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Tian B, Pang Y, Gao Y, Meng Q, Xin L, Sun C, Tang X, Wang Y, Li Z, Lin H, Wang L. A pan-cancer analysis of the oncogenic role of Golgi transport 1B in human tumors. J Transl Int Med 2023; 11:433-448. [PMID: 38130634 PMCID: PMC10732491 DOI: 10.2478/jtim-2023-0002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Abstract
Background Owing to the aggressiveness and treatment-refractory nature of cancer, ideal candidates for early diagnosis and treatment are needed. Golgi transport 1B (GOLT1B) has been associated with cellular malignant behaviors and immune responses in colorectal and lung cancer, but a systematic pan-cancer analysis on GOLT1B has not been conducted. Methods The expression status and clinical association of GOLT1B in The Cancer Genome Atlas (TCGA) were analyzed. Genetic and methylation alterations in GOLT1B were explored. The relationship between GOLT1B and immune cell infiltration was also investigated. Genes related to GOLT1B expression were selected and analyzed. Results GOLT1B was highly expressed in most tumors, and there was a positive correlation between GOLT1B expression and clinical pathological parameters. High expression levels of GOLT1B have been associated with poor prognosis of most cancers. Copy number amplification was the primary type of GOLT1B genetic alterations, which was related to the prognosis of pan-cancer cases. There were different levels of GOLT1B promoter methylation across cancer types. The methylation level of the probe cg07371838 and cg25816357 was closely associated with prognosis in diverse cancers. There was also a positive correlation between GOLT1B genetic alterations and CD4+ T lymphocytes, especially the Th2 subset, as well as between GOLT1B expression and the estimated infiltration value of cancer-associated fibroblasts. Serine/threonine kinase receptor-associated protein (STRAP), integrator complex subunit 13 (INTS13), and ethanolamine kinase 1 (ETNK1) were the most relevant genes for GOLT1B expression, and their interactions with GOLT1B were involved in regulating the transforming growth factor (TGF)-β receptor signaling pathway and epithelial-mesenchymal transition (EMT). Conclusions This pan-cancer analysis provided a comprehensive understanding of the oncogenic role of GOLT1B, highlighting a potential mechanism whereby GOLT1B influences the tumor microenvironment, as well as cancer immunotherapy.
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Affiliation(s)
- Bo Tian
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai200433, China
| | - Yanan Pang
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai200433, China
- Shanghai Institute of Pancreatic Diseases, Shanghai200433, China
| | - Ye Gao
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai200433, China
| | - Qianqian Meng
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai200433, China
| | - Lei Xin
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai200433, China
| | - Chang Sun
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai200433, China
| | - Xin Tang
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai200433, China
| | - Yilin Wang
- Georgetown Preparatory School, North Bethesda20852, MD, USA
| | - Zhaoshen Li
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai200433, China
| | - Han Lin
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai200433, China
| | - Luowei Wang
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai200433, China
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Zhu X, Yin J, Guo H, Wang Y, Ma B. Vesicle trafficking in rice: too little is known. FRONTIERS IN PLANT SCIENCE 2023; 14:1263966. [PMID: 37790794 PMCID: PMC10543891 DOI: 10.3389/fpls.2023.1263966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 08/28/2023] [Indexed: 10/05/2023]
Abstract
The vesicle trafficking apparatus is a fundamental machinery to maintain the homeostasis of membrane-enclosed organelles in eukaryotic cells. Thus, it is broadly conserved in eukaryotes including plants. Intensive studies in the model organisms have produced a comprehensive picture of vesicle trafficking in yeast and human. However, with respect to the vesicle trafficking of plants including rice, our understanding of the components and their coordinated regulation is very limited. At present, several vesicle trafficking apparatus components and cargo proteins have been identified and characterized in rice, but there still remain large unknowns concerning the organization and function of the rice vesicle trafficking system. In this review, we outline the main vesicle trafficking pathways of rice based on knowledge obtained in model organisms, and summarize current advances of rice vesicle trafficking. We also propose to develop methodologies applicable to rice and even other crops for further exploring the mysteries of vesicle trafficking in plants.
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Affiliation(s)
- Xiaobo Zhu
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University at Wenjiang, Chengdu, Sichuan, China
| | - Junjie Yin
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University at Wenjiang, Chengdu, Sichuan, China
| | - Hongming Guo
- Environment-friendly Crop Germplasm Innovation and Genetic Improvement Key Laboratory of Sichuan Province, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Yuping Wang
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University at Wenjiang, Chengdu, Sichuan, China
| | - Bingtian Ma
- State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Rice Research Institute, Sichuan Agricultural University at Wenjiang, Chengdu, Sichuan, China
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Zhao Y, Zhang C, Zhao Y, Peng Y, Ran X, Guo H, Shen Y, Liu W, Ding Y, Tang S. Multiple regulators were involved in glutelin synthesis and subunit accumulation in response to temperature and nitrogen during rice grain-filling stage. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 202:107967. [PMID: 37597275 DOI: 10.1016/j.plaphy.2023.107967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 08/12/2023] [Indexed: 08/21/2023]
Abstract
Rice glutelin is sensitive to temperature and nitrogen, however, the regulatory mechanism of glutelin response to temperature and nitrogen is unclear. In this study, we conducted the open field warming experiment by the Free-air temperature enhancement facility and application of nitrogen during grain filling. In three-year field warming experiments, glutelin relative content was significantly increased under elevated temperature and application of nitrogen. Temperature and nitrogen and their interaction increased the glutelin accumulation rate in the early and middle grain filling stages (10-25d after flowering), but decreased the glutelin accumulation rate in the middle and late grain filling stages (25-45d after flowering). Elevated temperature promoted pro-glutelin levels whereas application of nitrogen under warming increased the amount of α-glutelin. At the transcriptional level, the expression levels of the glutelin-encoding genes and protein disulphide isomerase-like enzyme (PDIL1-1), glutelin precursor accumulation 4 (GPA4), glutelin precursor mutant 6 (GPA2), glutelin precursor accumulation 3 (GPA3) and vacuolar processing enzyme (OsVPE1) of glutelin folding, transport and accumulation-related genes were up-regulated by nitrogen under natural temperature as early as 5d after flowering. However, elevated temperature up-regulated glutelin-encoding genes before 20d after flowering, and the expression of endoplasmic reticulum chaperone (OsBip1), OsPDIL1-1, small GTPase gene (GPA1), GPA2-GPA4 and OsVPE1 were significantly increased post 20d after flowering under warming. In addition, the increase in glutelin content worsened grain quality, particularly chalkiness and eating quality. Overall, the results were helpful to understand glutelin accumulation and provide a theoretical basis for further study the relationship between rice quality and glutelin under global warming.
