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Carrillo R, Iwai K, Albertson A, Dang G, Christopher DA. Protein disulfide isomerase-9 interacts with the lumenal region of the transmembrane endoplasmic reticulum stress sensor kinase, IRE1, to modulate the unfolded protein response in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2024; 15:1389658. [PMID: 38817940 PMCID: PMC11137178 DOI: 10.3389/fpls.2024.1389658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 04/19/2024] [Indexed: 06/01/2024]
Abstract
Environmental stressors disrupt secretory protein folding and proteostasis in the endoplasmic reticulum (ER), leading to ER stress. The unfolded protein response (UPR) senses ER stress and restores proteostasis by increasing the expression of ER-resident protein folding chaperones, such as protein disulfide isomerases (PDIs). In plants, the transmembrane ER stress sensor kinase, IRE1, activates the UPR by unconventionally splicing the mRNA encoding the bZIP60 transcription factor, triggering UPR gene transcription. The induced PDIs catalyze disulfide-based polypeptide folding to restore the folding capacity in the ER; however, the substrates with which PDIs interact are largely unknown. Here, we demonstrate that the Arabidopsis PDI-M subfamily member, PDI9, modulates the UPR through interaction with IRE1. This PDI9-IRE1 interaction was largely dependent on Cys63 in the first dithiol redox active domain of PDI9, and Cys233 and Cys107 in the ER lumenal domain of IRE1A and IRE1B, respectively. In vitro and in vivo, PDI9 coimmunoprecipitated with IRE1A and IRE1B. Moreover, the PDI9:RFP and Green Fluorescence Protein (GFP):IRE1 fusions exhibited strong interactions as measured by fluorescence lifetime imaging microscopy-fluorescence resonance energy transfer (FLIM-FRET) when coexpressed in mesophyll protoplasts. The UPR-responsive PDI9 promoter:mCherry reporter and the UPR-dependent splicing of the bZIP60 intron from the mRNA of the 35S::bZIP60-intron:GFP reporter were both significantly induced in the pdi9 mutants, indicating a derepression and hyperactivation of UPR. The inductions of both reporters were substantially attenuated in the ire1a-ire1b mutant. We propose a model in which PDI9 modulates the UPR through two competing activities: secretory protein folding and via interaction with IRE1 to maintain proteostasis in plants.
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Affiliation(s)
| | | | | | | | - David A. Christopher
- Department of Molecular Biosciences and Bioengineering, University of Hawaii, Honolulu, HI, United States
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Saroha M, Arya A, Singh G, Sharma P. Genome-wide expression analysis of novel heat-responsive microRNAs and their targets in contrasting wheat genotypes at reproductive stage under terminal heat stress. FRONTIERS IN PLANT SCIENCE 2024; 15:1328114. [PMID: 38660446 PMCID: PMC11039868 DOI: 10.3389/fpls.2024.1328114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 03/21/2024] [Indexed: 04/26/2024]
Abstract
Introduction Heat stress at terminal stage of wheat is critical and leads to huge yield losses worldwide. microRNAs (miRNAs) play significant regulatory roles in gene expression associated with abiotic and biotic stress at the post-transcriptional level. Methods In the present study, we carried out a comparative analysis of miRNAs and their targets in flag leaves as well as developing seeds of heat tolerant (RAJ3765) and heat susceptible (HUW510) wheat genotypes under heat stress and normal conditions using small RNA and degradome sequencing. Results and discussion A total of 84 conserved miRNAs belonging to 35 miRNA families and 93 novel miRNAs were identified in the 8 libraries. Tae-miR9672a-3p, tae-miR9774, tae-miR9669-5p, and tae-miR5048-5p showed the highest expression under heat stress. Tae-miR9775, tae-miR9662b-3p, tae-miR1120a, tae-miR5084, tae-miR1122a, tae-miR5085, tae-miR1118, tae-miR1130a, tae-miR9678-3p, tae-miR7757-5p, tae-miR9668-5p, tae-miR5050, tae-miR9652-5p, and tae-miR9679-5p were expressed only in the tolerant genotype, indicating their role in heat tolerance. Comparison between heat-treated and control groups revealed that 146 known and 57 novel miRNAs were differentially expressed in the various tissues. Eight degradome libraries sequence identified 457 targets of the differentially expressed miRNAs. Functional analysis of the targets indicated their involvement in photosynthesis, spliceosome, biosynthesis of nucleotide sugars and protein processing in the endoplasmic reticulum, arginine and proline metabolism and endocytosis. Conclusion This study increases the number of identified and novel miRNAs along with their roles involved in heat stress response in contrasting genotypes at two developing stages of wheat.
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Affiliation(s)
- Monika Saroha
- Department of Biotechnology, ICAR Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana, India
| | - Aditi Arya
- Department of Biotechnology, Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Haryana, India
| | - Gyanendra Singh
- Department of Biotechnology, ICAR Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
| | - Pradeep Sharma
- Department of Biotechnology, ICAR Indian Institute of Wheat and Barley Research, Karnal, Haryana, India
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Qi Z, Lu P, Long X, Cao X, Wu M, Xin K, Xue T, Gao X, Huang Y, Wang Q, Jiang C, Xu JR, Liu H. Adaptive advantages of restorative RNA editing in fungi for resolving survival-reproduction trade-offs. SCIENCE ADVANCES 2024; 10:eadk6130. [PMID: 38181075 PMCID: PMC10776026 DOI: 10.1126/sciadv.adk6130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 12/05/2023] [Indexed: 01/07/2024]
Abstract
RNA editing in various organisms commonly restores RNA sequences to their ancestral state, but its adaptive advantages are debated. In fungi, restorative editing corrects premature stop codons in pseudogenes specifically during sexual reproduction. We characterized 71 pseudogenes and their restorative editing in Fusarium graminearum, demonstrating that restorative editing of 16 pseudogenes is crucial for germ tissue development in fruiting bodies. Our results also revealed that the emergence of premature stop codons is facilitated by restorative editing and that premature stop codons corrected by restorative editing are selectively favored over ancestral amino acid codons. Furthermore, we found that ancestral versions of pseudogenes have antagonistic effects on reproduction and survival. Restorative editing eliminates the survival costs of reproduction caused by antagonistic pleiotropy and provides a selective advantage in fungi. Our findings highlight the importance of restorative editing in the evolution of fungal complex multicellularity and provide empirical evidence that restorative editing serves as an adaptive mechanism enabling the resolution of genetic trade-offs.
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Affiliation(s)
- Zhaomei Qi
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ping Lu
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xinyuan Long
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xinyu Cao
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Mengchun Wu
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Kaiyun Xin
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Tuan Xue
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xinlong Gao
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yi Huang
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qinhu Wang
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Cong Jiang
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jin-Rong Xu
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA
| | - Huiquan Liu
- State Key Laboratory for Crop Stress Resistance and High-Efficiency Production, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
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Zhang B, Deng C, Wang S, Deng Q, Chu Y, Bai Z, Huang A, Zhang Q, He Q. The RNA landscape of Dunaliella salina in response to short-term salt stress. FRONTIERS IN PLANT SCIENCE 2023; 14:1278954. [PMID: 38111875 PMCID: PMC10726701 DOI: 10.3389/fpls.2023.1278954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 11/10/2023] [Indexed: 12/20/2023]
Abstract
Using the halotolerant green microalgae Dunaliella salina as a model organism has special merits, such as a wide range of salt tolerance, unicellular organism, and simple life cycle and growth conditions. These unique characteristics make it suitable for salt stress study. In order to provide an overview of the response of Dunaliella salina to salt stress and hopefully to reveal evolutionarily conserved mechanisms of photosynthetic organisms in response to salt stress, the transcriptomes and the genome of the algae were sequenced by the second and the third-generation sequencing technologies, then the transcriptomes under salt stress were compared to the transcriptomes under non-salt stress with the newly sequenced genome as the reference genome. The major cellular biological processes that being regulated in response to salt stress, include transcription, protein synthesis, protein degradation, protein folding, protein modification, protein transport, cellular component organization, cell redox homeostasis, DNA repair, glycerol synthesis, energy metabolism, lipid metabolism, and ion homeostasis. This study gives a comprehensive overview of how Dunaliella salina responses to salt stress at transcriptomic level, especially characterized by the nearly ubiquitous up-regulation of the genes involving in protein folding, DNA repair, and cell redox homeostasis, which may confer the algae important mechanisms to survive under salt stress. The three fundamental biological processes, which face huge challenges under salt stress, are ignored by most scientists and are worth further deep study to provide useful information for breeding economic important plants competent in tolerating salt stress, other than only depending on the commonly acknowledged osmotic balance and ion homeostasis.
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Affiliation(s)
- Bingbing Zhang
- The Research Institute of Qinghai-Tibet Plateau, Southwest Minzu University, Chengdu, China
| | - Caiyun Deng
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, China
| | - Shuo Wang
- The Research Institute of Qinghai-Tibet Plateau, Southwest Minzu University, Chengdu, China
| | - Qianyi Deng
- The Research Institute of Qinghai-Tibet Plateau, Southwest Minzu University, Chengdu, China
| | - Yongfan Chu
- Key Laboratory of Qinghai-Tibet Plateau Animal Genetic Resource Reservation and Utilization, Southwest Minzu University, Chengdu, China
| | - Ziwei Bai
- Key Laboratory of Qinghai-Tibet Plateau Animal Genetic Resource Reservation and Utilization, Southwest Minzu University, Chengdu, China
| | - Axiu Huang
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, China
| | - Qinglian Zhang
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, China
| | - Qinghua He
- Key Laboratory of Qinghai-Tibet Plateau Animal Genetic Resource Reservation and Utilization, Southwest Minzu University, Chengdu, China
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Khoso MA, Zhang H, Khoso MH, Poudel TR, Wagan S, Papiashvili T, Saha S, Ali A, Murtaza G, Manghwar H, Liu F. Synergism of vesicle trafficking and cytoskeleton during regulation of plant growth and development: A mechanistic outlook. Heliyon 2023; 9:e21976. [PMID: 38034654 PMCID: PMC10682163 DOI: 10.1016/j.heliyon.2023.e21976] [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: 06/07/2023] [Revised: 11/01/2023] [Accepted: 11/01/2023] [Indexed: 12/02/2023] Open
Abstract
The cytoskeleton is a fundamental component found in all eukaryotic organisms, serving as a critical factor in various essential cyto-biological mechanisms, particularly in the locomotion and morphological transformations of plant cells. The cytoskeleton is comprised of three main components: microtubules (MT), microfilaments (MF), and intermediate filaments (IF). The cytoskeleton plays a crucial role in the process of cell wall formation and remodeling throughout the growth and development of cells. It is a highly organized and regulated network composed of filamentous components. In the basic processes of intracellular transport, such as mitosis, cytokinesis, and cell polarity, the plant cytoskeleton plays a crucial role according to recent studies. The major flaws in the organization of the cytoskeletal framework are at the root of the aberrant organogenesis currently observed in plant mutants. The regulation of protein compartmentalization and abundance within cells is predominantly governed by the process of vesicle/membrane transport, which plays a crucial role in several signaling cascades.The regulation of membrane transport in eukaryotic cells is governed by a diverse array of proteins. Recent developments in genomics have provided new tools to study the evolutionary relationships between membrane proteins in different plant species. It is known that members of the GTPases, COP, SNAREs, Rabs, tethering factors, and PIN families play essential roles in vesicle transport between plant, animal, and microbial species. This Review presents the latest research on the plant cytoskeleton, focusing on recent developments related to the cytoskeleton and summarizing the role of various proteins in vesicle transport. In addition, the report predicts future research direction of plant cytoskeleton and vesicle trafficking, potential research priorities, and provides researchers with specific pointers to further investigate the significant link between cytoskeleton and vesicle trafficking.
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Affiliation(s)
- Muneer Ahmed Khoso
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang 332000, China
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, Department of Life Science, Northeast Forestry University, Harbin 150040, China
| | - Hailong Zhang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, Department of Life Science, Northeast Forestry University, Harbin 150040, China
| | - Mir Hassan Khoso
- Department of Biochemistry, Shaheed Mohtarma Benazir Bhutto Medical University Larkana, Pakistan
| | - Tika Ram Poudel
- Feline Research Center of National Forestry and Grassland Administration, College of Wildlife and Protected Area, Northeast Forestry University, Harbin 150040, China
| | - Sindho Wagan
- Laboratory of Pest Physiology Biochemistry and Molecular Toxicology Department of Forest Protection Northeast Forestry University Harbin 150040, China
| | - Tamar Papiashvili
- School of Economics and Management Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Sudipta Saha
- School of Forestry, Department of Silviculture, Northeast Forestry University, Harbin 150040, China
| | - Abid Ali
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, Department of Life Science, Northeast Forestry University, Harbin 150040, China
| | - Ghulam Murtaza
- Department of Biochemistry and Molecular Biology Harbin Medical University China, China
| | - Hakim Manghwar
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang 332000, China
| | - Fen Liu
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang 332000, China
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Rodriguez Gallo MC, Li Q, Talasila M, Uhrig RG. Quantitative Time-Course Analysis of Osmotic and Salt Stress in Arabidopsis thaliana Using Short Gradient Multi-CV FAIMSpro BoxCar DIA. Mol Cell Proteomics 2023; 22:100638. [PMID: 37704098 PMCID: PMC10663867 DOI: 10.1016/j.mcpro.2023.100638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 08/22/2023] [Accepted: 08/27/2023] [Indexed: 09/15/2023] Open
Abstract
A major limitation when undertaking quantitative proteomic time-course experimentation is the tradeoff between depth-of-analysis and speed-of-analysis. In high complexity and high dynamic range sample types, such as plant extracts, balance between resolution and time is especially apparent. To address this, we evaluate multiple compensation voltage (CV) high field asymmetric waveform ion mobility spectrometry (FAIMSpro) settings using the latest label-free single-shot Orbitrap-based DIA acquisition workflows for their ability to deeply quantify the Arabidopsis thaliana seedling proteome. Using a BoxCarDIA acquisition workflow with a -30 -50 -70 CV FAIMSpro setting, we were able to consistently quantify >5000 Arabidopsis seedling proteins over a 21-min gradient, facilitating the analysis of ∼42 samples per day. Utilizing this acquisition approach, we then quantified proteome-level changes occurring in Arabidopsis seedling shoots and roots over 24 h of salt and osmotic stress, to identify early and late stress response proteins and reveal stress response overlaps. Here, we successfully quantify >6400 shoot and >8500 root protein groups, respectively, quantifying nearly ∼9700 unique protein groups in total across the study. Collectively, we pioneer a short gradient, multi-CV FAIMSpro BoxCarDIA acquisition workflow that represents an exciting new analysis approach for undertaking quantitative proteomic time-course experimentation in plants.
