | - Jun Liu
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Yafei Chen
- National Key Laboratory of Agricultural Microbiology, Hubei Key Laboratory of Plant Pathology, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Sixue Chen
- Department of Biology, University of Mississippi, Oxford, MS 38677, USA
| | - Bárbara Rodrigues
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Bo Li
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA; National Key Laboratory of Agricultural Microbiology, Hubei Key Laboratory of Plant Pathology, Hubei Hongshan Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Shaowu Xue
- College of Life Science and Technology, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Ping He
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA.
| | - Libo Shan
- Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA.
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3
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Yokoyama R, de Oliveira MVV, Takeda-Kimura Y, Ishihara H, Alseekh S, Arrivault S, Kukshal V, Jez JM, Stitt M, Fernie AR, Maeda HA. Point mutations that boost aromatic amino acid production and CO 2 assimilation in plants. Sci Adv 2022; 8:eabo3416. [PMID: 35675400 PMCID: PMC9176744 DOI: 10.1126/sciadv.abo3416] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 04/19/2022] [Indexed: 06/15/2023]
Abstract
Aromatic compounds having unusual stability provide high-value chemicals and considerable promise for carbon storage. Terrestrial plants can convert atmospheric CO2 into diverse and abundant aromatic compounds. However, it is unclear how plants control the shikimate pathway that connects the photosynthetic carbon fixation with the biosynthesis of aromatic amino acids, the major precursors of plant aromatic natural products. This study identified suppressor of tyra2 (sota) mutations that deregulate the first step in the plant shikimate pathway by alleviating multiple effector-mediated feedback regulation in Arabidopsis thaliana. The sota mutant plants showed hyperaccumulation of aromatic amino acids accompanied by up to a 30% increase in net CO2 assimilation. The identified mutations can be used to enhance plant-based, sustainable conversion of atmospheric CO2 to high-energy and high-value aromatic compounds.
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Affiliation(s)
- Ryo Yokoyama
- Department of Botany, University of Wisconsin-Madison, Madison, WI, USA
| | | | | | - Hirofumi Ishihara
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam-Golm, Germany
| | - Saleh Alseekh
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam-Golm, Germany
| | - Stéphanie Arrivault
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam-Golm, Germany
| | - Vandna Kukshal
- Department of Biology, Washington University in St. Louis, St. Louis, MO, USA
| | - Joseph M. Jez
- Department of Biology, Washington University in St. Louis, St. Louis, MO, USA
| | - Mark Stitt
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam-Golm, Germany
| | - Alisdair R. Fernie
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Potsdam-Golm, Germany
| | - Hiroshi A. Maeda
- Department of Botany, University of Wisconsin-Madison, Madison, WI, USA
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4
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Yokoyama R, de Oliveira MVV, Kleven B, Maeda HA. The entry reaction of the plant shikimate pathway is subjected to highly complex metabolite-mediated regulation. Plant Cell 2021; 33:671-696. [PMID: 33955484 PMCID: PMC8136874 DOI: 10.1093/plcell/koaa042] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 11/19/2020] [Indexed: 05/22/2023]
Abstract
The plant shikimate pathway directs bulk carbon flow toward biosynthesis of aromatic amino acids (AAAs, i.e. tyrosine, phenylalanine, and tryptophan) and numerous aromatic phytochemicals. The microbial shikimate pathway is feedback inhibited by AAAs at the first enzyme, 3-deoxy-d-arabino-heptulosonate 7-phosphate synthase (DHS). However, AAAs generally do not inhibit DHS activities from plant extracts and how plants regulate the shikimate pathway remains elusive. Here, we characterized recombinant Arabidopsis thaliana DHSs (AthDHSs) and found that tyrosine and tryptophan inhibit AthDHS2, but not AthDHS1 or AthDHS3. Mixing AthDHS2 with AthDHS1 or 3 attenuated its inhibition. The AAA and phenylpropanoid pathway intermediates chorismate and caffeate, respectively, strongly inhibited all AthDHSs, while the arogenate intermediate counteracted the AthDHS1 or 3 inhibition by chorismate. AAAs inhibited DHS activity in young seedlings, where AthDHS2 is highly expressed, but not in mature leaves, where AthDHS1 is predominantly expressed. Arabidopsis dhs1 and dhs3 knockout mutants were hypersensitive to tyrosine and tryptophan, respectively, while dhs2 was resistant to tyrosine-mediated growth inhibition. dhs1 and dhs3 also had reduced anthocyanin accumulation under high light stress. These findings reveal the highly complex regulation of the entry reaction of the plant shikimate pathway and lay the foundation for efforts to control the production of AAAs and diverse aromatic natural products in plants.
