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Hu J, Wang J, Muhammad T, Yang T, Li N, Yang H, Yu Q, Wang B. Integrative Analysis of Metabolome and Transcriptome of Carotenoid Biosynthesis Reveals the Mechanism of Fruit Color Change in Tomato ( Solanum lycopersicum). Int J Mol Sci 2024; 25:6493. [PMID: 38928199 PMCID: PMC11204166 DOI: 10.3390/ijms25126493] [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: 05/06/2024] [Revised: 05/31/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Tomato fruit ripening is accompanied by carotenoid accumulation and color changes. To elucidate the regulatory mechanisms underlying carotenoid synthesis during fruit ripening, a combined transcriptomic and metabolomic analysis was conducted on red-fruited tomato (WP190) and orange-fruited tomato (ZH108). A total of twenty-nine (29) different carotenoid compounds were identified in tomato fruits at six different stages. The abundance of the majority of the carotenoids was enhanced significantly with fruit ripening, with higher levels of lycopene; (E/Z)-lycopene; and α-, β- and γ-carotenoids detected in the fruits of WP190 at 50 and 60 days post anthesis (DPA). Transcriptome analysis revealed that the fruits of two varieties exhibited the highest number of differentially expressed genes (DEGs) at 50 DPA, and a module of co-expressed genes related to the fruit carotenoid content was established by WGCNA. qRT-PCR analysis validated the transcriptome result with a significantly elevated transcript level of lycopene biosynthesis genes (including SlPSY2, SlZCIS, SlPDS, SlZDS and SlCRTSO2) observed in WP190 at 50 DPA in comparison to ZH108. In addition, during the ripening process, the expression of ethylene biosynthesis (SlACSs and SlACOs) and signaling (SlEIN3 and SlERF1) genes was also increased, and these mechanisms may regulate carotenoid accumulation and fruit ripening in tomato. Differential expression of several key genes in the fruit of two tomato varieties at different stages regulates the accumulation of carotenoids and leads to differences in color between the two varieties of tomato. The results of this study provide a comprehensive understanding of carotenoid accumulation and ethylene biosynthesis and signal transduction pathway regulatory mechanisms during tomato fruit development.
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Affiliation(s)
- Jiahui Hu
- College of Horticulture, Xinjiang Agricultural University, Urumqi 830052, China
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830000, China; (J.W.)
| | - Juan Wang
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830000, China; (J.W.)
| | - Tayeb Muhammad
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830000, China; (J.W.)
| | - Tao Yang
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830000, China; (J.W.)
| | - Ning Li
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830000, China; (J.W.)
| | - Haitao Yang
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830000, China; (J.W.)
| | - Qinghui Yu
- College of Horticulture, Xinjiang Agricultural University, Urumqi 830052, China
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830000, China; (J.W.)
| | - Baike Wang
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticulture Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830000, China; (J.W.)
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Wang Z, Wei X, Cui X, Wang J, Wang Y, Sun M, Zhao P, Yang B, Wang Q, Jiang YQ. The transcription factor WRKY22 modulates ethylene biosynthesis and root development through transactivating the transcription of ACS5 and ACO5 in Arabidopsis. PHYSIOLOGIA PLANTARUM 2024; 176:e14371. [PMID: 38837414 DOI: 10.1111/ppl.14371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 05/15/2024] [Indexed: 06/07/2024]
Abstract
The WRKY transcription factor (TF) genes form a large family in higher plants, with 72 members in Arabidopsis (Arabidopsis thaliana). The gaseous phytohormone ethylene (ET) regulates multiple physiological processes in plants. It is known that 1-aminocyclopropane-1-carboxylic acid (ACC) synthases (ACSs, EC 4.4.1.14) limit the enzymatic reaction rate of ethylene synthesis. However, whether WRKY TFs regulate the expression of ACSs and/or ACC oxidases (ACOs, EC 1.14.17.4) remains largely elusive. Here, we demonstrated that Arabidopsis WRKY22 positively regulated the expression of a few ACS and ACO genes, thus promoting ethylene production. Inducible overexpression of WRKY22 caused shorter hypocotyls without ACC treatment. A qRT-PCR screening demonstrated that overexpression of WRKY22 activates the expression of several ACS and ACO genes. The promoter regions of ACS5, ACS11, and ACO5 were also activated by WRKY22, which was revealed by a dual luciferase reporter assay. A follow-up chromatin immunoprecipitation coupled with quantitative PCR (ChIP-qPCR) and electrophoretic mobility shift assay (EMSA) showed that the promoter regions of ACS5 and ACO5 could be bound by WRKY22 directly. Moreover, wrky22 mutants had longer primary roots and more lateral roots than wild type, while WRKY22-overexpressing lines showed the opposite phenotype. In conclusion, this study revealed that WRKY22 acts as a novel TF activating, at least, the expression of ACS5 and ACO5 to increase ethylene synthesis and modulate root development.
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Affiliation(s)
- Zhaoqiang Wang
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, China
| | - Xiangyan Wei
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, China
| | - Xing Cui
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, China
| | - Jing Wang
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, China
| | - Yiqiao Wang
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, China
| | - Mengting Sun
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, China
| | - Peiyu Zhao
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, China
| | - Bo Yang
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, China
| | - Qiannan Wang
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, China
| | - Yuan-Qing Jiang
- State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi, China
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Chen J, Jiang S, Yang G, Li L, Li J, Yang F. The MYB transcription factor SmMYB113 directly regulates ethylene-dependent flower abscission in eggplant. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 209:108544. [PMID: 38520965 DOI: 10.1016/j.plaphy.2024.108544] [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: 11/27/2023] [Revised: 03/17/2024] [Accepted: 03/18/2024] [Indexed: 03/25/2024]
Abstract
Flower abscission is an important developmental process that can significantly reduce the yield of horticultural plants. We previously reported that SmMYB113 is a key transcription factor promoting anthocyanin biosynthesis and improve fruit quality. However, the overexpression of SmMYB113 in eggplant increased flower drop rate and reduced fruit yield. Here, we elucidate the regulatory mechanisms of SmMYB113 on flower abscission in eggplant. RNA-seq analysis indicated that the regulation of flower abscission by SmMYB113 was associated with altered expression of genes related to ethylene biosynthesis and signal transduction, including ethylene biosynthetic genes SmACS1, SmACS8 and SmACO4. Then, the ethylene content in flowers and the function of ethephon (ETH, which promotes fruit ripening) and 1-Methylcyclopropene (1-MCP, which acts as an ethylene perception inhibitor) were analyzed, which revealed that SmMYB113 directly regulates ethylene-dependent flower abscission. Yeast one-hybrid and dual-luciferase assays revealed that SmMYB113 could directly bind to the promoters of SmACS1, SmACS8, and SmACO4 to activate their expression. Through construction of a yeast two-hybrid (Y2H) screening library, the protein SmERF38 was found to interact with SmMYB113, and verified by Y2H, bimolecular fluorescence complementation (BiFC), and luciferase complementation assay. Furthermore, dual-luciferase assays showed that SmERF38 enhanced the role of SmMYB113 on the promoters of SmACS1. Our results provided new insight into the molecular mechanism of flower abscission in eggplant.
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Affiliation(s)
- Jing Chen
- College of Horticulture Science and Engineering, Shandong Agricultural University, Shandong, 271018, China
| | - Senlin Jiang
- College of Horticulture Science and Engineering, Shandong Agricultural University, Shandong, 271018, China
| | - Guobin Yang
- College of Horticulture Science and Engineering, Shandong Agricultural University, Shandong, 271018, China
| | - Lujun Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, Shandong, 271018, China
| | - Jing Li
- College of Horticulture Science and Engineering, Shandong Agricultural University, Shandong, 271018, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Huanghuai Region), Ministry of Agriculture and Rural Affairs, Shandong, 271018, China; Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Tai'an, Shandong, 271018, China.
| | - Fengjuan Yang
- College of Horticulture Science and Engineering, Shandong Agricultural University, Shandong, 271018, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Huanghuai Region), Ministry of Agriculture and Rural Affairs, Shandong, 271018, China; Shandong Collaborative Innovation Center for Fruit and Vegetable Production with High Quality and Efficiency, Tai'an, Shandong, 271018, China.
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Zhang J, Hu Z, Xie Q, Dong T, Li J, Chen G. Two SEPALLATA MADS-Box Genes, SlMBP21 and SlMADS1, Have Cooperative Functions Required for Sepal Development in Tomato. Int J Mol Sci 2024; 25:2489. [PMID: 38473738 DOI: 10.3390/ijms25052489] [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: 01/09/2024] [Revised: 02/08/2024] [Accepted: 02/15/2024] [Indexed: 03/14/2024] Open
Abstract
MADS-box transcription factors have crucial functions in numerous physiological and biochemical processes during plant growth and development. Previous studies have reported that two MADS-box genes, SlMBP21 and SlMADS1, play important regulatory roles in the sepal development of tomato, respectively. However, the functional relationships between these two genes are still unknown. In order to investigate this, we simultaneously studied these two genes in tomato. Phylogenetic analysis showed that they were classified into the same branch of the SEPALLATA (SEP) clade. qRT-PCR displayed that both SlMBP21 and SlMADS1 transcripts are preferentially accumulated in sepals, and are increased with flower development. During sepal development, SlMBP21 is increased but SlMADS1 is decreased. Using the RNAi, tomato plants with reduced SlMBP21 mRNA generated enlarged and fused sepals, while simultaneous inhibition of SlMBP21 and SlMADS1 led to larger (longer and wider) and fused sepals than that in SlMBP21-RNAi lines. qRT-PCR results exhibited that the transcripts of genes relating to sepal development, ethylene, auxin and cell expansion were dramatically changed in SlMBP21-RNAi sepals, especially in SlMBP21-SlMADS1-RNAi sepals. Yeast two-hybrid assay displayed that SlMBP21 can interact with SlMBP21, SlAP2a, TAGL1 and RIN, and SlMADS1 can interact with SlAP2a and RIN, respectively. In conclusion, SlMBP21 and SlMADS1 cooperatively regulate sepal development in tomato by impacting the expression or activities of other related regulators or via interactions with other regulatory proteins.
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Affiliation(s)
- Jianling Zhang
- Laboratory of Plant Germplasm Innovation and Utilization, School of Life Sciences, Liaocheng University, Liaocheng 252000, China
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing 400030, China
| | - Zongli Hu
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing 400030, China
| | - Qiaoli Xie
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing 400030, China
| | - Tingting Dong
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing 400030, China
- Institute of Integrative Plant Biology, School of Life Science, Jiangsu Normal University, Xuzhou 221116, China
| | - Jing Li
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing 400030, China
| | - Guoping Chen
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing 400030, China
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Khan S, Alvi AF, Saify S, Iqbal N, Khan NA. The Ethylene Biosynthetic Enzymes, 1-Aminocyclopropane-1-Carboxylate (ACC) Synthase (ACS) and ACC Oxidase (ACO): The Less Explored Players in Abiotic Stress Tolerance. Biomolecules 2024; 14:90. [PMID: 38254690 PMCID: PMC10813531 DOI: 10.3390/biom14010090] [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: 11/14/2023] [Revised: 01/06/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Ethylene is an essential plant hormone, critical in various physiological processes. These processes include seed germination, leaf senescence, fruit ripening, and the plant's response to environmental stressors. Ethylene biosynthesis is tightly regulated by two key enzymes, namely 1-aminocyclopropane-1-carboxylate synthase (ACS) and 1-aminocyclopropane-1-carboxylate oxidase (ACO). Initially, the prevailing hypothesis suggested that ACS is the limiting factor in the ethylene biosynthesis pathway. Nevertheless, accumulating evidence from various studies has demonstrated that ACO, under specific circumstances, acts as the rate-limiting enzyme in ethylene production. Under normal developmental processes, ACS and ACO collaborate to maintain balanced ethylene production, ensuring proper plant growth and physiology. However, under abiotic stress conditions, such as drought, salinity, extreme temperatures, or pathogen attack, the regulation of ethylene biosynthesis becomes critical for plants' survival. This review highlights the structural characteristics and examines the transcriptional, post-transcriptional, and post-translational regulation of ACS and ACO and their role under abiotic stress conditions. Reviews on the role of ethylene signaling in abiotic stress adaptation are available. However, a review delineating the role of ACS and ACO in abiotic stress acclimation is unavailable. Exploring how particular ACS and ACO isoforms contribute to a specific plant's response to various abiotic stresses and understanding how they are regulated can guide the development of focused strategies. These strategies aim to enhance a plant's ability to cope with environmental challenges more effectively.
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Affiliation(s)
- Sheen Khan
- Plant Physiology and Biochemistry Laboratory, Department of Botany, Aligarh Muslim University, Aligarh 202002, India; (S.K.); (S.S.)
| | - Ameena Fatima Alvi
- Plant Physiology and Biochemistry Laboratory, Department of Botany, Aligarh Muslim University, Aligarh 202002, India; (S.K.); (S.S.)
| | - Sadaf Saify
- Plant Physiology and Biochemistry Laboratory, Department of Botany, Aligarh Muslim University, Aligarh 202002, India; (S.K.); (S.S.)
| | - Noushina Iqbal
- Department of Botany, Jamia Hamdard, New Delhi 110062, India;
| | - Nafees A. Khan
- Plant Physiology and Biochemistry Laboratory, Department of Botany, Aligarh Muslim University, Aligarh 202002, India; (S.K.); (S.S.)
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You S, Wu Y, Li W, Liu X, Tang Q, Huang F, Li Y, Wang H, Liu M, Zhang Y. SlERF.G3-Like mediates a hierarchical transcriptional cascade to regulate ripening and metabolic changes in tomato fruit. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:165-180. [PMID: 37750661 PMCID: PMC10754011 DOI: 10.1111/pbi.14177] [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: 03/14/2023] [Revised: 07/25/2023] [Accepted: 09/02/2023] [Indexed: 09/27/2023]
Abstract
The tomato ripening process contains complex changes, including ethylene signalling, cell wall softening and numerous metabolic changes. So far, much is still unknown about how tomato plants precisely coordinate fruit maturation and metabolic regulation. In this paper, the ERF family transcription factor SlERF.G3-Like in tomato was found to be involved in the regulation of ethylene synthesis, cell wall degradation and the flavonoid pathway. We show that the master ripening regulator SlRIN was found to directly bind to the promoter region of SlERF.G3-Like to activate its expression. In addition, we managed to increase the production of resveratrol derivatives from ~1.44 mg/g DW in E8:VvStSy line to ~2.43 mg/g DW by crossing p35S: SlERF.G3-Like with the E8:VvStSy line. Our data provide direct evidence that SlERF.G3-Like, a hierarchical transcriptional factor, can directly manipulate pathways in which tomatoes can coordinate fruit maturation and metabolic changes. We also attest that SlERF.G3-Like can be used as an effective tool for phenylpropanoid metabolic engineering.
