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Teng D, Liu D, Khashaveh A, Lv B, Sun P, Geng T, Cui H, Wang Y, Zhang Y. Engineering DMNT emission in cotton enhances direct and indirect defense against mirid bugs. J Adv Res 2024:S2090-1232(24)00212-1. [PMID: 38806097 DOI: 10.1016/j.jare.2024.05.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 05/14/2024] [Accepted: 05/21/2024] [Indexed: 05/30/2024] Open
Abstract
INTRODUCTION As an important herbivore-induced plant volatile, (3E)-4,8-dimethyl-1,3,7-nonatriene (DMNT) is known for its defensive role against multiple insect pests, including attracting natural enemies. A terpene synthase (GhTPS14) and two cytochrome P450 (GhCYP82L1, GhCYP82L2) enzymes are involved in the de novo synthesis of DMNT in cotton. We conducted a study to test the potential of manipulating DMNT-synthesizing enzymes to enhance plant resistance to insects. OBJECTIVES To manipulate DMNT emissions in cotton and generate cotton lines with increased resistance to mirid bug Apolygus lucorum. METHODS Biosynthesis and emission of DMNT by cotton plants were altered using CRISPR/Cas9 and overexpression approaches. Dynamic headspace sampling and GC-MS analysis were used to collect, identify and quantify volatiles. The attractiveness and suitability of cotton lines against mirid bug and its parasitoid Peristenus spretus were evaluated through various assays. RESULTS No DMNT emission was detected in knockout CAS-L1L2 line, where both GhCYP82L1 and GhCYP82L2 were knocked out. In contrast, gene-overexpressed lines released higher amounts of DMNT when infested by A. lucorum. At the flowering stage, L114 (co-overexpressing GhCYP82L1 and GhTPS14) emitted 10-15-fold higher amounts than controls. DMNT emission in overexpressed transgenic lines could be triggered by methyl jasmonate (MeJA) treatment. Apolygus lucorum and its parasitoid were far less attracted to the double edited CAS-L1L2 plants, however, co-overexpressed line L114 significantly attracted bugs and female wasps. A high dose of DMNT, comparable to the emission of L114, significantly inhibited the growth of A. lucorum, and further resulted in higher mortalities. CONCLUSION Turning down DMNT emission attenuated the behavioral preferences of A. lucorum to cotton. Genetically modified cotton plants with elevated DMNT emission not only recruited parasitoids to enhance indirect defense, but also formed an ecological trap to kill the bugs. Therefore, manipulation of DMNT biosynthesis and emission in plants presents a promising strategy for controlling mirid bugs.
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Affiliation(s)
- Dong Teng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Danfeng Liu
- Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology and Centre for Invasion Biology, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China
| | - Adel Khashaveh
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Beibei Lv
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Institute of Cotton Research, Shanxi Agricultural University, Yuncheng 044000, China
| | - Peiyao Sun
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Ting Geng
- National Plant Protection Scientific Observation and Experiment Station, Langfang 065000, China
| | - Hongzhi Cui
- Biocentury Transgene (China) Co. Ltd., Shenzhen 518117, China
| | - Yi Wang
- Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology and Centre for Invasion Biology, Institute of Biodiversity, School of Ecology and Environmental Science, Yunnan University, Kunming 650504, China
| | - Yongjun Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
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Wang Y, Jiang W, Li C, Wang Z, Lu C, Cheng J, Wei S, Yang J, Yang Q. Integrated transcriptomic and metabolomic analyses elucidate the mechanism of flavonoid biosynthesis in the regulation of mulberry seed germination under salt stress. BMC PLANT BIOLOGY 2024; 24:132. [PMID: 38383312 PMCID: PMC10880279 DOI: 10.1186/s12870-024-04804-3] [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: 01/10/2024] [Accepted: 02/06/2024] [Indexed: 02/23/2024]
Abstract