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Affiliation(s)
- Yufei Zhao
- College of Agronomy, Nanjing Agricultural University, 210095, Nanjing, PR China
| | - Chen Zhang
- College of Agronomy, Nanjing Agricultural University, 210095, Nanjing, PR China
| | - Yigong Zhao
- College of Agronomy, Nanjing Agricultural University, 210095, Nanjing, PR China
| | - Yuxuan Peng
- College of Agronomy, Nanjing Agricultural University, 210095, Nanjing, PR China
| | - Xuan Ran
- College of Agronomy, Nanjing Agricultural University, 210095, Nanjing, PR China
| | - Hao Guo
- College of Agronomy, Nanjing Agricultural University, 210095, Nanjing, PR China
| | - Yingying Shen
- College of Agronomy, Nanjing Agricultural University, 210095, Nanjing, PR China
| | - Wenzhe Liu
- College of Agronomy, Nanjing Agricultural University, 210095, Nanjing, PR China
| | - Yanfeng Ding
- College of Agronomy, Nanjing Agricultural University, 210095, Nanjing, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production, 210095, Nanjing, PR China
| | - She Tang
- College of Agronomy, Nanjing Agricultural University, 210095, Nanjing, PR China; Jiangsu Collaborative Innovation Center for Modern Crop Production, 210095, Nanjing, PR China.
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4
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Min CW, Gupta R, Jung JY, Rakwal R, Kang JW, Cho JH, Jeon JS, Kim ST. Comparative Proteome-wide Characterization of Three Different Tissues of High-Protein Mutant and Wild Type Unravels Protein Accumulation Mechanisms in Rice Seeds. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:12357-12367. [PMID: 37549031 DOI: 10.1021/acs.jafc.3c01698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
Improving the proteins and amino acid contents of rice seeds is one of the prime objectives of plant breeders. We recently developed an EMS mutant/high-protein mutant (HPM) of rice that exhibits 14.8% of the total protein content as compared to its parent Dharial (wild-type), which shows only 9.3% protein content in their mature seeds. However, the mechanisms underlying the higher protein accumulation in these HPM seeds remain largely elusive. Here, we utilized high-throughput proteomics to examine the differences in the proteome profiles of the embryo, endosperm, and bran tissues of Dharial and HPM seeds. Utilizing a label-free quantitative proteomic and subsequent functional analyses of the identified proteins revealed that nitrogen compound biosynthesis, intracellular transport, protein/amino acid synthesis, and photosynthesis-related proteins were specifically enriched in the endosperm and bran of the high-protein mutant seed. Our data have uncovered proteome-wide changes highlighting various functions of metabolic pathways associated with protein accumulation in rice seeds.
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Affiliation(s)
- Cheol Woo Min
- Department of Plant Bioscience, Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
| | - Ravi Gupta
- College of General Education, Kookmin University, Seoul 02707, Republic of Korea
| | - Ju-Young Jung
- Department of Plant Bioscience, Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
| | - Randeep Rakwal
- Faculty of Health and Sport Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8574, Japan
- Research Laboratory for Biotechnology and Biochemistry (RLABB), GPO 13265, Kathmandu 44600, Nepal
| | - Ju-Won Kang
- Department of Southern Area Crop Science, National Institute of Crop Science, Rural Development Administration (RDA), Miryang 50424, Republic of Korea
| | - Jun-Hyeon Cho
- Sangju Substation, National Institute of Crop Science, Rural Development Administration (RDA), Sangju 37139, Republic of Korea
| | - Jong-Seong Jeon
- Graduate School of Biotechnology and Crop Biotech Institute, Kyung Hee University, Yongin 17104, Republic of Korea
| | - Sun Tae Kim
- Department of Plant Bioscience, Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Republic of Korea
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Wu M, Cai M, Zhai R, Ye J, Zhu G, Yu F, Ye S, Zhang X. A mitochondrion-associated PPR protein, WBG1, regulates grain chalkiness in rice. FRONTIERS IN PLANT SCIENCE 2023; 14:1136849. [PMID: 36968383 PMCID: PMC10033517 DOI: 10.3389/fpls.2023.1136849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Rice kernel quality has vital commercial value. Grain chalkiness deteriorates rice's appearance and palatability. However, the molecular mechanisms that govern grain chalkiness remain unclear and may be regulated by many factors. In this study, we identified a stable hereditary mutant, white belly grain 1 (wbg1), which has a white belly in its mature grains. The grain filling rate of wbg1 was lower than that of the wild type across the whole filling period, and the starch granules in the chalky part were oval or round and loosely arranged. Map-based cloning showed that wbg1 was an allelic mutant of FLO10, which encodes a mitochondrion-targeted P-type pentatricopeptide repeat protein. Amino acid sequence analysis found that two PPR motifs present in the C-terminal of WBG1 were lost in wbg1. This deletion reduced the splicing efficiency of nad1 intron 1 to approximately 50% in wbg1, thereby partially reducing the activity of complex I and affecting ATP production in wbg1 grains. Furthermore, haplotype analysis showed that WBG1 was associated with grain width between indica and japonica rice varieties. These results suggested that WBG1 influences rice grain chalkiness and grain width by regulating the splicing efficiency of nad1 intron 1. This deepens understanding of the molecular mechanisms governing rice grain quality and provides theoretical support for molecular breeding to improve rice quality.