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Affiliation(s)
- Shengjie You
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Yu Wu
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Wen Li
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Xiaofeng Liu
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Qinlan Tang
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Fengkun Huang
- Sanya Nanfan Research Institute of Hainan UniversityHainan Yazhou Bay Seed LaboratorySanyaChina
- College of Tropical CropsHainan UniversityHaikouChina
| | - Yan Li
- Sanya Nanfan Research Institute of Hainan UniversityHainan Yazhou Bay Seed LaboratorySanyaChina
- College of Tropical CropsHainan UniversityHaikouChina
| | - Hsihua Wang
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Mingchun Liu
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
| | - Yang Zhang
- Key Laboratory of Bio‐resource and Eco‐environment of Ministry of Education, College of Life SciencesSichuan UniversityChengduSichuanPeople's Republic of China
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Wei W, Yang YY, Wu CJ, Kuang JF, Chen JY, Lu WJ, Shan W. MaMADS1-MaNAC083 transcriptional regulatory cascade regulates ethylene biosynthesis during banana fruit ripening. HORTICULTURE RESEARCH 2023; 10:uhad177. [PMID: 37868621 PMCID: PMC10585711 DOI: 10.1093/hr/uhad177] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 08/25/2023] [Indexed: 10/24/2023]
Abstract
The hormone ethylene is crucial in the regulation of ripening in climacteric fruit, such as bananas. The transcriptional regulation of ethylene biosynthesis throughout banana fruit ripening has received much study, but the cascaded transcriptional machinery of upstream transcriptional regulators implicated in the ethylene biosynthesis pathway is still poorly understood. Here we report that ethylene biosynthesis genes, including MaACS1, MaACO1, MaACO4, MaACO5, and MaACO8, were upregulated in ripening bananas. NAC (NAM, ATAF, CUC) transcription factor, MaNAC083, a ripening and ethylene-inhibited gene, was discovered as a potential binding protein to the MaACS1 promoter by yeast one-hybrid screening. Further in vitro and in vivo experiments indicated that MaNAC083 bound directly to promoters of the five ethylene biosynthesis genes, thereby transcriptionally repressing their expression, which was further verified by transient overexpression experiments, where ethylene production was inhibited through MaNAC083-modulated transcriptional repression of ethylene biosynthesis genes in banana fruits. Strikingly, MaMADS1, a ripening-induced MADS (MCM1, AGAMOUS, DEFICIENS, SRF4) transcription factor, was found to directly repress the expression of MaNAC083, inhibiting trans-repression of MaNAC083 to ethylene biosynthesis genes, thereby attenuating MaNAC083-repressed ethylene production in bananas. These findings collectively illustrated the mechanistic basis of a MaMADS1-MaNAC083-MaACS1/MaACOs regulatory cascade controlling ethylene biosynthesis during banana fruit ripening. These findings increase our knowledge of the transcriptional regulatory mechanisms of ethylene biosynthesis at the transcriptional level and are expected to help develop molecular approaches to control ripening and improve fruit storability.
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Affiliation(s)
- Wei Wei
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Ying-ying Yang
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Chao-jie Wu
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Jian-fei Kuang
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Jian-ye Chen
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Wang-jin Lu
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
| | - Wei Shan
- Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou 510642, China
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Sharma M, Negi S, Kumar P, Srivastava DK, Choudhary MK, Irfan M. Fruit ripening under heat stress: The intriguing role of ethylene-mediated signaling. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 335:111820. [PMID: 37549738 DOI: 10.1016/j.plantsci.2023.111820] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 08/01/2023] [Accepted: 08/05/2023] [Indexed: 08/09/2023]
Abstract
Crop production is significantly influenced by climate, and even minor climate changes can have a substantial impact on crop yields. Rising temperature due to climate change can lead to heat stress (HS) in plants, which not only hinders plant growth and development but also result in significant losses in crop yields. To cope with the different stresses including HS, plants have evolved a variety of adaptive mechanisms. In response to these stresses, phytohormones play a crucial role by generating endogenous signals that regulate the plant's defensive response. Among these, Ethylene (ET), a key phytohormone, stands out as a major regulator of stress responses in plants and regulates many plant traits, which are critical for crop productivity and nutritional quality. ET is also known as a ripening hormone for decades in climacteric fruit and many studies are available deciphering the function of different ET biosynthesis and signaling components in the ripening process. Recent studies suggest that HS significantly affects fruit quality traits and perturbs fruit ripening by altering the regulation of many ethylene biosynthesis and signaling genes resulting in substantial loss of fruit yield, quality, and postharvest stability. Despite the significant progress in this field in recent years the interplay between ET, ripening, and HS is elusive. In this review, we summarized the recent advances and current understanding of ET in regulating the ripening process under HS and explored their crosstalk at physiological and molecular levels to shed light on intricate relationships.
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Affiliation(s)
- Megha Sharma
- Department of Biotechnology, Dr. Y.S. Parmar University of Horticulture and Forestry, Solan, Himachal Pradesh, India
| | - Shivanti Negi
- Department of Biotechnology, Dr. Y.S. Parmar University of Horticulture and Forestry, Solan, Himachal Pradesh, India
| | - Pankaj Kumar
- Department of Biotechnology, Dr. Y.S. Parmar University of Horticulture and Forestry, Solan, Himachal Pradesh, India.
| | - Dinesh Kumar Srivastava
- Department of Biotechnology, Dr. Y.S. Parmar University of Horticulture and Forestry, Solan, Himachal Pradesh, India
| | - Mani Kant Choudhary
- Department of Biology, University of Arkansas at Little Rock, Little Rock, AR 72204, USA
| | - Mohammad Irfan
- Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, USA.
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Ming Y, Jiang L, Ji D. Epigenetic regulation in tomato fruit ripening. FRONTIERS IN PLANT SCIENCE 2023; 14:1269090. [PMID: 37780524 PMCID: PMC10539587 DOI: 10.3389/fpls.2023.1269090] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 08/31/2023] [Indexed: 10/03/2023]
Abstract
Fruit ripening is a crucial stage in quality development, influenced by a diverse array of internal and external factors. Among these factors, epigenetic regulation holds significant importance and has garnered substantial research attention in recent years. Here, this review aims to discuss the breakthrough in epigenetic regulation of tomato (Solanum lycopersicum) fruit ripening, including DNA methylation, N6-Methyladenosine mRNA modification, histone demethylation/deacetylation, and non-coding RNA. Through this brief review, we seek to enhance our understanding of the regulatory mechanisms governing tomato fruit ripening, while providing fresh insights for the precise modulation of these mechanisms.
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Affiliation(s)
| | - Libo Jiang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, China
| | - Dongchao Ji
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, China
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Zhu K, Chen H, Mei X, Lu S, Xie H, Liu J, Chai L, Xu Q, Wurtzel ET, Ye J, Deng X. Transcription factor CsMADS3 coordinately regulates chlorophyll and carotenoid pools in Citrus hesperidium. PLANT PHYSIOLOGY 2023; 193:519-536. [PMID: 37224514 DOI: 10.1093/plphys/kiad300] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 05/04/2023] [Indexed: 05/26/2023]
Abstract
Citrus, 1 of the largest fruit crops with global economic and nutritional importance, contains fruit known as hesperidium with unique morphological types. Citrus fruit ripening is accompanied by chlorophyll degradation and carotenoid biosynthesis, which are indispensably linked to color formation and the external appearance of citrus fruits. However, the transcriptional coordination of these metabolites during citrus fruit ripening remains unknown. Here, we identified the MADS-box transcription factor CsMADS3 in Citrus hesperidium that coordinates chlorophyll and carotenoid pools during fruit ripening. CsMADS3 is a nucleus-localized transcriptional activator, and its expression is induced during fruit development and coloration. Overexpression of CsMADS3 in citrus calli, tomato (Solanum lycopersicum), and citrus fruits enhanced carotenoid biosynthesis and upregulated carotenogenic genes while accelerating chlorophyll degradation and upregulating chlorophyll degradation genes. Conversely, the interference of CsMADS3 expression in citrus calli and fruits inhibited carotenoid biosynthesis and chlorophyll degradation and downregulated the transcription of related genes. Further assays confirmed that CsMADS3 directly binds and activates the promoters of phytoene synthase 1 (CsPSY1) and chromoplast-specific lycopene β-cyclase (CsLCYb2), 2 key genes in the carotenoid biosynthetic pathway, and STAY-GREEN (CsSGR), a critical chlorophyll degradation gene, which explained the expression alterations of CsPSY1, CsLCYb2, and CsSGR in the above transgenic lines. These findings reveal the transcriptional coordination of chlorophyll and carotenoid pools in the unique hesperidium of Citrus and may contribute to citrus crop improvement.
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Affiliation(s)
- Kaijie Zhu
- National Key Lab for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Hubei Hongshan Laboratory, Wuhan, Hubei 430070, China
| | - Hongyan Chen
- National Key Lab for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Hubei Hongshan Laboratory, Wuhan, Hubei 430070, China
| | - Xuehan Mei
- National Key Lab for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Suwen Lu
- National Key Lab for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Heping Xie
- The Experimental Station of Loose-skin Mandarins in Yichang, Agricultural Technical Service Center of Yiling District, Yichang, Hubei 443100, China
| | - Junwei Liu
- National Key Lab for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Lijun Chai
- National Key Lab for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Qiang Xu
- National Key Lab for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Eleanore T Wurtzel
- Department of Biological Sciences, Lehman College, The City University of New York, Bronx, NY 10468, USA
- The Graduate Center, The City University of New York, New York, NY 10016-16 4309, USA
| | - Junli Ye
- National Key Lab for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Xiuxin Deng
- National Key Lab for Germplasm Innovation & Utilization of Horticultural Crops, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Hubei Hongshan Laboratory, Wuhan, Hubei 430070, China
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11
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Ren S, Yuan Y, Wang H, Zhang Y. G2-LIKE CAROTENOID REGULATOR (SlGCR) is a positive regulator of lutein biosynthesis in tomato. ABIOTECH 2022; 3:267-280. [PMID: 36533268 PMCID: PMC9755792 DOI: 10.1007/s42994-022-00088-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 11/17/2022] [Indexed: 11/30/2022]
Abstract
Lutein is an oxygen-containing carotenoid synthesized in plant chloroplasts and chromoplasts. It plays an indispensable role in promoting plant growth and maintaining eye health in humans. The rate-limiting step of lutein biosynthesis is catalyzed by the lycopene ε-cyclase enzyme (LCYE). Although great progress has been made in the identification of transcription factors involved in the lutein biosynthetic pathway, many systematic molecular mechanisms remain to be elucidated. Here, using co-expression analysis, we identified a gene, G2-LIKE CAROTENOID REGULATOR (SlGCR), encoding a GARP G2-like transcription factor, as the potential regulator of SlLCYE in tomato. Silencing of SlGCR reduced the expression of carotenoid biosynthetic genes and the accumulation of carotenoids in tomato leaves. By contrast, overexpression of SlGCR in tomato fruit significantly increased the expression of relevant genes and enhanced the accumulation of carotenoids. SlGCR can directly bind to the SlLCYE promoter and activate its expression. In addition, we also discovered that expression of SlGCR was negatively regulated by the master regulator SlRIN, thereby inhibiting lutein synthesis during tomato fruit ripening. Taken together, we identified SlGCR as a novel regulator involved in tomato lutein biosynthesis, elucidated the regulatory mechanism, and provided a potential tool for tomato lutein metabolic engineering. Supplementary Information The online version contains supplementary material available at 10.1007/s42994-022-00088-z.
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Affiliation(s)
- Siyan Ren
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064 China
| | - Yong Yuan
- Sanya Institute of China Agricultural University, Sanya, 572025 China.,Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, College of Horticulture, China Agricultural University, Beijing, 100193 China
| | - Hsihua Wang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064 China
| | - Yang Zhang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064 China
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12
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Gambhir P, Singh V, Parida A, Raghuvanshi U, Kumar R, Sharma AK. Ethylene response factor ERF.D7 activates auxin response factor 2 paralogs to regulate tomato fruit ripening. PLANT PHYSIOLOGY 2022; 190:2775-2796. [PMID: 36130295 PMCID: PMC9706452 DOI: 10.1093/plphys/kiac441] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
Despite the obligatory role of ethylene in climacteric fruit ripening and the identification of 77 ethylene response factors (ERFs) in the tomato (Solanum lycopersicum) genome, the role of few ERFs has been validated in the ripening process. Here, using a comprehensive morpho-physiological, molecular, and biochemical approach, we demonstrate the regulatory role of ERF D7 (SlERF.D7) in tomato fruit ripening. SlERF.D7 expression positively responded to exogenous ethylene and auxin treatments, most likely in a ripening inhibitor-independent manner. SlERF.D7 overexpression (OE) promoted ripening, and its silencing had the opposite effect. Alterations in its expression modulated ethylene production, pigment accumulation, and fruit firmness. Consistently, genes involved in ethylene biosynthesis and signaling, lycopene biosynthesis, and cell wall loosening were upregulated in the OE lines and downregulated in RNAi lines. These transgenic lines also accumulated altered levels of indole-3-acetic acid at late-breaker stages. A positive association between auxin response factor 2 (ARF2) paralog's transcripts and SlERF.D7 mRNA levels and that SlARF2A and SlARF2B are direct targets of SlERF.D7 underpinned the perturbed auxin-ethylene crosstalk for the altered ripening program observed in the transgenic fruits. Overall, this study uncovers that SlERF.D7 positively regulates SlARF2A/B abundance to amalgamate auxin and ethylene signaling pathways for controlling tomato fruit ripening.
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Affiliation(s)
- Priya Gambhir
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi 110021, India
| | - Vijendra Singh
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi 110021, India
| | - Adwaita Parida
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi 110021, India
| | - Utkarsh Raghuvanshi
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi 110021, India
| | - Rahul Kumar
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad 500046, India
| | - Arun Kumar Sharma
- Department of Plant Molecular Biology, University of Delhi South Campus, New Delhi 110021, India
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13
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Tang Y, Wang L, Qu Z, Huang C, Zhao T, Li Y, Zhang C. BSISTER transcription factors directly binds to the promoter of IAA19 and IAA29 genes to up-regulate gene expression and promote the root development. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 321:111324. [PMID: 35696924 DOI: 10.1016/j.plantsci.2022.111324] [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: 03/10/2022] [Revised: 04/24/2022] [Accepted: 05/11/2022] [Indexed: 06/15/2023]
Abstract
Roots play an important role in the growth and development of plants and auxin participates in regulating plant root development. Some studies have shown that BS (BSISTER) gene (the closest gene of class B gene) is involved in plant root development, but whether BS regulates root development via auxin signaling still not clear. To explore VviBS1 and VviBS2 roles in root development, VviBS1 and VviBS2 were overexpressedin Arabidopsis tt16 mutant and we found that they could restore the phenotype of shorter PR (primary roots) and high density of LR (lateral root) of tt16 compared with the wild type Ws Arabidopsis seedlings. However, the addition of exogenous NAA (naphthalene acetic acid) could not significantly promote the PR length of tt16 Arabidopsis, and the auxin signal transduction of tt16 may be blocked. The expression levels of auxin signal transduction pathway genes in Ws, tt16, p35s:VviBS1 in tt16 and p35s:VviBS2 in tt16 seedlings were detected. It was found that the expression of AtARF2, AtARF12, AtARF14, AtARF15, AtARF20, AtGH3, AtGH3-2 and AtSAUR51 genes in tt16 seedlings was higher than that in Ws, while the expression of AtIAA19 and AtIAA29 in Ws seedlings was higher than that of tt16. More importantly, BS may up regulate AtIAA19 and AtIAA29 expression directly by binding to their promoter. In addition, VviBS1 and VviBS2 also affect seed germination and may regulate leaf yellowing by regulating ethylene synthase. Therefore, our findings reveal a molecular mechanism that BS may modulate root system development via Aux/IAA-based auxin signaling, and provide insight into the BS function in regulation of leaf yellowing.