Seed propagation is the main method of mulberry expansion in China, an important economic forest species. However, seed germination is the most sensitive stage to various abiotic stresses, especially salinity stress. To reveal the molecular regulatory mechanism of mulberry seed germination under salt stress, flavonoid metabolomics and transcriptomics analyses were performed on mulberry seeds germinated under 50 and 100 mmol/L NaCl stress. Analysis of the flavonoid metabolome revealed that a total of 145 differential flavonoid metabolites (DFMs) were classified into 9 groups, 40 flavonols, 32 flavones, 16 chalcones and 14 flavanones. Among them, 61.4% (89) of the DFMs accumulated continuously with increasing salt concentration, reaching the highest level at a 100 mmol/L salt concentration; these DFMs included quercetin-3-O-glucoside (isoquercitrin), kaempferol (3,5,7,4'-tetrahydroxyflavone), quercetin-7-O-glucoside, taxifolin (dihydroquercetin) and apigenin (4',5,7-trihydroxyflavone), indicating that these flavonoids may be key metabolites involved in the response to salt stress. Transcriptional analysis identified a total of 3055 differentially expressed genes (DEGs), most of which were enriched in flavonoid biosynthesis (ko00941), phenylpropanoid biosynthesis (ko00940) and biosynthesis of secondary metabolites (ko01110). Combined analysis of flavonoid metabolomic and transcriptomic data indicated that phenylalanine ammonia-lyase (PAL), 4-coumarate-CoA ligase (4CL), chalcone synthase (CHS), flavonol synthase (FLS), bifunctional dihydroflavonol 4-reductase/flavanone 4-reductase (DFR) and anthocyanidin reductase (ANR) were the key genes involved in flavonoid accumulation during mulberry seed germination under 50 and 100 mmol/L NaCl stress. In addition, three transcription factors, MYB, bHLH and NAC, were involved in the regulation of flavonoid accumulation under salt stress. The results of quantitative real-time PCR (qRT‒PCR) validation showed that the expression levels of 11 DEGs, including 7 genes involved in flavonoid biosynthesis, under different salt concentrations were consistent with the transcriptomic data, and parallel reaction monitoring (PRM) results showed that the expression levels of 6 key enzymes (proteins) involved in flavonoid synthesis were consistent with the accumulation of flavonoids. This study provides a new perspective for investigating the regulatory role of flavonoid biosynthesis in the regulation of mulberry seed germination under salt stress at different concentrations.
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Affiliation(s)
- Yi Wang
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China.
| | - Wei Jiang
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Chenlei Li
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Zhenjiang Wang
- Sericultural & Agri-Food Research Institute Guangdong Academy of Agricultural Sciences, Guangzhou, 510610, China
| | - Can Lu
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Junsen Cheng
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Shanglin Wei
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Jiasong Yang
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
| | - Qiang Yang
- College of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, Guangdong, China
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Wang Q, Hu F, Yao Z, Zhao X, Chu G, Ye J. Comprehensive genomic characterisation of the NAC transcription factor family and its response to drought stress in Eucommia ulmoides. PeerJ 2023; 11:e16298. [PMID: 37901460 PMCID: PMC10601904 DOI: 10.7717/peerj.16298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 09/23/2023] [Indexed: 10/31/2023] Open
Abstract
The NAC transcription factor family enhances plant adaptation to environmental challenges by participating in signalling pathways triggered by abiotic stressors and hormonal cues. We identified 69 NAC genes in the Eucommia ulmoides genome and renamed them according to their chromosomal distribution. These EuNAC proteins were clustered into 13 sub-families and distributed on 16 chromosomes and 2 scaffolds. The gene structures suggested that the number of exons varied from two to eight among these EuNACs, with a multitude of them containing three exons. Duplicated events resulted in a large gene family; 12 and four pairs of EuNACs were the result of segmental and tandem duplicates, respectively. The drought-stress response pattern of 12 putative EuNACs was observed under drought treatment, revealing that these EuNACs could play crucial roles in mitigating the effects of drought stress responses and serve as promising candidate genes for genetic engineering aimed at enhancing the drought stress tolerance of E. ulmoides. This study provides insight into the evolution, diversity, and characterisation of NAC genes in E. ulmoides and will be helpful for future characterisation of putative EuNACs associated with water deficit.