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Affiliation(s)
- Mingming Wu
- Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Maohong Cai
- College of Life and Environmental Science, Hangzhou Normal University, Hangzhou, China
| | - Rongrong Zhai
- Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jing Ye
- Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Guofu Zhu
- Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Faming Yu
- Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Shenghai Ye
- Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Xiaoming Zhang
- Institute of Crop and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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6
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Zhang L, Si Q, Yang K, Zhang W, Okita TW, Tian L. mRNA Localization to the Endoplasmic Reticulum in Plant Endosperm Cells. Int J Mol Sci 2022; 23:13511. [PMID: 36362297 PMCID: PMC9656906 DOI: 10.3390/ijms232113511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/30/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022] Open
Abstract
Subcellular mRNA localization is an evolutionarily conserved mechanism to spatially and temporally drive local translation and, in turn, protein targeting. Hence, this mechanism achieves precise control of gene expression and establishes functional and structural networks during cell growth and development as well as during stimuli response. Since its discovery in ascidian eggs, mRNA localization has been extensively studied in animal and yeast cells. Although our knowledge of subcellular mRNA localization in plant cells lags considerably behind other biological systems, mRNA localization to the endoplasmic reticulum (ER) has also been well established since its discovery in cereal endosperm cells in the early 1990s. Storage protein mRNA targeting to distinct subdomains of the ER determines efficient accumulation of the corresponding proteins in different endosomal storage sites and, in turn, underlies storage organelle biogenesis in cereal grains. The targeting process requires the presence of RNA localization elements, also called zipcodes, and specific RNA-binding proteins that recognize and bind these zipcodes and recruit other factors to mediate active transport. Here, we review the current knowledge of the mechanisms and functions of mRNA localization to the ER in plant cells and address directions for future research.
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Affiliation(s)
- Laining Zhang
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 310007, China
| | - Qidong Si
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 310007, China
| | - Kejie Yang
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 310007, China
| | - Wenwei Zhang
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 310007, China
| | - Thomas W. Okita
- Institute of Biological Chemistry, Washington State University, Pullman, WA 99164, USA
| | - Li Tian
- Collaborative Innovation Center for Efficient and Green Production of Agriculture in Mountainous Areas of Zhejiang Province, College of Horticulture Science, Zhejiang A&F University, Hangzhou 310007, China
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Zheng P, Zheng C, Otegui MS, Li F. Endomembrane mediated-trafficking of seed storage proteins: from Arabidopsis to cereal crops. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:1312-1326. [PMID: 34849750 DOI: 10.1093/jxb/erab519] [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: 07/31/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
Seed storage proteins (SSPs) are of great importance in plant science and agriculture, particularly in cereal crops, due to their nutritional value and their impact on food properties. During seed maturation, massive amounts of SSPs are synthesized and deposited either within protein bodies derived from the endoplasmic reticulum, or into specialized protein storage vacuoles (PSVs). The processing and trafficking of SSPs vary among plant species, tissues, and even developmental stages, as well as being influenced by SSP composition. The different trafficking routes, which affect the amount of SSPs that seeds accumulate and their composition and modifications, rely on a highly dynamic and functionally specialized endomembrane system. Although the general steps in SSP trafficking have been studied in various plants, including cereals, the detailed underlying molecular and regulatory mechanisms are still elusive. In this review, we discuss the main endomembrane routes involved in SSP trafficking to the PSV in Arabidopsis and other eudicots, and compare and contrast the SSP trafficking pathways in major cereal crops, particularly in rice and maize. In addition, we explore the challenges and strategies for analyzing the endomembrane system in cereal crops.
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Affiliation(s)
- Ping Zheng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, China
- School of Life Science, Huizhou University, Huizhou, China
| | - Chunyan Zheng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Marisa S Otegui
- Department of Botany, Center for Quantitative Cell Imaging, University of Wisconsin-Madison, WIUSA
| | - Faqiang Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou, China
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8
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Butterworth J, Gregoire D, Peter M, Roca Suarez AA, Desandré G, Simonin Y, Virzì A, Zine El Aabidine A, Guivarch M, Andrau JC, Bertrand E, Assenat E, Lupberger J, Hibner U. GOLT1B Activation in Hepatitis C Virus-Infected Hepatocytes Links ER Trafficking and Viral Replication. Pathogens 2021; 11:pathogens11010046. [PMID: 35055994 PMCID: PMC8781247 DOI: 10.3390/pathogens11010046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/16/2021] [Accepted: 12/20/2021] [Indexed: 11/24/2022] Open
Abstract
Chronic hepatitis C carries a high risk of development of hepatocellular carcinoma (HCC), triggered by both direct and indirect effects of the virus. We examined cell-autonomous alterations in gene expression profiles associated with hepatitis C viral presence. Highly sensitive single molecule fluorescent in situ hybridization applied to frozen tissue sections of a hepatitis C patient allowed the delineation of clusters of infected hepatocytes. Laser microdissection followed by RNAseq analysis of hepatitis C virus (HCV)-positive and -negative regions from the tumoral and non-tumoral tissues from the same patient revealed HCV-related deregulation of expression of genes in the tumor and in the non-tumoral tissue. However, there was little overlap between both gene sets. Our interest in alterations that increase the probability of tumorigenesis prompted the examination of genes whose expression was increased by the virus in the non-transformed cells and whose level remained high in the tumor. This strategy led to the identification of a novel HCV target gene: GOLT1B, which encodes a protein involved in ER-Golgi trafficking. We further show that GOLT1B expression is induced during the unfolded protein response, that its presence is essential for efficient viral replication, and that its expression is correlated with poor outcome in HCC.