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Affiliation(s)
- Yujin Tang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling 712100, Shaanxi, China.
| | - Ling Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling 712100, Shaanxi, China.
| | - Ziyang Qu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling 712100, Shaanxi, China.
| | - Congbo Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling 712100, Shaanxi, China.
| | - Ting Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling 712100, Shaanxi, China.
| | - Yan Li
- College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Chaohong Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China; Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (Northwest Region), Ministry of Agriculture, Yangling 712100, Shaanxi, China.
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14
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Jia M, Li X, Wang W, Li T, Dai Z, Chen Y, Zhang K, Zhu H, Mao W, Feng Q, Liu L, Yan J, Zhong S, Li B, Jia W. SnRK2 subfamily I protein kinases regulate ethylene biosynthesis by phosphorylating HB transcription factors to induce ACO1 expression in apple. THE NEW PHYTOLOGIST 2022; 234:1262-1277. [PMID: 35182082 PMCID: PMC9314909 DOI: 10.1111/nph.18040] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 02/09/2022] [Indexed: 05/20/2023]
Abstract
Ethylene (ETH) controls climacteric fruit ripening and can be triggered by osmotic stress. However, the mechanism regulating ETH biosynthesis during fruit ripening and under osmotic stress is largely unknown in apple (Malus domestica). Here, we explored the roles of SnRK2 protein kinases in ETH biosynthesis related to fruit ripening and osmoregulation. We identified the substrates of MdSnRK2-I using phosphorylation analysis techniques. Finally, we identified the MdSnRK2-I-mediated signaling pathway for ETH biosynthesis related to fruit ripening and osmoregulation. The activity of two MdSnRK2-I members, MdSnRK2.4 and MdSnRK2.9, was significantly upregulated during ripening or following mannitol treatment. Overexpression of MdSnRK2-I increased ETH biosynthesis under normal and osmotic conditions in apple fruit. MdSnRK2-I phosphorylated the transcription factors MdHB1 and MdHB2 to enhance their protein stability and transcriptional activity on MdACO1. MdSnRK2-I also interacted with MdACS1 and increased its protein stability through two phosphorylation sites. The increased MdACO1 expression and MdACS1 protein stability resulted in higher ETH production in apple fruit. In addition, heterologous expression of MdSnRK2-I or manipulation of SlSnRK2-I expression in tomato (Solanum lycopersicum) fruit altered fruit ripening and ETH biosynthesis. We established that MdSnRK2-I functions in fruit ripening and osmoregulation, and identified the MdSnRK2-I-mediated signaling pathway controlling ETH biosynthesis.
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Affiliation(s)
- Meiru Jia
- State Key Laboratory of AgrobiotechnologyChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Xingliang Li
- State Key Laboratory of AgrobiotechnologyChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Wei Wang
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Tianyu Li
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Zhengrong Dai
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Yating Chen
- State Key Laboratory of AgrobiotechnologyChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Kaikai Zhang
- State Key Laboratory of AgrobiotechnologyChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Haocheng Zhu
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Wenwen Mao
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Qianqian Feng
- State Key Laboratory of AgrobiotechnologyChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Liping Liu
- State Key Laboratory of AgrobiotechnologyChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Jiaqi Yan
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Silin Zhong
- School of Life SciencesState Key Laboratory of AgrobiotechnologyChinese University of Hong KongEG12 Science Centre EastHong Kong999077China
| | - Bingbing Li
- State Key Laboratory of AgrobiotechnologyChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
| | - Wensuo Jia
- Department of PomologyCollege of HorticultureChina Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China
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15
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Yuan Y, Ren S, Liu X, Su L, Wu Y, Zhang W, Li Y, Jiang Y, Wang H, Fu R, Bouzayen M, Liu M, Zhang Y. SlWRKY35 positively regulates carotenoid biosynthesis by activating the MEP pathway in tomato fruit. THE NEW PHYTOLOGIST 2022; 234:164-178. [PMID: 35048386 DOI: 10.1111/nph.17977] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
Carotenoids are vital phytonutrients widely recognised for their health benefits. Therefore, it is vital to thoroughly investigate the metabolic regulatory network underlying carotenoid biosynthesis and accumulation to open new leads towards improving their contents in vegetables and crops. The outcome of our study defines SlWRKY35 as a positive regulator of carotenoid biosynthesis in tomato. SlWRKY35 can directly activate the expression of the 1-deoxy-d-xylulose 5-phosphate synthase (SlDXS1) gene to reprogramme metabolism towards the 2-C-methyl-d-erythritol 4-phosphate (MEP) pathway, leading to enhanced carotenoid accumulation. We also show that the master regulator SlRIN directly regulates the expression of SlWRKY35 during tomato fruit ripening. Compared with the SlLCYE overexpression lines, coexpression of SlWRKY35 and SlLCYE can further enhance lutein production in transgenic tomato fruit, indicating that SlWRKY35 represents a potential target towards designing innovative metabolic engineering strategies for carotenoid derivatives. In addition to providing new insights into the metabolic regulatory network associated with tomato fruit ripening, our data define a new tool for improving fruit content in specific carotenoid compounds.
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Affiliation(s)
- Yong Yuan
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Siyan Ren
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Xiaofeng Liu
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Liyang Su
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Yu Wu
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Wen Zhang
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Yan Li
- Hainan Key Laboratory for Sustainable Utilisation of Tropical Bioresource, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 572208, China
| | - Yidan Jiang
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Hsihua Wang
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Rao Fu
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Mondher Bouzayen
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
- GBF, University of Toulouse, INRA, Castanet-Tolosan, 31320, France
| | - Mingchun Liu
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
| | - Yang Zhang
- Key Laboratory of Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China
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16
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Paudel L, Kerr S, Prentis P, Tanurdžić M, Papanicolaou A, Plett JM, Cazzonelli CI. Horticultural innovation by viral-induced gene regulation of carotenogenesis. HORTICULTURE RESEARCH 2022; 9:uhab008. [PMID: 35043183 PMCID: PMC8769041 DOI: 10.1093/hr/uhab008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 08/31/2021] [Accepted: 09/24/2021] [Indexed: 06/14/2023]
Abstract
Multipartite viral vectors provide a simple, inexpensive and effective biotechnological tool to transiently manipulate (i.e. reduce or increase) gene expression in planta and characterise the function of genetic traits. The development of virus-induced gene regulation (VIGR) systems usually involve the targeted silencing or overexpression of genes involved in pigment biosynthesis or degradation in plastids, thereby providing rapid visual assessment of success in establishing RNA- or DNA-based VIGR systems in planta. Carotenoids pigments provide plant tissues with an array of yellow, orange, and pinkish-red colours. VIGR-induced transient manipulation of carotenoid-related gene expression has advanced our understanding of carotenoid biosynthesis, regulation, accumulation and degradation, as well as plastid signalling processes. In this review, we describe mechanisms of VIGR, the importance of carotenoids as visual markers of technology development, and knowledge gained through manipulating carotenogenesis in model plants as well as horticultural crops not always amenable to transgenic approaches. We outline how VIGR can be utilised in plants to fast-track the characterisation of gene function(s), accelerate fruit tree breeding programs, edit genomes, and biofortify plant products enriched in carotenoid micronutrients for horticultural innovation.
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Affiliation(s)
- Lucky Paudel
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith NSW 2751, Australia
| | - Stephanie Kerr
- Centre for Agriculture and the Bioeconomy (CAB), Queensland University of Technology, 2 George Street, Brisbane City, QLD 4000, Australia
- School of Biology and Environmental Sciences, Faculty of Science,
Queensland University of Technology, 2 George Street, Brisbane, QLD 4000, Australia
| | - Peter Prentis
- Centre for Agriculture and the Bioeconomy (CAB), Queensland University of Technology, 2 George Street, Brisbane City, QLD 4000, Australia
- School of Biology and Environmental Sciences, Faculty of Science,
Queensland University of Technology, 2 George Street, Brisbane, QLD 4000, Australia
| | - Miloš Tanurdžić
- School of Biological Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Alexie Papanicolaou
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith NSW 2751, Australia
| | - Jonathan M Plett
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith NSW 2751, Australia
| | - Christopher I Cazzonelli
- Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith NSW 2751, Australia
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17
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Yao JL, Kang C, Gu C, Gleave AP. The Roles of Floral Organ Genes in Regulating Rosaceae Fruit Development. FRONTIERS IN PLANT SCIENCE 2022; 12:644424. [PMID: 35069608 PMCID: PMC8766977 DOI: 10.3389/fpls.2021.644424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 11/22/2021] [Indexed: 06/14/2023]
Abstract
The function of floral organ identity genes, APETALA1/2/3, PISTILLATA, AGAMOUS, and SEPALLATA1/2/3, in flower development is highly conserved across angiosperms. Emerging evidence shows that these genes also play important roles in the development of the fruit that originates from floral organs following pollination and fertilization. However, their roles in fruit development may vary significantly between species depending on the floral organ types contributing to the fruit tissues. Fruits of the Rosaceae family develop from different floral organ types depending on the species, for example, peach fruit flesh develops from carpellary tissues, whereas apple and strawberry fruit flesh develop from extra-carpellary tissues, the hypanthium and receptacle, respectively. In this review, we summarize recent advances in understanding floral organ gene function in Rosaceae fruit development and analyze the similarities and diversities within this family as well as between Rosaceae and the model plant species Arabidopsis and tomato. We conclude by suggesting future research opportunities using genomics resources to rapidly dissect gene function in this family of perennial plants.
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Affiliation(s)
- Jia-Long Yao
- The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
| | - Chunying Kang
- College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan, China
| | - Chao Gu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Andrew Peter Gleave
- The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
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18
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Kang J, Gong J, Zhang L, Gao Z, Xie Q, Hu Z, Chen G. A novel E6-like gene, E6-2, affects fruit ripening in tomato. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 313:111066. [PMID: 34763858 DOI: 10.1016/j.plantsci.2021.111066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 09/07/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
Tomato fruit ripening is a complicated and well-coordinated process with numerous metabolic changes resulted from endogenous hormone and genetic regulators. Although the regulation of MADS-box transcription factor (MADS-RIN) controlling fruit ripening has been widely reported, its mechanisms underlying need to be further improved. Here, we characterized a novel tomato E6-like gene, E6-2, whose transcripts showed a high accumulation in fruit ripening stages (Breaker, Breaker+4 and Breaker+7), but a low level was observed in Never ripe (Nr) and ripening inhibitor (rin) mutants. MADS-RIN directly activates the expression of E6-2 in vivo. Additionally, a remarkable reduction of E6-2 was observed in wild-type (WT) tomato fruits at the MG stage treated with 1-MCP. RNAi-mediated silencing of E6-2 resulted in delayed fruit ripening, reduced accumulation of the total carotenoid and lycopene, reduced content of ethylene production, and increased contents of the total pectin, cellulose, starch and soluble sugar. Moreover, the expression of carotenoid biosynthesis genes (PSY1, PDS and ZDS), ripening-related genes (CNR, PG and ERF4), ethylene biosynthesis genes (ACS2, ACO1 and ACO3), ethylene-responsive genes (E4 and E8) and cell wall metabolism genes (TBG4, PL, EXP1 and XTH5) were inhibited in E6-2 -RNAi lines. These results indicate that E6-2 plays an important role in regulating tomato fruit ripening targeted by RIN.
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Affiliation(s)
- Jing Kang
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China.
| | - Jun Gong
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China.
| | - Lincheng Zhang
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China.
| | - Zihan Gao
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China.
| | - Qiaoli Xie
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China.
| | - Zongli Hu
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China.
| | - Guoping Chen
- Laboratory of Molecular Biology of Tomato, Bioengineering College, Chongqing University, Chongqing, People's Republic of China.
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19
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Novel Translational and Phosphorylation Modification Regulation Mechanisms of Tomato ( Solanum lycopersicum) Fruit Ripening Revealed by Integrative Proteomics and Phosphoproteomics. Int J Mol Sci 2021; 22:ijms222111782. [PMID: 34769214 PMCID: PMC8584006 DOI: 10.3390/ijms222111782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/22/2021] [Accepted: 10/22/2021] [Indexed: 11/26/2022] Open
Abstract
The tomato is a research model for fruit-ripening, however, its fruit-ripening mechanism still needs more extensive and in-depth exploration. Here, using TMT and LC-MS, the proteome and phosphoproteome of AC++ (wild type) and rin (ripening-inhibitor) mutant fruits were studied to investigate the translation and post-translational regulation mechanisms of tomato fruit-ripening. A total of 6141 proteins and 4011 phosphorylation sites contained quantitative information. One-hundred proteins were identified in both omics’ profiles, which were mainly found in ethylene biosynthesis and signal transduction, photosynthesis regulation, carotenoid and flavonoid biosynthesis, chlorophyll degradation, ribosomal subunit expression changes, MAPK pathway, transcription factors and kinases. The affected protein levels were correlated with their corresponding gene transcript levels, such as NAC-NOR, MADS-RIN, IMA, TAGL1, MADS-MC and TDR4. Changes in the phosphorylation levels of NAC-NOR and IMA were involved in the regulation of tomato fruit-ripening. Although photosynthesis was inhibited, there were diverse primary and secondary metabolic pathways, such as glycolysis, fatty acid metabolism, vitamin metabolism and isoprenoid biosynthesis, regulated by phosphorylation. These data constitute a map of protein—protein phosphorylation in the regulation of tomato fruit-ripening, which lays the foundation for future in-depth study of the sophisticated molecular mechanisms of fruit-ripening and provide guidance for molecular breeding.
