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Zhang QY, Ma CN, Gu KD, Wang JH, Yu JQ, Liu B, Wang Y, He JX, Hu DG, Sun Q. The BTB-BACK-TAZ domain protein MdBT2 reduces drought resistance by weakening the positive regulatory effect of MdHDZ27 on apple drought tolerance via ubiquitination. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 119:283-299. [PMID: 38606500 DOI: 10.1111/tpj.16761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/13/2024]
Abstract
Drought stress is one of the dominating challenges to the growth and productivity in crop plants. Elucidating the molecular mechanisms of plants responses to drought stress is fundamental to improve fruit quality. However, such molecular mechanisms are poorly understood in apple (Malus domestica Borkh.). In this study, we explored that the BTB-BACK-TAZ protein, MdBT2, negatively modulates the drought tolerance of apple plantlets. Moreover, we identified a novel Homeodomain-leucine zipper (HD-Zip) transcription factor, MdHDZ27, using a yeast two-hybrid (Y2H) screen with MdBT2 as the bait. Overexpression of MdHDZ27 in apple plantlets, calli, and tomato plantlets enhanced their drought tolerance by promoting the expression of drought tolerance-related genes [responsive to dehydration 29A (MdRD29A) and MdRD29B]. Biochemical analyses demonstrated that MdHDZ27 directly binds to and activates the promoters of MdRD29A and MdRD29B. Furthermore, in vitro and in vivo assays indicate that MdBT2 interacts with and ubiquitinates MdHDZ27, via the ubiquitin/26S proteasome pathway. This ubiquitination results in the degradation of MdHDZ27 and weakens the transcriptional activation of MdHDZ27 on MdRD29A and MdRD29B. Finally, a series of transgenic analyses in apple plantlets further clarified the role of the relationship between MdBT2 and MdHDZ27, as well as the effect of their interaction on drought resistance in apple plantlets. Collectively, our findings reveal a novel mechanism by which the MdBT2-MdHDZ27 regulatory module controls drought tolerance, which is of great significance for enhancing the drought resistance of apple and other plants.
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Affiliation(s)
- Quan-Yan Zhang
- Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resources and Environment, Linyi University, Linyi, Shandong, 276000, China
| | - Chang-Ning Ma
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Kai-Di Gu
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Jia-Hui Wang
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Jian-Qiang Yu
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, Jiangsu, 225009, China
| | - Bo Liu
- Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resources and Environment, Linyi University, Linyi, Shandong, 276000, China
| | - Yun Wang
- Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resources and Environment, Linyi University, Linyi, Shandong, 276000, China
| | - Jun-Xia He
- Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection, College of Resources and Environment, Linyi University, Linyi, Shandong, 276000, China
| | - Da-Gang Hu
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Quan Sun
- National Research Center for Apple Engineering and Technology, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, Shandong, 271018, China
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Liu YH, Zou ZH, Zhang MM, Guan ZJ, Du LD, Hu DG, Zheng CS, Sun CH. The A subunit of vacuolar H +-ATPase gene (CmVHA-A) plays opposite roles in plant growth and drought tolerance of chrysanthemum under different growing conditions. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 344:112105. [PMID: 38663481 DOI: 10.1016/j.plantsci.2024.112105] [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: 01/11/2024] [Revised: 04/02/2024] [Accepted: 04/21/2024] [Indexed: 05/12/2024]
Abstract
As the most prominent proton pumps in plants, vacuolar H+-ATPases (VHAs) comprise multiple subunits that are important for physiological processes and stress tolerance in plants. However, few studies on the roles of subunit genes of VHAs in chrysanthemum have been reported to date. In this study, the gene of A subunit of V-ATPase in chrysanthemum (CmVHA-A) was cloned and identified. CmVHA-A was conserved with VHA-A proteins from other plants. Expression analysis showed that CmVHA-A was highly expressed in most tissues of chrysanthemum except for the flower bud, and was readily induced by polyethylene glycol (PEG) treatment. Functional analysis demonstrated that CmVHA-A exerted a negative influence on the growth and development of shoot and root of chrysanthemum under normal conditions. RNA-sequencing (RNA-seq) analysis revealed the possible explanations for phenotypic differences between transgenic and wild-type (WT) plants. Under drought conditions, CmVHA-A positively affected the drought tolerance of chrysanthemum by enhancing antioxidase activity and alleviating photosynthetic disruption. Overall, CmVHA-A plays opposite roles in plant growth and drought tolerance of chrysanthemums under different growing conditions.