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Affiliation(s)
- Jacqueline Butterworth
- Institut de Génétique Moléculaire de Montpellier, University of Montpellier, CNRS, 34293 Montpellier, France; (J.B.); (M.P.); (G.D.); (Y.S.); (A.Z.E.A.); (J.-C.A.); (E.B.); (E.A.)
| | - Damien Gregoire
- Institut de Génétique Moléculaire de Montpellier, University of Montpellier, CNRS, 34293 Montpellier, France; (J.B.); (M.P.); (G.D.); (Y.S.); (A.Z.E.A.); (J.-C.A.); (E.B.); (E.A.)
- Correspondence: (D.G.); (U.H.)
| | - Marion Peter
- Institut de Génétique Moléculaire de Montpellier, University of Montpellier, CNRS, 34293 Montpellier, France; (J.B.); (M.P.); (G.D.); (Y.S.); (A.Z.E.A.); (J.-C.A.); (E.B.); (E.A.)
| | - Armando Andres Roca Suarez
- Inserm, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, 67000 Strasbourg, France; (A.A.R.S.); (A.V.); (M.G.); (J.L.)
- Université de Strasbourg, 67000 Strasbourg, France
| | - Guillaume Desandré
- Institut de Génétique Moléculaire de Montpellier, University of Montpellier, CNRS, 34293 Montpellier, France; (J.B.); (M.P.); (G.D.); (Y.S.); (A.Z.E.A.); (J.-C.A.); (E.B.); (E.A.)
| | - Yannick Simonin
- Institut de Génétique Moléculaire de Montpellier, University of Montpellier, CNRS, 34293 Montpellier, France; (J.B.); (M.P.); (G.D.); (Y.S.); (A.Z.E.A.); (J.-C.A.); (E.B.); (E.A.)
| | - Alessia Virzì
- Inserm, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, 67000 Strasbourg, France; (A.A.R.S.); (A.V.); (M.G.); (J.L.)
- Université de Strasbourg, 67000 Strasbourg, France
| | - Amal Zine El Aabidine
- Institut de Génétique Moléculaire de Montpellier, University of Montpellier, CNRS, 34293 Montpellier, France; (J.B.); (M.P.); (G.D.); (Y.S.); (A.Z.E.A.); (J.-C.A.); (E.B.); (E.A.)
| | - Marine Guivarch
- Inserm, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, 67000 Strasbourg, France; (A.A.R.S.); (A.V.); (M.G.); (J.L.)
- Université de Strasbourg, 67000 Strasbourg, France
| | - Jean-Christophe Andrau
- Institut de Génétique Moléculaire de Montpellier, University of Montpellier, CNRS, 34293 Montpellier, France; (J.B.); (M.P.); (G.D.); (Y.S.); (A.Z.E.A.); (J.-C.A.); (E.B.); (E.A.)
| | - Edouard Bertrand
- Institut de Génétique Moléculaire de Montpellier, University of Montpellier, CNRS, 34293 Montpellier, France; (J.B.); (M.P.); (G.D.); (Y.S.); (A.Z.E.A.); (J.-C.A.); (E.B.); (E.A.)
| | - Eric Assenat
- Institut de Génétique Moléculaire de Montpellier, University of Montpellier, CNRS, 34293 Montpellier, France; (J.B.); (M.P.); (G.D.); (Y.S.); (A.Z.E.A.); (J.-C.A.); (E.B.); (E.A.)
- Department of Hepatogastroenterology, Hepatology and Liver Transplantation Unit, Saint Eloi Hospital, University of Montpellier, 34000 Montpellier, France
| | - Joachim Lupberger
- Inserm, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, 67000 Strasbourg, France; (A.A.R.S.); (A.V.); (M.G.); (J.L.)
- Université de Strasbourg, 67000 Strasbourg, France
| | - Urszula Hibner
- Institut de Génétique Moléculaire de Montpellier, University of Montpellier, CNRS, 34293 Montpellier, France; (J.B.); (M.P.); (G.D.); (Y.S.); (A.Z.E.A.); (J.-C.A.); (E.B.); (E.A.)
- Correspondence: (D.G.); (U.H.)