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20
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Zheng H, Jin R, Liu Z, Sun C, Shi Y, Grierson D, Zhu C, Li S, Ferguson I, Chen K. Role of the tomato fruit ripening regulator MADS-RIN in resistance to Botrytis cinerea infection. FOOD QUALITY AND SAFETY 2021. [DOI: 10.1093/fqsafe/fyab028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Tomato MADS-RIN (RIN) transcription factor has been shown to be a master activator regulating fruit ripening. Recent studies have revealed that in addition to activating many other cell wall genes, it also represses expression of XTH5, XTH8, and MAN4a, which are positively related to excess flesh softening and cell wall degradation, which might indicate it has a potential role in pathogen resistance of ripening fruit. In this study, both wild-type (WT) and RIN-knockout (RIN-KO) mutant tomato fruit were infected with Botrytis cinerea to investigate the function of RIN in defense against pathogen infection during ripening. The results showed that RIN-KO fruit were much more sensitive to B. cinerea infection with larger lesion sizes. Transcriptome data and qRT-PCR assay indicate genes of phenylalanine ammonialyase (PAL) and chitinase (CHI) in RIN-KO fruit were reduced and their corresponding enzyme activities were decreased. Transcripts of genes encoding pathogenesis-related proteins (PRs), including PR1a, PRSTH2, and APETALA2/Ethylene Response Factor (AP2/ERF) including ERF.A1, Pti5, Pti6, ERF.A4, were reduced in RIN-KO fruit compared to WT fruit. Moreover, in the absence of RIN the expression of genes encoding cell wall-modifying enzymes XTH5, XTH8, MAN4a has been reported to be elevated, which is potentially correlated with cell wall properties. When present, RIN represses transcription of XTH5 by activating ERF.F4, a class II (repressor class) ERF gene family member, and ERF.F5. These results support the conclusion that RIN enhances ripening-related resistance to gray mold infection by upregulating pathogen-resistance genes and defense enzyme activities as well as reducing accumulation of transcripts encoding some cell wall enzymes.
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Affiliation(s)
| | | | | | | | | | - Donald Grierson
- College of Agriculture and Biotechnology, Zhejiang University, Hangzhou,China
- Plant and Crop Sciences Division, School of Biosciences, University of Nottingham, Loughborough,UK
| | | | | | - Ian Ferguson
- Zhejiang University (Visiting Scientist), Hangzhou, China
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21
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Nieuwenhuizen NJ, Chen X, Pellan M, Zhang L, Guo L, Laing WA, Schaffer RJ, Atkinson RG, Allan AC. Regulation of wound ethylene biosynthesis by NAC transcription factors in kiwifruit. BMC PLANT BIOLOGY 2021; 21:411. [PMID: 34496770 PMCID: PMC8425125 DOI: 10.1186/s12870-021-03154-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 08/02/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND The phytohormone ethylene controls many processes in plant development and acts as a key signaling molecule in response to biotic and abiotic stresses: it is rapidly induced by flooding, wounding, drought, and pathogen attack as well as during abscission and fruit ripening. In kiwifruit (Actinidia spp.), fruit ripening is characterized by two distinct phases: an early phase of system-1 ethylene biosynthesis characterized by absence of autocatalytic ethylene, followed by a late burst of autocatalytic (system-2) ethylene accompanied by aroma production and further ripening. Progress has been made in understanding the transcriptional regulation of kiwifruit fruit ripening but the regulation of system-1 ethylene biosynthesis remains largely unknown. The aim of this work is to better understand the transcriptional regulation of both systems of ethylene biosynthesis in contrasting kiwifruit organs: fruit and leaves. RESULTS A detailed molecular study in kiwifruit (A. chinensis) revealed that ethylene biosynthesis was regulated differently between leaf and fruit after mechanical wounding. In fruit, wound ethylene biosynthesis was accompanied by transcriptional increases in 1-aminocyclopropane-1-carboxylic acid (ACC) synthase (ACS), ACC oxidase (ACO) and members of the NAC class of transcription factors (TFs). However, in kiwifruit leaves, wound-specific transcriptional increases were largely absent, despite a more rapid induction of ethylene production compared to fruit, suggesting that post-transcriptional control mechanisms in kiwifruit leaves are more important. One ACS member, AcACS1, appears to fulfil a dominant double role; controlling both fruit wound (system-1) and autocatalytic ripening (system-2) ethylene biosynthesis. In kiwifruit, transcriptional regulation of both system-1 and -2 ethylene in fruit appears to be controlled by temporal up-regulation of four NAC (NAM, ATAF1/2, CUC2) TFs (AcNAC1-4) that induce AcACS1 expression by directly binding to the AcACS1 promoter as shown using gel-shift (EMSA) and by activation of the AcACS1 promoter in planta as shown by gene activation assays combined with promoter deletion analysis. CONCLUSIONS Our results indicate that in kiwifruit the NAC TFs AcNAC2-4 regulate both system-1 and -2 ethylene biosynthesis in fruit during wounding and ripening through control of AcACS1 expression levels but not in leaves where post-transcriptional/translational regulatory mechanisms may prevail.
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Affiliation(s)
- Niels J. Nieuwenhuizen
- The New Zealand Institute for Plant and Food Research Limited (PFR), Private Bag 92169, Auckland, 1142 New Zealand
- School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, 1142 New Zealand
| | - Xiuyin Chen
- The New Zealand Institute for Plant and Food Research Limited (PFR), Private Bag 92169, Auckland, 1142 New Zealand
| | - Mickaël Pellan
- The New Zealand Institute for Plant and Food Research Limited (PFR), Private Bag 92169, Auckland, 1142 New Zealand
| | - Lei Zhang
- The New Zealand Institute for Plant and Food Research Limited (PFR), Private Bag 92169, Auckland, 1142 New Zealand
- Institute of Fruit and Tea, Hubei Academy of Agricultural Sciences, Wuhan, 430064 China
| | - Lindy Guo
- The New Zealand Institute for Plant and Food Research Limited (PFR), Private Bag 92169, Auckland, 1142 New Zealand
| | | | - Robert J. Schaffer
- School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, 1142 New Zealand
- PFR, 55 Old Mill Road, RD 3, Motueka, 7198 New Zealand
| | - Ross G. Atkinson
- The New Zealand Institute for Plant and Food Research Limited (PFR), Private Bag 92169, Auckland, 1142 New Zealand
| | - Andrew C. Allan
- The New Zealand Institute for Plant and Food Research Limited (PFR), Private Bag 92169, Auckland, 1142 New Zealand
- School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, 1142 New Zealand
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22
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Gan Z, Yuan X, Shan N, Wan C, Chen C, Xu Y, Xu Q, Chen J. AcWRKY40 mediates ethylene biosynthesis during postharvest ripening in kiwifruit. PLANT SCIENCE 2021; 309:110948. [PMID: 34134847 DOI: 10.1016/j.plantsci.2021.110948] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/14/2021] [Accepted: 05/18/2021] [Indexed: 02/07/2023]
Abstract
WRKY transcription factors belong to a superfamily that is involved in many important biological processes, including plant development and senescence. However, little is known about the transcriptional regulation mechanisms of WRKY genes involved in kiwifruit postharvest ripening. Here, we isolated a WRKY gene from the kiwifruit genome and named it AcWRKY40. AcWRKY40 is a nucleus-localized protein that possesses transcriptional activation activity. The expression of AcWRKY40 was detected, and the gene responded to ethylene treatment during kiwifruit postharvest ripening, indicating its involvement in this process at the transcriptional level. We found multiple cis-acting elements related to maturation and senescence in the AcWRKY40 promoter. GUS activity analysis showed that its promoter activity was induced by exogenous ethylene. Yeast one-hybrid and dual-luciferase assays demonstrated that AcWRKY40 binds to the promoters of AcSAM2, AcACS1, and AcACS2 to activate them. In addition, transient transformations showed that AcWRKY40 enhances the expression of AcSAM2, AcACS1, and AcACS2. Taken together, these results suggest that AcWRKY40 is involved in kiwifruit postharvest ripening, possibly by regulating the expression of genes related to ethylene biosynthesis, thus deepening our understanding of the regulatory mechanisms of WRKY transcription factors in fruit ripening.
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Affiliation(s)
- Zengyu Gan
- Jiangxi Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Jiangxi Agricultural University, Nanchang, 330045, China; Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits and Vegetables, Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Xin Yuan
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits and Vegetables, Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Nan Shan
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits and Vegetables, Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Chunpeng Wan
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits and Vegetables, Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Chuying Chen
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits and Vegetables, Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Yunhe Xu
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits and Vegetables, Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Qin Xu
- Agriculture and Rural Bureau of Gongcheng Yao Autonomous County, Guilin, 542500, China
| | - Jinyin Chen
- Jiangxi Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Jiangxi Agricultural University, Nanchang, 330045, China; Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits and Vegetables, Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang, 330045, China; College of Materials and Chemical Engineering, Pingxiang University, Pingxiang, 330075, China.
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23
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Characterization of RIN Isoforms and Their Expression in Tomato Fruit Ripening. Cells 2021; 10:cells10071739. [PMID: 34359909 PMCID: PMC8304285 DOI: 10.3390/cells10071739] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/02/2021] [Accepted: 07/07/2021] [Indexed: 11/17/2022] Open
Abstract
Ripening of tomato fleshy fruit is coordinated by transcription factor RIN, which triggers ethylene and carotenoid biosynthesis, sugar accumulation, and cell wall modifications. In this study, we identified and characterized complete sequences of the RIN chromosomal locus in two tomato Solanum lycopersicum cultivars, its rin/RIN genotype, and three wild green-fruited species differing in fruit color and composition. The results reveal that S. lycopersicum cultivars and some wild species (S. pennellii, S. habrochaites, and S. huaylasense) had a 3′-splicing site enabling the transcription of RIN1i and RIN2i isoforms. The other wild species (S. arcanum, S. chmielewskii, S. neorickii, and S. peruvianum) had a 3′-splicing site only for RIN2i, which was consistent with RIN1i and RIN2i expression patterns. The genotype rin/RIN, which had an extended 3′-terminal deletion in the rin allele, mainly expressed the chimeric RIN–MC transcript, which was also found in cultivars (RIN/RIN). The RIN1, but not RIN2, protein is able to induce the transcription of the reporter gene in the Y2H system, which positively correlated with the transcription profile of RIN1i and RIN target genes. We suggest that during fruit ripening, RIN1 activates ripening-related genes, whereas RIN2 and RIN–MC act as modulators by competing for RIN-binding sites in gene promoters, which should be confirmed by further studies on the association between RIN-splicing mechanisms and tomato fruit ripening.
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24
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Ito Y, Nakamura N, Kotake-Nara E. Semi-dominant effects of a novel ripening inhibitor (rin) locus allele on tomato fruit ripening. PLoS One 2021; 16:e0249575. [PMID: 33886595 PMCID: PMC8061929 DOI: 10.1371/journal.pone.0249575] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 03/21/2021] [Indexed: 11/17/2022] Open
Abstract
The tomato (Solanum lycopersicum) ripening inhibitor (rin) mutation completely represses fruit ripening, as rin fruits fail to express ripening-associated genes and remain green and firm. Moreover, heterozygous rin fruits (rin/+) ripen normally but have extended shelf life, an important consideration for this perishable fruit crop; therefore, heterozygous rin has been widely used to breed varieties that produce red tomatoes with improved shelf life. We previously used CRISPR/Cas9 to produce novel alleles at the rin locus. The wild-type allele RIN encodes a MADS-box transcription factor and the novel allele, named as rinG2, generates an early stop codon, resulting in C-terminal truncation of the transcription factor. Like rin fruits, rinG2 fruits exhibit extended shelf life, but unlike rin fruits, which remain yellow-green even after long-term storage, rinG2 fruits turn orange due to ripening-associated carotenoid production. Here, to explore the potential of the rinG2 mutation for breeding, we characterized the effects of rinG2 in the heterozygous state (rinG2/+) compared to the effects of rin/+. The softening of rinG2/+ fruits was delayed compared to the wild type but to a lesser degree than rin/+ fruits. Lycopene and β-carotene levels in rinG2/+ fruits were similar to those of the wild type, whereas rin/+ fruits accumulated half the amount of β-carotene compared to the wild type. The rinG2/+ fruits produced lower levels of ethylene than wild-type and rin/+ fruits. Expression analysis revealed that in rinG2/+ fruits, the rinG2 mutation (like rin) partially inhibited the expression of ripening-associated genes. The small differences in the inhibitory effects of rinG2 vs. rin coincided with small differences in phenotypes, such as ethylene production, softening, and carotenoid accumulation. Therefore, rinG2 represents a promising genetic resource for developing tomato cultivars with extended shelf life.
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Affiliation(s)
- Yasuhiro Ito
- Food Research Institute, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
| | - Nobutaka Nakamura
- Food Research Institute, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
| | - Eiichi Kotake-Nara
- Food Research Institute, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
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25
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Ji Y, Qu Y, Jiang Z, Yan J, Chu J, Xu M, Su X, Yuan H, Wang A. The mechanism for brassinosteroids suppressing climacteric fruit ripening. PLANT PHYSIOLOGY 2021; 185:1875-1893. [PMID: 33743010 PMCID: PMC8133653 DOI: 10.1093/plphys/kiab013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 01/02/2021] [Indexed: 05/21/2023]
Abstract
The plant hormone ethylene is important for the ripening of climacteric fruit, such as pear (Pyrus ussuriensis), and the brassinosteroid (BR) class of phytohormones affects ethylene biosynthesis during ripening via an unknown molecular mechanism. Here, we observed that exogenous BR treatment suppressed ethylene production and delayed fruit ripening, whereas treatment with a BR biosynthesis inhibitor promoted ethylene production and accelerated fruit ripening in pear, suggesting BR is a ripening suppressor. The expression of the transcription factor BRASSINAZOLE-RESISTANT 1PuBZR1 was enhanced by BR treatment during pear fruit ripening. PuBZR1 interacted with PuACO1, which converts 1-aminocyclopropane-1-carboxylic acid (ACC) to ethylene, and suppressed its activity. BR-activated PuBZR1 bound to the promoters of PuACO1 and of PuACS1a, which encodes ACC synthase, and directly suppressed their transcription. Moreover, PuBZR1 suppressed the expression of transcription factor PuERF2 by binding its promoter, and PuERF2 bound to the promoters of PuACO1 and PuACS1a. We concluded that PuBZR1 indirectly suppresses the transcription of PuACO1 and PuACS1a through its regulation of PuERF2. Ethylene production and expression profiles of corresponding apple (Malus domestica) homologs showed similar changes following epibrassinolide treatment. Together, these results suggest that BR-activated BZR1 suppresses ACO1 activity and the expression of ACO1 and ACS1, thereby reducing ethylene production and suppressing fruit ripening. This likely represents a conserved mechanism by which BR suppresses ethylene biosynthesis during climacteric fruit ripening.