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Affiliation(s)
- Yan-Hong Liu
- Department of Ornamental Horticulture, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Zhen-Hao Zou
- Department of Ornamental Horticulture, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Man-Man Zhang
- Department of Ornamental Horticulture, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Zhang-Ji Guan
- Department of Ornamental Horticulture, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Lian-Da Du
- Department of Ornamental Horticulture, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Da-Gang Hu
- Department of Ornamental Horticulture, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Cheng-Shu Zheng
- Department of Ornamental Horticulture, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China.
| | - Cui-Hui Sun
- Department of Ornamental Horticulture, Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China.
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3
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Liu N, Li C, Wu F, Yang Y, Yu A, Wang Z, Zhao L, Zhang X, Qu F, Gao L, Xia T, Wang P. Genome-wide identification and expression pattern analysis of WRKY transcription factors in response to biotic and abiotic stresses in tea plants (Camellia sinensis). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 211:108670. [PMID: 38703501 DOI: 10.1016/j.plaphy.2024.108670] [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: 01/23/2024] [Revised: 03/21/2024] [Accepted: 04/26/2024] [Indexed: 05/06/2024]
Abstract
Plants would encounter various biotic and abiotic stresses during the growth and development. WRKY transcription factors (TFs) as plant-specific TFs, play an important role in responding to various adverse circumstances. Despite some advances were achieved in functional studies of WRKY TFs in tea plants, systematic analysis of the involvement of CsWRKY TFs when facing cold, salt, drought stresses and pathogen and insect attack was lacked. In present study, a total of 78 CsWRKY TFs were identified following the genomic and transcript databases. The expression patterns of CsWRKYs in various organs of tea plants and the expression profiles in response to biotic and abiotic stresses were investigated by examining representative RNA-seq data. Moreover, the effects of hormone treatments (SA and MeJA) on the transcription levels of WRKY TFs were also investigated. The phylogenetic tree of CsWRKY TFs from different species indicated the functional diversity of WRKY TFs was not closely related to their protein classification. Concurrently, CsWRKY70-2 TF was identified as a positive regulator in response to drought stress. This study provided solid and valuable information, helping us better understand the functional diversity of CsWRKY TFs, and laid the foundation for further research on the function of key WRKY genes in tea plants.
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Affiliation(s)
- Nana Liu
- College of Horticulture, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Caiyun Li
- College of Horticulture, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Feixue Wu
- College of Horticulture, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Yi Yang
- College of Horticulture, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Antai Yu
- College of Horticulture, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Ziteng Wang
- College of Horticulture, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Lei Zhao
- College of Horticulture, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Xinfu Zhang
- College of Horticulture, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Fengfeng Qu
- College of Horticulture, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs, Qingdao Agricultural University, Qingdao, Shandong, 266109, China
| | - Liping Gao
- School of Life Science, Anhui Agricultural University, Hefei, Anhui, 230036, China.
| | - Tao Xia
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui, 230036, China.
| | - Peiqiang Wang
- College of Horticulture, Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs, Qingdao Agricultural University, Qingdao, Shandong, 266109, China.