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9
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Pan T, Wang Y, Jing R, Wang Y, Wei Z, Zhang B, Lei C, Qi Y, Wang F, Bao X, Yan M, Zhang Y, Zhang P, Yu M, Wan G, Chen Y, Yang W, Zhu J, Zhu Y, Zhu S, Cheng Z, Zhang X, Jiang L, Ren Y, Wan J. Post-Golgi trafficking of rice storage proteins requires the small GTPase Rab7 activation complex MON1-CCZ1. PLANT PHYSIOLOGY 2021; 187:2174-2191. [PMID: 33871646 PMCID: PMC8644195 DOI: 10.1093/plphys/kiab175] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 03/26/2021] [Indexed: 05/16/2023]
Abstract
Protein storage vacuoles (PSVs) are unique organelles that accumulate storage proteins in plant seeds. Although morphological evidence points to the existence of multiple PSV-trafficking pathways for storage protein targeting, the molecular mechanisms that regulate these processes remain mostly unknown. Here, we report the functional characterization of the rice (Oryza sativa) glutelin precursor accumulation7 (gpa7) mutant, which over-accumulates 57-kDa glutelin precursors in dry seeds. Cytological and immunocytochemistry studies revealed that the gpa7 mutant exhibits abnormal accumulation of storage prevacuolar compartment-like structures, accompanied by the partial mistargeting of glutelins to the extracellular space. The gpa7 mutant was altered in the CCZ1 locus, which encodes the rice homolog of Arabidopsis (Arabidopsis thaliana) CALCIUM CAFFEINE ZINC SENSITIVITY1a (CCZ1a) and CCZ1b. Biochemical evidence showed that rice CCZ1 interacts with MONENSIN SENSITIVITY1 (MON1) and that these proteins function together as the Rat brain 5 (Rab5) effector and the Rab7 guanine nucleotide exchange factor (GEF). Notably, loss of CCZ1 function promoted the endosomal localization of vacuolar protein sorting-associated protein 9 (VPS9), which is the GEF for Rab5 in plants. Together, our results indicate that the MON1-CCZ1 complex is involved in post-Golgi trafficking of rice storage protein through a Rab5- and Rab7-dependent pathway.
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Affiliation(s)
- Tian Pan
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
| | - Yihua Wang
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
| | - Ruonan Jing
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
| | - Yongfei Wang
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhongyan Wei
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Binglei Zhang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Cailin Lei
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yanzhou Qi
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Fan Wang
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiuhao Bao
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
| | - Mengyuan Yan
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yu Zhang
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
| | - Pengcheng Zhang
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
| | - Mingzhou Yu
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
| | - Gexing Wan
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yu Chen
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Wenkun Yang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jianping Zhu
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
| | - Yun Zhu
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Shanshan Zhu
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Zhijun Cheng
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xin Zhang
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Ling Jiang
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
| | - Yulong Ren
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jianmin Wan
- State Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing 210095, China
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China
- Author for communication: ,
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10
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He W, Wang L, Lin Q, Yu F. Rice seed storage proteins: Biosynthetic pathways and the effects of environmental factors. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2021; 63:1999-2019. [PMID: 34581486 DOI: 10.1111/jipb.13176] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/27/2021] [Indexed: 05/02/2023]
Abstract
Rice (Oryza sativa L.) is the most important food crop for at least half of the world's population. Due to improved living standards, the cultivation of high-quality rice for different purposes and markets has become a major goal. Rice quality is determined by the presence of many nutritional components, including seed storage proteins (SSPs), which are the second most abundant nutrient components of rice grains after starch. Rice SSP biosynthesis requires the participation of multiple organelles and is influenced by the external environment, making it challenging to understand the molecular details of SSP biosynthesis and improve rice protein quality. In this review, we highlight the current knowledge of rice SSP biosynthesis, including a detailed description of the key molecules involved in rice SSP biosynthetic processes and the major environmental factors affecting SSP biosynthesis. The effects of these factors on SSP accumulation and their contribution to rice quality are also discussed based on recent findings. This recent knowledge suggests not only new research directions for exploring rice SSP biosynthesis but also innovative strategies for breeding high-quality rice varieties.
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Affiliation(s)
- Wei He
- National Engineering Laboratory for Rice and By-product Deep Processing, Central South University of Forestry and Technology, Changsha, 410004, China
- College of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, and Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, 410082, China
| | - Long Wang
- College of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, and Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, 410082, China
| | - Qinlu Lin
- National Engineering Laboratory for Rice and By-product Deep Processing, Central South University of Forestry and Technology, Changsha, 410004, China
| | - Feng Yu
- College of Biology, State Key Laboratory of Chemo/Biosensing and Chemometrics, and Hunan Province Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, 410082, China
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11
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Matsusaka H, Fukuda M, Elakhdar A, Kumamaru T. Serine hydroxymethyltransferase participates in the synthesis of cysteine-rich storage proteins in rice seed. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 312:111049. [PMID: 34620446 DOI: 10.1016/j.plantsci.2021.111049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/12/2021] [Accepted: 08/30/2021] [Indexed: 06/13/2023]
Abstract
The low level of cysteine-rich proteins (lcrp) mutation indicates a decrease in cysteine-rich (CysR) prolamines, α-globulin, and glutelin. To identify the causing factor of lcrp mutation, to elucidate its function, and to elucidate the role of CysR proteins in the formation of protein bodies (PBs), lcrp mutant was analyzed. A linkage map of the LCRP gene was constructed and genomic DNA sequencing of a predicted gene within the mapped region demonstrated that LCRP encodes a serine hydroxymethyltransferase, which participates in glycine-serine interconversion of one-carbon metabolism in the sulfur assimilation pathway. The levels of l-Ser, Gly, and Met in the sulfur assimilation pathway in the lcrp seeds increased significantly compared to that in the wildtype (WT). As the lcrp mutation influences the growth of shoot and root, the effects of the addition to the medium of amino acids and other compounds on the sulfur assimilation pathway were studied. Electron-lucent PBs surrounded by ribosome-attached membranes were observed accumulating cysteine-poor prolamines in the lcrp seeds. Additionally, glutelin-containing PBs were smaller and distorted in the lcrp seeds compared to those in the WT. These analyses of PBs in the lcrp seeds suggest that cysteine-rich proteins play an important role in the formation of PBs in rice.