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Affiliation(s)
- Ryo Yokoyama
- Department of Botany, University of Wisconsin–Madison, 430 Lincoln Dr. Madison, WI 53706, USA
| | - Marcos V V de Oliveira
- Department of Botany, University of Wisconsin–Madison, 430 Lincoln Dr. Madison, WI 53706, USA
| | - Bailey Kleven
- Department of Botany, University of Wisconsin–Madison, 430 Lincoln Dr. Madison, WI 53706, USA
| | - Hiroshi A Maeda
- Department of Botany, University of Wisconsin–Madison, 430 Lincoln Dr. Madison, WI 53706, USA
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Yu X, Xu G, Li B, de Souza Vespoli L, Liu H, Moeder W, Chen S, de Oliveira MVV, Ariádina de Souza S, Shao W, Rodrigues B, Ma Y, Chhajed S, Xue S, Berkowitz GA, Yoshioka K, He P, Shan L. The Receptor Kinases BAK1/SERK4 Regulate Ca 2+ Channel-Mediated Cellular Homeostasis for Cell Death Containment. Curr Biol 2019; 29:3778-3790.e8. [PMID: 31679931 DOI: 10.1016/j.cub.2019.09.018] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/22/2019] [Accepted: 09/09/2019] [Indexed: 12/21/2022]
Abstract
Cell death is a vital and ubiquitous process that is tightly controlled in all organisms. However, the mechanisms underlying precise cell death control remain fragmented. As an important shared module in plant growth, development, and immunity, Arabidopsis thaliana BRASSINOSTEROID INSENSITIVE 1-associated receptor kinase 1 (BAK1) and somatic embryogenesis receptor kinase 4 (SERK4) redundantly and negatively regulate plant cell death. By deploying an RNAi-based genetic screen for bak1/serk4 cell death suppressors, we revealed that cyclic nucleotide-gated channel 20 (CNGC20) functions as a hyperpolarization-activated Ca2+-permeable channel specifically regulating bak1/serk4 cell death. BAK1 directly interacts with and phosphorylates CNGC20 at specific sites in the C-terminal cytosolic domain, which in turn regulates CNGC20 stability. CNGC19, the closest homolog of CNGC20 with a low abundance compared with CNGC20, makes a quantitative genetic contribution to bak1/serk4 cell death only in the absence of CNGC20, supporting the biochemical data showing homo- and heteromeric assembly of the CNGC20 and CNGC19 channel complexes. Transcripts of CNGC20 and CNGC19 are elevated in bak1/serk4 compared with wild-type plants, further substantiating a critical role of homeostasis of CNGC20 and CNGC19 in cell death control. Our studies not only uncover a unique regulation of ion channel stability by cell-surface-resident receptor kinase-mediated phosphorylation but also provide evidence for fine-tuning Ca2+ channel functions in maintaining cellular homeostasis by the formation of homo- and heterotetrameric complexes.