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Affiliation(s)
- Yinglin Ji
- Key Laboratory of Fruit Postharvest Biology, Liaoning Province, College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Yi Qu
- Key Laboratory of Fruit Postharvest Biology, Liaoning Province, College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Zhongyu Jiang
- Key Laboratory of Fruit Postharvest Biology, Liaoning Province, College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Jijun Yan
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Jinfang Chu
- National Centre for Plant Gene Research (Beijing), Innovation Academy for Seed Design, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100039, China
| | - Mingyang Xu
- Key Laboratory of Fruit Postharvest Biology, Liaoning Province, College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Xin Su
- Key Laboratory of Fruit Postharvest Biology, Liaoning Province, College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Hui Yuan
- Key Laboratory of Fruit Postharvest Biology, Liaoning Province, College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
| | - Aide Wang
- Key Laboratory of Fruit Postharvest Biology, Liaoning Province, College of Horticulture, Shenyang Agricultural University, Shenyang 110866, China
- Author for communication:
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26
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Sharma K, Gupta S, Sarma S, Rai M, Sreelakshmi Y, Sharma R. Mutations in tomato 1-aminocyclopropane carboxylic acid synthase2 uncover its role in development beside fruit ripening. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 106:95-112. [PMID: 33370496 DOI: 10.1111/tpj.15148] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 11/26/2020] [Accepted: 12/03/2020] [Indexed: 06/12/2023]
Abstract
The role of ethylene in plant development is mostly inferred from its exogenous application. The usage of mutants affecting ethylene biosynthesis proffers a better alternative to decipher its role. In tomato (Solanum lycopersicum), 1-aminocyclopropane carboxylic acid synthase2 (ACS2) is a key enzyme regulating ripening-specific ethylene biosynthesis. We characterised two contrasting acs2 mutants; acs2-1 overproduces ethylene, has higher ACS activity, and has increased protein levels, while acs2-2 is an ethylene underproducer, displays lower ACS activity, and has lower protein levels than wild type. Consistent with high/low ethylene emission, the mutants show opposite phenotypes, physiological responses, and metabolomic profiles compared with the wild type. The acs2-1 mutant shows early seed germination, faster leaf senescence, and accelerated fruit ripening. Conversely, acs2-2 has delayed seed germination, slower leaf senescence, and prolonged fruit ripening. The phytohormone profiles of mutants were mostly opposite in the leaves and fruits. The faster/slower senescence of acs2-1/acs2-2 leaves correlated with the endogenous ethylene/zeatin ratio. The genetic analysis showed that the metabolite profiles of respective mutants co-segregated with the homozygous mutant progeny. Our results uncover that besides ripening, ACS2 participates in the vegetative and reproductive development of tomato. The distinct influence of ethylene on phytohormone profiles indicates the intertwining of ethylene action with other phytohormones in regulating plant development.
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Affiliation(s)
- Kapil Sharma
- Repository of Tomato Genomics Resources, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Soni Gupta
- Repository of Tomato Genomics Resources, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Supriya Sarma
- Repository of Tomato Genomics Resources, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Meenakshi Rai
- Repository of Tomato Genomics Resources, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Yellamaraju Sreelakshmi
- Repository of Tomato Genomics Resources, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Rameshwar Sharma
- Repository of Tomato Genomics Resources, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
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27
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Sharma K, Gupta S, Sarma S, Rai M, Sreelakshmi Y, Sharma R. Mutations in tomato 1-aminocyclopropane carboxylic acid synthase2 uncover its role in development beside fruit ripening. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 106:95-112. [PMID: 33370496 DOI: 10.1101/2020.05.12.090431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 11/26/2020] [Accepted: 12/03/2020] [Indexed: 05/24/2023]
Abstract
The role of ethylene in plant development is mostly inferred from its exogenous application. The usage of mutants affecting ethylene biosynthesis proffers a better alternative to decipher its role. In tomato (Solanum lycopersicum), 1-aminocyclopropane carboxylic acid synthase2 (ACS2) is a key enzyme regulating ripening-specific ethylene biosynthesis. We characterised two contrasting acs2 mutants; acs2-1 overproduces ethylene, has higher ACS activity, and has increased protein levels, while acs2-2 is an ethylene underproducer, displays lower ACS activity, and has lower protein levels than wild type. Consistent with high/low ethylene emission, the mutants show opposite phenotypes, physiological responses, and metabolomic profiles compared with the wild type. The acs2-1 mutant shows early seed germination, faster leaf senescence, and accelerated fruit ripening. Conversely, acs2-2 has delayed seed germination, slower leaf senescence, and prolonged fruit ripening. The phytohormone profiles of mutants were mostly opposite in the leaves and fruits. The faster/slower senescence of acs2-1/acs2-2 leaves correlated with the endogenous ethylene/zeatin ratio. The genetic analysis showed that the metabolite profiles of respective mutants co-segregated with the homozygous mutant progeny. Our results uncover that besides ripening, ACS2 participates in the vegetative and reproductive development of tomato. The distinct influence of ethylene on phytohormone profiles indicates the intertwining of ethylene action with other phytohormones in regulating plant development.
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Affiliation(s)
- Kapil Sharma
- Repository of Tomato Genomics Resources, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Soni Gupta
- Repository of Tomato Genomics Resources, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Supriya Sarma
- Repository of Tomato Genomics Resources, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Meenakshi Rai
- Repository of Tomato Genomics Resources, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Yellamaraju Sreelakshmi
- Repository of Tomato Genomics Resources, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
| | - Rameshwar Sharma
- Repository of Tomato Genomics Resources, Department of Plant Sciences, University of Hyderabad, Hyderabad, 500046, India
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28
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He L, Meng N, Castellarin SD, Wang Y, Sun Q, Li XY, Dong ZG, Tang XP, Duan CQ, Pan QH. Combined Metabolite and Transcriptome Profiling Reveals the Norisoprenoid Responses in Grape Berries to Abscisic Acid and Synthetic Auxin. Int J Mol Sci 2021; 22:ijms22031420. [PMID: 33572582 PMCID: PMC7867017 DOI: 10.3390/ijms22031420] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/22/2021] [Accepted: 01/27/2021] [Indexed: 12/15/2022] Open
Abstract
The abscisic acid (ABA) increase and auxin decline are both indicators of ripening initiation in grape berry, and norisoprenoid accumulation also starts at around the onset of ripening. However, the relationship between ABA, auxin, and norisoprenoids remains largely unknown, especially at the transcriptome level. To investigate the transcriptional and posttranscriptional regulation of the ABA and synthetic auxin 1-naphthaleneacetic acid (NAA) on norisoprenoid production, we performed time-series GC-MS and RNA-seq analyses on Vitis vinifera L. cv. Cabernet Sauvignon grape berries from pre-veraison to ripening. Higher levels of free norisoprenoids were found in ABA-treated mature berries in two consecutive seasons, and both free and total norisoprenoids were significantly increased by NAA in one season. The expression pattern of known norisoprenoid-associated genes in all samples and the up-regulation of specific alternative splicing isoforms of VviDXS and VviCRTISO in NAA-treated berries were predicted to contribute to the norisoprenoid accumulation in ABA and NAA-treated berries. Combined weighted gene co-expression network analysis (WGCNA) and DNA affinity purification sequencing (DAP-seq) analysis suggested that VviGATA26, and the previously identified switch genes of myb RADIALIS (VIT_207s0005g02730) and MAD-box (VIT_213s0158g00100) could be potential regulators of norisoprenoid accumulation. The positive effects of ABA on free norisoprenoids and NAA on total norisoprenoid accumulation were revealed in the commercially ripening berries. Since the endogenous ABA and auxin are sensitive to environmental factors, this finding provides new insights to develop viticultural practices for managing norisoprenoids in vineyards in response to changing climates.
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Affiliation(s)
- Lei He
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (L.H.); (N.M.); (Y.W.); (Q.S.); (X.-Y.L.); (C.-Q.D.)
- Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Nan Meng
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (L.H.); (N.M.); (Y.W.); (Q.S.); (X.-Y.L.); (C.-Q.D.)
- Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Simone D. Castellarin
- Wine Research Centre, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada;
| | - Yu Wang
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (L.H.); (N.M.); (Y.W.); (Q.S.); (X.-Y.L.); (C.-Q.D.)
- Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Qi Sun
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (L.H.); (N.M.); (Y.W.); (Q.S.); (X.-Y.L.); (C.-Q.D.)
- Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Xiang-Yi Li
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (L.H.); (N.M.); (Y.W.); (Q.S.); (X.-Y.L.); (C.-Q.D.)
- Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Zhi-Gang Dong
- Institute of Pomology, Shanxi Academy of Agricultural Sciences, Taiyuan 030801, China; (Z.-G.D.); (X.-P.T.)
| | - Xiao-Ping Tang
- Institute of Pomology, Shanxi Academy of Agricultural Sciences, Taiyuan 030801, China; (Z.-G.D.); (X.-P.T.)
| | - Chang-Qing Duan
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (L.H.); (N.M.); (Y.W.); (Q.S.); (X.-Y.L.); (C.-Q.D.)
- Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
| | - Qiu-Hong Pan
- Center for Viticulture & Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; (L.H.); (N.M.); (Y.W.); (Q.S.); (X.-Y.L.); (C.-Q.D.)
- Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China
- Correspondence: ; Tel.: +86-10-62736191
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Pattyn J, Vaughan‐Hirsch J, Van de Poel B. The regulation of ethylene biosynthesis: a complex multilevel control circuitry. THE NEW PHYTOLOGIST 2021; 229:770-782. [PMID: 32790878 PMCID: PMC7820975 DOI: 10.1111/nph.16873] [Citation(s) in RCA: 131] [Impact Index Per Article: 43.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 08/04/2020] [Indexed: 05/06/2023]
Abstract
The gaseous plant hormone ethylene is produced by a fairly simple two-step biosynthesis route. Despite this pathway's simplicity, recent molecular and genetic studies have revealed that the regulation of ethylene biosynthesis is far more complex and occurs at different layers. Ethylene production is intimately linked with the homeostasis of its general precursor S-adenosyl-l-methionine (SAM), which experiences transcriptional and posttranslational control of its synthesising enzymes (SAM synthetase), as well as the metabolic flux through the adjacent Yang cycle. Ethylene biosynthesis continues from SAM by two dedicated enzymes: 1-aminocyclopropane-1-carboxylic (ACC) synthase (ACS) and ACC oxidase (ACO). Although the transcriptional dynamics of ACS and ACO have been well documented, the first transcription factors that control ACS and ACO expression have only recently been discovered. Both ACS and ACO display a type-specific posttranslational regulation that controls protein stability and activity. The nonproteinogenic amino acid ACC also shows a tight level of control through conjugation and translocation. Different players in ACC conjugation and transport have been identified over the years, however their molecular regulation and biological significance is unclear, yet relevant, as ACC can also signal independently of ethylene. In this review, we bring together historical reports and the latest findings on the complex regulation of the ethylene biosynthesis pathway in plants.
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Affiliation(s)
- Jolien Pattyn
- Molecular Plant Hormone Physiology LaboratoryDivision of Crop BiotechnicsDepartment of BiosystemsUniversity of LeuvenWillem de Croylaan 42Leuven3001Belgium
| | - John Vaughan‐Hirsch
- Molecular Plant Hormone Physiology LaboratoryDivision of Crop BiotechnicsDepartment of BiosystemsUniversity of LeuvenWillem de Croylaan 42Leuven3001Belgium
| | - Bram Van de Poel
- Molecular Plant Hormone Physiology LaboratoryDivision of Crop BiotechnicsDepartment of BiosystemsUniversity of LeuvenWillem de Croylaan 42Leuven3001Belgium
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Characteristics of banana B genome MADS-box family demonstrate their roles in fruit development, ripening, and stress. Sci Rep 2020; 10:20840. [PMID: 33257717 PMCID: PMC7705751 DOI: 10.1038/s41598-020-77870-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 11/11/2020] [Indexed: 11/09/2022] Open
Abstract
MADS-box genes are critical regulators of growth and development in flowering plants. Sequencing of the Musa balbisiana (B) genome has provided a platform for the systematic analysis of the MADS-box gene family in the important banana ancestor Musa balbisiana. Seventy-seven MADS-box genes, including 18 type I and 59 type II, were strictly identified from the banana (Pisang Klutuk Wulung, PKW, 2n = 2x = 22) B genome. These genes have been preferentially placed on the banana B genome. Evolutionary analysis suggested that M. balbisiana MCM1-AGAMOUS-DEFICIENS-SRF (MbMADS) might be organized into the MIKCc, MIKC*, Mα, Mβ, and Mγ groups according to the phylogeny. MIKCc was then further categorized into 10 subfamilies according to conserved motif and gene structure analyses. The well-defined MADS-box genes highlight gene birth and death in banana. MbMADSes originated from the same ancestor as MaMADSes. Transcriptome analysis in cultivated banana (ABB) revealed that MbMADSes were conserved and differentially expressed in several organs, in various fruit developing and ripening stages, and in stress treatments, indicating the participation of these genes in fruit development, ripening, and stress responses. Of note, SEP/AGL2 and AG, as well as other several type II MADS-box genes, including the STMADS11 and TM3/SOC1 subfamilies, indicated elevated expression throughout banana fruit development, ripening, and stress treatments, indicating their new parts in controlling fruit development and ripening. According to the co-expression network analysis, MbMADS75 interacted with bZIP and seven other transcription factors to perform its function. This systematic analysis reveals fruit development, ripening, and stress candidate MbMADSes genes for additional functional studies in plants, improving our understanding of the transcriptional regulation of MbMADSes genes and providing a base for genetic modification of MADS-mediated fruit development, ripening, and stress.
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Expression profiling of MADS-box gene family revealed its role in vegetative development and stem ripening in S. spontaneum. Sci Rep 2020; 10:20536. [PMID: 33239664 PMCID: PMC7688973 DOI: 10.1038/s41598-020-77375-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 09/22/2020] [Indexed: 01/10/2023] Open
Abstract
Sugarcane is the most important sugar and biofuel crop. MADS-box genes encode transcription factors that are involved in developmental control and signal transduction in plants. Systematic analyses of MADS-box genes have been reported in many plant species, but its identification and characterization were not possible until a reference genome of autotetraploid wild type sugarcane specie, Saccharum spontaneum is available recently. We identified 182 MADS-box sequences in the S. spontaneum genome, which were annotated into 63 genes, including 6 (9.5%) genes with four alleles, 21 (33.3%) with three, 29 (46%) with two, 7 (11.1%) with one allele. Paralogs (tandem duplication and disperse duplicated) were also identified and characterized. These MADS-box genes were divided into two groups; Type-I (21 Mα, 4 Mβ, 4 Mγ) and Type-II (32 MIKCc, 2 MIKC*) through phylogenetic analysis with orthologs in Arabidopsis and sorghum. Structural diversity and distribution of motifs were studied in detail. Chromosomal localizations revealed that S. spontaneum MADS-box genes were randomly distributed across eight homologous chromosome groups. The expression profiles of these MADS-box genes were analyzed in leaves, roots, stem sections and after hormones treatment. Important alleles based on promoter analysis and expression variations were dissected. qRT-PCR analysis was performed to verify the expression pattern of pivotal S. spontaneum MADS-box genes and suggested that flower timing genes (SOC1 and SVP) may regulate vegetative development.