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Affiliation(s)
- Hiroaki Matsusaka
- Institute of Genetic Resources, Faculty of Agriculture, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Masako Fukuda
- Institute of Genetic Resources, Faculty of Agriculture, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan
| | - Ammar Elakhdar
- Institute of Genetic Resources, Faculty of Agriculture, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan; Field Crops Research Institute, Agricultural Research Center, Giza 12619, Egypt
| | - Toshihiro Kumamaru
- Institute of Genetic Resources, Faculty of Agriculture, Kyushu University, Motooka 744, Fukuoka 819-0395, Japan.
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12
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Zhang Z, Deng Y, Zhang W, Wu Y, Messing J. Towards coeliac-safe bread. PLANT BIOTECHNOLOGY JOURNAL 2020; 18:1056-1065. [PMID: 31585498 PMCID: PMC7061869 DOI: 10.1111/pbi.13273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/11/2019] [Accepted: 09/29/2019] [Indexed: 05/08/2023]
Abstract
Gluten-free foods cannot substitute for products made from wheat flour. When wheat products are digested, the remaining peptides can trigger an autoimmune disease in 1% of the North American and European population, called coeliac disease. Because wheat proteins are encoded by a large gene family, it has been impossible to use conventional breeding to select wheat varieties that are coeliac-safe. However, one can test the properties of protein variants by expressing single genes in coeliac-safe cereals like maize. One source of protein that can be considered as coeliac-safe and has bread-making properties is teff (Eragrostis tef), a grain consumed in Ethiopia. Here, we show that teff α-globulin3 (Etglo3) forms storage vacuoles in maize that are morphologically similar to those of wheat. Using transmission electron microscopy, immunogold labelling shows that Etglo3 is almost exclusively deposited in the storage vacuole as electron-dense aggregates. Of maize seed storage proteins, 27-kDa γ-zein is co-deposited with Etglo3. Etglo3 polymerizes via intermolecular disulphide bonds in maize, similar to wheat HMW glutenins under non-reducing conditions. Crossing maize Etglo3 transgenic lines with α-, β- and γ-zein RNA interference (RNAi) lines reveals that Etglo3 accumulation is only dramatically reduced in γ-zein RNAi background. This suggests that Etglo3 and 27-kDa γ-zein together cause storage vacuole formation and behave similar to the interactions of glutenins and gliadins in wheat. Therefore, expression of teff α-globulins in maize presents a major step in the development of a coeliac-safe grain with bread-making properties.
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Affiliation(s)
- Zhiyong Zhang
- Waksman Institute of MicrobiologyRutgers UniversityPiscatawayNJUSA
| | - Yiting Deng
- National Key Laboratory of Plant Molecular GeneticsCAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology & EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
- University of the Chinese Academy of SciencesBeijingChina
| | - Wei Zhang
- Waksman Institute of MicrobiologyRutgers UniversityPiscatawayNJUSA
| | - Yongrui Wu
- National Key Laboratory of Plant Molecular GeneticsCAS Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology & EcologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
| | - Joachim Messing
- Waksman Institute of MicrobiologyRutgers UniversityPiscatawayNJUSA
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13
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Zhu J, Ren Y, Wang Y, Liu F, Teng X, Zhang Y, Duan E, Wu M, Zhong M, Hao Y, Zhu X, Lei J, Wang Y, Yu Y, Pan T, Bao Y, Wang Y, Wan J. OsNHX5-mediated pH homeostasis is required for post-Golgi trafficking of seed storage proteins in rice endosperm cells. BMC PLANT BIOLOGY 2019; 19:295. [PMID: 31277576 PMCID: PMC6612104 DOI: 10.1186/s12870-019-1911-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 06/27/2019] [Indexed: 05/16/2023]
Abstract
BACKGROUND As the major storage protein in rice seeds, glutelins are synthesized at the endoplasmic reticulum (ER) as proglutelins and transported to protein storage vacuoles (PSVs) called PBIIs (Protein body IIs), where they are cleaved into mature forms by the vacuolar processing enzymes. However, the molecular mechanisms underlying glutelin trafficking are largely unknown. RESULTS In this study, we report a rice mutant, named glutelin precursor accumulation6 (gpa6), which abnormally accumulates massive proglutelins. Cytological analyses revealed that in gpa6 endosperm cells, proglutelins were mis-sorted, leading to the presence of dense vesicles (DVs) and the formation paramural bodies (PMBs) at the apoplast, consequently, smaller PBII were observed. Mutated gene in gpa6 was found to encode a Na+/H+ antiporter, OsNHX5. OsNHX5 is expressed in all tissues analyzed, and its expression level is much higher than its closest paralog OsNHX6. The OsNHX5 protein colocalizes to the Golgi, the trans-Golgi network (TGN) and the pre-vacuolar compartment (PVC) in tobacco leaf epidermal cells. In vivo pH measurements indicated that the lumens of Golgi, TGN and PVC became more acidic in gpa6. CONCLUSIONS Our results demonstrated an important role of OsNHX5 in regulating endomembrane luminal pH, which is essential for seed storage protein trafficking in rice.