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4
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Li C, Krishnan S, Zhang M, Hu D, Meng D, Riedelsberger J, Dougherty L, Xu K, Piñeros MA, Cheng L. Alternative Splicing Underpins the ALMT9 Transporter Function for Vacuolar Malic Acid Accumulation in Apple. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2310159. [PMID: 38514904 PMCID: PMC11165477 DOI: 10.1002/advs.202310159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 03/08/2024] [Indexed: 03/23/2024]
Abstract
Vacuolar malic acid accumulation largely determines fruit acidity, a key trait for the taste and flavor of apple and other fleshy fruits. Aluminum-activated malate transporter 9 (ALMT9/Ma1) underlies a major genetic locus, Ma, for fruit acidity in apple, but how the protein transports malate across the tonoplast is unclear. Here, it is shown that overexpression of the coding sequence of Ma1 (Ma1α) drastically decreases fruit acidity in "Royal Gala" apple, leading to uncovering alternative splicing underpins Ma1's function. Alternative splicing generates two isoforms: Ma1β is 68 amino acids shorter with much lower expression than the full-length protein Ma1α. Ma1β does not transport malate itself but interacts with the functional Ma1α to form heterodimers, creating synergy with Ma1α for malate transport in a threshold manner (When Ma1β/Ma1α ≥ 1/8). Overexpression of Ma1α triggers feedback inhibition on the native Ma1 expression via transcription factor MYB73, decreasing the Ma1β level well below the threshold that leads to significant reductions in Ma1 function and malic acid accumulation in fruit. Overexpression of Ma1α and Ma1β or genomic Ma1 increases both isoforms proportionally and enhances fruit malic acid accumulation. These findings reveal an essential role of alternative splicing in ALMT9-mediated malate transport underlying apple fruit acidity.
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Affiliation(s)
- Chunlong Li
- Horticulture Section, School of Integrative Plant ScienceCornell UniversityIthacaNY14853USA
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural CropsCollege of Horticulture and Forestry SciencesHuazhong Agricultural UniversityWuhan430070China
| | | | - Mengxia Zhang
- Horticulture Section, School of Integrative Plant ScienceCornell UniversityIthacaNY14853USA
| | - Dagang Hu
- Horticulture Section, School of Integrative Plant ScienceCornell UniversityIthacaNY14853USA
| | - Dong Meng
- Horticulture Section, School of Integrative Plant ScienceCornell UniversityIthacaNY14853USA
| | - Janin Riedelsberger
- Center for Bioinformatics, Simulation and Modeling, Department of Bioinformatics, Faculty of EngineeringUniversity of TalcaTalca3460000Chile
| | - Laura Dougherty
- Horticulture Section, School of Integrative Plant Science, New York State Agricultural Experiment StationCornell UniversityGenevaNY14456USA
| | - Kenong Xu
- Horticulture Section, School of Integrative Plant Science, New York State Agricultural Experiment StationCornell UniversityGenevaNY14456USA
| | - Miguel A. Piñeros
- Plant Biology Section, School of Integrative Plant Science and Robert W. Holley Center for Agriculture and HealthUSDA‐ARS Cornell UniversityIthacaNY14853USA
| | - Lailiang Cheng
- Horticulture Section, School of Integrative Plant ScienceCornell UniversityIthacaNY14853USA
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Luo D, Usman M, Pang F, Zhang W, Qin Y, Li Q, Li Y, Xing Y, Dong D. Comparative transcriptomic and physiological analyses unravel wheat source root adaptation to phosphorous deficiency. Sci Rep 2024; 14:11050. [PMID: 38745054 PMCID: PMC11094128 DOI: 10.1038/s41598-024-61767-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 05/09/2024] [Indexed: 05/16/2024] Open
Abstract
Phosphorus (P) is a crucial macronutrient for plant growth and development. Basic metabolic processes regulate growth; however, the molecular detail of these pathways under low phosphorous (LP) in wheat is still unclear. This study aims to elucidate the varied regulatory pathways responses to LP stress in wheat genotypes. Phenotypic, physiological, and transcriptome analyses were conducted on Fielder (P efficient) and Ardito (P inefficient) wheat genotypes after four days of normal phosphorous (NP) and LP stress. In response to LP, Fielder outperformed Ardito, displaying higher chlorophyll content-SPAD values (13%), plant height (45%), stem diameter (12%), shoot dry weight (42%), and root biomass (75%). Root structure analysis revealed that Fielder had greater total root length (50%), surface area (56%), volume (15%), and diameter (4%) than Ardito under LP. These findings highlight Fielder's superior performance and adaptation to LP stress. Transcriptome analysis of wheat genotype roots identified 3029 differentially expressed genes (DEGs) in Fielder and 1430 in Ardito, highlighting LP-induced changes. Key DEGs include acid phosphatases (PAPs), phosphate transporters (PHT1 and PHO1), SPX, and transcription factors (MYB, bHLH, and WRKY). KEGG enrichment analysis revealed key pathways like plant hormones signal transduction, biosynthesis of secondary metabolites, and carbohydrate biosynthesis metabolism. This study unveils crucial genes and the intricate regulatory process in wheat's response to LP stress, offering genetic insights for enhancing plant P utilization efficiency.