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Affiliation(s)
- Xiao Yu
- Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Department of Plant Pathology & Microbiology, Texas A&M University, College Station, TX 77843, USA
| | - Guangyuan Xu
- Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA; College of Plant Protection, China Agricultural University, Beijing 100193, P.R. China
| | - Bo Li
- Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Department of Plant Pathology & Microbiology, Texas A&M University, College Station, TX 77843, USA; Provincial Key Laboratory of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P.R. China
| | - Luciano de Souza Vespoli
- Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Department of Plant Pathology & Microbiology, Texas A&M University, College Station, TX 77843, USA
| | - Hai Liu
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P. R. China
| | - Wolfgang Moeder
- Department of Cell and Systems Biology, Center for the Analysis of Genome Evolution and Function (CAGEF), University of Toronto, Toronto, ON M5S 3B2, Canada
| | - Sixue Chen
- Department of Biology, Genetics Institute, Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32610, USA
| | - Marcos V V de Oliveira
- Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA
| | - Suzane Ariádina de Souza
- Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Department of Plant Pathology & Microbiology, Texas A&M University, College Station, TX 77843, USA
| | - Wenyong Shao
- Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Department of Plant Pathology & Microbiology, Texas A&M University, College Station, TX 77843, USA
| | - Bárbara Rodrigues
- Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Department of Plant Pathology & Microbiology, Texas A&M University, College Station, TX 77843, USA
| | - Yi Ma
- Department of Plant Science and Landscape Architecture, University of Connecticut, Storrs, CT 06269, USA
| | - Shweta Chhajed
- Department of Biology, Genetics Institute, Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL 32610, USA
| | - Shaowu Xue
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, P. R. China
| | - Gerald A Berkowitz
- Department of Plant Science and Landscape Architecture, University of Connecticut, Storrs, CT 06269, USA
| | - Keiko Yoshioka
- Department of Cell and Systems Biology, Center for the Analysis of Genome Evolution and Function (CAGEF), University of Toronto, Toronto, ON M5S 3B2, Canada
| | - Ping He
- Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX 77843, USA; College of Plant Protection, China Agricultural University, Beijing 100193, P.R. China.
| | - Libo Shan
- Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Department of Plant Pathology & Microbiology, Texas A&M University, College Station, TX 77843, USA; College of Plant Protection, China Agricultural University, Beijing 100193, P.R. China.
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de Oliveira MVV, Jin X, Chen X, Griffith D, Batchu S, Maeda HA. Imbalance of tyrosine by modulating TyrA arogenate dehydrogenases impacts growth and development of Arabidopsis thaliana. Plant J 2019; 97:901-922. [PMID: 30457178 DOI: 10.1111/tpj.14169] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 11/09/2018] [Accepted: 11/13/2018] [Indexed: 06/09/2023]
Abstract
l-Tyrosine is an essential aromatic amino acid required for the synthesis of proteins and a diverse array of plant natural products; however, little is known on how the levels of tyrosine are controlled in planta and linked to overall growth and development. Most plants synthesize tyrosine by TyrA arogenate dehydrogenases, which are strongly feedback-inhibited by tyrosine and encoded by TyrA1 and TyrA2 genes in Arabidopsis thaliana. While TyrA enzymes have been extensively characterized at biochemical levels, their in planta functions remain uncertain. Here we found that TyrA1 suppression reduces seed yield due to impaired anther dehiscence, whereas TyrA2 knockout leads to slow growth with reticulate leaves. The tyra2 mutant phenotypes were exacerbated by TyrA1 suppression and rescued by the expression of TyrA2, TyrA1 or tyrosine feeding. Low-light conditions synchronized the tyra2 and wild-type growth, and ameliorated the tyra2 leaf reticulation. After shifting to normal light, tyra2 transiently decreased tyrosine and subsequently increased aspartate before the appearance of the leaf phenotypes. Overexpression of the deregulated TyrA enzymes led to hyper-accumulation of tyrosine, which was also accompanied by elevated aspartate and reticulate leaves. These results revealed that TyrA1 and TyrA2 have distinct and overlapping functions in flower and leaf development, respectively, and that imbalance of tyrosine, caused by altered TyrA activity and regulation, impacts growth and development of Arabidopsis. The findings provide critical bases for improving the production of tyrosine and its derived natural products, and further elucidating the coordinated metabolic and physiological processes to maintain tyrosine levels in plants.