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Affiliation(s)
- M C Rodriguez Gallo
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Q Li
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - M Talasila
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - R G Uhrig
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada; Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada.
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7
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Zhang C, Yao X, Zhang Y, Zhao S, Liu J, Wu G, Yan X, Luo J. Transcriptomic Profiling Highlights the ABA Response Role of BnSIP1-1 in Brassica napus. Int J Mol Sci 2023; 24:10641. [PMID: 37445818 DOI: 10.3390/ijms241310641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/09/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
BnSIP1-1 is the first identified SIP1 (6b Interacting Protein1) subfamily gene of the trihelix transcription factor family from Brassica napus (B. napus). We previously used a reverse genetic method to reveal its abiotic stress response function in endowing plants resistance to drought and salinity, as well as ABA (Abscisic acid). However, the molecular mechanisms of BnSIP1-1 are unclear. In this study, the global transcriptome files of BnSIP1-1-overexpressing transgenic and wildtype B. napus seedlings under ABA treatment were constructed using RNA-seq. A total of 1823 and 5512 DEGs (Differentially Expressed Genes) were identified in OE vs. WT and OE_ABA vs. WT_ABA comparison groups, which included 751 and 2567 up-regulated DEGs, and 1072 and 2945 down-regulated DEGs, separately. The impact of overexpressed BnSIP1-1 on plants was amplified by ABA, indicating BnSIP1-1 was an ABA-conditioned responsive gene. More interestingly, we found the reasons for BnSIP1-1 increasing plants' insensitivity to ABA were not by regulating ABA synthesis and catabolism, but by manipulating ABA transportation, ABA signal perception and transduction, inositol phosphate metabolism, as well as endomembrane trafficking, indirectly suggesting this gene may play roles upstream of the core ABA response pathway. Our results provided new insights into improving the knowledge about the function of BnSIP1-1 and the ABA signaling mechanism in B. napus.
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Affiliation(s)
- Chi Zhang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
- Key Laboratory of Traceability for Agricultural Genetically Modified Organisms, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Xiaoqing Yao
- Key Laboratory of Biology and Genetic Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
- Key Laboratory of Traceability for Agricultural Genetically Modified Organisms, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Yan Zhang
- Key Laboratory of Biology and Genetic Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
- Key Laboratory of Traceability for Agricultural Genetically Modified Organisms, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Shengbo Zhao
- Key Laboratory of Biology and Genetic Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
- Key Laboratory of Traceability for Agricultural Genetically Modified Organisms, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Jinghui Liu
- Key Laboratory of Biology and Genetic Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
- Key Laboratory of Traceability for Agricultural Genetically Modified Organisms, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Gang Wu
- Key Laboratory of Biology and Genetic Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
- Key Laboratory of Traceability for Agricultural Genetically Modified Organisms, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Xiaohong Yan
- Key Laboratory of Biology and Genetic Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
- Key Laboratory of Traceability for Agricultural Genetically Modified Organisms, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
| | - Junling Luo
- Key Laboratory of Biology and Genetic Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
- Key Laboratory of Traceability for Agricultural Genetically Modified Organisms, Ministry of Agriculture and Rural Affairs, Wuhan 430062, China
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Ogrodowicz P, Wojciechowicz MK, Kuczyńska A, Krajewski P, Kempa M. The Effects of Growth Modification on Pollen Development in Spring Barley ( Hordeum vulgare L.) Genotypes with Contrasting Drought Tolerance. Cells 2023; 12:1656. [PMID: 37371126 DOI: 10.3390/cells12121656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/02/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
Drought stress inducing pollen sterility can reduce crop yield worldwide. The regulatory crosstalk associated with the effects of drought on pollen formation at the cellular level has not been explored in detail so far. In this study, we performed morphological and cytoembryological analysis of anther perturbations and examined pollen development in two spring barley genotypes that differ in earliness and drought tolerance. The Syrian breeding line CamB (drought-tolerant) and the European cultivar Lubuski (drought-sensitive) were used as experimental materials to analyze the drought-induced changes in yield performance, chlorophyll fluorescence kinetics, the pollen grain micromorphology and ultrastructure during critical stages of plant development. In addition, fluctuations in HvGAMYB expression were studied, as this transcription factor is closely associated with the development of the anther. In the experiments, the studied plants were affected by drought, as was confirmed by the analyses of yield performance and chlorophyll fluorescence kinetics. However, contrary to our expectations, the pollen development of plants grown under specific conditions was not severely affected. The results also suggest that growth modification, as well as the perturbation in light distribution, can affect the HvGAMYB expression. This study demonstrated that the duration of the vegetation period can influence plant drought responses and, as a consequence, the processes associated with pollen development as every growth modification changes the dynamics of drought effects as well as the duration of plant exposition to drought.
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Affiliation(s)
- Piotr Ogrodowicz
- Institute of Plant Genetics Polish Academy of Sciences, 34 Strzeszynska Street, 60-479 Poznan, Poland
| | - Maria Katarzyna Wojciechowicz
- Department of General Botany, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, 1 Wieniawskiego Street, 60-479 Poznan, Poland
| | - Anetta Kuczyńska
- Institute of Plant Genetics Polish Academy of Sciences, 34 Strzeszynska Street, 60-479 Poznan, Poland
| | - Paweł Krajewski
- Institute of Plant Genetics Polish Academy of Sciences, 34 Strzeszynska Street, 60-479 Poznan, Poland
| | - Michał Kempa
- Institute of Plant Genetics Polish Academy of Sciences, 34 Strzeszynska Street, 60-479 Poznan, Poland
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Wei J, Xu L, Shi Y, Cheng T, Tan W, Zhao Y, Li C, Yang X, Ouyang L, Wei M, Wang J, Lu G. Transcriptome profile analysis of Indian mustard (Brassica juncea L.) during seed germination reveals the drought stress-induced genes associated with energy, hormone, and phenylpropanoid pathways. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 200:107750. [PMID: 37210860 DOI: 10.1016/j.plaphy.2023.107750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 04/14/2023] [Accepted: 05/08/2023] [Indexed: 05/23/2023]
Abstract
Indian mustard (Brassica juncea L. Czern and Coss) is an important oil and vegetable crop frequently affected by seasonal drought stress during seed germination, which retards plant growth and causes yield loss considerably. However, the gene networks regulating responses to drought stress in leafy Indian mustard remain elusive. Here, we elucidated the underlying gene networks and pathways of drought response in leafy Indian mustard using next-generation transcriptomic techniques. Phenotypic analysis showed that the drought-tolerant leafy Indian mustard cv. 'WeiLiang' (WL) had a higher germination rate, antioxidant capacity, and better growth performance than the drought-sensitive cv. 'ShuiDong' (SD). Transcriptome analysis identified differentially expressed genes (DEGs) in both cultivars under drought stress during four germination time points (i.e., 0, 12, 24, and 36 h); most of which were classified as drought-responsive, seed germination, and dormancy-related genes. In the Kyoto Encyclopedia of Genes and Genome (KEGG) analyses, three main pathways (i.e., starch and sucrose metabolism, phenylpropanoid biosynthesis, and plant hormone signal transduction) were unveiled involved in response to drought stress during seed germination. Furthermore, Weighted Gene Co-expression Network Analysis (WGCNA) identified several hub genes (novel.12726, novel.1856, BjuB027900, BjuA003402, BjuA021578, BjuA005565, BjuB006596, novel.12977, and BjuA033308) associated with seed germination and drought stress in leafy Indian mustard. Taken together, these findings deepen our understanding of the gene networks for drought responses during seed germination in leafy Indian mustard and provide potential target genes for the genetic improvement of drought tolerance in this crop.
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Affiliation(s)
- Jinxing Wei
- College of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China; Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Linghui Xu
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China; Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, 510642, China
| | - Yu Shi
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Tianfang Cheng
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Wenlan Tan
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China
| | - Yongguo Zhao
- College of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Chunsheng Li
- Hubei Engineering University, Xiaogan, 432000, China
| | - Xinyu Yang
- College of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Lejun Ouyang
- College of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Mingken Wei
- College of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China
| | - Junxia Wang
- Integrative Microbiology Research Centre, College of Plant Protection, South China Agricultural University, Guangzhou, 510642, China; Guangdong Province Key Laboratory of Microbial Signals and Disease Control, South China Agricultural University, Guangzhou, 510642, China.
| | - Guangyuan Lu
- College of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming, 525000, China.
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Lu C, Peng Z, Liu Y, Li G, Wan S. Genome-Wide Analysis of the SNARE Family in Cultivated Peanut ( Arachis hypogaea L.) Reveals That Some Members Are Involved in Stress Responses. Int J Mol Sci 2023; 24:ijms24087103. [PMID: 37108265 PMCID: PMC10139436 DOI: 10.3390/ijms24087103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/31/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
The superfamily of soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) proteins mediates membrane fusion during vesicular transport between endosomes and the plasma membrane in eukaryotic cells, playing a vital role in plant development and responses to biotic and abiotic stresses. Peanut (Arachis hypogaea L.) is a major oilseed crop worldwide that produces pods below ground, which is rare in flowering plants. To date, however, there has been no systematic study of SNARE family proteins in peanut. In this study, we identified 129 putative SNARE genes from cultivated peanut (A. hypogaea) and 127 from wild peanut (63 from Arachis duranensis, 64 from Arachis ipaensis). We sorted the encoded proteins into five subgroups (Qa-, Qb-, Qc-, Qb+c- and R-SNARE) based on their phylogenetic relationships with Arabidopsis SNAREs. The genes were unevenly distributed on all 20 chromosomes, exhibiting a high rate of homolog retention from their two ancestors. We identified cis-acting elements associated with development, biotic and abiotic stresses in the promoters of peanut SNARE genes. Transcriptomic data showed that expression of SNARE genes is tissue-specific and stress inducible. We hypothesize that AhVTI13b plays an important role in the storage of lipid proteins, while AhSYP122a, AhSNAP33a and AhVAMP721a might play an important role in development and stress responses. Furthermore, we showed that three AhSNARE genes (AhSYP122a, AhSNAP33a and AhVAMP721) enhance cold and NaCl tolerance in yeast (Saccharomyces cerevisiae), especially AhSNAP33a. This systematic study provides valuable information about the functional characteristics of AhSNARE genes in the development and regulation of abiotic stress responses in peanut.
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Affiliation(s)
- Chaoxia Lu
- Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Zhenying Peng
- Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Yiyang Liu
- Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Guowei Li
- Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Shubo Wan
- Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan 250100, China
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Zhang J, Zhang M, Zhang J, Wang F, Wang Y, Zheng L. Overexpression of RtSYP121 confers cadmium colerance by promoting vesicle trafficking, maintaining ion homeostasis, and alleviating photosynthetic inhibition in Arabidopsis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 252:114620. [PMID: 36773437 DOI: 10.1016/j.ecoenv.2023.114620] [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: 05/22/2022] [Revised: 10/22/2022] [Accepted: 02/05/2023] [Indexed: 06/18/2023]
Abstract
Cadmium (Cd) is a toxic heavy metal in soil that seriously threatens crop production, food security, and human health. Syntaxins, a prototype family of Soluble N-ethyl-maleimide-associated protein receptors (SNAREs) involved in vesicle trafficking, are implicated in resistance to abiotic stresses, including Cd stress, but the molecular mechanisms underlying the involvement of syntaxins in Cd tolerance in plants are unclear. In this study, we isolated and functionally characterized the syntaxin gene RtSYP121 from Reaumuria trigyna to evaluate its potential for phytoremediation. RtSYP121 resides in the plasma membrane. The transcriptional level of RtSYP121 was strongly increased by salt, drought, and Cd stress. Overexpression of RtSYP121 significantly enhanced the Cd tolerance of transgenic Arabidopsis. The Cd tolerance of transgenic plants mainly depended on elevated vesicle trafficking, which increased the content of K+ and Ca2+ and thus decreased the accumulation of Cd2+ by regulating the delivery or activity of ion transporters, channels, and pumps. Moreover, overexpression of RtSYP121 in Arabidopsis ameliorated Cd stress-induced phytotoxic effects, including growth inhibition, ROS burst, photosynthetic impairment, and cell death. Therefore, we suggest that RtSYP121 plays multiple roles in the plant response to Cd stress by promoting vesicle trafficking, maintaining ion homeostasis, and alleviating photosynthetic inhibition.
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Affiliation(s)
- Jiayuan Zhang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China; State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot, China.
| | - Miao Zhang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China; State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot, China.
| | - Jian Zhang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China; State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot, China.
| | - Fang Wang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China; State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot, China.
| | - Yingchun Wang
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China; State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot, China.
| | - Linlin Zheng
- Key Laboratory of Forage and Endemic Crop Biotechnology, Minister of Education, School of Life Sciences, Inner Mongolia University, Hohhot, China; State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Hohhot, China.
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12
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Fang P, Sun T, Pandey AK, Jiang L, Wu X, Hu Y, Cheng S, Li M, Xu P. Understanding water conservation vs. profligation traits in vegetable legumes through a physio-transcriptomic-functional approach. HORTICULTURE RESEARCH 2023; 10:uhac287. [PMID: 36938572 PMCID: PMC10015340 DOI: 10.1093/hr/uhac287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 12/14/2022] [Indexed: 06/18/2023]
Abstract
Vegetable soybean and cowpea are related warm-season legumes showing contrasting leaf water use behaviors under similar root drought stresses, whose mechanisms are not well understood. Here we conducted an integrative phenomic-transcriptomic study on the two crops grown in a feedback irrigation system that enabled precise control of soil water contents. Continuous transpiration rate monitoring demonstrated that cowpea used water more conservatively under earlier soil drought stages, but tended to maintain higher transpiration under prolonged drought. Interestingly, we observed a soybean-specific transpiration rate increase accompanied by phase shift under moderate soil drought. Time-series transcriptomic analysis suggested a dehydration avoidance mechanism of cowpea at early soil drought stage, in which the VuHAI3 and VuTIP2;3 genes were suggested to be involved. Multifactorial gene clustering analysis revealed different responsiveness of genes to drought, time of day and their interactions between the two crops, which involved species-dependent regulation of the circadian clock genes. Gene network analysis identified two co-expression modules each associated with transpiration rate in cowpea and soybean, including a pair of negatively correlated modules between species. Module hub genes, including the ABA-degrading gene GmCYP707A4 and the trehalose-phosphatase/synthase gene VuTPS9 were identified. Inter-modular network analysis revealed putative co-players of the hub genes. Transgenic analyses verified the role of VuTPS9 in regulating transpiration rate under osmotic stresses. These findings propose that species-specific transcriptomic reprograming in leaves of the two crops suffering similar soil drought was not only a result of the different drought resistance level, but a cause of it.