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Affiliation(s)
- Daozhen Luo
- Guangxi Key Laboratory of Agro-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning, 530004, China
| | - Muhammad Usman
- Guangxi Key Laboratory of Agro-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning, 530004, China
| | - Fei Pang
- Guangxi Key Laboratory of Agro-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning, 530004, China
| | - Wenjie Zhang
- Guangxi Key Laboratory of Agro-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning, 530004, China
| | - Ying Qin
- Guangxi Key Laboratory of Agro-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning, 530004, China
| | - Qing Li
- Guangxi Key Laboratory of Agro-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning, 530004, China
| | - Yangrui Li
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, 530007, China
| | - Yongxiu Xing
- Guangxi Key Laboratory of Agro-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning, 530004, China.
| | - Dengfeng Dong
- Guangxi Key Laboratory of Agro-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning, 530004, China.
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Du L, Guan Z, Liu Y, Hu D, Gao J, Sun C. Scaffold protein BTB/TAZ domain-containing genes (CmBTs) play a negative role in root development of chrysanthemum. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 341:111997. [PMID: 38280641 DOI: 10.1016/j.plantsci.2024.111997] [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: 10/24/2023] [Revised: 12/05/2023] [Accepted: 01/23/2024] [Indexed: 01/29/2024]
Abstract
Scaffold proteins, which are known as hubs controlling information flow in cells, can function in a diverse array of biological processes in plants. The BTB/TAZ domain-containing scaffold proteins are associated with multiple signaling pathways in plants. However, there have been few studies of the roles of BT scaffold proteins in chrysanthemum to date. In this study, four CmBT genes named as CmBT1, CmBT1-LIKE1 (CmBT1L1), CmBT1-LIKE2 (CmBT1L2), and CmBT5 were cloned based our previous RNA-seq database. The four CmBT genes showed distinctive expression patterns both in different tissues and in response to different stimuli, such as light, sugar, nitrate and auxin. Knockdown of the four CmBTs facilitated the development of adventitious roots and root hair in chrysanthemum. Transcriptome sequencing analysis revealed thousands of differentially expressed genes after knockdown of the four CmBT genes. Moreover, functional annotation suggested that CmBTs play a tethering role as scaffold proteins. Our findings reveal that CmBTs can negatively regulate root development of chrysanthemum by mediating nitrate assimilation, amino acid biosynthesis, and auxin and jasmonic acid (JA) signaling pathways. This study provides new insights into the role of CmBTs in root development of chrysanthemum.
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Affiliation(s)
- Lianda Du
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Zhangji Guan
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Yanhong Liu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Dagang Hu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China
| | - Junping Gao
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China
| | - Cuihui Sun
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing, China; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China.
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7
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Miao Y, Hu X, Wang L, Schultze-Kraft R, Wang W, Chen Z. Characterization of SgALMT genes reveals the function of SgALMT2 in conferring aluminum tolerance in Stylosanthes guianensis through the mediation of malate exudation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 208:108535. [PMID: 38503187 DOI: 10.1016/j.plaphy.2024.108535] [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: 01/21/2024] [Revised: 03/12/2024] [Accepted: 03/13/2024] [Indexed: 03/21/2024]
Abstract
Aluminum (Al) toxicity is the major constraint on plant growth and productivity in acidic soils. An adaptive mechanism to enhance Al tolerance in plants is mediated malate exudation from roots through the involvement of ALMT (Al-activated malate transporter) channels. The underlying Al tolerance mechanisms of stylo (Stylosanthes guianensis), an important tropical legume that exhibits superior Al tolerance, remain largely unknown, and knowledge of the potential contribution of ALMT genes to Al detoxification in stylo is limited. In this study, stylo root growth was inhibited by Al toxicity, accompanied by increases in malate and citrate exudation from roots. A total of 11 ALMT genes were subsequently identified in the stylo genome and named SgALMT1 to SgALMT11. Diverse responses to metal stresses were observed for these SgALMT genes in stylo roots. Among them, the expressions of 6 out of the 11 SgALMTs were upregulated by Al toxicity. SgALMT2, a root-specific and Al-activated gene, was selected for functional characterization. Subcellular localization analysis revealed that the SgALMT2 protein is localized to the plasma membrane. The function of SgALMT2 in mediating malate release was confirmed by analysis of the malate exudation rate from transgenic composite stylo plants overexpressing SgALMT2. Furthermore, overexpression of SgALMT2 led to increased root growth in transgenic stylo plants treated with Al through decreased Al accumulation in roots. Taken together, the results of this study suggest that malate secretion mediated by SgALMT2 contributes to the ability of stylo to cope with Al toxicity.