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Affiliation(s)
- Marcos V V de Oliveira
- Department of Botany, University of Wisconsin-Madison, 430 Lincoln Drive, Madison, WI, 53706, USA
| | - Xing Jin
- Department of Botany, University of Wisconsin-Madison, 430 Lincoln Drive, Madison, WI, 53706, USA
| | - Xuan Chen
- Department of Botany, University of Wisconsin-Madison, 430 Lincoln Drive, Madison, WI, 53706, USA
| | - Daniel Griffith
- Department of Botany, University of Wisconsin-Madison, 430 Lincoln Drive, Madison, WI, 53706, USA
| | - Sai Batchu
- Department of Botany, University of Wisconsin-Madison, 430 Lincoln Drive, Madison, WI, 53706, USA
- Department of Biology, The College of New Jersey, Biology Building, 2000 Pennington Road, Ewing, NJ, 08628, USA
| | - Hiroshi A Maeda
- Department of Botany, University of Wisconsin-Madison, 430 Lincoln Drive, Madison, WI, 53706, USA
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de Oliveira MVV, Intorne AC, Vespoli LDS, Andrade LF, Pereira LDM, Rangel PL, de Souza Filho GA. Essential role of K + uptake permease (Kup) for resistance to sucrose-induced stress in Gluconacetobacter diazotrophicus PAl 5. Environ Microbiol Rep 2017; 9:85-90. [PMID: 27886654 DOI: 10.1111/1758-2229.12503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 11/16/2016] [Indexed: 06/06/2023]
Abstract
Microorganisms are constantly challenged by stressful conditions, such as sugar-rich environments. Such environments can cause an imbalance of biochemical activities and compromise cell multiplication. Gluconacetobacter diazotrophicus PAl 5 is among the most sugar-tolerant bacteria, capable of growing in the presence of up to 876 mM sucrose. However, the molecular mechanisms involved in its response to high sucrose remain unknown. The present work aimed to identify sucrose-induced stress resistance genes in G. diazotrophicus PAl 5. Screening of a Tn5 transposon insertion library identified a mutant that was severely compromised in its resistance to high sucrose concentrations. Molecular characterization revealed that the mutation affected the kupA gene, which encodes a K+ uptake transporter (KupA). Functional complementation of the mutant with the wild type kupA gene recovered the sucrose-induced stress resistance phenotype. High sucrose resistance assay, under different potassium concentrations, revealed that KupA acts as a high-affinity K+ transporter, which is essential for resistance to sucrose-induced stress, when extracellular potassium levels are low. This study is the first to show the essential role of the KupA protein for resistance to sucrose-induced stress in bacteria by acting as a high-affinity potassium transporter in G. diazotrophicus PAl 5.
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Affiliation(s)
- Marcos V V de Oliveira
- Laboratório de Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, UENF, Campos dos Goytacazes, RJ, Brazil
| | - Aline C Intorne
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Universidade Estadual do Norte Fluminense Darcy Ribeiro, UENF, Campos dos Goytacazes, RJ, Brazil
| | - Luciano de S Vespoli
- Laboratório de Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, UENF, Campos dos Goytacazes, RJ, Brazil
| | - Leandro F Andrade
- Laboratório de Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, UENF, Campos dos Goytacazes, RJ, Brazil
| | - Leandro de M Pereira
- Laboratório de Biologia Parasitária, Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS, Rio Grande do Sul, Brazil
| | - Patrícia L Rangel
- Laboratório de Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, UENF, Campos dos Goytacazes, RJ, Brazil
| | - Gonçalo A de Souza Filho
- Laboratório de Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, UENF, Campos dos Goytacazes, RJ, Brazil
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Feng B, Liu C, de Oliveira MVV, Intorne AC, Li B, Babilonia K, de Souza Filho GA, Shan L, He P. Correction: Protein Poly(ADP-ribosyl)ation Regulates Arabidopsis Immune Gene Expression and Defense Responses. PLoS Genet 2016; 12:e1005294. [PMID: 27611450 PMCID: PMC5017701 DOI: 10.1371/journal.pgen.1005294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Meng X, Zhou J, Tang J, Li B, de Oliveira MVV, Chai J, He P, Shan L. Ligand-Induced Receptor-like Kinase Complex Regulates Floral Organ Abscission in Arabidopsis. Cell Rep 2016; 14:1330-1338. [PMID: 26854226 DOI: 10.1016/j.celrep.2016.01.023] [Citation(s) in RCA: 121] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 11/30/2015] [Accepted: 01/04/2016] [Indexed: 01/09/2023] Open
Abstract
Abscission is a developmental process that enables plants to shed unwanted organs. In Arabidopsis, the floral organ abscission is regulated by a signaling pathway consisting of the peptide ligand IDA, the receptor-like kinases (RLKs) HAE and HSL2, and a downstream MAP kinase (MAPK) cascade. However, little is known about the molecular link between ligand-receptor pairs and intracellular signaling. Here, we report that the SERK family RLKs function redundantly in regulating floral organ abscission downstream of IDA and upstream of the MAPK cascade. IDA induces heterodimerization of HAE/HSL2 and SERKs, which transphosphorylate each other. The SERK3 residues mediating its interaction with the immune receptor FLS2 and the brassinosteroid receptor BRI1 are also required for IDA-induced HAE/HSL2-SERK3 interaction, suggesting SERKs serve as co-receptors of HAE/HSL2 in perceiving IDA. Thus, our study reveals the signaling activation mechanism in floral organ abscission by IDA-induced HAE/HSL2-SERK complex formation accompanied by transphosphorylation.