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Affiliation(s)
- Qi Wang
- Laboratory of Forestry Department, Agricultural College, Shihezi University, Shihezi, China
| | - FengCheng Hu
- Lveyang County Forest Tree Seedling Workstation, Forestry Bureau of Lveyang County, Lveyang, China
| | - ZhaoQun Yao
- Laboratory of Plant Protection Department, Agricultural College, Shihezi University, Shihezi, China
| | - XinFeng Zhao
- Lveyang County Forest Tree Seedling Workstation, Forestry Bureau of Lveyang County, Lveyang, China
| | - GuangMing Chu
- Laboratory of Forestry Department, Agricultural College, Shihezi University, Shihezi, China
| | - Jing Ye
- Laboratory of Forestry Department, Agricultural College, Shihezi University, Shihezi, China
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Gao Q, Li X, Xiang C, Li R, Xie H, Liu J, Li X, Zhang G, Yang S, Liang Y, Zhai C, Zhao Y. EbbHLH80 Enhances Salt Responses by Up-Regulating Flavonoid Accumulation and Modulating ROS Levels. Int J Mol Sci 2023; 24:11080. [PMID: 37446256 DOI: 10.3390/ijms241311080] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/24/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
bHLH transcription factors are involved in multiple aspects of plant biology, such as the response to abiotic stress. Erigeron breviscapus is a composite plant, and its rich flavonoids have strong preventive and therapeutic effects on cardio cerebral vascular disease. EbbHLH80, a gene from E. breviscapus that positively regulates flavonoid synthesis, was previously characterized. However, it is unclear whether EbbHLH80 increases flavonoid accumulation, which affects salt tolerance. The function of EbbHLH80 in transgenic tobacco seeds was identified by phylogenetic analysis and metabolome-transcriptome analysis. We investigated the role of EbbHLH80 in salt stress response. Our results showed that the expression of EbbHLH80 increased following salt treatment. Integrating the metabolome and transcriptome analysis of EbbHLH80-OE and Yunyan 87 (WT) seeds, we identified several genes and metabolites related to flavonoid biosynthesis and salt stress. Moreover, EbbHLH80-OE plants displayed higher salt tolerance than wild-type plants during seed germination and seedling growth. After salt treatment, transgenic tobacco had significantly lower levels of reactive oxygen species (ROS) than WT, with enhanced levels of antioxidant enzyme expression. Altogether, our results demonstrated that EbbHLH80 might be a positive regulator, promoting salt tolerance by modulating ROS scavenging and increasing stress-responsive genes.
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Affiliation(s)
- Qingqing Gao
- National-Local Joint Engineering Research Center on Gemplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming 650201, China
| | - Xia Li
- National-Local Joint Engineering Research Center on Gemplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming 650201, China
| | - Chunfan Xiang
- National-Local Joint Engineering Research Center on Gemplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming 650201, China
| | - Ruolan Li
- National-Local Joint Engineering Research Center on Gemplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
| | - Hongchun Xie
- National-Local Joint Engineering Research Center on Gemplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
| | - Jia Liu
- National-Local Joint Engineering Research Center on Gemplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
| | - Xiaoning Li
- National-Local Joint Engineering Research Center on Gemplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
| | - Guanghui Zhang
- National-Local Joint Engineering Research Center on Gemplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming 650201, China
| | - Shengchao Yang
- National-Local Joint Engineering Research Center on Gemplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
| | - Yanli Liang
- National-Local Joint Engineering Research Center on Gemplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming 650201, China
| | - Chenxi Zhai
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14850, USA
| | - Yan Zhao
- National-Local Joint Engineering Research Center on Gemplasm Innovation & Utilization of Chinese Medicinal Materials in Southwest, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China
- College of Agronomy & Biotechnology, Yunnan Agricultural University, Kunming 650201, China
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Li J, Guo W, Zhao J, Meng H, Yang Y, Zheng G, Yuan W. Transcriptional Regulation of the Acer truncatum B. Response to Drought and the Contribution of AtruNAC36 to Drought Tolerance. Antioxidants (Basel) 2023; 12:1339. [PMID: 37507879 PMCID: PMC10376542 DOI: 10.3390/antiox12071339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/14/2023] [Accepted: 06/21/2023] [Indexed: 07/30/2023] Open
Abstract
Drought stress is one of the major environmental factors severely restricting plant development and productivity. Acer truncatum B, which is an economically important tree species, is highly tolerant to drought conditions, but the underlying molecular regulatory mechanisms remain relatively unknown. In this study, A. truncatum seedlings underwent a drought treatment (water withheld for 0, 3, 7, and 12 days), after which they were re-watered for 5 days. Physiological indices were measured and a transcriptome sequencing analysis was performed to reveal drought response-related regulatory mechanisms. In comparison to the control, the drought treatment caused a significant increase in antioxidant enzyme activities, with levels rising up to seven times, and relative electrical conductivity from 14.5% to 78.4%, but the relative water content decreased from 88.3% to 23.4%; these indices recovered somewhat after the 5-day re-watering period. The RNA sequencing analysis identified 9126 differentially expressed genes (DEGs), which were primarily involved with abscisic acid responses, and mitogen-activated protein kinase signaling. These DEGs included 483 (5.29%) transcription factor genes from 53 families, including ERF, MYB, and NAC. A co-expression network analysis was conducted and three important modules were analyzed to identify hub genes, one of which (AtruNAC36) was examined to clarify its function. The AtruNAC36 protein was localized to the nucleus and had a C-terminal transactivation domain. Moreover, it bounded specifically to the NACRS element. The overexpression of AtruNAC36 in Arabidopsis thaliana resulted in increased drought tolerance by enhancing antioxidant enzyme activities. These findings provide important insights into the transcriptional regulation mediating the A. truncatum response to drought. Furthermore, AtruNAC36 may be relevant for breeding forest trees resistant to drought stress.