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Affiliation(s)
- Pingping Fang
- College of Life Sciences, China Jiliang University, Xueyuan Street No.258, Hangzhou 310018, China
| | - Ting Sun
- College of Life Sciences, China Jiliang University, Xueyuan Street No.258, Hangzhou 310018, China
| | - Arun Kumar Pandey
- College of Life Sciences, China Jiliang University, Xueyuan Street No.258, Hangzhou 310018, China
| | - Libo Jiang
- School of Life Sciences and Medicine, Shandong University of Technology, Xincun West Road No.255, Zibo 255000, China
| | - Xinyang Wu
- College of Life Sciences, China Jiliang University, Xueyuan Street No.258, Hangzhou 310018, China
| | - Yannan Hu
- College of Life Sciences, China Jiliang University, Xueyuan Street No.258, Hangzhou 310018, China
| | - Shiping Cheng
- Henan Provincial Key Lab of Germplasm Innovation and Utilization of Eco-economic Woody Plant, Pingdingshan University, Weilai Street No.1, Pingdingshan 467000, China
| | - Mingxuan Li
- College of Life Sciences, China Jiliang University, Xueyuan Street No.258, Hangzhou 310018, China
| | - Pei Xu
- Corresponding author. E-mail:
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13
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Arias LA, D'Ippolito S, Frik J, Amigo NL, Marchetti F, Casalongué CA, Pagnussat GC, Fiol DF. The DC1 Domain Protein BINUCLEATE POLLEN is Required for POLLEN Development in Arabidopsis thaliana. PLANT & CELL PHYSIOLOGY 2023; 63:1994-2007. [PMID: 36001044 DOI: 10.1093/pcp/pcac122] [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: 05/12/2022] [Revised: 08/19/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
The development of the male gametophyte is a tightly regulated process that requires the precise control of cell division and gene expression. A relevant aspect to understand the events underlying pollen development regulation constitutes the identification and characterization of the genes required for this process. In this work, we showed that the DC1 domain protein BINUCLEATE POLLEN (BNP) is essential for pollen development and germination. Pollen grains carrying a defective BNP alleles failed to complete mitosis II and exhibited impaired pollen germination. By yeast two-hybrid analysis and bimolecular fluorescence complementation assays, we identified a set of BNP-interacting proteins. Among confirmed interactors, we found the NAC family transcriptional regulators Vascular Plant One-Zinc Finger 1 (VOZ1) and VOZ2. VOZ1 localization changes during pollen development, moving to the vegetative nucleus at the tricellular stage. We observed that this relocalization requires BNP; in the absence of BNP in pollen from bnp/BNP plants, VOZ1 nuclear localization is impaired. As the voz1voz2 double mutants showed the same developmental defect observed in bnp pollen grains, we propose that BNP requirement to complete microgametogenesis could be linked to its interaction with VOZ1/2 proteins. BNP could have the role of a scaffold protein, recruiting VOZ1/2 to the endosomal system into assemblies that are required for their further translocation to the nucleus, where they act as transcriptional regulators.
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Affiliation(s)
- Leonardo A Arias
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Sebastián D'Ippolito
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Jésica Frik
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Natalia L Amigo
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Fernanda Marchetti
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Claudia A Casalongué
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Gabriela C Pagnussat
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
| | - Diego F Fiol
- Instituto de investigaciones Biológicas IIB-CONICET - Universidad Nacional de Mar del Plata, Funes 3250, Mar del Plata, Buenos Aires 7600, Argentina
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14
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Zhang C, Wu F, Yan Q, Duan Z, Wang S, Ao B, Han Y, Zhang J. Genome-Wide Analysis of the Rab Gene Family in Melilotus albus Reveals Their Role in Salt Tolerance. Int J Mol Sci 2022; 24:ijms24010126. [PMID: 36613571 PMCID: PMC9820615 DOI: 10.3390/ijms24010126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/12/2022] [Accepted: 12/13/2022] [Indexed: 12/24/2022] Open
Abstract
Melilotus albus is a high-quality forage, due to its high protein content, and aboveground biomass and salt tolerance. Rab (Ras-related protein in the brain) proteins are the largest GTPase family which play a key role in intracellular membrane transport, and many Rab genes have been identified in eukaryotes. The growth and distribution of M. albus are severely hampered by soil salinization. However, little is known about candidate genes for salt tolerance in M. albus. In this study, 27 Rab family genes were identified for the first time from M. albus, and divided into eight groups (Groups A-H). The number of introns in MaRabs ranged from one to seven, with most genes containing one intron. In addition, most MaRab proteins showed similarities in motif composition. Phylogenetic analysis and structural-domain comparison indicated that Rab family genes were highly conserved in M. albus. Members of the MaRab gene family were distributed across all eight chromosomes, with the largest distribution on chromosome 1. Prediction of the protein interaction network showed that 24 Rab proteins exhibited protein-protein interactions. Analysis of the promoter cis-acting elements showed that MaRab-gene family members are extensively involved in abiotic stress responses. RNA-seq data analysis of the MaRab-gene-expression patterns suggested that the Rab gene family possesses differentially expressed members in five organs and under salt stress, drought stress, and ABA (Abscisic Acid) treatment. Differentially expressed genes under drought stress, salt stress and ABA stress were validated by quantitative real-time PCR. Furthermore, heterologous expression in yeast was used to characterize the functions of MaRab1 and MaRab17, which were upregulated in reaction to salt stress. In summary, this study provided valuable information for further research into the molecular mechanism of the response of M. albus to saline stress, as well as the possibility of developing cultivars with high salt-resistance characteristics.
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15
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Zheng C, Yu Y, Deng G, Li H, Li F. Network and Evolutionary Analysis Reveals Candidate Genes of Membrane Trafficking Involved in Maize Seed Development and Immune Response. FRONTIERS IN PLANT SCIENCE 2022; 13:883961. [PMID: 35812963 PMCID: PMC9263852 DOI: 10.3389/fpls.2022.883961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 03/29/2022] [Indexed: 06/15/2023]
Abstract
The plant membrane-trafficking system plays a crucial role in maintaining proper cellular functions and responding to various developmental and environmental cues. Thus far, our knowledge of the maize membrane-trafficking system is still limited. In this study, we systematically identified 479 membrane-trafficking genes from the maize genome using orthology search and studied their functions by integrating transcriptome and evolution analyses. These genes encode the components of coated vesicles, AP complexes, autophagy, ESCRTs, retromers, Rab GTPases, tethering factors, and SNAREs. The maize genes exhibited diverse but coordinated expression patterns, with 249 genes showing elevated expression in reproductive tissues. Further WGCNA analysis revealed that five COPII components and four Rab GTPases had high connectivity with protein biosynthesis during endosperm development and that eight components of autophagy, ESCRT, Rab, and SNARE were strongly co-upregulated with defense-related genes and/or with secondary metabolic processes to confer basal resistance to Fusarium graminearum. In addition, we identified 39 membrane-trafficking genes with strong selection signals during maize domestication and/or improvement. Among them, ZmSec23a and ZmVPS37A were selected for kernel oil production during improvement and pathogen resistance during domestication, respectively. In summary, these findings will provide important hints for future appreciation of the functions of membrane-trafficking genes in maize.
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Affiliation(s)
- Chunyan Zheng
- College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Yin Yu
- College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Guiling Deng
- College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Hanjie Li
- College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Faqiang Li
- 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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16
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cAMP Is a Promising Regulatory Molecule for Plant Adaptation to Heat Stress. Life (Basel) 2022; 12:life12060885. [PMID: 35743916 PMCID: PMC9225146 DOI: 10.3390/life12060885] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 11/16/2022] Open
Abstract
With gradual warming or increased frequency and magnitude of high temperature, heat stress adversely affects plant growth and eventually reduces plant productivity and quality. Plants have evolved complex mechanisms to sense and respond to heat stress which are crucial to avoiding cell damage and maintaining cellular homeostasis. Recently, 33″,55″-cyclic adenosine monophosphate (cAMP) has been proved to be an important signaling molecule participating in plant adaptation to heat stress by affecting multi-level regulatory networks. Significant progress has been made on many fronts of cAMP research, particularly in understanding the downstream signaling events that culminate in the activation of stress-responsive genes, mRNA translation initiation, vesicle trafficking, the ubiquitin-proteasome system, autophagy, HSPs-assisted protein processing, and cellular ion homeostasis to prevent heat-related damage and to preserve cellular and metabolic functions. In this present review, we summarize recent works on the genetic and molecular mechanisms of cAMP in plant response to heat stress which could be useful in finding thermotolerant key genes to develop heat stress-resistant varieties and that have the potential for utilizing cAMP as a chemical regulator to improve plant thermotolerance. New directions for future studies on cAMP are discussed.
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17
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Zhang W, Wang Y, Zhang T, Zhang J, Shen L, Zhang B, Ding C, Su X. Transcriptomic Analysis of Mature Transgenic Poplar Expressing the Transcription Factor JERF36 Gene in Two Different Environments. Front Bioeng Biotechnol 2022; 10:929681. [PMID: 35774064 PMCID: PMC9237257 DOI: 10.3389/fbioe.2022.929681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 05/19/2022] [Indexed: 11/13/2022] Open
Abstract
During the last several decades, a number of transgenic or genetically modified tree varieties with enhanced characteristics and new traits have been produced. These trees have become associated with generally unsubstantiated concerns over health and environmental safety. We conducted transcriptome sequencing of transgenic Populus alba × P. berolinensis expressing the transcription factor JERF36 gene (ABJ01) and the non-transgenic progenitor line (9#) to compare the transcriptional changes in the apical buds. We found that 0.77% and 1.31% of the total expressed genes were significant differentially expressed in ABJ01 at the Daqing and Qiqihar sites, respectively. Among them, 30%–50% of the DEGs contained cis-elements recognized by JERF36. Approximately 5% of the total number of expressed genes showed significant differential expression between Daqing and Qiqihar in both ABJ01 and 9#. 10 DEGs resulting from foreign gene introduction, 394 DEGs that resulted solely from the environmental differences, and 47 DEGs that resulted from the combination of foreign gene introduction and the environment were identified. The number of DEGs resulting from environmental factors was significantly greater than that resulting from foreign gene introduction, and the combined effect of the environmental effects with foreign gene introduction was significantly greater than resulting from the introduction of JERF36 alone. GO and KEGG annotation showed that the DEGs mainly participate in the photosynthesis, oxidative phosphorylation, plant hormone signaling, ribosome, endocytosis, and plant-pathogen interaction pathways, which play important roles in the responses to biotic and abiotic stresses ins plant. To enhance its adaptability to salt-alkali stress, the transgenic poplar line may regulate the expression of genes that participate in the photosynthesis, oxidative phosphorylation, MAPK, and plant hormone signaling pathways. The crosstalk between biotic and abiotic stress responses by plant hormones may improve the ability of both transgenic and non-transgenic poplars to defend against pathogens. The results of our study provide a basis for further studies on the molecular mechanisms behind improved stress resistance and the unexpected effects of transgenic gene expression in poplars, which will be significant for improving the biosafety evaluation of transgenic trees and accelerating the breeding of new varieties of forest trees resistant to environmental stresses.
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Affiliation(s)
- Weixi Zhang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Beijing, China
| | - Yanbo Wang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Beijing, China
- Nanchang Institute of Technology, Nanchang, China
| | - Tengqian Zhang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Beijing, China
| | - Jing Zhang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Beijing, China
| | - Le Shen
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Beijing, China
| | - Bingyu Zhang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Beijing, China
| | - Changjun Ding
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Beijing, China
- *Correspondence: Changjun Ding, ; Xiaohua Su,
| | - Xiaohua Su
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Beijing, China
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing, China
- *Correspondence: Changjun Ding, ; Xiaohua Su,
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18
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John WA, Lückel B, Matschiavelli N, Hübner R, Matschi S, Hoehenwarter W, Sachs S. Endocytosis is a significant contributor to uranium(VI) uptake in tobacco (Nicotiana tabacum) BY-2 cells in phosphate-deficient culture. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 823:153700. [PMID: 35168012 DOI: 10.1016/j.scitotenv.2022.153700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 01/20/2022] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
Endocytosis of metals in plants is a growing field of study involving metal uptake from the rhizosphere. Uranium, which is naturally and artificially released into the rhizosphere, is known to be taken up by certain species of plant, such as Nicotiana tabacum, and we hypothesize that endocytosis contributes to the uptake of uranium in tobacco. The endocytic uptake of uranium was investigated in tobacco BY-2 cells using an optimized setup of culture in phosphate-deficient medium. A combination of methods in biochemistry, microscopy and spectroscopy, supplemented by proteomics, were used to study the interaction of uranium and the plant cell. We found that under environmentally relevant uranium concentrations, endocytosis remained active and contributed to 14% of the total uranium bioassociation. Proteomics analyses revealed that uranium induced a change in expression of the clathrin heavy chain variant, signifying a shift in the type of endocytosis taking place. However, the rate of endocytosis remained largely unaltered. Electron microscopy and energy-dispersive X-ray spectroscopy showed an adsorption of uranium to cell surfaces and deposition in vacuoles. Our results demonstrate that endocytosis constitutes a considerable proportion of uranium uptake in BY-2 cells, and that endocytosed uranium is likely targeted to the vacuole for sequestration, providing a physiologically safer route for the plant than uranium transported through the cytosol.
