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Ou X, Sun L, Chen Y, Zhao Z, Jian W. Characteristics of NAC transcription factors in Solanaceae crops and their roles in responding to abiotic and biotic stresses. Biochem Biophys Res Commun 2024; 709:149840. [PMID: 38564941 DOI: 10.1016/j.bbrc.2024.149840] [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: 01/18/2024] [Revised: 03/23/2024] [Accepted: 03/26/2024] [Indexed: 04/04/2024]
Abstract
As one of the largest transcription factor (TF) families in plants, the NAC (NAM, ATAF1/2, and CUC2) family plays important roles in response pathways to various abiotic and biotic stresses, such as drought, high salinity, low temperature, and pathogen infection. Although, there are a number of reviews on the involvement of NAC TF in plant responses to biotic and abiotic stresses, most of them are focused on the model plants Arabidopsis thaliana and Oryza sativa, and there is a lack of systematic evaluation of specific species. Solanaceae, the world's third most significant cash crop, has been seriously affected by environmental disturbances in recent years in terms of yield and quality, posing a severe threat to global food security. This review focuses on the functional roles of NAC transcription factors in response to external stresses involved in five important Solanaceae crops: tomato, potato, pepper, eggplant and tobacco, and analyzes the affinities between them. It will provide resources for stress-resistant breeding of Solanaceae crops using transgenic technology.
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Affiliation(s)
- Xiaogang Ou
- Key Laboratory of Plant Environmental Adaptation Biology of Chongqing, College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Lixinyu Sun
- Key Laboratory of Plant Environmental Adaptation Biology of Chongqing, College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Yu Chen
- Key Laboratory of Plant Environmental Adaptation Biology of Chongqing, College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Zhengwu Zhao
- Key Laboratory of Plant Environmental Adaptation Biology of Chongqing, College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Wei Jian
- Key Laboratory of Plant Environmental Adaptation Biology of Chongqing, College of Life Sciences, Chongqing Normal University, Chongqing 401331, China.
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Gao S, Xu J, Song W, Dong J, Xie L, Xu B. Overexpression of BnMYBL2-1 improves plant drought tolerance via the ABA-dependent pathway. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108293. [PMID: 38181638 DOI: 10.1016/j.plaphy.2023.108293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 11/23/2023] [Accepted: 12/18/2023] [Indexed: 01/07/2024]
Abstract
Drought stress is a major environmental challenge that poses considerable threats to crop survival and growth. Previous research has indicated anthocyanins play a crucial role in alleviating oxidative damage, photoprotection, membrane stabilization, and water retention under drought stress. However, the presence of MYBL2 (MYELOBBLASTOSIS LIKE 2), an R3-MYB transcription factor (TF) which known to suppress anthocyanin biosynthesis. In this study, four BnMYBL2 members were cloned from Brassica napus L, and BnMYBL2-1 was overexpressed in Triticum aestivum L (No BnMYBL2 homologous gene was detected in wheat). Subsequently, the transgenic wheat lines were treated with drought, ABA and anthocyanin. Results showed that transgenic lines exhibited greater drought tolerance compared to the wild-type (WT), characterized by improved leaf water content (LWC), elevated levels of soluble sugars and chlorophyll, and increased antioxidant enzyme activity. Notably, transgenic lines also exhibited significant upregulation in abscisic acid (ABA) content, along with the transcriptional levels of key enzymes involved in ABA signalling under drought. Results also demonstrated that BnMYBL2-1 promoted the accumulation of ABA and anthocyanins in wheat. Overall, the study highlights the positive role of BnMYBL2-1 in enhancing crop drought tolerance through ABA signalling and establishes its close association with anthocyanin biosynthesis. These findings offer valuable insights for the development of drought-resistant crop varieties and enhance the understanding of the molecular mechanisms underlying plant responses to drought stress.
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Affiliation(s)
- Shaofan Gao
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Hubei, 434022, China
| | - Jinsong Xu
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Hubei, 434022, China; College of Agriculture, Yangtze University, Hubei, 434022, China
| | - Wei Song
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Henan, 467036, China
| | - Jing Dong
- Hubei Key Laboratory of Food Crop Germplasm and Genetic Improvement, Hubei, 430072, China
| | - Lingli Xie
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Hubei, 434022, China; College of Agriculture, Yangtze University, Hubei, 434022, China.
| | - Benbo Xu
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Hubei Key Laboratory of Waterlogging Disaster and Agricultural Use of Wetland, Yangtze University, Hubei, 434022, China; College of Agriculture, Yangtze University, Hubei, 434022, China.