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Affiliation(s)
- Jianbo Li
- Experimental Centre of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China
- National State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, China
| | - Wei Guo
- Taishan Academy of Forestry Sciences, Tai'an 271000, China
| | - Jinna Zhao
- Experimental Centre of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China
| | - Huijing Meng
- Experimental Centre of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China
| | - Yanfei Yang
- Experimental Centre of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China
| | - Guangshun Zheng
- Experimental Centre of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China
| | - Weijie Yuan
- Experimental Centre of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China
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Liu ZY, Han YT, Wang CY, Lei XJ, Wang YY, Dong WF, Xie QJ, Fu YJ, Gao CQ. The growth-regulating factor PdbGRF1 positively regulates the salt stress response in Populus davidiana × P. bolleana. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 326:111502. [PMID: 36252856 DOI: 10.1016/j.plantsci.2022.111502] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 08/26/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Growth-regulating factor (GRF) is a transcription factor unique to plants that plays a crucial role in the growth, development and stress adaptation of plants. However, information on the GRFs related to salt stress in Populus davidiana × P. bolleana is lacking. In this study, we characterized the activity of PdbGRF1 in transgenic Populus davidiana × P. bolleana under salt stress. qRTPCR analyses showed that PdbGRF1 was highly expressed in young leaves and that the pattern of PdbGRF1 expression was significantly changed at most time points under salt stress, which suggests that PdbGRF1 expression may be related to the salt stress response. Moreover, PdbGRF1 overexpression enhanced tolerance to salt stress. A physiological parameter analysis showed that the overexpression of PdbGRF1 significantly decreased the contents of hydrogen peroxide (H2O2) and malondialdehyde (MDA) and increased the activities of antioxidant enzymes (SOD and POD) and the proline content. A molecular analysis showed that PdbGRF1 regulated the expression of PdbPOD17 and PdbAKT1 by binding to the DRE ('A/GCCGAC') in their respective promoters. Together, our results demonstrate that the binding of PdbGRF1 to DRE regulates genes related to stress tolerance and activates the associated physiological pathways, and these effects increase the ROS scavenging ability, reduce the degree of damage to the plasma membrane and ultimately enhance the salt stress response in Populus davidiana × P. bolleana.
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Affiliation(s)
- Zhong-Yuan Liu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China
| | - Ya-Ting Han
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Chun-Yao Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Xiao-Jin Lei
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Yuan-Yuan Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Wen-Fang Dong
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Qing-Jun Xie
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China
| | - Yu-Jie Fu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, China; College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China.
| | - Cai-Qiu Gao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China.
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Meng L, Chen S, Li D, Huang M, Zhu S. Genome-Wide Characterization and Evolutionary Expansion of Poplar NAC Transcription Factors and Their Tissue-Specific Expression Profiles under Drought. Int J Mol Sci 2022; 24:ijms24010253. [PMID: 36613699 PMCID: PMC9820422 DOI: 10.3390/ijms24010253] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
The NAC (NAM, ATAF1/2 and CUC2) is a large gene family of plant-specific transcription factors that play a pivotal role in various physiological processes and abiotic stresses. Due to the lack of genome-wide characterization, intraspecific and interspecific synteny, and drought-responsive expression pattern of NAC genes in poplar, the functional characterization of drought-related NAC genes have been scarcely reported in Populus species. Here, we identified a total of 170 NAC domain-containing genes in the P. trichocarpa genome, 169 of which were unevenly distributed on its nineteen chromosomes. These NAC genes were phylogenetically divided into twenty subgroups, some of which exhibited a similar pattern of exon-intron architecture. The synteny and Ka/Ks analysis indicated that the expansion of NAC genes in poplar was mainly due to gene duplication events occurring before and after the divergence of Populus and Salix. Ten PdNAC (P. deltoids × P. euramericana cv.'Nanlin895') genes were randomly selected and cloned. Their drought-responsive expression profiles showed a tissue-specific pattern. The transcription factor PdNAC013 was verified to be localized in the nucleus. Our research results provide genomic information for the expansion of NAC genes in the poplar genome, and for further characterizing putative poplar NAC genes associated with water-deficit.