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Affiliation(s)
- Warren A John
- Helmholtz - Zentrum Dresden-Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Benita Lückel
- Helmholtz - Zentrum Dresden-Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Nicole Matschiavelli
- Helmholtz - Zentrum Dresden-Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - René Hübner
- Helmholtz - Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Susanne Matschi
- Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany
| | | | - Susanne Sachs
- Helmholtz - Zentrum Dresden-Rossendorf, Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany.
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19
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Dong XM, Pu XJ, Zhou SZ, Li P, Luo T, Chen ZX, Chen SL, Liu L. Orphan gene PpARDT positively involved in drought tolerance potentially by enhancing ABA response in Physcomitrium (Physcomitrella) patens. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 319:111222. [PMID: 35487672 DOI: 10.1016/j.plantsci.2022.111222] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 02/11/2022] [Accepted: 02/14/2022] [Indexed: 05/19/2023]
Abstract
Almost all genomes have orphan genes, the majority of which are not functionally annotated. There is growing evidence showed that orphan genes may play important roles in the environmental stress response of Physcomitrium patens. We identified PpARDT (ABA-responsive drought tolerance) as a moss-specific and ABA-responsive orphan gene in P. patens. PpARDT is mainly expressed during the gametophytic stage of the life cycle, and the expression was induced by different abiotic stresses. A PpARDT knockout (Ppardt) mutant showed reduced dehydration-rehydration tolerance, and the phenotype could be rescued by exogenous ABA. Meanwhile, transgenic Arabidopsis lines exhibiting heterologous expression of PpARDT were more sensitive to exogenous ABA than wild-type (Col-0) plants and showed enhanced drought tolerance. These indicate that PpARDT confers drought tolerance among land plants potentially by enhancing ABA response. Further, we identified genes encoding abscisic acid receptor PYR/PYL family proteins, and ADP-ribosylation factors (Arf) as hub genes associated with the Ppardt phenotype. Given the lineage-specific characteristics of PpARDT, our results provide insights into the roles of orphan gene in shaping lineage-specific adaptation possibly by recruiting common pre-existed pathway components.
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Affiliation(s)
- Xiu-Mei Dong
- Key Laboratory Dependent on for Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China.
| | - Xiao-Jun Pu
- Key Laboratory Dependent on for Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China.
| | - Shi-Zhao Zhou
- Key Laboratory Dependent on for Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China.
| | - Ping Li
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China Ministry of Education, Southwest Forestry University, Kunming, 650201, China.
| | - Ting Luo
- Key Laboratory Dependent on for Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China.
| | - Ze-Xi Chen
- Key Laboratory Dependent on for Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China.
| | - Si-Lin Chen
- Key Laboratory Dependent on for Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Li Liu
- Key Laboratory Dependent on for Economic Plants and Biotechnology, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China; State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, Hubei University, Wuhan, Hubei, China.
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20
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Plant ESCRT protein ALIX coordinates with retromer complex in regulating receptor-mediated sorting of soluble vacuolar proteins. Proc Natl Acad Sci U S A 2022; 119:e2200492119. [PMID: 35533279 PMCID: PMC9171914 DOI: 10.1073/pnas.2200492119] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The endosomal sorting complex required for transport (ESCRT) machinery in multicellular organisms plays canonical functions in multivesicular body (MVB) biogenesis and membrane protein sorting. Nonetheless, its critical role in the sorting of soluble vacuolar proteins and its interplay with endosomal recycling machinery have yet to be reported. In this study, we demonstrate that Arabidopsis ESCRT-associated ALIXinteracts with the retromer core subunitsto regulate their recruitment onto endosome membrane for recycling of vacuolar sorting receptors (VSRs) for efficient sorting of soluble vacuolar proteins. This work provides molecular insights into the unique properties of ALIX in regulating vacuolar transport of soluble proteins, thus shedding new light on the crosstalk and coordination between the vacuolar trafficking and endosomal recycling pathways in plants. Vacuolar proteins play essential roles in plant physiology and development, but the factors and the machinery regulating their vesicle trafficking through the endomembrane compartments remain largely unknown. We and others have recently identified an evolutionarily conserved plant endosomal sorting complex required for transport (ESCRT)-associated protein apoptosis-linked gene-2 interacting protein X (ALIX), which plays canonical functions in the biogenesis of the multivesicular body/prevacuolar compartment (MVB/PVC) and in the sorting of ubiquitinated membrane proteins. In this study, we elucidate the roles and underlying mechanism of ALIX in regulating vacuolar transport of soluble proteins, beyond its conventional ESCRT function in eukaryotic cells. We show that ALIX colocalizes and physically interacts with the retromer core subunits Vps26 and Vps29 in planta. Moreover, double-mutant analysis reveals the genetic interaction of ALIX with Vps26 and Vps29 for regulating trafficking of soluble vacuolar proteins. Interestingly, depletion of ALIX perturbs membrane recruitment of Vps26 and Vps29 and alters the endosomal localization of vacuolar sorting receptors (VSRs). Taken together, ALIX functions as a unique retromer core subcomplex regulator by orchestrating receptor-mediated vacuolar sorting of soluble proteins.
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21
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Li B, Zeng Y, Jiang L. COPII vesicles in plant autophagy and endomembrane trafficking. FEBS Lett 2022; 596:2314-2323. [PMID: 35486434 DOI: 10.1002/1873-3468.14362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/18/2022] [Accepted: 04/19/2022] [Indexed: 11/06/2022]
Abstract
In eukaryotes, the endomembrane system allows for spatiotemporal compartmentation of complicated cellular processes. The plant endomembrane system consists of the endoplasmic reticulum (ER), the Golgi apparatus (GA), the trans-Golgi network (TGN), the multivesicular body (MVB), and the vacuole. Anterograde traffic from the ER to GA is mediated by coat protein complex II (COPII) vesicles. Autophagy, an evolutionarily conserved catabolic process that turns over cellular materials upon nutrient deprivation or in adverse environments, exploits double-membrane autophagosomes to recycle unwanted constituents in the lysosome/vacuole. Accumulating evidence reveals novel functions of plant COPII vesicles in autophagy and their regulation by abiotic stresses. Here, we summarize current knowledge about plant COPII vesicles in the endomembrane trafficking and then highlight recent findings showing their distinct roles in modulating the autophagic flux and stress responses.
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Affiliation(s)
- Baiying Li
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, New Territories, Hong Kong, China
| | - Yonglun Zeng
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, New Territories, Hong Kong, China
| | - Liwen Jiang
- School of Life Sciences, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, New Territories, Hong Kong, China.,CUHK Shenzhen Research Institute, Shenzhen, China.,Institute of Plant Molecular Biology and Agricultural Biotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong, China
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22
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Maricchiolo E, Panfili E, Pompa A, De Marchis F, Bellucci M, Pallotta MT. Unconventional Pathways of Protein Secretion: Mammals vs. Plants. Front Cell Dev Biol 2022; 10:895853. [PMID: 35573696 PMCID: PMC9096121 DOI: 10.3389/fcell.2022.895853] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 04/13/2022] [Indexed: 01/08/2023] Open
Abstract
In eukaryotes, many proteins contain an N-terminal signal peptide that allows their translocation into the endoplasmic reticulum followed by secretion outside the cell according to the classical secretory system. However, an increasing number of secreted proteins lacking the signal peptide sequence are emerging. These proteins, secreted in several alternative ways collectively known as unconventional protein secretion (UPS) pathways, exert extracellular functions including cell signaling, immune modulation, as well as moonlighting activities different from their well-described intracellular functions. Pathways for UPS include direct transfer across the plasma membrane, secretion from endosomal/multivesicular body-related components, release within plasma membrane-derived microvesicles, or use of elements of autophagy. In this review we describe the mammals and plants UPS pathways identified so far highlighting commonalities and differences.
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Affiliation(s)
- Elisa Maricchiolo
- Section of Biological and Biotechnological Sciences, Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Eleonora Panfili
- Section of Pharmacology, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
| | - Andrea Pompa
- Section of Biological and Biotechnological Sciences, Department of Biomolecular Sciences, University of Urbino Carlo Bo, Urbino, Italy
| | - Francesca De Marchis
- Institute of Biosciences and Bioresources, National Research Council of Italy, Perugia, Italy
| | - Michele Bellucci
- Institute of Biosciences and Bioresources, National Research Council of Italy, Perugia, Italy
- *Correspondence: Michele Bellucci, ; Maria Teresa Pallotta,
| | - Maria Teresa Pallotta
- Section of Pharmacology, Department of Medicine and Surgery, University of Perugia, Perugia, Italy
- *Correspondence: Michele Bellucci, ; Maria Teresa Pallotta,
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23
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Isoprene Emission Influences the Proteomic Profile of Arabidopsis Plants under Well-Watered and Drought-Stress Conditions. Int J Mol Sci 2022; 23:ijms23073836. [PMID: 35409196 PMCID: PMC8998555 DOI: 10.3390/ijms23073836] [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: 02/22/2022] [Revised: 03/25/2022] [Accepted: 03/29/2022] [Indexed: 02/06/2023] Open
Abstract
Isoprene is a small lipophilic molecule synthesized in plastids and abundantly released into the atmosphere. Isoprene-emitting plants are better protected against abiotic stresses, but the mechanism of action of isoprene is still under debate. In this study, we compared the physiological responses and proteomic profiles of Arabidopsis which express the isoprene synthase (ISPS) gene and emit isoprene with those of non-emitting plants under both drought-stress (DS) and well-watered (WW) conditions. We aimed to investigate whether isoprene-emitting plants displayed a different proteomic profile that is consistent with the metabolic changes already reported. Only ISPS DS plants were able to maintain the same photosynthesis and fresh weight of WW plants. LC-MS/MS-based proteomic analysis revealed changes in protein abundance that were dependent on the capacity for emitting isoprene in addition to those caused by the DS. The majority of the proteins changed in response to the interaction between DS and isoprene emission. These include proteins that are associated with the activation of secondary metabolisms leading to ABA, trehalose, and proline accumulations. Overall, our proteomic data suggest that isoprene exerts its protective mechanism at different levels: under drought stress, isoprene affects the abundance of chloroplast proteins, confirming a strong direct or indirect antioxidant action and also modulates signaling and hormone pathways, especially those controlling ABA synthesis. Unexpectedly, isoprene also alters membrane trafficking.
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24
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Hao G, Zhao X, Zhang M, Ying J, Yu F, Li S, Zhang Y. Vesicle trafficking in
Arabidopsis
pollen tubes. FEBS Lett 2022; 596:2231-2242. [DOI: 10.1002/1873-3468.14343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/08/2022] [Accepted: 03/08/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Guang‐Jiu Hao
- State Key Laboratory of Crop Biology College of Life Sciences Shandong Agricultural University Tai’an, Shandong China
| | - Xin‐Ying Zhao
- State Key Laboratory of Crop Biology College of Life Sciences Shandong Agricultural University Tai’an, Shandong China
| | | | - Jun Ying
- State Key Laboratory of Crop Biology College of Life Sciences Shandong Agricultural University Tai’an, Shandong China
| | - Fei Yu
- State Key Laboratory of Crop Biology College of Life Sciences Shandong Agricultural University Tai’an, Shandong China
| | - Sha Li
- State Key Laboratory of Crop Biology College of Life Sciences Shandong Agricultural University Tai’an, Shandong China
| | - Yan Zhang
- State Key Laboratory of Crop Biology College of Life Sciences Shandong Agricultural University Tai’an, Shandong China
- College of Life Sciences Nankai University China
- Frontiers Science Center for Cell Responses Nankai University China
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25
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Lamelas L, Valledor L, López-Hidalgo C, Cañal MJ, Meijón M. Nucleus and chloroplast: A necessary understanding to overcome heat stress in Pinus radiata. PLANT, CELL & ENVIRONMENT 2022; 45:446-458. [PMID: 34855991 DOI: 10.1111/pce.14238] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 06/13/2023]
Abstract
The recovery and maintenance of plant homeostasis under stressful environments are complex processes involving organelle crosstalk for a coordinated cellular response. Here, we revealed through nuclear and chloroplast subcellular proteomics, biochemical cell profiles and targeted transcriptomics how chloroplasts and nuclei developed their responses under increased temperatures in a long-lived species (Pinus radiata). Parallel to photosynthetic impairment and reactive oxygen species production in the chloroplast, a DNA damage response was triggered in the nucleus followed by an altered chromatin conformation. In addition, in the nuclei, we found several proteins, such as HEMERA or WHIRLY, which change their locations from the chloroplasts to the nuclei carrying the stress message. Additionally, our data showed a deep rearrangement of RNA metabolism in both organelles, revealing microRNAs and AGO1 as potential regulators of the acclimation mechanisms. Altogether, our study highlights the synchronisation among the different stages required for thermotolerance acquisition in P. radiata, pointing out the role of chromatin conformation and posttranscriptional gene regulation in overcoming heat stress and assuring plant survival for the following years.
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Affiliation(s)
- Laura Lamelas
- Plant Physiology, Department of Organisms and Systems Biology, University of Oviedo, Biotechnology Institute of Asturias, Oviedo, Asturias, Spain
| | - Luis Valledor
- Plant Physiology, Department of Organisms and Systems Biology, University of Oviedo, Biotechnology Institute of Asturias, Oviedo, Asturias, Spain
| | - Cristina López-Hidalgo
- Plant Physiology, Department of Organisms and Systems Biology, University of Oviedo, Biotechnology Institute of Asturias, Oviedo, Asturias, Spain
| | - María Jesús Cañal
- Plant Physiology, Department of Organisms and Systems Biology, University of Oviedo, Biotechnology Institute of Asturias, Oviedo, Asturias, Spain
| | - Mónica Meijón
- Plant Physiology, Department of Organisms and Systems Biology, University of Oviedo, Biotechnology Institute of Asturias, Oviedo, Asturias, Spain
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26
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Sampaio M, Neves J, Cardoso T, Pissarra J, Pereira S, Pereira C. Coping with Abiotic Stress in Plants-An Endomembrane Trafficking Perspective. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11030338. [PMID: 35161321 PMCID: PMC8838314 DOI: 10.3390/plants11030338] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/25/2022] [Accepted: 01/25/2022] [Indexed: 05/30/2023]
Abstract
Plant cells face many changes through their life cycle and develop several mechanisms to cope with adversity. Stress caused by environmental factors is turning out to be more and more relevant as the human population grows and plant cultures start to fail. As eukaryotes, plant cells must coordinate several processes occurring between compartments and combine different pathways for protein transport to several cellular locations. Conventionally, these pathways begin at the ER, or endoplasmic reticulum, move through the Golgi and deliver cargo to the vacuole or to the plasma membrane. However, when under stress, protein trafficking in plants is compromised, usually leading to changes in the endomembrane system that may include protein transport through unconventional routes and alteration of morphology, activity and content of key organelles, as the ER and the vacuole. Such events provide the tools for cells to adapt and overcome the challenges brought on by stress. With this review, we gathered fragmented information on the subject, highlighting how such changes are processed within the endomembrane system and how it responds to an ever-changing environment. Even though the available data on this subject are still sparse, novel information is starting to untangle the complexity and dynamics of protein transport routes and their role in maintaining cell homeostasis under harsh conditions.