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Affiliation(s)
- Jianping Zhu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Yulong Ren
- National Key Facility for Crop Resources and Genetic Improvement Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081 People’s Republic of China
| | - Yunlong Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Feng Liu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095 People’s Republic of China
| | - Xuan Teng
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Yuanyan Zhang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Erchao Duan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Mingming Wu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Mingsheng Zhong
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Yuanyuan Hao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Xiaopin Zhu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Jie Lei
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Yongfei Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Yanfang Yu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Tian Pan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Yiqun Bao
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095 People’s Republic of China
| | - Yihua Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
| | - Jianmin Wan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095 China
- National Key Facility for Crop Resources and Genetic Improvement Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081 People’s Republic of China
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14
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Chou HL, Tian L, Washida H, Fukuda M, Kumamaru T, Okita TW. The rice storage protein mRNAs as a model system for RNA localization in higher plants. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 284:203-211. [PMID: 31084873 DOI: 10.1016/j.plantsci.2019.04.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/09/2019] [Accepted: 04/15/2019] [Indexed: 06/09/2023]
Abstract
The transport and targeting of mRNAs to specific intracellular locations is a ubiquitous process in prokaryotic and eukaryotic organisms. Despite the prevalent nature of RNA localization in guiding development, differentiation, cellular movement and intracellular organization of biochemical activities, only a few examples exist in higher plants. Here, we summarize past studies on mRNA-based protein targeting to specific subdomains of the cortical endoplasmic reticulum (ER) using the rice storage protein mRNAs as a model. Such studies have demonstrated that there are multiple pathways of RNA localization to the cortical ER that are controlled by cis-determinants (zipcodes) on the mRNA. These zipcode sequences are recognized by specific RNA binding proteins organized into multi-protein complexes. The available evidence suggests mRNAs are transported to their destination sites by co-opting membrane trafficking factors. Lastly, we discuss the major gaps in our knowledge on RNA localization and how information on the targeting of storage protein mRNAs can be used to further our understanding on how plant mRNAs are organized into regulons to facilitate protein localization and formation of multi-protein complexes.
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Affiliation(s)
- Hong-Li Chou
- Institute of Biological Chemistry, Washington State University, Pullman, WA, 99164-6340, United States
| | - Li Tian
- Institute of Biological Chemistry, Washington State University, Pullman, WA, 99164-6340, United States
| | - Haruhiko Washida
- Institute of Biological Chemistry, Washington State University, Pullman, WA, 99164-6340, United States
| | - Masako Fukuda
- Institute of Biological Chemistry, Washington State University, Pullman, WA, 99164-6340, United States; Faculty of Agriculture, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan
| | - Toshihiro Kumamaru
- Faculty of Agriculture, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan
| | - Thomas W Okita
- Institute of Biological Chemistry, Washington State University, Pullman, WA, 99164-6340, United States.
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15
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Tian L, Xing Y, Fukuda M, Li R, Kumamaru T, Qian D, Dong X, Qu LQ. A conserved motif is essential for the correct assembly of proglutelins and for their export from the endoplasmic reticulum in rice endosperm. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:5029-5043. [PMID: 30107432 PMCID: PMC6184509 DOI: 10.1093/jxb/ery290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 07/27/2018] [Indexed: 05/13/2023]
Abstract
Rice glutelins are initially synthesized as 57-kDa precursors at the endoplasmic reticulum (ER) and are ultimately transported into protein storage vacuoles. However, the sequence motifs that affect proglutelin folding, assembly, and their export from the ER remain poorly defined. In this study, we characterized a mutant with nine amino acids deleted in the GluA2 protein, which resulted in specific accumulation of the GluA precursor. The deleted amino acids constitute a well-conserved sequence (LVYIIQGRG) in glutelins and all residues in this motif are necessary for ER export of GluA2. Immunoelectron microscopy and stable transgenic analyses indicated that proglutelins with deletion of this motif misassembled and aggregated through non-native intermolecular disulfide bonds, and were deposited in ER-derived protein bodies (PB-Is), resulting in conversion of PB-Is into a new type of PB. These results indicate that the conserved motif is essential for proper assembly of proglutelin. The correct assembly of proglutelins is critical for their segregation from prolamins in the ER lumen, which is essential for enabling the export of proglutelin from the ER and for the proper formation of PB-Is. We also found that the interchain disulfide bond between acidic and basic subunits is not necessary for their assembly, but it is required for proglutelin folding.
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Affiliation(s)
- Lihong Tian
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, China
| | - Yanping Xing
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, China
| | - Masako Fukuda
- Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Rong Li
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, China
| | | | - Dandan Qian
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, China
| | - Xiangbai Dong
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, China
| | - Le Qing Qu
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, the Chinese Academy of Sciences, Beijing, China
- Correspondence:
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16
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Yang Y, Chou HL, Crofts AJ, Zhang L, Tian L, Washida H, Fukuda M, Kumamaru T, Oviedo OJ, Starkenburg SR, Okita TW. Selective sets of mRNAs localize to extracellular paramural bodies in a rice glup6 mutant. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:5045-5058. [PMID: 30102323 PMCID: PMC6189835 DOI: 10.1093/jxb/ery297] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 08/07/2018] [Indexed: 05/18/2023]
Abstract
The transport of rice glutelin storage proteins to the storage vacuoles requires the Rab5 GTPase and its related guanine nucleotide exchange factor (Rab5-GEF). Loss of function of these membrane vesicular trafficking factors results in the initial secretion of storage proteins and later their partial engulfment by the plasma membrane to form an extracellular paramural body (PMB), an aborted endosome complex. Here, we show that in the rice Rab5-GEF mutant glup6, glutelin RNAs are specifically mislocalized from their normal location on the cisternal endoplasmic reticulum (ER) to the protein body-ER, and are also apparently translocated to the PMBs. We substantiated the association of mRNAs with this aborted endosome complex by RNA-seq of PMBs purified by flow cytometry. Two PMB-associated groups of RNA were readily resolved: those that were specifically enriched in this aborted complex and those that were highly expressed in the cytoplasm. Examination of the PMB-enriched RNAs indicated that they were not a random sampling of the glup6 transcriptome but, instead, encompassed only a few functional mRNA classes. Although specific autophagy is also an alternative mechanism, our results support the view that RNA localization may co-opt membrane vesicular trafficking, and that many RNAs that share function or intracellular location are co-transported in developing rice seeds.