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Affiliation(s)
- Lu Meng
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Siyuan Chen
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Dawei Li
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Minren Huang
- Key Laboratory of Forest Genetics and Biotechnology, Ministry of Education of China, Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
| | - Sheng Zhu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
- Key Laboratory of Forest Genetics and Biotechnology, Ministry of Education of China, Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
- Correspondence: or
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Overexpression of PagERF072 from Poplar Improves Salt Tolerance. Int J Mol Sci 2022; 23:ijms231810707. [PMID: 36142609 PMCID: PMC9502824 DOI: 10.3390/ijms231810707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 09/05/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Extreme environments, especially drought and high salt conditions, seriously affect plant growth and development. Ethylene-responsive factor (ERF) transcription factors play an important role in salt stress response. In this study, a significantly upregulated ERF gene was identified in 84K (Populus alba × P. glandulosa), which was named PagERF072. PagERF072 was confirmed to be a nuclear-localized protein. The results of yeast two-hybrid (Y2H) assay showed that PagERF072 protein exhibited no self-activating activity, and yeast one-hybrid (Y1H) demonstrated that PagERF072 could specifically bind to GCC-box element. Under salt stress, the transgenic poplar lines overexpressing PagERF072 showed improved salt tolerance. The activities of peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT) in transgenic poplars were significantly increased relative to those of wild-type (WT) plants, whereas malondialdehyde (MDA) content showed an opposite trend. In addition, reactive oxygen species (ROS) was significantly reduced, and the expression levels of POD- and SOD-related genes were significantly increased in transgenic poplars under salt stress compared with WT. All results indicate that overexpression of the PagERF072 gene can improve the salt tolerance of transgenic poplars.
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Zhao X, Wu T, Guo S, Hu J, Zhan Y. Ectopic Expression of AeNAC83, a NAC Transcription Factor from Abelmoschus esculentus, Inhibits Growth and Confers Tolerance to Salt Stress in Arabidopsis. Int J Mol Sci 2022; 23:ijms231710182. [PMID: 36077574 PMCID: PMC9456028 DOI: 10.3390/ijms231710182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/27/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
NAC transcription factors play crucial roles in plant growth, development and stress responses. Previously, we preliminarily identified that the transcription factor AeNAC83 gene was significantly up-regulated under salt stress in okra (Abelmoschus esculentus). Herein, we cloned the nuclear-localized AeNAC83 from okra and identified its possible role in salt stress response and plant growth. The down-regulation of AeNAC83 caused by virus-induced gene silencing enhanced plant sensitivity to salt stress and increased the biomass accumulation of okra seedlings. Meanwhile, AeNAC83-overexpression Arabidopsis lines improved salt tolerance and exhibited many altered phenotypes, including small rosette, short primary roots, and promoted crown roots and root hairs. RNA-seq showed numerous genes at the transcriptional level that changed significantly in the AeNAC83-overexpression transgenic and the wild Arabidopsis with or without NaCl treatment, respectively. The expression of most phenylpropanoid and flavonoid biosynthesis-related genes was largely induced by salt stress. While genes encoding key proteins involved in photosynthesis were almost declined dramatically in AeNAC83-overexpression transgenic plants, and NaCl treatment further resulted in the down-regulation of these genes. Furthermore, DEGs encoding various plant hormone signal pathways were also identified. These results indicate that AeNAC83 is involved in resistance to salt stress and plant growth.