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Affiliation(s)
- Miguel Sampaio
- GreenUPorto—Sustainable Agrifood Production Research Centre/Inov4Agro, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/nº, 4169-007 Porto, Portugal; (M.S.); (J.P.)
| | - João Neves
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/nº, 4169-007 Porto, Portugal; (J.N.); (T.C.)
| | - Tatiana Cardoso
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/nº, 4169-007 Porto, Portugal; (J.N.); (T.C.)
| | - José Pissarra
- GreenUPorto—Sustainable Agrifood Production Research Centre/Inov4Agro, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/nº, 4169-007 Porto, Portugal; (M.S.); (J.P.)
| | - Susana Pereira
- GreenUPorto—Sustainable Agrifood Production Research Centre/Inov4Agro, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/nº, 4169-007 Porto, Portugal; (M.S.); (J.P.)
| | - Cláudia Pereira
- GreenUPorto—Sustainable Agrifood Production Research Centre/Inov4Agro, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/nº, 4169-007 Porto, Portugal; (M.S.); (J.P.)
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27
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Aniento F, Sánchez de Medina Hernández V, Dagdas Y, Rojas-Pierce M, Russinova E. Molecular mechanisms of endomembrane trafficking in plants. THE PLANT CELL 2022; 34:146-173. [PMID: 34550393 PMCID: PMC8773984 DOI: 10.1093/plcell/koab235] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/12/2021] [Indexed: 05/10/2023]
Abstract
Endomembrane trafficking is essential for all eukaryotic cells. The best-characterized membrane trafficking organelles include the endoplasmic reticulum (ER), Golgi apparatus, early and recycling endosomes, multivesicular body, or late endosome, lysosome/vacuole, and plasma membrane. Although historically plants have given rise to cell biology, our understanding of membrane trafficking has mainly been shaped by the much more studied mammalian and yeast models. Whereas organelles and major protein families that regulate endomembrane trafficking are largely conserved across all eukaryotes, exciting variations are emerging from advances in plant cell biology research. In this review, we summarize the current state of knowledge on plant endomembrane trafficking, with a focus on four distinct trafficking pathways: ER-to-Golgi transport, endocytosis, trans-Golgi network-to-vacuole transport, and autophagy. We acknowledge the conservation and commonalities in the trafficking machinery across species, with emphasis on diversity and plant-specific features. Understanding the function of organelles and the trafficking machinery currently nonexistent in well-known model organisms will provide great opportunities to acquire new insights into the fundamental cellular process of membrane trafficking.
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Affiliation(s)
| | - Víctor Sánchez de Medina Hernández
- Gregor Mendel Institute, Austrian Academy of Sciences, Vienna BioCenter, 1030 Vienna, Austria
- Vienna BioCenter PhD Program, Doctoral School of the University of Vienna and Medical University of Vienna, A-1030, Vienna, Austria
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28
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Luo C, Shi Y, Xiang Y. SNAREs Regulate Vesicle Trafficking During Root Growth and Development. FRONTIERS IN PLANT SCIENCE 2022; 13:853251. [PMID: 35360325 PMCID: PMC8964185 DOI: 10.3389/fpls.2022.853251] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 01/27/2022] [Indexed: 05/13/2023]
Abstract
SNARE (soluble N-ethylmaleimide-sensitive factor attachment protein receptor) proteins assemble to drive the final membrane fusion step of membrane trafficking. Thus, SNAREs are essential for membrane fusion and vesicular trafficking, which are fundamental mechanisms for maintaining cellular homeostasis. In plants, SNAREs have been demonstrated to be located in different subcellular compartments and involved in a variety of fundamental processes, such as cytokinesis, cytoskeleton organization, symbiosis, and biotic and abiotic stress responses. In addition, SNAREs can also contribute to the normal growth and development of Arabidopsis. Here, we review recent progress in understanding the biological functions and signaling network of SNAREs in vesicle trafficking and the regulation of root growth and development in Arabidopsis.
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29
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Vignesh P, Mahadevaiah C, Parimalan R, Valarmathi R, Dharshini S, Nisha S, Suresha GS, Swathi S, Mahadeva Swamy HK, Sreenivasa V, Mohanraj K, Hemaprabha G, Bakshi R, Appunu C. Comparative de novo transcriptome analysis identifies salinity stress responsive genes and metabolic pathways in sugarcane and its wild relative Erianthus arundinaceus [Retzius] Jeswiet. Sci Rep 2021; 11:24514. [PMID: 34972826 PMCID: PMC8720094 DOI: 10.1038/s41598-021-03735-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 12/08/2021] [Indexed: 11/09/2022] Open
Abstract
Erianthus arundinaceus [Retzius] Jeswiet, a wild relative of sugarcane has a high biomass production potential and a reservoir of many genes for superior agronomic traits and tolerance to biotic and abiotic stresses. A comparative physiological, anatomical and root transcriptome analysis were carried out to identify the salt-responsive genes and metabolic pathways associated with salt-tolerant E. arundinaceus genotype IND99-907 and salinity-sensitive sugarcane genotype Co 97010. IND99-907 recorded growth of young leaves, higher proline content, higher relative water content, intact root anatomical structures and lower Na+/K+, Ca2+/K+ and Mg2+/K+ ratio as compared to the sugarcane genotype Co 97010. We have generated four de novo transcriptome assemblies between stressed and control root samples of IND99-907 and Co 97010. A total of 649 and 501 differentially expressed genes (FDR<0.01) were identified from the stressed and control libraries of IND99-907 and Co 97010 respectively. Genes and pathways related to early stress-responsive signal transduction, hormone signalling, cytoskeleton organization, cellular membrane stabilization, plasma membrane-bound calcium and proton transport, sodium extrusion, secondary metabolite biosynthesis, cellular transporters related to plasma membrane-bound trafficking, nucleobase transporter, clathrin-mediated endocytosis were highly enriched in IND99-907. Whereas in Co 97010, genes related to late stress-responsive signal transduction, electron transport system, senescence, protein degradation and programmed cell death, transport-related genes associated with cellular respiration and mitochondrial respiratory chain, vesicular trafficking, nitrate transporter and fewer secondary metabolite biosynthetic genes were highly enriched. A total of 27 pathways, 24 biological processes, three molecular functions and one cellular component were significantly enriched (FDR≤ 0.05) in IND99-907 as compared to 20 pathways, two biological processes without any significant molecular function and cellular components in Co 97010, indicates the unique and distinct expression pattern of genes and metabolic pathways in both genotypes. The genomic resources developed from this study is useful for sugarcane crop improvement through development of genic SSR markers and genetic engineering approaches.
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Affiliation(s)
- P Vignesh
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
| | - C Mahadevaiah
- ICAR-Sugarcane Breeding Institute, Coimbatore, India.
| | - R Parimalan
- ICAR-National Bureau of Plant Genetic Resources, New Delhi, India
- Queensland Alliance for Agriculture and Food Innovation, University of Queensland, Brisbane, Australia
| | - R Valarmathi
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
| | - S Dharshini
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
| | - Singh Nisha
- ICAR-National Institute for Plant Biotechnology, New Delhi, India
- Institute for Genomic Diversity, Cornell University, Ithaca, NY, 14853, USA
| | - G S Suresha
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
| | - S Swathi
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
| | | | - V Sreenivasa
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
| | - K Mohanraj
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
| | - G Hemaprabha
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
| | - Ram Bakshi
- ICAR-Sugarcane Breeding Institute, Coimbatore, India
| | - C Appunu
- ICAR-Sugarcane Breeding Institute, Coimbatore, India.
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30
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Ambastha V, Matityahu I, Tidhar D, Leshem Y. RabA2b Overexpression Alters the Plasma-Membrane Proteome and Improves Drought Tolerance in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2021; 12:738694. [PMID: 34691115 PMCID: PMC8526897 DOI: 10.3389/fpls.2021.738694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/13/2021] [Indexed: 06/07/2023]
Abstract
Rab proteins are small GTPases that are important in the regulation of vesicle trafficking. Through data mining, we identified RabA2b to be stress responsive, though little is known about the involvement of RabA in plant responses to abiotic stresses. Analysis of the RabA2b native promoter showed strong activity during osmotic stress, which required the stress hormone Abscisic acid (ABA) and was restricted to the vasculature. Sequence analysis of the promoter region identified predicted binding motifs for several ABA-responsive transcription factors. We cloned RabA2b and overexpressed it in Arabidopsis. The resulting transgenic plants were strikingly drought resistant. The reduced water loss observed in detached leaves of the transgenic plants could not be explained by stomatal aperture or density, which was similar in all the genotypes. Subcellular localization studies detected strong colocalization between RabA2b and the plasma membrane (PM) marker PIP2. Further studies of the PM showed, for the first time, a distinguished alteration in the PM proteome as a result of RabA2b overexpression. Proteomic analysis of isolated PM fractions showed enrichment of stress-coping proteins as well as cell wall/cuticle modifiers in the transgenic lines. Finally, the cuticle permeability of transgenic leaves was significantly reduced compared to the wild type, suggesting that it plays a role in its drought resistant properties. Overall, these data provide new insights into the roles and modes of action of RabA2b during water stresses, and indicate that increased RabA2b mediated PM trafficking can affect the PM proteome and increase drought tolerance.
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Affiliation(s)
- Vivek Ambastha
- Department of Plant Sciences, MIGAL – Galilee Research Institute, Kiryat Shmona, Israel
| | - Ifat Matityahu
- Department of Plant Sciences, MIGAL – Galilee Research Institute, Kiryat Shmona, Israel
| | - Dafna Tidhar
- Department of Plant Sciences, MIGAL – Galilee Research Institute, Kiryat Shmona, Israel
- Faculty of Sciences and Technology, Tel-Hai College, Upper Galilee, Israel
| | - Yehoram Leshem
- Department of Plant Sciences, MIGAL – Galilee Research Institute, Kiryat Shmona, Israel
- Faculty of Sciences and Technology, Tel-Hai College, Upper Galilee, Israel
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31
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Neves J, Sampaio M, Séneca A, Pereira S, Pissarra J, Pereira C. Abiotic Stress Triggers the Expression of Genes Involved in Protein Storage Vacuole and Exocyst-Mediated Routes. Int J Mol Sci 2021; 22:ijms221910644. [PMID: 34638986 PMCID: PMC8508612 DOI: 10.3390/ijms221910644] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 09/23/2021] [Accepted: 09/29/2021] [Indexed: 12/20/2022] Open
Abstract
Adverse conditions caused by abiotic stress modulate plant development and growth by altering morphological and cellular mechanisms. Plants’ responses/adaptations to stress often involve changes in the distribution and sorting of specific proteins and molecules. Still, little attention has been given to the molecular mechanisms controlling these rearrangements. We tested the hypothesis that plants respond to stress by remodelling their endomembranes and adapting their trafficking pathways. We focused on the molecular machinery behind organelle biogenesis and protein trafficking under abiotic stress conditions, evaluating their effects at the subcellular level, by looking at ultrastructural changes and measuring the expression levels of genes involved in well-known intracellular routes. The results point to a differential response of the endomembrane system, showing that the genes involved in the pathway to the Protein Storage Vacuole and the exocyst-mediated routes are upregulated. In contrast, the ones involved in the route to the Lytic Vacuole are downregulated. These changes are accompanied by morphological alterations of endomembrane compartments. The data obtained demonstrate that plants’ response to abiotic stress involves the differential expression of genes related to protein trafficking machinery, which can be connected to the activation/deactivation of specific intracellular sorting pathways and lead to alterations in the cell ultrastructure.
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Affiliation(s)
- João Neves
- Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, s/n°, 4169-007 Porto, Portugal; (J.N.); (M.S.); (A.S.); (S.P.); (J.P.)
| | - Miguel Sampaio
- Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, s/n°, 4169-007 Porto, Portugal; (J.N.); (M.S.); (A.S.); (S.P.); (J.P.)
- GreenUPorto-Sustainable Agrifood Production Research Centre, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n°, 4169-007 Porto, Portugal
| | - Ana Séneca
- Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, s/n°, 4169-007 Porto, Portugal; (J.N.); (M.S.); (A.S.); (S.P.); (J.P.)
- GreenUPorto-Sustainable Agrifood Production Research Centre, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n°, 4169-007 Porto, Portugal
| | - Susana Pereira
- Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, s/n°, 4169-007 Porto, Portugal; (J.N.); (M.S.); (A.S.); (S.P.); (J.P.)
- GreenUPorto-Sustainable Agrifood Production Research Centre, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n°, 4169-007 Porto, Portugal
| | - José Pissarra
- Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, s/n°, 4169-007 Porto, Portugal; (J.N.); (M.S.); (A.S.); (S.P.); (J.P.)
- GreenUPorto-Sustainable Agrifood Production Research Centre, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n°, 4169-007 Porto, Portugal
| | - Cláudia Pereira
- Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, s/n°, 4169-007 Porto, Portugal; (J.N.); (M.S.); (A.S.); (S.P.); (J.P.)