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Affiliation(s)
- Yongil Yang
- Institute of Biological Chemistry, Washington State University, Pullman, WA, USA
- Present address: Institute of Agriculture, The University of Tennessee, Knoxville, TN 37996, USA
| | - Hong-Li Chou
- Institute of Biological Chemistry, Washington State University, Pullman, WA, USA
- Present address: The Huck Institutes of the Life Sciences, Pennsylvania State University, PA 16802, USA
| | - Andrew J Crofts
- International Liberal Arts Program, Akita International University, Akita, Japan
| | - Laining Zhang
- Institute of Biological Chemistry, Washington State University, Pullman, WA, USA
| | - Li Tian
- Institute of Biological Chemistry, Washington State University, Pullman, WA, USA
| | - Haruhiko Washida
- Institute of Biological Chemistry, Washington State University, Pullman, WA, USA
- Present Address: Organic Nico Co., Ltd, North #205, Kyodai Katsura Venture Plaza, 1–36, Goryo-Ohara, Nishikyo-ku, Kyoto 615–8245, Japan
| | - Masako Fukuda
- Faculty of Agriculture, Kyushu University, Motooka Nishi-ku, Fukuoka, Japan
| | - Toshihiro Kumamaru
- Faculty of Agriculture, Kyushu University, Motooka Nishi-ku, Fukuoka, Japan
| | | | | | - Thomas W Okita
- Institute of Biological Chemistry, Washington State University, Pullman, WA, USA
- Correspondence:
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17
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Takaiwa F, Wakasa Y, Hayashi S, Kawakatsu T. An overview on the strategies to exploit rice endosperm as production platform for biopharmaceuticals. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 263:201-209. [PMID: 28818376 DOI: 10.1016/j.plantsci.2017.07.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 07/10/2017] [Accepted: 07/11/2017] [Indexed: 05/22/2023]
Abstract
Cereal seed has been utilized as production platform for high-value biopharmaceutical proteins. Especially, protein bodies (PBs) in seeds are not only natural specialized storage organs of seed storage proteins (SSPs), but also suitable intracellular deposition compartment for recombinant proteins. When various recombinant proteins were produced as secretory proteins by attaching N terminal ER signal peptide and C terminal KDEL endoplasmic reticulum (ER) retention signal or as fusion proteins with SSPs, high amounts of recombinant proteins can be predominantly accumulated in the PBs. Recombinant proteins bioencapsulated in PBs exhibit high resistance to digestive enzymes in gastrointestinal tract than other intracellular compartments and are highly stable at ambient temperature, thus allowing oral administration of PBs containing recombinant proteins as oral drugs or functional nutrients in cost-effective minimum processed formulation. In this review, we would like to address key factors determining accumulation levels of recombinant proteins in PBs. Understanding of bottle neck parts and improvement of specific deposition to PBs result in much higher levels of production of high quality recombinant proteins.
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Affiliation(s)
- Fumio Takaiwa
- Plant Molecular Farming Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Kannondai 2-1-2, Tsukuba, Ibaraki 305-8602, Japan.
| | - Yuhya Wakasa
- Plant Molecular Farming Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Kannondai 2-1-2, Tsukuba, Ibaraki 305-8602, Japan
| | - Shimpei Hayashi
- Plant Molecular Farming Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Kannondai 2-1-2, Tsukuba, Ibaraki 305-8602, Japan
| | - Taiji Kawakatsu
- Plant Molecular Farming Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Kannondai 2-1-2, Tsukuba, Ibaraki 305-8602, Japan
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18
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Brandizzi F. Transport from the endoplasmic reticulum to the Golgi in plants: Where are we now? Semin Cell Dev Biol 2017; 80:94-105. [PMID: 28688928 DOI: 10.1016/j.semcdb.2017.06.024] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 05/11/2017] [Accepted: 06/27/2017] [Indexed: 11/26/2022]
Abstract
The biogenesis of about one third of the cellular proteome is initiated in the endoplasmic reticulum (ER), which exports proteins to the Golgi apparatus for sorting to their final destination. Notwithstanding the close proximity of the ER with other secretory membranes (e.g., endosomes, plasma membrane), the ER is also important for the homeostasis of non-secretory organelles such as mitochondria, peroxisomes, and chloroplasts. While how the plant ER interacts with most of the non-secretory membranes is largely unknown, the knowledge on the mechanisms for ER-to-Golgi transport is relatively more advanced. Indeed, over the last fifteen years or so, a large number of exciting results have contributed to draw parallels with non-plant species but also to highlight the complexity of the plant ER-Golgi interface, which bears unique features. This review reports and discusses results on plant ER-to-Golgi traffic, focusing mainly on research on COPII-mediated transport in the model species Arabidopsis thaliana.
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Affiliation(s)
- Federica Brandizzi
- MSU-DOE Plant Research Lab and Plant Biology Department, Michigan State University, East Lansing, MI 48824, USA; Department of Plant Biology, Michigan State University, East Lansing, MI 48824, USA; Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI 48824, USA.
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