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Lira BS, Oliveira MJ, Shiose L, Wu RTA, Rosado D, Lupi ACD, Freschi L, Rossi M. Light and ripening-regulated BBX protein-encoding genes in Solanum lycopersicum. Sci Rep 2020; 10:19235. [PMID: 33159121 PMCID: PMC7648751 DOI: 10.1038/s41598-020-76131-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 10/20/2020] [Indexed: 12/15/2022] Open
Abstract
Light controls several aspects of plant development through a complex signalling cascade. Several B-box domain containing proteins (BBX) were identified as regulators of Arabidopsis thaliana seedling photomorphogenesis. However, the knowledge about the role of this protein family in other physiological processes and species remains scarce. To fill this gap, here BBX protein encoding genes in tomato genome were characterised. The robust phylogeny obtained revealed how the domain diversity in this protein family evolved in Viridiplantae and allowed the precise identification of 31 tomato SlBBX proteins. The mRNA profiling in different organs revealed that SlBBX genes are regulated by light and their transcripts accumulation is directly affected by the chloroplast maturation status in both vegetative and fruit tissues. As tomato fruits develops, three SlBBXs were found to be upregulated in the early stages, controlled by the proper chloroplast differentiation and by the PHYTOCHROME (PHY)-dependent light perception. Upon ripening, other three SlBBXs were transcriptionally induced by RIPENING INHIBITOR master transcriptional factor, as well as by PHY-mediated signalling and proper plastid biogenesis. Altogether, the results obtained revealed a conserved role of SlBBX gene family in the light signalling cascade and identified putative members affecting tomato fruit development and ripening.
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Affiliation(s)
- Bruno Silvestre Lira
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil
| | - Maria José Oliveira
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil
| | - Lumi Shiose
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil
| | - Raquel Tsu Ay Wu
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil
| | - Daniele Rosado
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil
- Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, NY, 11724, USA
| | | | - Luciano Freschi
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil
| | - Magdalena Rossi
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, 277, São Paulo, 05508-090, Brasil.
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Pu ZQ, Ma YY, Lu MX, Ma YQ, Xu ZQ. Cloning of a SEPALLATA4-like gene (IiSEP4) in Isatis indigotica Fortune and characterization of its function in Arabidopsis thaliana. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 154:229-237. [PMID: 32563851 DOI: 10.1016/j.plaphy.2020.05.031] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 05/07/2020] [Accepted: 05/25/2020] [Indexed: 06/11/2023]
Abstract
E-class MADS-box genes, SEPALLATA (SEP), participate in various aspects of plant development together with B-, C- and D-class MADS-box genes. IiSEP4, a homologous gene of SEP4, was cloned from Isatis indigotica. IiSEP4 was highly expressed in sepals, and its mRNA was mildly detected in leaves, inflorescences, flowers, stamens and young silicles. Constitutive expression of IiSEP4 in Arabidopsis thaliana caused early flowering, accompanied by the reduction of flowers and floral organs. Moreover, the sepals in some flowers were transformed into carpelloid structures with stigmatic papillae, and obviously accompanied by ovule formation. Yeast two-hybrid assays demonstrated that IiSEP4 interacts with other woad MADS proteins to determine the identity of floral organs. These findings reveal the important roles of IiSEP4 in floral development of I. indigotica. The results of this study can lay a foundation for further study on biological functions of MADS transcriptional factors in I. indigotica.
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Affiliation(s)
- Zuo-Qian Pu
- Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), Shaanxi Provincial Key Laboratory of Biotechnology, College of Life Sciences, Northwest University, Xi'an, 710069, China
| | - Ye-Ye Ma
- Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), Shaanxi Provincial Key Laboratory of Biotechnology, College of Life Sciences, Northwest University, Xi'an, 710069, China
| | - Meng-Xin Lu
- Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), Shaanxi Provincial Key Laboratory of Biotechnology, College of Life Sciences, Northwest University, Xi'an, 710069, China
| | - Yan-Qin Ma
- Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), Shaanxi Provincial Key Laboratory of Biotechnology, College of Life Sciences, Northwest University, Xi'an, 710069, China
| | - Zi-Qin Xu
- Key Laboratory of Resource Biology and Biotechnology in Western China (Ministry of Education), Shaanxi Provincial Key Laboratory of Biotechnology, College of Life Sciences, Northwest University, Xi'an, 710069, China.
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Li Z, Jiang G, Liu X, Ding X, Zhang D, Wang X, Zhou Y, Yan H, Li T, Wu K, Jiang Y, Duan X. Histone demethylase SlJMJ6 promotes fruit ripening by removing H3K27 methylation of ripening-related genes in tomato. THE NEW PHYTOLOGIST 2020; 227:1138-1156. [PMID: 32255501 DOI: 10.1111/nph.16590] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 03/27/2020] [Indexed: 05/22/2023]
Abstract
Fruit ripening is governed by a complex regulatory network. Reversible histone methylation and demethylation regulate chromatin structure and gene expression. However, little is known about the involvement of histone demethylases in regulating fruit ripening. Here, we found that the tomato (Solanum lycopersicum) SlJMJ6 encodes a histone lysine demethylase that specifically demethylates H3K27 methylation. Overexpression of SlJMJ6 accelerates tomato fruit ripening, which is associated with the upregulated expression of a large number of ripening-related genes. Integrated analysis of RNA-seq and chromatin immunoprecipitation followed by sequencing identified 32 genes directly targeted by SlJMJ6 and transcriptionally upregulated with decreased H3K27m3 in SlJMJ6-overexpressed fruit. Numerous SlJMJ6-regulated genes are involved in transcription regulation, ethylene biosynthesis, cell wall degradation and hormone signaling. Eleven ripening-related genes including RIPENING INHIBITOR (RIN), 1-aminocyclopropane 1-carboxylate synthase-4 (ACS4), 1-aminocyclopropane-1-carboxylate oxidase 1 (ACO1), pectate lyase (PL) and beta-galactosidase 4 (TBG4), and a DNA demethylase DML2, were confirmed to be regulated directly by SlJMJ6 through removing H3K27me3. Our results demonstrate that SlJMJ6 is a ripening-prompting H3K27me3 demethylase that activates the expression of the ripening-related genes by modulating H3K27me3, thereby facilitating tomato fruit ripening. Our work also reveals a novel link between histone demethylation and DNA demethylation in regulating fruit ripening. To our knowledge, this is the first report of the involvement of a histone lysine demethylase in the regulation of fruit ripening.
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Affiliation(s)
- Zhiwei Li
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Guoxiang Jiang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Xuncheng Liu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Science, Guangzhou, 510650, China
| | - Xiaochun Ding
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Dandan Zhang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Xiaowan Wang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yijie Zhou
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Huiling Yan
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Taotao Li
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Keqiang Wu
- Institute of Plant Biology, National Taiwan University, Taipei, 106, Taiwan
| | - Yueming Jiang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Science, Guangzhou, 510650, China
| | - Xuewu Duan
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Science, Guangzhou, 510650, China
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Chettry U, Chrungoo NK. A multifocal approach towards understanding the complexities of carotenoid biosynthesis and accumulation in rice grains. Brief Funct Genomics 2020; 19:324-335. [PMID: 32240289 DOI: 10.1093/bfgp/elaa007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 02/19/2020] [Accepted: 02/26/2020] [Indexed: 11/12/2022] Open
Abstract
Carotenoids are mostly C40 terpenoids that participate in several important functions in plants including photosynthesis, responses to various forms of stress, signal transduction and photoprotection. While the antioxidant potential of carotenoids is of particular importance for human health, equally important is the role of β-carotene as the precursor for vitamin A in the human diet. Rice, which contributes upto 40% of dietary energy for mankind, contains very low level of β-carotene, thereby making it an important crop for enhancing β-carotene accumulation in its grains and consequently targeting vitamin A deficiency. Biosynthesis of carotenoids in the endosperm of white rice is blocked at the first enzymatic step wherein geranylgeranyl diphosphate is converted to phytoene by the action of phytoene synthase (PSY). Strategies aimed at enhancing β-carotene levels in the endosperm of white rice identified Narcissus pseudonarcissus (npPSY) and bacterial CRT1 as the regulators of the carotenoid biosynthetic pathway in rice. Besides transcriptional regulation of PSY, posttranscriptional regulation of PSY expression by OR gene, molecular synergism between ε-LCY and β-LCY and epigenetic control of CRITSO through SET DOMAIN containing protein appear to be the other regulatory nodes which regulate carotenoid biosynthesis and accumulation in rice grains. In this review, we elucidate a comprehensive and deeper understanding of the regulatory mechanisms of carotenoid metabolism in crops that will enable us to identify an effective tool to alleviate carotenoid content in rice grains.
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Affiliation(s)
- Upasna Chettry
- Department of Botany, North-Eastern Hill University, Shillong 793022, India
| | - Nikhil K Chrungoo
- Department of Botany, North-Eastern Hill University, Shillong 793022, India
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Liang Q, Deng H, Li Y, Liu Z, Shu P, Fu R, Zhang Y, Pirrello J, Zhang Y, Grierson D, Bouzayen M, Liu Y, Liu M. Like Heterochromatin Protein 1b represses fruit ripening via regulating the H3K27me3 levels in ripening-related genes in tomato. THE NEW PHYTOLOGIST 2020; 227:485-497. [PMID: 32181875 DOI: 10.1111/nph.16550] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Accepted: 03/07/2020] [Indexed: 06/10/2023]
Abstract
Polycomb group (PcG) proteins play vital roles in plant development via epigenetically repressing the transcription of target genes. However, to date, their function in fruit ripening is largely unknown. Combining reverse genetic approaches, physiological methods, yeast two-hybrid, co-immunoprecipitation, and chromatin immunoprecipitation assays, we show that Like Heterochromatin Protein 1b (SlLHP1b), a tomato Polycomb Repressive Complex 1 (PRC1)-like protein with a ripening-related expression pattern, represses fruit ripening via colocalization with epigenetic mark H3K27me3. RNA interference (RNAi)-mediated downregulation of SlLHP1b advanced ripening initiation, climacteric ethylene production, and fruit softening, whereas SlLHP1b overexpression delayed these events. Ripening-related genes were significantly upregulated in SlLHP1b RNAi fruits and downregulated in overexpressing fruits compared with wild-type. Furthermore, SlLHP1b protein interacts with ripening regulator MSI1, a subunit of the PRC2 complex. Moreover, SlLHP1b also binds the epigenetic histone mark H3K27me3 in vivo and chromatin immunoprecipitation-quantitative PCR results showed binding occurs preferentially to regions of ripening-associated chromatin marked by histone H3K27me3. Furthermore, the H3K27me3 levels in chromatin of ripening-related genes is negatively correlated with accumulation of their transcripts in SlLHP1b down or upregulated fruits during ripening. Our findings reveal a novel regulatory function of SlLHP1b in fruit and provide new insights into the PcG-mediated epigenetic regulation of climacteric fruit ripening.
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Affiliation(s)
- Qi Liang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Heng Deng
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Yuxiang Li
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Ziyu Liu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Peng Shu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Rao Fu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Yaoxin Zhang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Julien Pirrello
- GBF Laboratory, Université de Toulouse, INRA, Castanet-Tolosan, 31320, France
| | - Yang Zhang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Don Grierson
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Mondher Bouzayen
- GBF Laboratory, Université de Toulouse, INRA, Castanet-Tolosan, 31320, France
| | - Yongsheng Liu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China
- School of Horticulture, Anhui Agricultural University, Hefei, 230036, China
| | - Mingchun Liu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, Sichuan, China
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Yue P, Lu Q, Liu Z, Lv T, Li X, Bu H, Liu W, Xu Y, Yuan H, Wang A. Auxin-activated MdARF5 induces the expression of ethylene biosynthetic genes to initiate apple fruit ripening. THE NEW PHYTOLOGIST 2020; 226:1781-1795. [PMID: 32083754 PMCID: PMC7317826 DOI: 10.1111/nph.16500] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 02/12/2020] [Indexed: 05/18/2023]
Abstract
The gaseous plant hormone ethylene induces the ripening of climacteric fruit, including apple (Malus domestica). Another phytohormone, auxin, is known to promote ethylene production in many horticultural crops, but the regulatory mechanism remains unclear. Here, we found that auxin application induces ethylene production in apple fruit before the stage of commercial harvest, when they are not otherwise capable of ripening naturally. The expression of MdARF5, a member of the auxin response factor transcription factor (TF) family involved in the auxin signaling pathway, was enhanced by treatment with the synthetic auxin naphthaleneacetic acid (NAA). Further studies revealed that MdARF5 binds to the promoter of MdERF2, encoding a TF in the ethylene signaling pathway, as well as the promoters of two 1-aminocyclopropane-1-carboxylic acid synthase (ACS) genes (MdACS3a and MdACS1) and an ACC oxidase (ACO) gene, MdACO1, all of which encode key steps in ethylene biosynthesis, thereby inducing their expression. We also observed that auxin-induced ethylene production was dependent on the methylation of the MdACS3a promoter. Our findings reveal that auxin induces ethylene biosynthesis in apple fruit through activation of MdARF5 expression.
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Affiliation(s)
- Pengtao Yue
- College of HorticultureShenyang Agricultural UniversityShenyang110866China
| | - Qian Lu
- College of HorticultureShenyang Agricultural UniversityShenyang110866China
| | - Zhi Liu
- Liaoning Institute of PomologyXiongyue115009China
| | - Tianxing Lv
- Liaoning Institute of PomologyXiongyue115009China
| | - Xinyue Li
- College of HorticultureShenyang Agricultural UniversityShenyang110866China
| | - Haidong Bu
- College of HorticultureShenyang Agricultural UniversityShenyang110866China
| | - Weiting Liu
- College of HorticultureShenyang Agricultural UniversityShenyang110866China
| | - Yaxiu Xu
- College of HorticultureShenyang Agricultural UniversityShenyang110866China
| | - Hui Yuan
- College of HorticultureShenyang Agricultural UniversityShenyang110866China
| | - Aide Wang
- College of HorticultureShenyang Agricultural UniversityShenyang110866China
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Meng N, Wei Y, Gao Y, Yu K, Cheng J, Li XY, Duan CQ, Pan QH. Characterization of Transcriptional Expression and Regulation of Carotenoid Cleavage Dioxygenase 4b in Grapes. FRONTIERS IN PLANT SCIENCE 2020; 11:483. [PMID: 32457771 PMCID: PMC7227400 DOI: 10.3389/fpls.2020.00483] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 03/31/2020] [Indexed: 05/23/2023]
Abstract
Norisoprenoids are important aromatic volatiles contributing to the pleasant floral/fruity odor in grapes and wine. They are produced from carotenoids through the cleavage of carotenoid cleavage dioxygenases (CCDs). However, the underlying mechanisms regulating VvCCD expression remain poorly understood. In this study, we showed that VvCCD4b expression was positively correlated with the accumulation of β-damascenone, β-ionone, 6-methyl-5-hepten-2-one, geranylacetone, dihydroedulan I, and total norisoprenoids in developing grapes in two vintages from two regions. VvCCD4b was found to be principally expressed in flowers, mature leaves, and berries. Abscisic acid strongly induced the expression of this gene. Additionally, the present study preliminarily indicated that the activity of the VvCCD4b promoter was dropped under 37°C treatment and also responded to the illumination change. VvCCD4b was expressed in parallel with VvMADS4 in developing grape berries. The latter is a MADS family transcription factor and nucleus-localized protein that was captured by yeast one-hybrid. A dual-luciferase reporter assay in tobacco leaves revealed that VvMADS4 downregulated the activity of the VvCCD4b promoter. VvMADS4 overexpression in grape calli and Vitis quinquangularis Rehd. leaves repressed the VvCCD4b expression. In summary, this work demonstrates that VvCCD4b expression is positively correlated with the accumulation of norisoprenoids, and VvMADS4 is a potential negative regulator of VvCCD4b. Our results provide a new perspective for understanding the regulation of VvCCD4b expression and norisoprenoid accumulation in grapes.