- GreenUPorto-Sustainable Agrifood Production Research Centre, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n°, 4169-007 Porto, Portugal
- Correspondence:
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Hou S, Shi J, Hao L, Wang Z, Liao Y, Gu H, Dong J, Dresselhaus T, Zhong S, Qu LJ. VPS18-regulated vesicle trafficking controls the secretion of pectin and its modifying enzyme during pollen tube growth in Arabidopsis. THE PLANT CELL 2021; 33:3042-3056. [PMID: 34125904 PMCID: PMC8462820 DOI: 10.1093/plcell/koab164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 06/03/2021] [Indexed: 05/07/2023]
Abstract
In eukaryotes, homotypic fusion and vacuolar protein sorting (HOPS) as well as class C core vacuole/endosome tethering (CORVET) are evolutionarily conserved membrane tethering complexes that play important roles in lysosomal/vacuolar trafficking. Whether HOPS and CORVET control endomembrane trafficking in pollen tubes, the fastest growing plant cells, remains largely elusive. In this study, we demonstrate that the four core components shared by the two complexes, Vacuole protein sorting 11 (VPS11), VPS16, VPS33, and VPS18, are all essential for pollen tube growth in Arabidopsis thaliana and thus for plant reproduction success. We used VPS18 as a representative core component of the complexes to show that the protein is localized to both multivesicular bodies (MVBs) and the tonoplast in a growing pollen tube. Mutant vps18 pollen tubes grew more slowly in vivo, resulting in a significant reduction in male transmission efficiency. Additional studies revealed that membrane fusion from MVBs to vacuoles is severely compromised in vps18 pollen tubes, corroborating the function of VPS18 in late endocytic trafficking. Furthermore, vps18 pollen tubes produce excessive exocytic vesicles at the apical zone and excessive amounts of pectin and pectin methylesterases in the cell wall. In conclusion, this study establishes an additional conserved role of HOPS/CORVET in homotypic membrane fusion during vacuole biogenesis in pollen tubes and reveals a feedback regulation of HOPS/CORVET in the secretion of cell wall modification enzymes of rapidly growing plant cells.
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Affiliation(s)
- Saiying Hou
- State Key Laboratory for Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences at College of Life Sciences, Peking University, Beijing 100871, People’s Republic of China
| | - Jiao Shi
- State Key Laboratory for Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences at College of Life Sciences, Peking University, Beijing 100871, People’s Republic of China
| | - Lihong Hao
- State Key Laboratory for Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences at College of Life Sciences, Peking University, Beijing 100871, People’s Republic of China
- School of Life Sciences, Shanxi University, Taiyuan, Shanxi Province 030006, People’s Republic of China
| | - Zhijuan Wang
- State Key Laboratory for Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences at College of Life Sciences, Peking University, Beijing 100871, People’s Republic of China
| | - Yalan Liao
- State Key Laboratory for Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences at College of Life Sciences, Peking University, Beijing 100871, People’s Republic of China
| | - Hongya Gu
- State Key Laboratory for Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences at College of Life Sciences, Peking University, Beijing 100871, People’s Republic of China
| | - Juan Dong
- The Waksman Institute of Microbiology, Rutgers the State University of New Jersey, Piscataway, New Jersey 08854, USA
| | - Thomas Dresselhaus
- Cell Biology and Plant Biochemistry, University of Regensburg, 93053 Regensburg, Germany
| | - Sheng Zhong
- Author for correspondence: (S.Z.), (L.-J.Q.)
| | - Li-Jia Qu
- Author for correspondence: (S.Z.), (L.-J.Q.)
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Zhang T, Xiao Z, Liu C, Yang C, Li J, Li H, Gao C, Shen W. Autophagy Mediates the Degradation of Plant ESCRT Component FREE1 in Response to Iron Deficiency. Int J Mol Sci 2021; 22:ijms22168779. [PMID: 34445480 PMCID: PMC8396019 DOI: 10.3390/ijms22168779] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/10/2021] [Accepted: 08/14/2021] [Indexed: 01/06/2023] Open
Abstract
Multivesicular body (MVB)-mediated endosomal sorting and macroautophagy are the main pathways mediating the transport of cellular components to the vacuole and are essential for maintaining cellular homeostasis. The interplay of these two pathways remains poorly understood in plants. In this study, we show that FYVE DOMAIN PROTEIN REQUIRED FOR ENDOSOMAL SORTING 1 (FREE1), which was previously identified as a plant-specific component of the endosomal sorting complex required for transport (ESCRT), essential for MVB biogenesis and plant growth, can be transported to the vacuole for degradation in response to iron deficiency. The vacuolar transport of ubiquitinated FREE1 protein is mediated by the autophagy pathway. As a consequence, the autophagy deficient mutants, atg5-1 and atg7-2, accumulate more endogenous FREE1 protein and display hypersensitivity to iron deficiency. Furthermore, under iron-deficient growth condition autophagy related genes are upregulated to promote the autophagic degradation of FREE1, thereby possibly relieving the repressive effect of FREE1 on iron absorption. Collectively, our findings demonstrate a unique regulatory mode of protein turnover of the ESCRT machinery through the autophagy pathway to respond to iron deficiency in plants.
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Affiliation(s)
- Tianrui Zhang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (T.Z.); (C.L.); (C.Y.); (J.L.); (H.L.); (C.G.)
| | - Zhidan Xiao
- Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research, Institute of Fruit Tree Research, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;
| | - Chuanliang Liu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (T.Z.); (C.L.); (C.Y.); (J.L.); (H.L.); (C.G.)
| | - Chao Yang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (T.Z.); (C.L.); (C.Y.); (J.L.); (H.L.); (C.G.)
| | - Jiayi Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (T.Z.); (C.L.); (C.Y.); (J.L.); (H.L.); (C.G.)
| | - Hongbo Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (T.Z.); (C.L.); (C.Y.); (J.L.); (H.L.); (C.G.)
| | - Caiji Gao
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (T.Z.); (C.L.); (C.Y.); (J.L.); (H.L.); (C.G.)
| | - Wenjin Shen
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (T.Z.); (C.L.); (C.Y.); (J.L.); (H.L.); (C.G.)
- Correspondence:
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Rendón-Anaya M, Wilson J, Sveinsson S, Fedorkov A, Cottrell J, Bailey MES, Ruņģis D, Lexer C, Jansson S, Robinson KM, Street NR, Ingvarsson PK. Adaptive introgression facilitate adaptation to high latitudes in European aspen (Populus tremula L.). Mol Biol Evol 2021; 38:5034-5050. [PMID: 34329481 PMCID: PMC8557470 DOI: 10.1093/molbev/msab229] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Understanding local adaptation has become a key research area given the ongoing climate challenge and the concomitant requirement to conserve genetic resources. Perennial plants, such as forest trees, are good models to study local adaptation given their wide geographic distribution, largely outcrossing mating systems, and demographic histories. We evaluated signatures of local adaptation in European aspen (Populus tremula) across Europe by means of whole-genome resequencing of a collection of 411 individual trees. We dissected admixture patterns between aspen lineages and observed a strong genomic mosaicism in Scandinavian trees, evidencing different colonization trajectories into the peninsula from Russia, Central and Western Europe. As a consequence of the secondary contacts between populations after the last glacial maximum, we detected an adaptive introgression event in a genome region of ∼500 kb in chromosome 10, harboring a large-effect locus that has previously been shown to contribute to adaptation to the short growing seasons characteristic of Northern Scandinavia. Demographic simulations and ancestry inference suggest an Eastern origin—probably Russian—of the adaptive Nordic allele which nowadays is present in a homozygous state at the north of Scandinavia. The strength of introgression and positive selection signatures in this region is a unique feature in the genome. Furthermore, we detected signals of balancing selection, shared across regional populations, that highlight the importance of standing variation as a primary source of alleles that facilitate local adaptation. Our results, therefore, emphasize the importance of migration–selection balance underlying the genetic architecture of key adaptive quantitative traits.
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Affiliation(s)
- Martha Rendón-Anaya
- Linnean Centre for Plant Biology, Department of Plant Biology, Uppsala BioCenter, Swedish University of Agricultural Science, Uppsala, Sweden
| | - Jonathan Wilson
- Linnean Centre for Plant Biology, Department of Plant Biology, Uppsala BioCenter, Swedish University of Agricultural Science, Uppsala, Sweden
| | | | - Aleksey Fedorkov
- Institute of Biology, Komi Science Center, Russian Academy of Sciences, Syktyvkar, Russia
| | - Joan Cottrell
- Forest Research, Northern Research Station, Roslin, UK
| | - Mark E S Bailey
- School of Life Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Dainis Ruņģis
- Genetic Resource Centre, Latvian State Forest Research Institute "Silava", LV2169 Salaspils, Latvia
| | - Christian Lexer
- Department of Botany and Biodiversity Research, University of Vienna, Vienna, Austria
| | - Stefan Jansson
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
| | - Kathryn M Robinson
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
| | - Nathaniel R Street
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, Umeå, Sweden
| | - Pär K Ingvarsson
- Linnean Centre for Plant Biology, Department of Plant Biology, Uppsala BioCenter, Swedish University of Agricultural Science, Uppsala, Sweden
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Zhao Y, Liu Y, Ji X, Sun J, Lv S, Yang H, Zhao X, Hu X. Physiological and proteomic analyses reveal cAMP‐regulated key factors in maize root tolerance to heat stress. Food Energy Secur 2021. [DOI: 10.1002/fes3.309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Yulong Zhao
- State Key Laboratory of Wheat & Maize Crop Science College of Agronomy Henan Agricultural University Zhengzhou China
| | - Yanpei Liu
- State Key Laboratory of Wheat & Maize Crop Science College of Life Science Henan Agricultural University Zhengzhou China
| | - Xiaoming Ji
- College of Tobacco Henan Agricultural University Zhengzhou China
| | - Jinfeng Sun
- State Key Laboratory of Crop Stress Adaptation and Improvement Key Laboratory of Plant Stress Biology School of Life Sciences Henan University Kaifeng China
| | - Shanshan Lv
- State Key Laboratory of Wheat & Maize Crop Science College of Life Science Henan Agricultural University Zhengzhou China
| | - Hao Yang
- State Key Laboratory of Wheat & Maize Crop Science College of Life Science Henan Agricultural University Zhengzhou China
| | - Xia Zhao
- Cereal institute Henan Academy of Agricultural Sciences Zhengzhou China
| | - Xiuli Hu
- State Key Laboratory of Wheat & Maize Crop Science College of Life Science Henan Agricultural University Zhengzhou China
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Salinas-Cornejo J, Madrid-Espinoza J, Verdugo I, Pérez-Díaz J, Martín-Davison AS, Norambuena L, Ruiz-Lara S. The Exocytosis Associated SNAP25-Type Protein, SlSNAP33, Increases Salt Stress Tolerance by Modulating Endocytosis in Tomato. PLANTS 2021; 10:plants10071322. [PMID: 34209492 PMCID: PMC8309203 DOI: 10.3390/plants10071322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 06/22/2021] [Accepted: 06/26/2021] [Indexed: 11/29/2022]
Abstract
In plants, vesicular trafficking is crucial for the response and survival to environmental challenges. The active trafficking of vesicles is essential to maintain cell homeostasis during salt stress. Soluble N-ethylmaleimide-sensitive factor attachment protein receptors (SNAREs) are regulatory proteins of vesicular trafficking. They mediate membrane fusion and guarantee cargo delivery to the correct cellular compartments. SNAREs from the Qbc subfamily are the best-characterized plasma membrane SNAREs, where they control exocytosis during cell division and defense response. The Solanum lycopersicum gene SlSNAP33.2 encodes a Qbc-SNARE protein and is induced under salt stress conditions. SlSNAP33.2 localizes on the plasma membrane of root cells of Arabidopsis thaliana. In order to study its role in endocytosis and salt stress response, we overexpressed the SlSNAP33.2 cDNA in a tomato cultivar. Constitutive overexpression promoted endocytosis along with the accumulation of sodium (Na+) in the vacuoles. It also protected the plant from cell damage by decreasing the accumulation of hydrogen peroxide (H2O2) in the cytoplasm of stressed root cells. Subsequently, the higher level of SlSNAP33.2 conferred tolerance to salt stress in tomato plants. The analysis of physiological and biochemical parameters such as relative water content, the efficiency of the photosystem II, performance index, chlorophyll, and MDA contents showed that tomato plants overexpressing SlSNAP33.2 displayed a better performance under salt stress than wild type plants. These results reveal a role for SlSNAP33.2 in the endocytosis pathway involved in plant response to salt stress. This research shows that SlSNAP33.2 can be an effective tool for the genetic improvement of crop plants.
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Affiliation(s)
- Josselyn Salinas-Cornejo
- Laboratorio de Genómica Funcional, Instituto de Ciencias Biológicas, Universidad de Talca, Talca 3460000, Chile; (J.S.-C.); (J.M.-E.); (I.V.); (J.P.-D.); (A.S.M.-D.)
| | - José Madrid-Espinoza
- Laboratorio de Genómica Funcional, Instituto de Ciencias Biológicas, Universidad de Talca, Talca 3460000, Chile; (J.S.-C.); (J.M.-E.); (I.V.); (J.P.-D.); (A.S.M.-D.)
| | - Isabel Verdugo
- Laboratorio de Genómica Funcional, Instituto de Ciencias Biológicas, Universidad de Talca, Talca 3460000, Chile; (J.S.-C.); (J.M.-E.); (I.V.); (J.P.-D.); (A.S.M.-D.)
| | - Jorge Pérez-Díaz
- Laboratorio de Genómica Funcional, Instituto de Ciencias Biológicas, Universidad de Talca, Talca 3460000, Chile; (J.S.-C.); (J.M.-E.); (I.V.); (J.P.-D.); (A.S.M.-D.)
| | - Alex San Martín-Davison
- Laboratorio de Genómica Funcional, Instituto de Ciencias Biológicas, Universidad de Talca, Talca 3460000, Chile; (J.S.-C.); (J.M.-E.); (I.V.); (J.P.-D.); (A.S.M.-D.)
| | - Lorena Norambuena
- Facultad de Ciencias, Universidad de Chile, Santiago, Ñuñoa 7750000, Chile;
| | - Simón Ruiz-Lara
- Laboratorio de Genómica Funcional, Instituto de Ciencias Biológicas, Universidad de Talca, Talca 3460000, Chile; (J.S.-C.); (J.M.-E.); (I.V.); (J.P.-D.); (A.S.M.-D.)