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Lei X, Liu Z, Xie Q, Fang J, Wang C, Li J, Wang C, Gao C. Construction of two regulatory networks related to salt stress and lignocellulosic synthesis under salt stress based on a Populus davidiana × P. bolleana transcriptome analysis. PLANT MOLECULAR BIOLOGY 2022; 109:689-702. [PMID: 35486290 DOI: 10.1007/s11103-022-01267-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
Construction of ML-hGRN for the salt pathway in Populus davidiana × P. bolleana. Construction of ML-hGRN for the lignocellulosic pathway in Populus davidiana × P. bolleana under salt stress. Many woody plants, including Populus davidiana × P. bolleana, have made great contributions to human production and life. High salt is one of the main environmental factors that restricts the growth of poplar. This study found that high salt could induce strong biochemical changes in poplar. To detect the effect of salt treatment on gene expression, 18 libraries were sequenced on the Illumina sequencing platform. The results identified a large number of early differentially expressed genes (DEGs) and a small number of late DEGs, which indicated that most of the salt response genes of poplar were early response genes. In addition, 197 TFs, including NAC, ERF, and other TFs related to salt stress, were differentially expressed during salt treatment, which indicated that these TFs may play an important role in the salt stress response of poplar. Based on the RNA-seq analysis results, multilayered hierarchical gene regulatory networks (ML-hGRNs) of salt stress- and lignocellulosic synthesis-related DEGs were constructed using the GGM algorithm. The lignocellulosic synthesis regulatory network under salt stress revealed that lignocellulosic synthesis might play an important role in the process of salt stress resistance. Furthermore, the NAC family transcription factor PdbNAC83, which was found in the upper layer in both pathways, was selected to verify the accuracy of the ML-hGRNs. DAP-seq showed that the binding site of PdbNAC83 included a "TT(G/A)C(G/T)T" motif, and ChIP-PCR further verified that PdbNAC83 can regulate the promoters of at least six predicted downstream genes (PdbNLP2-2, PdbZFP6, PdbMYB73, PdbC2H2-like, PdbMYB93-1, PdbbHLH094) by binding to the "TT(G/A)C(G/T)T" motif, which indicates that the predicted regulatory network diagram obtained in this study is relatively accurate. In conclusion, a species-specific salt response pathway might exist in poplar, and this finding lays a foundation for further study of the regulatory mechanism of the salt stress response and provides new clues for the use of genetic engineering methods to create high-quality and highly resistant forest germplasms.
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Affiliation(s)
- Xiaojin Lei
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China
| | - Zhongyuan Liu
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China
| | - Qingjun Xie
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China
| | - Jiaru Fang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China
| | - Chunyao Wang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China
| | - Jinghang Li
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China
| | - Chao Wang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China
| | - Caiqiu Gao
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin, 150040, China.
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Chen Z, Peng Z, Liu S, Leng H, Luo J, Wang F, Yi Y, Resco de Dios V, Lucas GR, Yao Y, Gao Y. Overexpression of PeNAC122 gene promotes wood formation and tolerance to osmotic stress in poplars. PHYSIOLOGIA PLANTARUM 2022; 174:e13751. [PMID: 36004736 DOI: 10.1111/ppl.13751] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 06/28/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
Finding the adequate balance between wood formation and abiotic stress resistance is still an important challenge for industrial woody crops. In this study, PeNAC122, a member of the NAC transcription factor (TF) family highly expressed in xylem, was cloned from Populus euphratica. Tissue expression and β-glucuronidase (GUS) staining showed that PeNAC122 was exclusively expressed in phloem fiber and secondary xylem of stems. Subcellular and yeast transactivation assays confirmed that PeNAC122 protein existed in the nucleus and did not have transcriptional activation and inhibitory activity. Overexpression of PeNAC122 poplar lines exhibited reduced plant height, thickened xylem, and accumulated lignin content in stems, and also upregulates the expression of secondary cell wall biosynthetic genes. Moreover, overexpression of PeNAC122 lines displayed more tolerance to PEG6000-induced osmotic stress, with stronger photosynthetic performance, higher antioxidant enzyme activity, and less accumulation of reactive oxygen species in leaves, and higher expression levels of stress response genes DREB2A, RD29, and NCED3. These results indicate that PeNAC122 plays a crucial role in wood formation and abiotic stress tolerance, which, in addition to potential use in improving wood quality, provides further insight into the role of NAC family TFs in balancing wood development and abiotic stress resistance.