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Affiliation(s)
- Xiangzong Meng
- Department of Biochemistry and Biophysics, Institute for Plant Genomics and Biotechnology, Texas A&M University, College Station, TX 77843, USA
| | - Jinggeng Zhou
- Department of Biochemistry and Biophysics, Institute for Plant Genomics and Biotechnology, Texas A&M University, College Station, TX 77843, USA
| | - Jiao Tang
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Bo Li
- Department of Plant Pathology and Microbiology, Institute for Plant Genomics and Biotechnology, Texas A&M University, College Station, TX 77843, USA
| | - Marcos V V de Oliveira
- Department of Biochemistry and Biophysics, Institute for Plant Genomics and Biotechnology, Texas A&M University, College Station, TX 77843, USA
| | - Jijie Chai
- Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Ping He
- Department of Biochemistry and Biophysics, Institute for Plant Genomics and Biotechnology, Texas A&M University, College Station, TX 77843, USA
| | - Libo Shan
- Department of Plant Pathology and Microbiology, Institute for Plant Genomics and Biotechnology, Texas A&M University, College Station, TX 77843, USA.
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de Oliveira MVV, Xu G, Li B, de Souza Vespoli L, Meng X, Chen X, Yu X, de Souza SA, Intorne AC, de A. Manhães AME, Musinsky AL, Koiwa H, de Souza Filho GA, Shan L, He P. Specific control of Arabidopsis BAK1/SERK4-regulated cell death by protein glycosylation. Nat Plants 2016; 2:15218. [PMID: 27250875 PMCID: PMC5572757 DOI: 10.1038/nplants.2015.218] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Accepted: 12/07/2015] [Indexed: 05/03/2023]
Abstract
Precise control of cell death is essential for the survival of all organisms. Arabidopsis thaliana BRASSINOSTEROID INSENSITIVE 1-associated receptor kinase 1 (BAK1) and somatic embryogenesis receptor kinase 4 (SERK4) redundantly and negatively regulate cell death through elusive mechanisms. By deploying a genetic screen for suppressors of cell death triggered by virus-induced gene silencing of BAK1/SERK4 on Arabidopsis knockout collections, we identified STT3a, a protein involved in N-glycosylation modification, as an important regulator of bak1/serk4 cell death. Systematic investigation of glycosylation pathway and endoplasmic reticulum (ER) quality control (ERQC) components revealed distinct and overlapping mechanisms of cell death regulated by BAK1/SERK4 and their interacting protein BIR1. Genome-wide transcriptional analysis revealed the activation of members of cysteine-rich receptor-like kinase (CRK) genes in the bak1/serk4 mutant. Ectopic expression of CRK4 induced STT3a/N-glycosylation-dependent cell death in Arabidopsis and Nicotiana benthamiana. Therefore, N-glycosylation and specific ERQC components are essential to activate bak1/serk4 cell death, and CRK4 is likely to be among client proteins of protein glycosylation involved in BAK1/SERK4-regulated cell death.