- Correspondence:
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Chen S, Li X, Yang C, Yan W, Liu C, Tang X, Gao C. Genome-wide Identification and Characterization of FCS-Like Zinc Finger (FLZ) Family Genes in Maize ( Zea mays) and Functional Analysis of ZmFLZ25 in Plant Abscisic Acid Response. Int J Mol Sci 2021; 22:3529. [PMID: 33805388 PMCID: PMC8037668 DOI: 10.3390/ijms22073529] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/13/2021] [Accepted: 03/18/2021] [Indexed: 01/20/2023] Open
Abstract
FCS-like zinc finger family proteins (FLZs), a class of plant-specific scaffold of SnRK1 complex, are involved in the regulation of various aspects of plant growth and stress responses. Most information of FLZ family genes was obtained from the studies in Arabidopsis thaliana, whereas little is known about the potential functions of FLZs in crop plants. In this study, 37 maize FLZ (ZmFLZ) genes were identified to be asymmetrically distributed on 10 chromosomes and can be divided into three subfamilies. Protein interaction and subcellular localization assays demonstrated that eight typical ZmFLZs interacted and partially co-localized with ZmKIN10, the catalytic α-subunit of the SnRK1 complex in maize leaf mesophyll cells. Expression profile analysis revealed that several ZmFLZs were differentially expressed across various tissues and actively responded to diverse abiotic stresses. In addition, ectopic overexpression of ZmFLZ25 in Arabidopsis conferred hypersensitivity to exogenous abscisic acid (ABA) and triggered higher expression of ABA-induced genes, pointing to the positive regulatory role of ZmFLZ25 in plant ABA signaling, a scenario further evidenced by the interactions between ZmFLZ25 and ABA receptors. In summary, these data provide the most comprehensive information on FLZ family genes in maize, and shed light on the biological function of ZmFLZ25 in plant ABA signaling.
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Affiliation(s)
- Shunquan Chen
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (S.C.); (X.L.); (C.Y.); (W.Y.); (C.L.)
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
| | - Xibao Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (S.C.); (X.L.); (C.Y.); (W.Y.); (C.L.)
| | - Chao Yang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (S.C.); (X.L.); (C.Y.); (W.Y.); (C.L.)
| | - Wei Yan
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (S.C.); (X.L.); (C.Y.); (W.Y.); (C.L.)
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
| | - Chuanliang Liu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (S.C.); (X.L.); (C.Y.); (W.Y.); (C.L.)
| | - Xiaoyan Tang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (S.C.); (X.L.); (C.Y.); (W.Y.); (C.L.)
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
| | - Caiji Gao
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China; (S.C.); (X.L.); (C.Y.); (W.Y.); (C.L.)
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Chen X, Wang T, Rehman AU, Wang Y, Qi J, Li Z, Song C, Wang B, Yang S, Gong Z. Arabidopsis U-box E3 ubiquitin ligase PUB11 negatively regulates drought tolerance by degrading the receptor-like protein kinases LRR1 and KIN7. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2021; 63:494-509. [PMID: 33347703 DOI: 10.1111/jipb.13058] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 12/17/2020] [Indexed: 05/06/2023]
Abstract
Both plant receptor-like protein kinases (RLKs) and ubiquitin-mediated proteolysis play crucial roles in plant responses to drought stress. However, the mechanism by which E3 ubiquitin ligases modulate RLKs is poorly understood. In this study, we showed that Arabidopsis PLANT U-BOX PROTEIN 11 (PUB11), an E3 ubiquitin ligase, negatively regulates abscisic acid (ABA)-mediated drought responses. PUB11 interacts with and ubiquitinates two receptor-like protein kinases, LEUCINE RICH REPEAT PROTEIN 1 (LRR1) and KINASE 7 (KIN7), and mediates their degradation during plant responses to drought stress in vitro and in vivo. pub11 mutants were more tolerant, whereas lrr1 and kin7 mutants were more sensitive, to drought stress than the wild type. Genetic analyses show that the pub11 lrr1 kin7 triple mutant exhibited similar drought sensitivity as the lrr1 kin7 double mutant, placing PUB11 upstream of the two RLKs. Abscisic acid and drought treatment promoted the accumulation of PUB11, which likely accelerates LRR1 and KIN7 degradation. Together, our results reveal that PUB11 negatively regulates plant responses to drought stress by destabilizing the LRR1 and KIN7 RLKs.
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Affiliation(s)
- Xuexue Chen
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Tingting Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Amin Ur Rehman
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Yu Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Junsheng Qi
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Zhen Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Chunpeng Song
- Collaborative Innovation Center of Crop Stress Biology, Institute of Plant Stress Biology, Henan University, Kaifeng, 475001, China
| | - Baoshan Wang
- Key Lab of Plant Stress Research, College of Life Science, Shandong Normal University, Ji'nan, 250000, China
| | - Shuhua Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Zhizhong Gong
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
- School of Life Sciences, Institute of Life Science and Green Development, Hebei University, Baoding, 100193, China
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Lu C, Yuan F, Guo J, Han G, Wang C, Chen M, Wang B. Current Understanding of Role of Vesicular Transport in Salt Secretion by Salt Glands in Recretohalophytes. Int J Mol Sci 2021; 22:2203. [PMID: 33672188 PMCID: PMC7926375 DOI: 10.3390/ijms22042203] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/17/2021] [Accepted: 02/19/2021] [Indexed: 12/18/2022] Open
Abstract
Soil salinization is a serious and growing problem around the world. Some plants, recognized as the recretohalophytes, can normally grow on saline-alkali soil without adverse effects by secreting excessive salt out of the body. The elucidation of the salt secretion process is of great significance for understanding the salt tolerance mechanism adopted by the recretohalophytes. Between the 1950s and the 1970s, three hypotheses, including the osmotic potential hypothesis, the transfer system similar to liquid flow in animals, and vesicle-mediated exocytosis, were proposed to explain the salt secretion process of plant salt glands. More recently, increasing evidence has indicated that vesicular transport plays vital roles in salt secretion of recretohalophytes. Here, we summarize recent findings, especially regarding the molecular evidence on the functional roles of vesicular trafficking in the salt secretion process of plant salt glands. A model of salt secretion in salt gland is also proposed.
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Affiliation(s)
| | | | | | | | | | | | - Baoshan Wang
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Sciences, Shandong Normal University, Jinan 250014, China; (C.L.); (F.Y.); (J.G.); (G.H.); (C.W.); (M.C.)
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40
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Zhang P, Qian D, Luo C, Niu Y, Li T, Li C, Xiang Y, Wang X, Niu Y. Arabidopsis ADF5 Acts as a Downstream Target Gene of CBFs in Response to Low-Temperature Stress. Front Cell Dev Biol 2021; 9:635533. [PMID: 33585491 PMCID: PMC7876393 DOI: 10.3389/fcell.2021.635533] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/08/2021] [Indexed: 12/13/2022] Open
Abstract
Low temperature is a major adverse environment that affects normal plant growth. Previous reports showed that the actin cytoskeleton plays an important role in the plant response to low-temperature stress, but the regulatory mechanism of the actin cytoskeleton in this process is not clear. C-repeat binding factors (CBFs) are the key molecular switches for plants to adapt to cold stress. However, whether CBFs are involved in the regulation of the actin cytoskeleton has not been reported. We found that Arabidopsis actin depolymerizing factor 5 (ADF5), an ADF that evolved F-actin bundling function, was up-regulated at low temperatures. We also demonstrated that CBFs bound to the ADF5 promoter directly in vivo and in vitro. The cold-induced expression of ADF5 was significantly inhibited in the cbfs triple mutant. The freezing resistance of the adf5 knockout mutant was weaker than that of wild type (WT) with or without cold acclimation. After low-temperature treatment, the actin cytoskeleton of WT was relatively stable, but the actin cytoskeletons of adf5, cbfs, and adf5 cbfs were disturbed to varying degrees. Compared to WT, the endocytosis rate of the amphiphilic styryl dye FM4-64 in adf5, cbfs, and adf5 cbfs at low temperature was significantly reduced. In conclusion, CBFs directly combine with the CRT/DRE DNA regulatory element of the ADF5 promoter after low-temperature stress to transcriptionally activate the expression of ADF5; ADF5 further regulates the actin cytoskeleton dynamics to participate in the regulation of plant adaptation to a low-temperature environment.
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Affiliation(s)
- Pan Zhang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Dong Qian
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Changxin Luo
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Yingzhi Niu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Tian Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Chengying Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Yun Xiang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Xinyu Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Yue Niu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, China
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Zhang M, Hu S, Yi F, Gao Y, Zhu D, Wang Y, Cai Y, Hou D, Lin X, Shen J. Organelle Visualization With Multicolored Fluorescent Markers in Bamboo. FRONTIERS IN PLANT SCIENCE 2021; 12:658836. [PMID: 33936145 PMCID: PMC8081836 DOI: 10.3389/fpls.2021.658836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 03/12/2021] [Indexed: 05/03/2023]
Abstract
Bamboo is an important model plant to study the molecular mechanisms of rapid shoot growth and flowering once in a lifetime. However, bamboo research about protein functional characterization is largely lagged behind, mainly due to the lack of gene transformation platforms. In this study, a protoplast transient gene expression system in moso bamboo has been first established. Using this reliable and efficient system, we have generated a set of multicolored fluorescent markers based on the targeting sequences from endogenous proteins, which have been validated by their comparative localization with Arabidopsis organelle markers, in a combination with pharmaceutical treatments. Moreover, we further demonstrated the power of this multicolor marker set for rapid, combinatorial analysis of the subcellular localization of uncharacterized proteins, which may play potential functions in moso bamboo flowering and fast growth of shoots. Finally, this protoplast transient gene expression system has been elucidated for functional analysis in protein-protein interaction by fluorescence resonance energy transfer (FRET) and co-immunoprecipitation analysis. Taken together, in combination with the set of moso bamboo organelle markers, the protoplast transient gene expression system could be used for subcellular localization and functional study of unknown proteins in bamboo and will definitely promote rapid progress in diverse areas of research in bamboo plants.
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Affiliation(s)
- Mengdi Zhang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Shuai Hu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Fang Yi
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Yanli Gao
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Dongmei Zhu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Yizhu Wang
- College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Yi Cai
- College of Life Science, Sichuan Agricultural University, Ya'an, China
| | - Dan Hou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Xinchun Lin
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Jinbo Shen
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
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Yepes-Molina L, Bárzana G, Carvajal M. Controversial Regulation of Gene Expression and Protein Transduction of Aquaporins under Drought and Salinity Stress. PLANTS 2020; 9:plants9121662. [PMID: 33261103 PMCID: PMC7761296 DOI: 10.3390/plants9121662] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 12/31/2022]
Abstract
Enhancement of the passage of water through membranes is one of the main mechanisms via which cells can maintain their homeostasis under stress conditions, and aquaporins are the main participants in this process. However, in the last few years, a number of studies have reported discrepancies between aquaporin messenger RNA (mRNA) expression and the number of aquaporin proteins synthesised in response to abiotic stress. These observations suggest the existence of post-transcriptional mechanisms which regulate plasma membrane intrinsic protein (PIP) trafficking to the plasma membrane. This indicates that the mRNA synthesis of some aquaporins could be modulated by the accumulation of the corresponding encoded protein, in relation to the turnover of the membranes. This aspect is discussed in terms of the results obtained: on the one hand, with isolated vesicles, in which the level of proteins present provides the membranes with important characteristics such as resistance and stability and, on the other, with isolated proteins reconstituted in artificial liposomes as an in vitro method to address the in vivo physiology of the entire plant.
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Szepesi Á. Halotropism: Phytohormonal Aspects and Potential Applications. FRONTIERS IN PLANT SCIENCE 2020; 11:571025. [PMID: 33042187 PMCID: PMC7527526 DOI: 10.3389/fpls.2020.571025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 09/02/2020] [Indexed: 05/15/2023]
Abstract
Halotropism is a sodium specific tropic movement of roots in order to obtain the optimal salt concentration for proper growth and development. Numerous results suggest that halotropic events are under the control and regulation of complex plant hormone pathway. This minireview collects some recent evidences about sodium sensing during halotropism and the hormonal regulation of halotropic responses in glycophytes. The precise hormonal mechanisms by which halophytes plant roots perceive salt stress and translate this perception into adaptive, directional growth forward increased salt concentrations are not well understood. This minireview aims to gather recently deciphered information about halotropism focusing potential hormonal aspects both in glycophytes and halophytes. Advances in our understanding of halotropic responses in different plant species could help these plants to be used for sustainable agriculture and other future applications.
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Affiliation(s)
- Ágnes Szepesi
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
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44
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Xiao Z, Yang C, Liu C, Yang L, Yang S, Zhou J, Li F, Jiang L, Xiao S, Gao C, Shen W. SINAT E3 ligases regulate the stability of the ESCRT component FREE1 in response to iron deficiency in plants. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2020; 62:1399-1417. [PMID: 32786047 DOI: 10.1111/jipb.13005] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 08/12/2020] [Indexed: 05/18/2023]
Abstract
The endosomal sorting complex required for transport (ESCRT) machinery is an ancient, evolutionarily conserved membrane remodeling complex that is essential for multivesicular body (MVB) biogenesis in eukaryotes. FYVE DOMAIN PROTEIN REQUIRED FOR ENDOSOMAL SORTING 1 (FREE1), which was previously identified as a plant-specific ESCRT component, modulates MVB-mediated endosomal sorting and autophagic degradation. Although the basic cellular functions of FREE1 as an ESCRT component have been described, the regulators that control FREE1 turnover remain unknown. Here, we analyzed how FREE1 homeostasis is mediated by the RING-finger E3 ubiquitin ligases, SINA of Arabidopsis thaliana (SINATs), in response to iron deficiency. Under iron-deficient growth conditions, SINAT1-4 were induced and ubiquitinated FREE1, thereby promoting its degradation and relieving the repressive effect of FREE1 on iron absorption. By contrast, SINAT5, another SINAT member that lacks ubiquitin ligase activity due to the absence of the RING domain, functions as a protector protein which stabilizes FREE1. Collectively, our findings uncover a hitherto unknown mechanism of homeostatic regulation of FREE1, and demonstrate a unique regulatory SINAT-FREE1 module that subtly regulates plant response to iron deficiency stress.