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Peng Y, Cao H, Cui L, Wang Y, Wei L, Geng S, Yang L, Huang Y, Bie Z. CmoNAC1 in pumpkin rootstocks improves salt tolerance of grafted cucumbers by binding to the promoters of CmoRBOHD1, CmoNCED6, CmoAKT1;2 and CmoHKT1;1 to regulate H 2O 2, ABA signaling and K +/Na + homeostasis. HORTICULTURE RESEARCH 2023; 10:uhad157. [PMID: 37719275 PMCID: PMC10500151 DOI: 10.1093/hr/uhad157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 08/04/2023] [Indexed: 09/19/2023]
Abstract
The NAC transcription factor is a type of plant-specific transcription factor that can regulate plant salt tolerance, but the underlying mechanism is unclear in grafted vegetables. H2O2 and ABA in pumpkin rootstocks can be transported to cucumber scion leaves, promoting stomatal closure to improve salt tolerance of grafted cucumbers. Despite these observations, the regulatory mechanism is unknown. Here, our research revealed that CmoNAC1 is a key transcription factor that regulates H2O2 and ABA signaling in pumpkin roots under salt stress. The function of CmoNAC1 was analyzed using root transformation and RNA-seq, and we found that pumpkin CmoNAC1 promoted the production of H2O2 and ABA via CmoRBOHD1 and CmoNCED6, respectively, and regulated K+/Na+ homeostasis via CmoAKT1;2, CmoHKT1;1, and CmoSOS1 to improve salt tolerance of grafted cucumbers. Root knockout of CmoNAC1 resulted in a significant decrease in H2O2 (52.9% and 32.1%) and ABA (21.8% and 42.7%) content and K+/Na+ ratio (81.5% and 56.3%) in leaf and roots of grafted cucumber, respectively, while overexpression showed the opposite effect. The root transformation experiment showed that CmoNCED6 could improve salt tolerance of grafted cucumbers by regulating ABA production and K+/Na+ homeostasis under salt stress. Finally, we found that CmoNAC1 bound to the promoters of CmoRBOHD1, CmoNCED6, CmoAKT1;2, and CmoHKT1;1 using yeast one-hybrid, luciferase, and electrophoretic mobility shift assays. In conclusion, pumpkin CmoNAC1 not only binds to the promoters of CmoRBOHD1 and CmoNCED6 to regulate the production of H2O2 and ABA signals in roots, but also binds to the promoters of CmoAKT1;2 and CmoHKT1;1 to increase the K+/Na+ ratio, thus improving salt tolerance of grafted cucumbers.
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Affiliation(s)
- Yuquan Peng
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Haishun Cao
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
- Institute of Facility Agriculture, Guangdong Academy of Agricultural Sciences, 510640 Guangzhou, China
| | - Lvjun Cui
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Ying Wang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Lanxing Wei
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Shouyu Geng
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Li Yang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Yuan Huang
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
| | - Zhilong Bie
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops/College of Horticulture and Forestry Sciences, Huazhong Agricultural University, 430070 Wuhan, China
- Hubei Hongshan Laboratory, 430070 Wuhan, China
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Wang L, Li T, Liu N, Liu X. Identification of tomato AHL gene families and functional analysis their roles in fruit development and abiotic stress response. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 202:107931. [PMID: 37557017 DOI: 10.1016/j.plaphy.2023.107931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 08/11/2023]
Abstract
The AT-HOOK MOTIF CONTAINING NUCLEAR LOCALIZED (AHL) transcription factors play important roles in regulating plant development and stress response. However, the AHL family genes have not been identified in tomato (Solanum lycopersicum) and their biological functions have not been elucidated. In this work, the gene families encoding AHLs were identified in tomato genome, and their physical and chemical characteristics, subcellular localization, gene expression profiles during fruit development and upon abiotic stimulus were investigated. Overall, a total of 18 AHL members were identified in tomato genome, phylogenetic analysis classified these SlAHL members into two clades, clade A (SlAHL1-8) and clade B (SlAHL9-18). Six clade A SlAHLs were detected to be subcellular localized in the nucleus. The transcripts of the representative clade A SlAHLs predominantly accumulated 10 days post anthesis (dpa) in tomato fruits, revealing an involvement of these SlAHLs in early fruit development. Furthermore, compared with clade B members, the transcripts of the clade A SlAHLs were more responsive to heat, drought, cold and salt stresses, suggesting that these SlAHLs may play major roles in response to abiotic stresses. Moreover, overexpression of SlAHL1 and SlAHL7 in Arabidopsis increased the sensitivity to ABA during seed germination and seedling stages. Overexpression of SlAHL1 inhibited seed germination while increased primary root elongation upon salt and drought stresses. Together, our work suggested that the clade A SlAHL genes may play an important role in response to abiotic stresses, which paving the way for future functional analysis of AHL genes in tomato and other Solanaceae species.
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Affiliation(s)
- Liyuan Wang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Tingting Li
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Nan Liu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Xuncheng Liu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Chinese Academy of Sciences, Guangzhou, 510650, China.