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Affiliation(s)
- Zihao Chen
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Zhuoxi Peng
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Siqin Liu
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Haiqin Leng
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Jianxun Luo
- Institute of Forestry, Sichuan Academy of Forestry, Chengdu, People's Republic of China
| | - Fei Wang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Yuanyuan Yi
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Víctor Resco de Dios
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Gutiérrez Rodríguez Lucas
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Yinan Yao
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
| | - Yongfeng Gao
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, People's Republic of China
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12
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Zhang X, Cheng Z, Fan G, Yao W, Li W, Chen S, Jiang T. Functional analysis of PagNAC045 transcription factor that improves salt and ABA tolerance in transgenic tobacco. BMC PLANT BIOLOGY 2022; 22:261. [PMID: 35610568 PMCID: PMC9131654 DOI: 10.1186/s12870-022-03623-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 04/26/2022] [Indexed: 05/16/2023]
Abstract
BACKGROUND Salt stress causes inhibition of plant growth and development, and always leads to an increasing threat to plant agriculture. Transcription factors regulate the expression of various genes for stress response and adaptation. It's crucial to reveal the regulatory mechanisms of transcription factors in the response to salt stress. RESULTS A salt-inducible NAC transcription factor gene PagNAC045 was isolated from Populus alba×P. glandulosa. The PagNAC045 had a high sequence similarity with NAC045 (Potri.007G099400.1) in P. trichocarpa, and they both contained the same conserved motifs 1 and 2, which constitute the highly conserved NAM domain at the N-terminus. Protein-protein interaction (PPI) prediction showed that PagNAC045 potentially interacts with many proteins involved in plant hormone signaling, DNA-binding and transcriptional regulation. The results of subcellular localization and transient expression in tobacco leaves confirmed the nuclear localization of PagNAC045. Yeast two-hybrid revealed that PagNAC045 protein exhibits transcriptional activation property and the activation domain located in its C-terminus. In addition, the 1063 bp promoter of PagNAC045 was able to drive GUS gene expression in the leaves and roots. In poplar leaves and roots, PagNAC045 expression increased significantly by salt and ABA treatments. Tobacco seedlings overexpressing PagNAC045 exhibited enhanced tolerance to NaCl and ABA compared to the wild-type (WT). Yeast one-hybrid assay demonstrated that a bHLH104-like transcription factor can bind to the promoter sequence of PagNAC045. CONCLUSION The PagNAC045 functions as positive regulator in plant responses to NaCl and ABA-mediated stresses.
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Affiliation(s)
- Xuemei Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin, 150040, China
- Department of Biology, Genetics Institute, University of Florida (UF), Gainesville, FL, 32611, USA
| | - Zihan Cheng
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin, 150040, China
| | - Gaofeng Fan
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin, 150040, China
| | - Wenjing Yao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin, 150040, China
- Co-Innovation Center for Sustainable Forestry in Southern China/Bamboo Research Institute, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, China
| | - Wei Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin, 150040, China
| | - Sixue Chen
- Department of Biology, Genetics Institute, University of Florida (UF), Gainesville, FL, 32611, USA.
- Plant Molecular and Cellular Biology Program, UF, Gainesville, FL, 32610, USA.
- Proteomics and Mass Spectrometry, Interdisciplinary Center for Biotechnology Research, UF, Gainesville, FL, 32610, USA.
| | - Tingbo Jiang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin, 150040, China.
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Xin Y, Wu Y, Han X, Xu LA. Overexpression of the Ginkgo biloba WD40 gene GbLWD1-like improves salt tolerance in transgenic Populus. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 313:111092. [PMID: 34763876 DOI: 10.1016/j.plantsci.2021.111092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 10/06/2021] [Accepted: 10/10/2021] [Indexed: 06/13/2023]
Abstract
WD40 transcription factors are an ancient protein family whose members play important roles in plant growth and stress resistance. In this study, a new WD40 gene was cloned from Ginkgo biloba L. via the rapid amplification of cDNA ends (RACE) technique. This gene was 824 bp in length and encoded 109 amino acids. Sequence alignment and phylogenetic analysis showed that this transcription factor was most similar to the LWD1 protein, and it was thus named GbLWD1-like. This gene was expressed mainly in the leaves, followed by the roots. Phenotypic analysis showed that the transgenic plants grew better, were taller, and had significantly more roots than the control check (CK) plants. Moreover, the transgenic plants were more tolerant to salt stress than the CK plants. After 11 days of salt treatment, all the leaves of the CK plants had dried up and fallen off, whereas in the transgenic lines, only the edges of the bottom leaves had turned yellow. Under salt stress, the expression levels of some genes related to salt tolerance were higher in the transgenic plants than in the CK plants. This study suggests that the GbLWD1-like gene may be related to the growth potential and improved salt tolerance of plants and may play an important role in the response to adversity.