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Affiliation(s)
- Zhidan Xiao
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Chao Yang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Chuanliang Liu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Lianming Yang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Shuhong Yang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Jun Zhou
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, China
| | - Faqiang Li
- College of Life Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Liwen Jiang
- School of Life Sciences, Center for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, New Territories, Hong Kong, China
| | - Shi Xiao
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
| | - Caiji Gao
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Wenjin Shen
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
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Zhu Y, Ji C, Cao W, Shen J, Zhao Q, Jiang L. Identification and characterization of unconventional membrane protein trafficking regulators in Arabidopsis: A genetic approach. JOURNAL OF PLANT PHYSIOLOGY 2020; 252:153229. [PMID: 32750645 DOI: 10.1016/j.jplph.2020.153229] [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: 02/10/2020] [Revised: 07/07/2020] [Accepted: 07/07/2020] [Indexed: 06/11/2023]
Abstract
Proper trafficking and subcellular localization of membrane proteins are essential for plant growth and development. The plant endomembrane system contains several membrane-bound organelles with distinct functions including the endoplasmic reticulum (ER), Golgi apparatus, trans-Golgi network (TGN) or early endosome, prevacuolar compartment (PVC) or multivesicular body (MVB) and vacuole. Multiple approaches have been successfully used to identify and study the regulators and components important for signal transduction, growth and development, as well as membrane trafficking in the endomembrane system in plants. These include the homologous characterization of the counterparts in mammals or yeast employing both reverse genetic as well as the forward genetic screen approaches. However, the deletion or mutation of membrane trafficking related proteins usually leads to seedling lethality due to their essential roles in plant development and organelle biogenesis. To overcome the limitation of lethal phenotype of the target proteins, we used DEX-inducible RNAi knock-down lines to study their function in plants. More recently, we developed and used both RNAi knock-down and T-DNA insertional lines as starting materials to screen for mutations that could suppress and rescue the lethal phenotype, or a suppressor screening. Further characterization of the newly identified suppressor mutants has resulted in the identification of novel negative regulators in mediating membrane trafficking and organelle biogenesis in plants. In this review, we summarize the current approaches in studying protein trafficking in the endomembrane system. We then describe three examples of suppressor screening with distinct starting materials (i.e. FREE1, MON1, and SH3P2 that are regulators of MVB, vacuole, and autophagosomes, respectively) to discuss the rationale, procedures, advantages and disadvantages, and possible outcomes of such a suppressor screening. We finally propose that these novel screening approaches will lead to the identification of new unconventional players in regulating protein trafficking and organelle biogenesis in plants and discuss their impact on plant cell biology research.
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Affiliation(s)
- Ying Zhu
- Center for Cell and Developmental Biology, School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Changyang Ji
- Center for Cell and Developmental Biology, School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Wenhan Cao
- Center for Cell and Developmental Biology, School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Jinbo Shen
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Qiong Zhao
- Center for Cell and Developmental Biology, School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Liwen Jiang
- Center for Cell and Developmental Biology, School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China; CUHK Shenzhen Research Institute, Shenzhen, China.
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Zhang J, Mazur E, Balla J, Gallei M, Kalousek P, Medveďová Z, Li Y, Wang Y, Prát T, Vasileva M, Reinöhl V, Procházka S, Halouzka R, Tarkowski P, Luschnig C, Brewer PB, Friml J. Strigolactones inhibit auxin feedback on PIN-dependent auxin transport canalization. Nat Commun 2020; 11:3508. [PMID: 32665554 PMCID: PMC7360611 DOI: 10.1038/s41467-020-17252-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Accepted: 06/15/2020] [Indexed: 11/27/2022] Open
Abstract
Directional transport of the phytohormone auxin is a versatile, plant-specific mechanism regulating many aspects of plant development. The recently identified plant hormones, strigolactones (SLs), are implicated in many plant traits; among others, they modify the phenotypic output of PIN-FORMED (PIN) auxin transporters for fine-tuning of growth and developmental responses. Here, we show in pea and Arabidopsis that SLs target processes dependent on the canalization of auxin flow, which involves auxin feedback on PIN subcellular distribution. D14 receptor- and MAX2 F-box-mediated SL signaling inhibits the formation of auxin-conducting channels after wounding or from artificial auxin sources, during vasculature de novo formation and regeneration. At the cellular level, SLs interfere with auxin effects on PIN polar targeting, constitutive PIN trafficking as well as clathrin-mediated endocytosis. Our results identify a non-transcriptional mechanism of SL action, uncoupling auxin feedback on PIN polarity and trafficking, thereby regulating vascular tissue formation and regeneration.
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Affiliation(s)
- Jing Zhang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China.
| | - Ewa Mazur
- University of Silesia in Katowice, Faculty of Natural Sciences, Institute of Biology, Biotechnology and Environmental Protection, Jagiellońska 28, 40-032, Katowice, Poland
- Mendel Centre for Plant Genomics and Proteomics, Central European Institute of Technology (CEITEC), Masaryk University (MU), 62500, Brno, Czech Republic
| | - Jozef Balla
- Central European Institute of Technology (CEITEC), Mendel University in Brno, Zemedelska 1, 61300, Brno, Czech Republic
- Department of Plant Biology, Mendel University in Brno, Zemedelska 1, 61300, Brno, Czech Republic
| | - Michelle Gallei
- Institute of Science and Technology (IST), Klosterneuburg, 3400, Austria
| | - Petr Kalousek
- Department of Plant Biology, Mendel University in Brno, Zemedelska 1, 61300, Brno, Czech Republic
| | - Zuzana Medveďová
- Central European Institute of Technology (CEITEC), Mendel University in Brno, Zemedelska 1, 61300, Brno, Czech Republic
| | - Yang Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Yaping Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Tomáš Prát
- Institute of Science and Technology (IST), Klosterneuburg, 3400, Austria
| | - Mina Vasileva
- Institute of Science and Technology (IST), Klosterneuburg, 3400, Austria
| | - Vilém Reinöhl
- Central European Institute of Technology (CEITEC), Mendel University in Brno, Zemedelska 1, 61300, Brno, Czech Republic
| | - Stanislav Procházka
- Central European Institute of Technology (CEITEC), Mendel University in Brno, Zemedelska 1, 61300, Brno, Czech Republic
| | - Rostislav Halouzka
- Central Laboratories and Research Support, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Petr Tarkowski
- Central Laboratories and Research Support, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University, Šlechtitelů 27, 78371, Olomouc, Czech Republic
| | - Christian Luschnig
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Vienna (BOKU), Muthgasse 18, 1190, Wien, Austria
| | - Philip B Brewer
- ARC Centre of Excellence in Plant Energy Biology, School of Agriculture, Food and Wine, Waite Research Precinct, The University of Adelaide, Glen Osmond, SA, 5064, Australia
| | - Jiří Friml
- Institute of Science and Technology (IST), Klosterneuburg, 3400, Austria.
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Agarwal P, Patel K, More P, Sapara KK, Singh VK, Agarwal PK. The AlRabring7 E3-Ub-ligase mediates AlRab7 ubiquitination and improves ionic and oxidative stress tolerance in Saccharomyces cerevisiae. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 151:689-704. [PMID: 32353675 DOI: 10.1016/j.plaphy.2020.03.030] [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: 12/05/2019] [Revised: 03/13/2020] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
The maintenance of ROS homeostasis, membrane biogenesis and recycling of molecules are common stress responses involving specific and complex regulatory network. Ubiquitination is an important and common mechanism which facilitates environmental adaptation in eukaryotes. In the present study we have cloned the AlRabring7, an E3-Ub-ligase, previously identified as AlRab7 interacting partner. The role of AlRabring7 for ubiquitinating AlRab7 and facilitating stress tolerance is analysed. The AlRabring7, with an open-reading frame of 702 bp encodes a protein of 233 amino acids, with RING-HC domain of 40 amino acids. In silico analysis shows that AlRabring7 is a C3HC4-type RING E3 Ub ligase. The protein - protein docking show interaction dynamics between AlRab7-AlRabring7-Ubiquitin proteins. The AlRab7 and AlRabring7 transcript showed up-regulation in response to different salts i.e: NaCl, KCl, CaCl2, NaCl + KCl, NaCl + CaCl2, imposing ionic as well as hyperosmotic stress, and also with oxidative stress by H2O2 treatment. Interestingly, the AlRabring7 showed early transcript expression with maximum expression in shoots on combinatorial stresses. The AlRab7 showed delayed and maximum expression with NaCl + CaCl2 stress treatment. The AlRab7 complements yeast ypt7Δ mutants and restored the fragmented vacuole. The in vitro ubiquitination assay revealed that AlRabring7 function as E3 ubiquitin ligase and mediates AlRab7 ubiquitination. Overexpression of AlRab7 and AlRabring7 independently and when co-transformed enhanced the growth of yeast cells during stress conditions. Further, the bimolecular fluorescence complementation assay shows the in planta interaction of the two proteins. Our results suggest that AlRab7 and AlRabring7 confers enhanced stress tolerance in yeast.
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Affiliation(s)
- Parinita Agarwal
- Plant Omics Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific & Industrial Research (CSIR), Gijubhai Badheka Marg, Bhavnagar, 364 002, Gujarat, India.
| | - Khantika Patel
- Plant Omics Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific & Industrial Research (CSIR), Gijubhai Badheka Marg, Bhavnagar, 364 002, Gujarat, India
| | - Prashant More
- Plant Omics Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific & Industrial Research (CSIR), Gijubhai Badheka Marg, Bhavnagar, 364 002, Gujarat, India; Academy of Scientific and Innovative Research, (AcSIR), Ghaziabad, 201002, India
| | - Komal K Sapara
- Plant Omics Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific & Industrial Research (CSIR), Gijubhai Badheka Marg, Bhavnagar, 364 002, Gujarat, India; Academy of Scientific and Innovative Research, (AcSIR), Ghaziabad, 201002, India
| | - Vinay K Singh
- Centre for Bioinformatics, School of Biotechnology, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Pradeep K Agarwal
- Plant Omics Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific & Industrial Research (CSIR), Gijubhai Badheka Marg, Bhavnagar, 364 002, Gujarat, India; Academy of Scientific and Innovative Research, (AcSIR), Ghaziabad, 201002, India
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Yang C, Shen W, Yang L, Sun Y, Li X, Lai M, Wei J, Wang C, Xu Y, Li F, Liang S, Yang C, Zhong S, Luo M, Gao C. HY5-HDA9 Module Transcriptionally Regulates Plant Autophagy in Response to Light-to-Dark Conversion and Nitrogen Starvation. MOLECULAR PLANT 2020; 13:515-531. [PMID: 32087368 DOI: 10.1016/j.molp.2020.02.011] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/12/2020] [Accepted: 02/13/2020] [Indexed: 05/02/2023]
Abstract
Light is arguably one of the most important environmental factors that determines virtually all aspects of plant growth and development, but the molecular link between light signaling and the autophagy pathway has not been elucidated in plants. In this study, we demonstrate that autophagy is activated during light-to-dark conversion though transcriptional upregulation of autophagy-related genes (ATGs). We showed that depletion of the ELONGATED HYPOCOTYL 5 (HY5), a key component of light signaling, leads to enhanced autophagy activity and resistance to extended darkness and nitrogen starvation treatments, contributing to higher expression of ATGs. HY5 interacts with and recruits HISTONE DEACETYLASE 9 (HDA9) to ATG5 and ATG8e loci to repress their expression by deacetylation of the Lys9 and Lys27 of histone 3. Furthermore, we found that both darkness and nitrogen depletion induce the degradation of HY5 via 26S proteasome and the concomitant disassociation of HDA9 from ATG5 and ATG8e loci, leading to their depression and thereby activated autophagy. Genetic analysis further confirmed that HY5 and HDA9 act synergistically and function upstream of the autophagy pathway. Collectively, our study unveils a previously unknown transcriptional and epigenetic network that regulates autophagy in response to light-to-dark conversion and nitrogen starvation in plants.
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Affiliation(s)
- Chao Yang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Wenjin Shen
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Lianming Yang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Yun Sun
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Xibao Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Minyi Lai
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Juan Wei
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Chaojun Wang
- College of Life Sciences, Leshan Normal University, Leshan 614004, China
| | - Yingchao Xu
- Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Faqiang Li
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Shan Liang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Chengwei Yang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Shangwei Zhong
- School of Advanced Agricultural Sciences and School of Life Sciences, Peking University, 100871 Beijing, China
| | - Ming Luo
- Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou 510650, China; Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou 510650, China.
| | - Caiji Gao
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China.
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Kim HS, Park W, Lee HS, Shin JH, Ahn SJ. Subcellular Journey of Rare Cold Inducible 2 Protein in Plant Under Stressful Condition. FRONTIERS IN PLANT SCIENCE 2020; 11:610251. [PMID: 33510753 PMCID: PMC7835403 DOI: 10.3389/fpls.2020.610251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 12/16/2020] [Indexed: 05/07/2023]
Abstract
Rare cold inducible 2 (RCI2) proteins are small hydrophobic membrane proteins in plants, and it has been widely reported that RCI2 expressions are dramatically induced by salt, cold, and drought stresses in many species. The RCI2 proteins have been shown to regulate plasma membrane (PM) potential and enhance abiotic stress tolerance when over-expressed in plants. RCI2 protein structures contain two transmembrane domains that are thought to be PM intrinsic proteins and have been observed at the PM and endomembranes. However, cellular trafficking of RCI2s are not fully understood. In this review, we discussed (i) general properties of RCI2s characterized in many species, (ii) the uses of RCI2s as a tracer in live cell imaging analyses and when they are fused to fluorescence proteins during investigations into vesicle trafficking, and (iii) RCI2 functionalities such as their involvement in rapid diffusion, endocytosis, and protein interactions. Consequently, the connection between physiological characteristics of RCI2s and traffic of RCI2s interacting membrane proteins might be helpful to understand role of RCI2s contributing abiotic stresses tolerance.
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Affiliation(s)
- Hyun-Sung Kim
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju, South Korea
| | - Won Park
- Bioenergy Crop Research Institute, National Institute of Crop Science, Rural Development Administration, Muan, South Korea
| | - Hyeon-Sook Lee
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju, South Korea
| | - Jung-Ho Shin
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju, South Korea
| | - Sung-Ju Ahn
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju, South Korea
- *Correspondence: Sung-Ju Ahn,
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