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Wang B, Wang J, Yang T, Wang J, Dai Q, Zhang F, Xi R, Yu Q, Li N. The transcriptional regulatory network of hormones and genes under salt stress in tomato plants ( Solanum lycopersicum L.). FRONTIERS IN PLANT SCIENCE 2023; 14:1115593. [PMID: 36814758 PMCID: PMC9939653 DOI: 10.3389/fpls.2023.1115593] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 01/12/2023] [Indexed: 06/18/2023]
Abstract
Salt stress has become one of the main limiting factors affecting the normal growth and development of tomatoes as well as fruit quality and yields. To further reveal the regulatory relationships between tomato hormones under salt stress, the interaction between hormones and TF and the genome-wide gene interaction network were analyzed and constructed. After salt treatment, the levels of ABA, SA, and JA were significantly increased, the levels of GA were decreased, and IAA and tZ showed a trend of first increasing and then decreasing. The expression patterns of hormone biosynthesis and signal transduction related genes were analyzed based on RNA-seq analysis, the co-expression network of hormones and genome-wide co-expression networks were constructed using weighted gene co-expression network analysis (WGCNA). The expression patterns of specific transcription factors under salt stress were also systematically analyzed and identified 20 hormone-related candidate genes associated with salt stress. In conclusion, we first revealed the relationship between hormones and genes in tomatoes under salt stress based on hormone and transcriptome expression profiles and constructed a gene regulatory network. A transcriptional regulation model of tomato consisted of six types of hormones was also proposed. Our study provided valuable insights into the molecular mechanisms regulating salt tolerance in tomatoes.
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Affiliation(s)
- Baike Wang
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang, China
| | - Juan Wang
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang, China
| | - Tao Yang
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang, China
| | - Jinxin Wang
- Research Institute of Soil, Fertilizer and Agricultural Water Conservation, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang, China
| | - Qi Dai
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang, China
| | - Fulin Zhang
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang, China
- College of Horticulture, Xinjiang Agricultural University, Urumqi, Xinjiang, China
| | - Rui Xi
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang, China
- College of Horticulture, Xinjiang Agricultural University, Urumqi, Xinjiang, China
| | - Qinghui Yu
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang, China
| | - Ning Li
- Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang, China
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Hussain MA, Luo D, Zeng L, Ding X, Cheng Y, Zou X, Lv Y, Lu G. Genome-wide transcriptome profiling revealed biological macromolecules respond to low temperature stress in Brassica napus L. FRONTIERS IN PLANT SCIENCE 2022; 13:1050995. [PMID: 36452101 PMCID: PMC9702069 DOI: 10.3389/fpls.2022.1050995] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 10/14/2022] [Indexed: 06/12/2023]
Abstract
Brassica napus L. (B. napus) is a vital oilseed crop cultivated worldwide; low temperature (LT) is one of the major stress factors that limit its growth, development, distribution, and production. Even though processes have been developed to characterize LT-responsive genes, only limited studies have exploited the molecular response mechanisms in B. napus. Here the transcriptome data of an elite B. napus variety with LT adaptability was acquired and applied to investigate the gene expression profiles of B. napus in response to LT stress. The bioinformatics study revealed a total of 79,061 unigenes, of which 3,703 genes were differentially expressed genes (DEGs), with 2,129 upregulated and 1,574 downregulated. The Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analysis pinpointed that the DEGs were enriched in LT-stress-responsive biological functions and metabolic pathways, which included sugar metabolism, antioxidant defense system, plant hormone signal transduction, and photosynthesis. Moreover, a group of LT-stress-responsive transcription factors with divergent expression patterns under LT was summarized. A combined protein interaction suggested that a complex interconnected regulatory network existed in all detected pathways. RNA-seq data was verified using real-time quantitative polymerase chain reaction analysis. Based on these findings, we presented a hypothesis model illustrating valuable information for understanding the LT response mechanisms in B. napus.
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Affiliation(s)
- Muhammad Azhar Hussain
- Key Laboratory of Biology and Genetic Improvement of Oil Crops Research Institute, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China
| | - Dan Luo
- Key Laboratory of Biology and Genetic Improvement of Oil Crops Research Institute, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China
| | - Liu Zeng
- Key Laboratory of Biology and Genetic Improvement of Oil Crops Research Institute, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China
| | - Xiaoyu Ding
- Key Laboratory of Biology and Genetic Improvement of Oil Crops Research Institute, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China
| | - Yong Cheng
- Key Laboratory of Biology and Genetic Improvement of Oil Crops Research Institute, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China
| | - Xiling Zou
- Key Laboratory of Biology and Genetic Improvement of Oil Crops Research Institute, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China
| | - Yan Lv
- Key Laboratory of Biology and Genetic Improvement of Oil Crops Research Institute, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China
| | - Guangyuan Lu
- School of Biology and Food Engineering, Guangdong University of Petrochemical Technology, Maoming, China
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