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Affiliation(s)
- Marcos V. V. de Oliveira
- Department of Biochemistry & Biophysics, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
- Department of Plant Pathology & Microbiology, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
| | - Guangyuan Xu
- Department of Biochemistry & Biophysics, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
- Molecular and Environmental Plant Sciences, Texas A&M University, College Station, Texas 77843, USA
| | - Bo Li
- Department of Plant Pathology & Microbiology, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
| | - Luciano de Souza Vespoli
- Department of Plant Pathology & Microbiology, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
- Center of Biosciences & Biotechnology, Darcy Ribeiro State University of North Rio de Janeiro, 28013-602 Brazil
| | - Xiangzong Meng
- Department of Biochemistry & Biophysics, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
| | - Xin Chen
- Department of Plant Pathology & Microbiology, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
| | - Xiao Yu
- Department of Plant Pathology & Microbiology, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
| | - Suzane Ariádina de Souza
- Department of Plant Pathology & Microbiology, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
- Center of Biosciences & Biotechnology, Darcy Ribeiro State University of North Rio de Janeiro, 28013-602 Brazil
| | - Aline C. Intorne
- Department of Plant Pathology & Microbiology, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
- Center of Biosciences & Biotechnology, Darcy Ribeiro State University of North Rio de Janeiro, 28013-602 Brazil
| | - Ana Marcia E. de A. Manhães
- Department of Plant Pathology & Microbiology, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
- Center of Biosciences & Biotechnology, Darcy Ribeiro State University of North Rio de Janeiro, 28013-602 Brazil
| | - Abbey L. Musinsky
- Department of Plant Pathology & Microbiology, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
- Medical Microbiology and Immunology Major, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - Hisashi Koiwa
- Molecular and Environmental Plant Sciences, Texas A&M University, College Station, Texas 77843, USA
- Department of Horticultural Sciences, Texas A&M University, College Station, Texas 77843, USA
| | - Gonçalo A. de Souza Filho
- Center of Biosciences & Biotechnology, Darcy Ribeiro State University of North Rio de Janeiro, 28013-602 Brazil
| | - Libo Shan
- Department of Plant Pathology & Microbiology, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
- Molecular and Environmental Plant Sciences, Texas A&M University, College Station, Texas 77843, USA
- Correspondence and requests for materials should be addressed to L.S. ; and P.H.
| | - Ping He
- Department of Biochemistry & Biophysics, Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas 77843, USA
- Molecular and Environmental Plant Sciences, Texas A&M University, College Station, Texas 77843, USA
- Correspondence and requests for materials should be addressed to L.S. ; and P.H.
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11
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Feng B, Liu C, de Oliveira MVV, Intorne AC, Li B, Babilonia K, de Souza Filho GA, Shan L, He P. Protein poly(ADP-ribosyl)ation regulates arabidopsis immune gene expression and defense responses. PLoS Genet 2015; 11:e1004936. [PMID: 25569773 PMCID: PMC4287526 DOI: 10.1371/journal.pgen.1004936] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Accepted: 12/04/2014] [Indexed: 12/22/2022] Open
Abstract
Perception of microbe-associated molecular patterns (MAMPs) elicits transcriptional reprogramming in hosts and activates defense to pathogen attacks. The molecular mechanisms underlying plant pattern-triggered immunity remain elusive. A genetic screen identified Arabidopsis poly(ADP-ribose) glycohydrolase 1 (atparg1) mutant with elevated immune gene expression upon multiple MAMP and pathogen treatments. Poly(ADP-ribose) glycohydrolase (PARG) is predicted to remove poly(ADP-ribose) polymers on acceptor proteins modified by poly(ADP-ribose) polymerases (PARPs) with three PARPs and two PARGs in Arabidopsis genome. AtPARP1 and AtPARP2 possess poly(ADP-ribose) polymerase activity, and the activity of AtPARP2 was enhanced by MAMP treatment. AtPARG1, but not AtPARG2, carries glycohydrolase activity in vivo and in vitro. Importantly, mutation (G450R) in atparg1 blocks its activity and the corresponding residue is highly conserved and essential for human HsPARG activity. Consistently, mutant atparp1atparp2 plants exhibited compromised immune gene activation and enhanced susceptibility to pathogen infections. Our study indicates that protein poly(ADP-ribosyl)ation plays critical roles in plant immune gene expression and defense to pathogen attacks. Fine-tuning of gene expression is a key feature of successful immune responses. However, the underlying mechanisms are not fully understood. Through a genetic screen in model plant Arabidopsis, we reveal that protein poly(ADP-ribosyl)ation (PARylation) post-translational modification plays a pivotal role in controlling plant immune gene expression and defense to pathogen attacks. PARylation is primarily mediated by poly(ADP-ribose) polymerase (PARP), which transfers ADP-ribose moieties from NAD+ to acceptor proteins. The covalently attached poly(ADP-ribose) polymers on the accept proteins could be hydrolyzed by poly(ADP-ribose) glycohydrolase (PARG). We further show that members of Arabidopsis PARPs and PARGs possess differential in vivo and in vitro enzymatic activities. Importantly, the Arabidopsis parp mutant displayed reduced, whereas parg mutant displayed enhanced, immune gene activation and immunity to pathogen infection. Moreover, Arabidopsis PARP2 activity is elevated upon pathogen signal perception. Compared to the lethality of their mammalian counterparts, the viability and normal growth of Arabidopsis parp and parg null mutants provide a unique genetic system to understand protein PARylation in diverse biological processes at the whole organism level.