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Affiliation(s)
- Ye Miao
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Ministry of Agriculture and Rual Affairs/Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; National Key Laboratory for Tropical Crop Breeding, Sanya, 572024, China
| | - Xuan Hu
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Ministry of Agriculture and Rual Affairs/Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; National Key Laboratory for Tropical Crop Breeding, Sanya, 572024, China
| | - Linjie Wang
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Ministry of Agriculture and Rual Affairs/Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Rainer Schultze-Kraft
- Alliance of Bioversity International and International Center for Tropical Agriculture, Cali, 763537, Colombia
| | - Wenqiang Wang
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Ministry of Agriculture and Rual Affairs/Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.
| | - Zhijian Chen
- Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Ministry of Agriculture and Rual Affairs/Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; National Key Laboratory for Tropical Crop Breeding, Sanya, 572024, China.
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Du LD, Guan ZJ, Liu YH, Zhu HD, Sun Q, Hu DG, Sun CH. The BTB/TAZ domain-containing protein CmBT1-mediated CmANR1 ubiquitination negatively regulates root development in chrysanthemum. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024; 66:285-299. [PMID: 38314502 DOI: 10.1111/jipb.13619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 01/15/2024] [Indexed: 02/06/2024]
Abstract
Roots are fundamental for plants to adapt to variable environmental conditions. The development of a robust root system is orchestrated by numerous genetic determinants and, among them, the MADS-box gene ANR1 has garnered substantial attention. Prior research has demonstrated that, in chrysanthemum, CmANR1 positively regulates root system development. Nevertheless, the upstream regulators involved in the CmANR1-mediated regulation of root development remain unidentified. In this study, we successfully identified bric-a-brac, tramtrack and broad (BTB) and transcription adapter putative zinc finger (TAZ) domain protein CmBT1 as the interacting partner of CmANR1 through a yeast-two-hybrid (Y2H) screening library. Furthermore, we validated this physical interaction through bimolecular fluorescence complementation and pull-down assays. Functional assays revealed that CmBT1 exerted a negative influence on root development in chrysanthemum. In both in vitro and in vivo assays, it was evident that CmBT1 mediated the ubiquitination of CmANR1 through the ubiquitin/26S proteasome pathway. This ubiquitination subsequently led to the degradation of the CmANR1 protein and a reduction in the transcription of CmANR1-targeted gene CmPIN2, which was crucial for root development in chrysanthemum. Genetic analysis suggested that CmBT1 modulated root development, at least in part, by regulating the level of CmANR1 protein. Collectively, these findings shed new light on the regulatory role of CmBT1 in degrading CmANR1 through ubiquitination, thereby repressing the expression of its targeted gene and inhibiting root development in chrysanthemum.