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Affiliation(s)
- Nan Meng
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agricultural and Rural Affairs, Beijing, China
| | - Yi Wei
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agricultural and Rural Affairs, Beijing, China
| | - Yuan Gao
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agricultural and Rural Affairs, Beijing, China
| | - Keji Yu
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agricultural and Rural Affairs, Beijing, China
| | - Jing Cheng
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agricultural and Rural Affairs, Beijing, China
| | - Xiang-Yi Li
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agricultural and Rural Affairs, Beijing, China
| | - Chang-Qing Duan
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agricultural and Rural Affairs, Beijing, China
| | - Qiu-Hong Pan
- Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- Key Laboratory of Viticulture and Enology, Ministry of Agricultural and Rural Affairs, Beijing, China
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Li S, Zhu B, Pirrello J, Xu C, Zhang B, Bouzayen M, Chen K, Grierson D. Roles of RIN and ethylene in tomato fruit ripening and ripening-associated traits. THE NEW PHYTOLOGIST 2020; 226:460-475. [PMID: 31814125 PMCID: PMC7154718 DOI: 10.1111/nph.16362] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 12/01/2019] [Indexed: 05/13/2023]
Abstract
RIPENING INHIBITOR (RIN)-deficient fruits generated by CRISPR/Cas9 initiated partial ripening at a similar time to wild-type (WT) fruits but only 10% WT concentrations of carotenoids and ethylene (ET) were synthesized. RIN-deficient fruit never ripened completely, even when supplied with exogenous ET. The low amount of endogenous ET that they did produce was sufficient to enable ripening initiation and this could be suppressed by the ET perception inhibitor 1-MCP. The reduced ET production by RIN-deficient tomatoes was due to an inability to induce autocatalytic system-2 ET synthesis, a characteristic feature of climacteric ripening. Production of volatiles and transcripts of key volatile biosynthetic genes also were greatly reduced in the absence of RIN. By contrast, the initial extent and rates of softening in the absence of RIN were similar to WT fruits, although detailed analysis showed that the expression of some cell wall-modifying enzymes was delayed and others increased in the absence of RIN. These results support a model where RIN and ET, via ERFs, are required for full expression of ripening genes. Ethylene initiates ripening of mature green fruit, upregulates RIN expression and other changes, including system-2 ET production. RIN, ET and other factors are required for completion of the full fruit-ripening programme.
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Affiliation(s)
- Shan Li
- College of Agriculture & BiotechnologyZhejiang UniversityZijingang CampusHangzhou310058China
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative BiologyZhejiang UniversityZijingang CampusHangzhou310058China
| | - Benzhong Zhu
- College of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijing100083China
| | - Julien Pirrello
- GBF LaboratoryUniversity of ToulouseINRACastanet‐Tolosan31320France
| | - Changjie Xu
- College of Agriculture & BiotechnologyZhejiang UniversityZijingang CampusHangzhou310058China
| | - Bo Zhang
- College of Agriculture & BiotechnologyZhejiang UniversityZijingang CampusHangzhou310058China
| | - Mondher Bouzayen
- GBF LaboratoryUniversity of ToulouseINRACastanet‐Tolosan31320France
| | - Kunsong Chen
- College of Agriculture & BiotechnologyZhejiang UniversityZijingang CampusHangzhou310058China
| | - Donald Grierson
- Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative BiologyZhejiang UniversityZijingang CampusHangzhou310058China
- Plant and Crop Sciences DivisionSchool of BiosciencesUniversity of NottinghamSutton Bonington CampusLoughboroughLE12 5RDUK
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Quinet M, Angosto T, Yuste-Lisbona FJ, Blanchard-Gros R, Bigot S, Martinez JP, Lutts S. Tomato Fruit Development and Metabolism. FRONTIERS IN PLANT SCIENCE 2019; 10:1554. [PMID: 31850035 PMCID: PMC6895250 DOI: 10.3389/fpls.2019.01554] [Citation(s) in RCA: 155] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 11/07/2019] [Indexed: 05/20/2023]
Abstract
Tomato (Solanum lycopersicum L.) belongs to the Solanaceae family and is the second most important fruit or vegetable crop next to potato (Solanum tuberosum L.). It is cultivated for fresh fruit and processed products. Tomatoes contain many health-promoting compounds including vitamins, carotenoids, and phenolic compounds. In addition to its economic and nutritional importance, tomatoes have become the model for the study of fleshy fruit development. Tomato is a climacteric fruit and dramatic metabolic changes occur during its fruit development. In this review, we provide an overview of our current understanding of tomato fruit metabolism. We begin by detailing the genetic and hormonal control of fruit development and ripening, after which we document the primary metabolism of tomato fruits, with a special focus on sugar, organic acid, and amino acid metabolism. Links between primary and secondary metabolic pathways are further highlighted by the importance of pigments, flavonoids, and volatiles for tomato fruit quality. Finally, as tomato plants are sensitive to several abiotic stresses, we briefly summarize the effects of adverse environmental conditions on tomato fruit metabolism and quality.
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Affiliation(s)
- Muriel Quinet
- Groupe de Recherche en Physiologie Végétale, Earth and Life Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Trinidad Angosto
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, Almería, Spain
| | - Fernando J. Yuste-Lisbona
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, Almería, Spain
| | - Rémi Blanchard-Gros
- Groupe de Recherche en Physiologie Végétale, Earth and Life Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | - Servane Bigot
- Groupe de Recherche en Physiologie Végétale, Earth and Life Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
| | | | - Stanley Lutts
- Groupe de Recherche en Physiologie Végétale, Earth and Life Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
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Stanley L, Yuan YW. Transcriptional Regulation of Carotenoid Biosynthesis in Plants: So Many Regulators, So Little Consensus. FRONTIERS IN PLANT SCIENCE 2019; 10:1017. [PMID: 31447877 PMCID: PMC6695471 DOI: 10.3389/fpls.2019.01017] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 07/22/2019] [Indexed: 05/19/2023]
Abstract
In plants, the carotenoid biosynthesis pathway (CBP) is essential for the production of photosynthetic and protective pigments, plant hormones, and visual/olfactory attractants for animal pollinators and seed dispersers. The regulation of carotenoid biosynthesis at the transcriptional level is vitally important for all of these functions and has been the subject of intensive research. Many putative transcriptional regulators, both direct and indirect, have been identified through conventional mutant analysis, transcriptome profiling, yeast one-hybrid screening, and candidate gene approaches. Despite this progress, our understanding of the transcriptional regulation of carotenoid biosynthesis remains fragmented and incomplete. Frequently, a stimulus or regulator is known, but the mechanism by which it affects transcription has not been elucidated. In other cases, mechanisms have been proposed (such as direct binding of a CBP gene promoter by a transcription factor), but function was tested only in vitro or in heterologous systems, making it unclear whether these proteins actually play a role in carotenoid regulation in their endogenous environments. Even in cases where the mechanism is relatively well understood, regulators are often studied in isolation, either in a single plant species or outside the context of other known regulators. This presents a conundrum: why so many candidate regulators but so little consensus? Here we summarize current knowledge on transcriptional regulation of the CBP, lay out the challenges contributing to this conundrum, identify remaining knowledge gaps, and suggest future research directions to address these challenges and knowledge gaps.
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Affiliation(s)
- Lauren Stanley
- Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT, United States
| | - Yao-Wu Yuan
- Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT, United States
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Dong Y, Guan M, Wang L, Yuan L, Sun X, Liu S. Transcriptome Analysis of Low-Temperature-Induced Breaking of Garlic Aerial Bulb Dormancy. Int J Genomics 2019; 2019:9140572. [PMID: 31485438 PMCID: PMC6702850 DOI: 10.1155/2019/9140572] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/25/2019] [Accepted: 05/19/2019] [Indexed: 11/18/2022] Open
Abstract
The long history of asexual reproduction of garlic using garlic cloves has resulted in virus accumulation and genetic depression. Propagation of garlic seedlings by tissue culture can both eliminate viruses and improve breeding efficiency. Aerial bulbs are the first-choice materials for breeding virus-free garlic seedlings under external conditions, but they show dormancy just like garlic bulbs. However, low temperatures can quickly break dormancy. In this research, we used a high-throughput sequencing method to sequence aerial bulbs during dormancy and after low-temperature-induced breaking of dormancy to screen out the key differentially expressed genes (DEGs) associated with low temperature and to provide a theoretical basis for exploring the molecular mechanism of low-temperature-induced breaking of aerial bulb dormancy. The high-throughput transcriptome sequencing results showed that 6,675 DEGs were upregulated and 36,596 DEGs were downregulated in the aerial bulbs given low-temperature treatment. Then, 19,507 DEGs were assigned KEGG annotations, among which most DEGs were annotated to the metabolism pathway (11,817 genes, accounting for 60.58%), followed by the genetic information processing pathway (4,521 genes, accounting for 23.18%). The DEGs were mostly concentrated in pathways such as protein processing in the endoplasmic reticulum, plant-pathogen interaction, plant hormone signal transduction, and ribosome biogenesis in eukaryotes, with significant enrichment. The key DEGs related to calcium signaling, hormonal signaling, and transcription factors were screened out, including CaM, CDPK, and CML in accessory pathways of calcium signaling; GA20ox, GAI1, and GA2ox in accessory pathways of hormonal signaling; and transcription factor genes such as MYB, AP2/ERF, bHLH, MADS, and bZIP. qRT-PCR verification results were consistent with the sequencing results, indicating that the transcriptome sequencing data were accurate and reliable. Our results provide a theoretical basis for breaking the dormancy of aerial bulbs with low-temperature treatment to produce virus-free seedlings and increase the output and quality of garlic.
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Affiliation(s)
- Yuhui Dong
- State Key Laboratory of Crop Biology, Shandong Garlic Engineering Research Center, College of Horticulture Science and Engineering, Shandong Agricultural University, No. 61, Daizong Road, Tai'an, Shandong Province 271000, China
| | - Mengjiao Guan
- State Key Laboratory of Crop Biology, Shandong Garlic Engineering Research Center, College of Horticulture Science and Engineering, Shandong Agricultural University, No. 61, Daizong Road, Tai'an, Shandong Province 271000, China
| | - Lixia Wang
- State Key Laboratory of Crop Biology, Shandong Garlic Engineering Research Center, College of Horticulture Science and Engineering, Shandong Agricultural University, No. 61, Daizong Road, Tai'an, Shandong Province 271000, China
| | - Lei Yuan
- State Key Laboratory of Crop Biology, Shandong Garlic Engineering Research Center, College of Horticulture Science and Engineering, Shandong Agricultural University, No. 61, Daizong Road, Tai'an, Shandong Province 271000, China
| | - Xiudong Sun
- State Key Laboratory of Crop Biology, Shandong Garlic Engineering Research Center, College of Horticulture Science and Engineering, Shandong Agricultural University, No. 61, Daizong Road, Tai'an, Shandong Province 271000, China
| | - Shiqi Liu
- State Key Laboratory of Crop Biology, Shandong Garlic Engineering Research Center, College of Horticulture Science and Engineering, Shandong Agricultural University, No. 61, Daizong Road, Tai'an, Shandong Province 271000, China
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Waseem M, Li N, Su D, Chen J, Li Z. Overexpression of a basic helix-loop-helix transcription factor gene, SlbHLH22, promotes early flowering and accelerates fruit ripening in tomato (Solanum lycopersicum L.). PLANTA 2019; 250:173-185. [PMID: 30955097 DOI: 10.1007/s00425-019-03157-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/01/2019] [Indexed: 06/09/2023]
Abstract
The overexpression of SlbHLH22 functioned in controlling flowering time, accelerated fruit ripening, and produced more ethylene-producing phenotypes in tomato. Flowering and fruit ripening are two complex transition processes regulated by various internal and external factors that ultimately lead to fruit maturation and final seed dispersal. The basic helix-loop-helix (bHLH) transcription factor is the largest TF gene family in plants that controls various biological and developmental aspects, but the actual roles of these genes have not been fully studied. Here, we performed a functional characterization of the bHLH gene SlbHLH22 in tomato. SlbHLH22 was fully expressed in tomato flowers, while a moderate expression level was also observed in fruits at different developmental stages. Overexpression of the SlbHLH22 gene revealed that it is highly involved in controlling flowering time, through the activation of the SlSFT or SlLFY genes, and promoting fruit ripening and improved carotenoid accumulation. The expression patterns of carotenoid-related genes (SlPYS1) were also upregulated in transgenic tomato fruits. In transgenic tomato fruit, we observed clear changes in colour from green to orange with enhanced expression of the SlbHLH22 gene. SlbHLH22 was upregulated under exogenous ACC, IAA, ABA, and ethephon. Overexpression of SlbHLH22 also promotes ethylene production. Moreover, ethylene biosynthesis and perception genes (SlACO3, SlACS1, SlACS2, SlACS4, SlACS1a, SlEIN1, SlEIN2, SlEIN3, SlEIN4, SlETR2, SlETR3, SlSAM3, and SlSAMS) were upregulated. Ripening-related genes (SlAP2a, SlCNR, SlNOR, SlMYB, and SlTAG) were consistent in their expression pattern in transgenic plants. Finally, our study provides evidence that tomato bHLH genes play an important role in flowering, fruit ripening, and development.
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Affiliation(s)
- Muhammad Waseem
- School of Life Sciences, Chongqing University, Shapingba, Chongqing, 401331, People's Republic of China
- Key Laboratory of Functional Gene and Regulation Technologies Under Chongqing Municipal Education Commission, Chongqing, People's Republic of China
| | - Ning Li
- School of Life Sciences, Chongqing University, Shapingba, Chongqing, 401331, People's Republic of China
- Key Laboratory of Functional Gene and Regulation Technologies Under Chongqing Municipal Education Commission, Chongqing, People's Republic of China
| | - Deding Su
- School of Life Sciences, Chongqing University, Shapingba, Chongqing, 401331, People's Republic of China
- Key Laboratory of Functional Gene and Regulation Technologies Under Chongqing Municipal Education Commission, Chongqing, People's Republic of China
| | - Jingxuan Chen
- School of Life Sciences, Chongqing University, Shapingba, Chongqing, 401331, People's Republic of China
- Key Laboratory of Functional Gene and Regulation Technologies Under Chongqing Municipal Education Commission, Chongqing, People's Republic of China
| | - Zhengguo Li
- School of Life Sciences, Chongqing University, Shapingba, Chongqing, 401331, People's Republic of China.