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Affiliation(s)
- Baomin Feng
- Department of Biochemistry and Biophysics, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas, United States of America
| | - Chenglong Liu
- Department of Plant Pathology and Microbiology, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas, United States of America
| | - Marcos V. V. de Oliveira
- Department of Biochemistry and Biophysics, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas, United States of America
- Department of Plant Pathology and Microbiology, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas, United States of America
- Center of Biosciences and Biotechnology, Darcy Ribeiro State University of Northern of Rio de Janeiro, Brazil
| | - Aline C. Intorne
- Department of Plant Pathology and Microbiology, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas, United States of America
- Center of Biosciences and Biotechnology, Darcy Ribeiro State University of Northern of Rio de Janeiro, Brazil
| | - Bo Li
- Department of Plant Pathology and Microbiology, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas, United States of America
| | - Kevin Babilonia
- Department of Biochemistry and Biophysics, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas, United States of America
- Department of Biology, University of Puerto Rico, Mayagüez Campus, Mayagüez, Puerto Rico
| | | | - Libo Shan
- Department of Plant Pathology and Microbiology, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas, United States of America
| | - Ping He
- Department of Biochemistry and Biophysics, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, Texas, United States of America
- * E-mail:
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12
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Manhães AMEDA, de Oliveira MVV, Shan L. Establishment of an efficient virus-induced gene silencing (VIGS) assay in Arabidopsis by Agrobacterium-mediated rubbing infection. Methods Mol Biol 2015; 1287:235-241. [PMID: 25740369 DOI: 10.1007/978-1-4939-2453-0_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Several VIGS protocols have been established for high-throughput functional genomic screens as it bypasses the time-consuming and laborious process of generation of transgenic plants. The silencing efficiency in this approach is largely hindered by a technically demanding step in which the first pair of newly emerged true leaves at the 2-week-old stage are infiltrated with a needleless syringe. To further optimize VIGS efficiency and achieve rapid inoculation for a large-scale functional genomic study, here we describe a protocol of an efficient VIGS assay in Arabidopsis using Agrobacterium-mediated rubbing infection. The Agrobacterium inoculation is performed by simply rubbing the leaves with Filter Agent Celite(®) 545. The highly efficient and uniform silencing effect was indicated by the development of a visibly albino phenotype due to silencing of the Cloroplastos alterados 1 (CLA1) gene in the newly emerged leaves. In addition, the albino phenotype could be observed in stems and flowers, indicating its potential application for gene functional studies in the late vegetative development and flowering stages.