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Affiliation(s)
- Lian-Da Du
- Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China
| | - Zhang-Ji Guan
- Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China
| | - Yan-Hong Liu
- Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China
| | - Hui-Dong Zhu
- Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China
| | - Quan Sun
- Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China
| | - Da-Gang Hu
- Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China
| | - Cui-Hui Sun
- Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, College of Horticulture Science and Engineering, Shandong Agricultural University, Taian, 271018, China
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9
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Kang Y, Qin H, Wang G, Lei B, Yang X, Zhong M. Selenium Nanoparticles Mitigate Cadmium Stress in Tomato through Enhanced Accumulation and Transport of Sulfate/Selenite and Polyamines. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:1473-1486. [PMID: 38214288 PMCID: PMC10811693 DOI: 10.1021/acs.jafc.3c07504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/25/2023] [Accepted: 12/28/2023] [Indexed: 01/13/2024]
Abstract
Accumulation of cadmium (Cd) ions in soil is an increasingly acute ecological problem in agriculture production. Selenium nanoparticles (SeNPs) can mediate Cd tolerance in plants; however, the underlying mechanisms remain unclear. Herein, we show that the foliar application of SeNPs improved the adaptive capacity of tomato plants to decrease Cd-induced damage. SeNPs induced more Cd in roots but not in shoots despite greater accumulation of selenium and sulfur in both tissues and high selenate influx. Additionally, SeNPs significantly increased thiol compounds, including glutathione, cysteine, and phytochelatins, contributing to enhanced Cd detoxification. Importantly, SeNPs induced the expression of sulfate transporters 1:3, S-adenosylmethionine 1 and polyamine transporter 3. Then, experiments with mutants of these genes showed that SeNP-reduced Cd stress largely relies on the levels and shoot-to-root transport of selenium/sulfur and polyamines. These findings highlight the potential of SeNPs to improve crop production and phytoremediation in heavy metal-contaminated soils.
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Affiliation(s)
- Yunyan Kang
- College
of Horticulture, South China Agricultural
University, Guangzhou 510642, P.R. China
| | - Hongyi Qin
- College
of Horticulture, South China Agricultural
University, Guangzhou 510642, P.R. China
| | - Guohu Wang
- College
of Horticulture, South China Agricultural
University, Guangzhou 510642, P.R. China
| | - Bingfu Lei
- Key
Laboratory for Biobased Materials and Energy of Ministry of Education,
Guangdong Provincial Engineering Technology Research Center for Optical
Agriculture, College of Materials and Energy, South China Agricultural University, Guangzhou 510642, P.R. China
| | - Xian Yang
- College
of Horticulture, South China Agricultural
University, Guangzhou 510642, P.R. China
| | - Min Zhong
- College
of Horticulture, South China Agricultural
University, Guangzhou 510642, P.R. China
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10
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Chen C, Zhang Y, Liu Y, Cui J, He X, Wu Y, Yue L, Zhang J, Ding M, Yi Z, Fang X. Joint QTL Mapping and Transcriptome Sequencing Analysis Reveal Candidate Seed-Shattering-Related Genes in Common Buckwheat. Int J Mol Sci 2023; 24:10013. [PMID: 37373161 DOI: 10.3390/ijms241210013] [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: 05/03/2023] [Revised: 06/01/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
Common buckwheat (Fagopyrum esculentum M.) is an important traditional miscellaneous grain crop. However, seed-shattering is a significant problem in common buckwheat. To investigate the genetic architecture and genetic regulation of seed-shattering in common buckwheat, we constructed a genetic linkage map using the F2 population of Gr (green-flower mutant and shattering resistance) and UD (white flower and susceptible to shattering), which included eight linkage groups with 174 loci, and detected seven QTLs of pedicel strength. RNA-seq analysis of pedicel in two parents revealed 214 differentially expressed genes DEGs that play roles in phenylpropanoid biosynthesis, vitamin B6 metabolism, and flavonoid biosynthesis. Weighted gene co-expression network analysis (WGCNA) was performed and screened out 19 core hub genes. Untargeted GC-MS analysis detected 138 different metabolites and conjoint analysis screened out 11 DEGs, which were significantly associated with differential metabolites. Furthermore, we identified 43 genes in the QTLs, of which six genes had high expression levels in the pedicel of common buckwheat. Finally, 21 candidate genes were screened out based on the above analysis and gene function. Our results provided additional knowledge for the identification and functions of causal candidate genes responsible for the variation in seed-shattering and would be an invaluable resource for the genetic dissection of common buckwheat resistance-shattering molecular breeding.
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Affiliation(s)
- Chuyi Chen
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China
| | - Yuke Zhang
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China
- Institute of Advanced Agricultural Sciences, Peking University, Weifang 261000, China
| | - Yang Liu
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China
| | - Jingbin Cui
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China
| | - Xingxing He
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China
| | - Yichao Wu
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China
| | - Linqing Yue
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China
| | - Jian Zhang
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China
| | - Mengqi Ding
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China
| | - Zelin Yi
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China
| | - Xiaomei Fang
- College of Agronomy and Biotechnology, Southwest University, Chongqing 400716, China
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