- Key Laboratory of Functional Gene and Regulation Technologies Under Chongqing Municipal Education Commission, Chongqing, People's Republic of China.
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Wang Y, Zhang J, Hu Z, Guo X, Tian S, Chen G. Genome-Wide Analysis of the MADS-Box Transcription Factor Family in Solanum lycopersicum. Int J Mol Sci 2019; 20:ijms20122961. [PMID: 31216621 PMCID: PMC6627509 DOI: 10.3390/ijms20122961] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/13/2019] [Accepted: 06/15/2019] [Indexed: 11/16/2022] Open
Abstract
MADS-box family genes encode transcription factors that are involved in multiple developmental processes in plants, especially in floral organ specification, fruit development, and ripening. However, a comprehensive analysis of tomato MADS-box family genes, which is an important model plant to study flower fruit development and ripening, remains obscure. To gain insight into the MADS-box genes in tomato, 131 tomato MADS-box genes were identified. These genes could be divided into five groups (Mα, Mβ, Mγ, Mδ, and MIKC) and were found to be located on all 12 chromosomes. We further analyzed the phylogenetic relationships among Arabidopsis and tomato, as well as the protein motif structure and exon–intron organization, to better understand the tomato MADS-box gene family. Additionally, owing to the role of MADS-box genes in floral organ identification and fruit development, the constitutive expression patterns of MADS-box genes at different stages in tomato development were identified. We analyzed 15 tomato MADS-box genes involved in floral organ identification and five tomato MADS-box genes related to fruit development by qRT-PCR. Collectively, our study provides a comprehensive and systematic analysis of the tomato MADS-box genes and would be valuable for the further functional characterization of some important members of the MADS-box gene family.
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Affiliation(s)
- Yunshu Wang
- Laboratory of molecular biology of tomato, Bioengineering College, Chongqing University, Chongqing 400044, China.
| | - Jianling Zhang
- Laboratory of molecular biology of tomato, Bioengineering College, Chongqing University, Chongqing 400044, China.
| | - Zongli Hu
- Laboratory of molecular biology of tomato, Bioengineering College, Chongqing University, Chongqing 400044, China.
| | - Xuhu Guo
- Laboratory of molecular biology of tomato, Bioengineering College, Chongqing University, Chongqing 400044, China.
| | - Shibing Tian
- The Institute of Vegetable Research, Chongqing Academy of Agricultural Sciences, Chongqing 401329, China.
| | - Guoping Chen
- Laboratory of molecular biology of tomato, Bioengineering College, Chongqing University, Chongqing 400044, China.
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Moya-León MA, Mattus-Araya E, Herrera R. Molecular Events Occurring During Softening of Strawberry Fruit. FRONTIERS IN PLANT SCIENCE 2019; 10:615. [PMID: 31156678 PMCID: PMC6529986 DOI: 10.3389/fpls.2019.00615] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 04/25/2019] [Indexed: 05/08/2023]
Abstract
Changes in fruit texture taking place during ripening, described as softening, are mainly due to alterations in structure and/or composition of the cell wall. Several non-covalent interactions between the three carbohydrate polymers of the cell wall, cellulose, pectins and hemicellulose, and many structural proteins and ions, enable a complex structure. During softening, the disassembly of the cell wall structure takes place, mediated by a complete set of cell wall degrading enzymes or proteins. Softening is a coordinated event that requires the orchestrated participation of a wide variety of proteins. Plant hormones and a set of transcription factors are the organizers of this multi-protein effort. Strawberry is a non climacteric fruit that softens intensively during the last stages of development. The Chilean strawberry fruit (Fragaria chiloensis), the maternal relative of the commercial strawberry (F. × ananassa), softens even faster than commercial strawberry. Softening of the Chilean strawberry fruit has been studied at different levels: changes in cell wall polymers, activity of cell wall degrading enzymes and transcriptional changes of their genes, providing a general view of the complex process. The search for the 'orchestra director' that could coordinate softening events in strawberry fruit has been focussed on hormones like ABA and auxins, and more precisely the relation ABA/AUX. These hormones regulate the expression of many cell wall degrading enzyme genes, and this massive transcriptional change that takes place involves the participation of key transcriptional factors (TF). This review provides an update of the present knowledge regarding the softening of strawberry fruit. Nevertheless, the entire softening process is still under active research especially for the great influence of texture on fruit quality and its high impact on fruit shelf life, and therefore it is expected that new and promising information will illuminate the field in the near future.
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Affiliation(s)
| | | | - Raul Herrera
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
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Yu T, Tzeng DTW, Li R, Chen J, Zhong S, Fu D, Zhu B, Luo Y, Zhu H. Genome-wide identification of long non-coding RNA targets of the tomato MADS box transcription factor RIN and function analysis. ANNALS OF BOTANY 2019; 123:469-482. [PMID: 30376036 PMCID: PMC6377105 DOI: 10.1093/aob/mcy178] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 10/08/2018] [Indexed: 05/22/2023]
Abstract
BACKGROUND AND AIMS In recent years, increasing numbers of long non-coding RNAs (lncRNAs) have been identified in humans, animals and plants, and several of them have been shown to play important roles in diverse biological processes. However, little work has been performed on the regulation mechanism of lncRNA biogenesis and expression, especially in plants. Compared with studies of tomato MADS-box transcription factor RIPENING INHIBITOR (RIN) target coding genes, there are few reports on its relationship to non-coding RNAs. The aim of the present study was to identify and explore the specific role of RIN target lncRNAs in tomato fruit development and ripening. METHODS lncRNA targets of RIN were identified by chromatin immunoprecipitation sequencing (ChIP-seq) combined with RNA deep sequencing analysis. Six selected lncRNA targets were validated by quantitative real-time PCR, ChIP and electrophoretic mobility shift assays, and we further confirmed differential expression between wild-type and ripening-deficient mutant fruit, and RIN direct binding in the promoter regions. By means of virus-induced gene silencing (VIGS) assays and a clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) genome editing strategy, the ripening-related function of a specific target lncRNA (lncRNA2155) was studied. KEY RESULTS We identified 187 lncRNAs as direct RIN targets, which exhibited RIN binding sites in their promoters and showed different expression between the wild-type and rin mutant. Six target lncRNAs were shown to bind with RIN directly in their promoters in vivo and in vitro. Moreover, using CRISPR/Cas9 technology to knock out the locus of the target lncRNA2155 indicated that it delayed fruit ripening in tomato. CONCLUSIONS Collectively, these findings provide new insight into RIN in the transcriptional regulation of lncRNAs and suggest that lncRNAs will contribute to a better understanding of the RIN regulatory network that controls fruit ripening.
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Affiliation(s)
- Tongtong Yu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - David T W Tzeng
- EG12 Science Centre School of Life Sciences, Chinese University of Hong Kong, Hong Kong, China
| | - Ran Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Jianye Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bio resources/Guangdong Key Laboratory for Postharvest Science, College of Horticultural Science, South China Agricultural University, Guangzhou, China
| | - Silin Zhong
- EG12 Science Centre School of Life Sciences, Chinese University of Hong Kong, Hong Kong, China
| | - Daqi Fu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Benzhong Zhu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yunbo Luo
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- For correspondence: and
| | - Hongliang Zhu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
- For correspondence: and
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Mukherjee S. Recent advancements in the mechanism of nitric oxide signaling associated with hydrogen sulfide and melatonin crosstalk during ethylene-induced fruit ripening in plants. Nitric Oxide 2019; 82:25-34. [DOI: 10.1016/j.niox.2018.11.003] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 10/11/2018] [Accepted: 11/18/2018] [Indexed: 12/11/2022]
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Hu Z, Wang R, Zheng M, Liu X, Meng F, Wu H, Yao Y, Xin M, Peng H, Ni Z, Sun Q. TaWRKY51 promotes lateral root formation through negative regulation of ethylene biosynthesis in wheat (Triticum aestivum L.). THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2018; 96:372-388. [PMID: 30044519 DOI: 10.1111/tpj.14038] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/05/2018] [Accepted: 07/09/2018] [Indexed: 05/27/2023]
Abstract
Common wheat (Triticum aestivum L.) is an important staple food crop worldwide. Lateral roots (LRs), as the major component of root architecture, affect water and nutrient uptake in wheat. The phytohormone ethylene is known to affect LR formation; however, the factor(s) modulating ethylene during this process have not yet been elucidated in wheat. Here we identified wheat TaWRKY51 as a key factor that functions in LR formation by modulating ethylene biosynthesis. Wheat TaWRKY51RNA interference lines (TaWRKY51-RNAi) and the homozygous mutants tawrky51-2a and tawrky51-2b all produced fewer LRs than the wild type and negative transgenic plants, whereas the TaWRKY51 overexpression lines (TaWRKY51-OE) had the opposite phenotype. Transcription analysis revealed that 1-aminocyclopropane-1-carboxylic acid synthase (ACS) genes (TaACS2, TaACS7 and TaACS8) involved in ethylene biosynthesis were downregulated in TaWRKY51-OE lines but upregulated in TaWRKY51-RNAi lines. The rate of ethylene production also decreased in TaWRKY51-OE lines but increased in TaWRKY51-RNAi lines compared with their respective negative transgenic controls. Electrophoretic mobility shift and transient expression assays revealed that TaWRKY51 inhibits the expression of ACS genes by binding to the W-box cis-element present in their promoter region. Moreover, overexpression of ACS2 or exogenous application of 1-aminocyclopropane-1-carboxylic acid reversed the phenotype of enhanced LR number in TaWRKY51-OE Arabidopsis lines, and overexpression of TaWRKY51 in the ethylene-overproducing mutant eto1-1 rescued its LR defect phenotype. In addition, genetic evidence demonstrates that TaWRKY51-regulated LR formation is also dependent on ethylene and auxin signaling pathways. Our findings reveal a molecular genetic mechanism by which a WRKY gene coordinates ethylene production and LR formation in wheat.
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Affiliation(s)
- Zhaorong Hu
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Rui Wang
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Mei Zheng
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Xingbei Liu
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Fei Meng
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Hualing Wu
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Yingyin Yao
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Mingming Xin
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Huiru Peng
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Zhongfu Ni
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
| | - Qixin Sun
- State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization (MOE) and Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, 100193, China
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Cai J, Qin G, Chen T, Tian S. The mode of action of remorin1 in regulating fruit ripening at transcriptional and post-transcriptional levels. THE NEW PHYTOLOGIST 2018; 219:1406-1420. [PMID: 29978907 DOI: 10.1111/nph.15264] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 05/08/2018] [Indexed: 05/24/2023]
Abstract
Remorins are plant-specific and plasma membrane-associated proteins that display a variety of functions in plant growth, development, biotic and abiotic stresses, and signal transduction. However, little information is available for understanding their role in fruit ripening. Here, remorin 1 (SlREM1) is cloned from tomato and its localization is examined by co-localization analysis and immunoblotting. Functions of SlREM1 in fruit ripening are characterized based on gene expression, co-immunoprecipitation coupled with mass spectroscopy and split luciferase complementation imaging assays in SlREM1 overexpression and RNA interference (RNAi) lines. The results indicate that SlREM1 is localized at the plasma membrane. Overexpression of SlREM1 in tomato stimulates fruit ripening with an increase in ethylene production and lycopene accumulation as compared to the wild-type. Consistently, these genes involved in ethylene and lycopene biosynthesis and ripening regulators also are upregulated in SlREM1 overexpression lines. SlREM1 can interact with ethylene biosynthesis proteins SAM1, ACO1 and ACS2 and is degraded by ubiquitin-mediated proteolysis. Our findings reveal that SlREM1 serves as a positive regulator of fruit ripening and provide novel cues for understanding of the molecular regulation network of fruit ripening.
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Affiliation(s)
- Jianghua Cai
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Guozheng Qin
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, 100093, China
- Key Laboratory of Post-Harvest Handing of Fruits, Ministry of Agriculture, Beijing, 100093, China
| | - Tong Chen
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, 100093, China
- Key Laboratory of Post-Harvest Handing of Fruits, Ministry of Agriculture, Beijing, 100093, China
| | - Shiping Tian
- Key Laboratory of Plant Resources, Institute of Botany, The Chinese Academy of Sciences, Beijing, 100093, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Key Laboratory of Post-Harvest Handing of Fruits, Ministry of Agriculture, Beijing, 100093, China
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50
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Zhang L, Zhu M, Ren L, Li A, Chen G, Hu Z. The SlFSR gene controls fruit shelf-life in tomato. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:2897-2909. [PMID: 29635354 PMCID: PMC5972576 DOI: 10.1093/jxb/ery116] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 03/23/2018] [Indexed: 05/29/2023]
Abstract
Fruit ripening represents a process that changes flavor and appearance and also a process that dramatically increases fruit softening. Fruit softening and textural variations mainly result from disruptions to the cell walls of the fruit throughout ripening, but the exact mechanisms and specific modifications of the cell wall remain unclear. Plant-specific GRAS proteins play a critical role in development and growth. To date, few GRAS genes have been functionally categorized in tomato. The expression of a novel GRAS gene described in this study and designated as SlFSR (fruit shelf-life regulator) specifically increased during fruit ripening, but was significantly decreased in the tomato mutant rin (ripening inhibitor). RNAi repression of SlFSR resulted in reduced expression of multiple cell wall modification-related genes, decreased the activities of PG (polygalacturonase), TBG (tomato β-galactosidase), CEL (cellulase), and XYL (β-D-xylosidase), and significantly prolonged fruit shelf-life. Furthermore, overexpression of SlFSR in mutant rin gave rise to up-regulated expression of multiple cell wall modification-related genes, such as PG, TBG4, CEL2, XYL1, PL, PE, MAN1, EXP1, and XTH5, and significantly shortened the fruit shelf-life. These findings reveal some of the genetic mechanisms underlying fruit cell wall metabolism and suggest that the SlFSR gene is another potential biotechnological target for the control of tomato fruit shelf-life.
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Affiliation(s)
- Lincheng Zhang
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College, Chongqing University, Chongqing, China
| | - Mingku Zhu
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College, Chongqing University, Chongqing, China
| | - Lijun Ren
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College, Chongqing University, Chongqing, China
| | - Anzhou Li
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College, Chongqing University, Chongqing, China
| | - Guoping Chen
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College, Chongqing University, Chongqing, China
| | - Zongli Hu
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College, Chongqing University, Chongqing, China
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