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Affiliation(s)
- Ana Marcia E de A Manhães
- Center of Biosciences & Biotechnology, North Rio de Janeiro State University, Campos dos Goytacazes, RJ, 28013-602, Brazil
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13
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Li F, Cheng C, Cui F, de Oliveira MVV, Yu X, Meng X, Intorne AC, Babilonia K, Li M, Li B, Chen S, Ma X, Xiao S, Zheng Y, Fei Z, Metz RP, Johnson CD, Koiwa H, Sun W, Li Z, de Souza Filho GA, Shan L, He P. Modulation of RNA polymerase II phosphorylation downstream of pathogen perception orchestrates plant immunity. Cell Host Microbe 2014; 16:748-58. [PMID: 25464831 DOI: 10.1016/j.chom.2014.10.018] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 08/22/2014] [Accepted: 10/24/2014] [Indexed: 01/03/2023]
Abstract
Perception of microbe-associated molecular patterns (MAMPs) elicits host transcriptional reprogramming as part of the immune response. Although pathogen perception is well studied, the signaling networks orchestrating immune gene expression remain less clear. In a genetic screen for components involved in the early immune gene transcription reprogramming, we identified Arabidopsis RNA polymerase II C-terminal domain (CTD) phosphatase-like 3 (CPL3) as a negative regulator of immune gene expression. MAMP perception induced rapid and transient cyclin-dependent kinase C (CDKC)-mediated phosphorylation of Arabidopsis CTD. The CDKCs, which are in turn phosphorylated and activated by a canonical MAP kinase (MAPK) cascade, represent a point of signaling convergence downstream of multiple immune receptors. CPL3 directly dephosphorylated CTD to counteract MAPK-mediated CDKC regulation. Thus, modulation of the phosphorylation dynamics of eukaryotic RNA polymerase II transcription machinery by MAPKs, CTD kinases, and phosphatases constitutes an essential mechanism for rapid orchestration of host immune gene expression and defense upon pathogen attacks.
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Affiliation(s)
- Fangjun Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; Department of Plant Pathology & Microbiology, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA
| | - Cheng Cheng
- Department of Biochemistry & Biophysics, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA
| | - Fuhao Cui
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; Department of Plant Pathology & Microbiology, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA
| | - Marcos V V de Oliveira
- Department of Plant Pathology & Microbiology, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Department of Biochemistry & Biophysics, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Center of Biosciences & Biotechnology, North Rio de Janeiro State University, 28013-602, Brazil
| | - Xiao Yu
- Department of Plant Pathology & Microbiology, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA
| | - Xiangzong Meng
- Department of Biochemistry & Biophysics, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA
| | - Aline C Intorne
- Department of Plant Pathology & Microbiology, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Center of Biosciences & Biotechnology, North Rio de Janeiro State University, 28013-602, Brazil
| | - Kevin Babilonia
- Department of Biochemistry & Biophysics, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA; Department of Biology, University of Puerto Rico, Mayagüez Campus, Mayagüez, PR 00680, USA
| | - Maoying Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; Department of Biochemistry & Biophysics, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA
| | - Bo Li
- Department of Plant Pathology & Microbiology, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA
| | - Sixue Chen
- Department of Biology, University of Florida, Gainesville, FL 32610, USA
| | - Xianfeng Ma
- Institute for Bioscience & Biotechnology Research, University of Maryland, Rockville, MD 20850; Department of Plant Science & Landscape Architecture, University of Maryland, College Park, MD 20742, USA
| | - Shunyuan Xiao
- Institute for Bioscience & Biotechnology Research, University of Maryland, Rockville, MD 20850; Department of Plant Science & Landscape Architecture, University of Maryland, College Park, MD 20742, USA
| | - Yi Zheng
- Boyce Thompson Institute for Plant Research, Cornell University, Ithaca, NY 14853, USA
| | - Zhangjun Fei
- Boyce Thompson Institute for Plant Research, Cornell University, Ithaca, NY 14853, USA
| | - Richard P Metz
- Genomics and Bioinformatics Services, Texas A&M AgriLife Research, College Station, TX 77845, USA
| | - Charles D Johnson
- Genomics and Bioinformatics Services, Texas A&M AgriLife Research, College Station, TX 77845, USA
| | - Hisashi Koiwa
- Vegetable and Fruit Improvement Center, Department of Horticultural Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Wenxian Sun
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Zhaohu Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | | | - Libo Shan
- Department of Plant Pathology & Microbiology, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA.
| | - Ping He
- Department of Biochemistry & Biophysics, and Institute for Plant Genomics & Biotechnology, Texas A&M University, College Station, TX 77843, USA.
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