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Affiliation(s)
- Yue Xin
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, China
| | - Yaqiong Wu
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, China; Research Center for Pomology, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Qian Hu Hou Cun No. 1, Nanjing, 210014, China
| | - Xin Han
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, China
| | - Li-An Xu
- Co-Innovation Center for the Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, China.
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14
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Cheng Z, Zhang X, Yao W, Gao Y, Zhao K, Guo Q, Zhou B, Jiang T. Genome-wide identification and expression analysis of the xyloglucan endotransglucosylase/hydrolase gene family in poplar. BMC Genomics 2021; 22:804. [PMID: 34749656 PMCID: PMC8576992 DOI: 10.1186/s12864-021-08134-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 10/28/2021] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Xyloglucan endotransglucosylase/hydrolase (XTH) family plays an important role in cell wall reconstruction and stress resistance in plants. However, the detailed characteristics of XTH family genes and their expression pattern under salt stress have not been reported in poplar. RESULTS In this study, a total of 43 PtrXTH genes were identified from Populus simonii × Populus nigra, and most of them contain two conserved structures (Glyco_hydro_16 and XET_C domain). The promoters of the PtrXTH genes contain mutiple cis-acting elements related to growth and development and stress responses. Collinearity analysis revealed that the XTH genes from poplar has an evolutionary relationship with other six species, including Eucalyptus robusta, Solanum lycopersicum, Glycine max, Arabidopsis, Zea mays and Oryza sativa. Based on RNA-Seq analysis, the PtrXTH genes have different expression patterns in the roots, stems and leaves, and many of them are highly expressed in the roots. In addition, there are11 differentially expressed PtrXTH genes in the roots, 9 in the stems, and 7 in the leaves under salt stress. In addition, the accuracy of RNA-Seq results was verified by RT-qPCR. CONCLUSION All the results indicated that XTH family genes may play an important role in tissue specificity and salt stress response. This study will lay a theoretical foundation for further study on molecular function of XTH genes in poplar.
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Affiliation(s)
- Zihan Cheng
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Xuemei Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Wenjing Yao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
- Bamboo Research Institute, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, China
| | - Yuan Gao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Kai Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Qing Guo
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Boru Zhou
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China.
| | - Tingbo Jiang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China.
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15
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Sáenz-de la O D, Morales LO, Strid Å, Torres-Pacheco I, Guevara-González RG. Ultraviolet-B exposure and exogenous hydrogen peroxide application lead to cross-tolerance toward drought in Nicotiana tabacum L. PHYSIOLOGIA PLANTARUM 2021; 173:666-679. [PMID: 33948972 DOI: 10.1111/ppl.13448] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 04/22/2021] [Accepted: 04/29/2021] [Indexed: 06/12/2023]
Abstract
Acclimation of plants to water deficit involves biochemical and physiological adjustments. Here, we studied how ultraviolet (UV)-B exposure and exogenously applied hydrogen peroxide (H2 O2 ) potentiates drought tolerance in tobacco (Nicotiana tabacum L. cv. xanthi nc). Separate and combined applications for 14 days of 1.75 kJ m-2 day-1 UV-B radiation and 0.2 mM H2 O2 were assessed. Both factors, individually and combined, resulted in inhibition of growth. Furthermore, the combined treatment led to the most compacted plants. UV-B- and UV-B + H2 O2 -treated plants increased total antioxidant capacity and foliar epidermal flavonol index. H2 O2 - and UV-B + H2 O2 -pre-treated plants showed cross-tolerance to a subsequent 7-day moderate drought treatment, which was assessed as the absence of negative impact on growth, leaf wilting, and leaf relative water content. Plant responses to the pre-treatment were notably different: (1) H2 O2 increased the activity of catalase (EC 1.11.1.6), phenylalanine ammonia lyase (EC 4.3.1.5), and peroxidase activities (EC 1.11.1.7), and (2) the combined treatment induced epidermal flavonols which were key to drought tolerance. We report synergistic effects of UV-B and H2 O2 on transcription accumulation of UV RESISTANCE LOCUS 8, NAC DOMAIN PROTEIN 13 (NAC13), and BRI1-EMS-SUPPRESSOR 1 (BES1). Our data demonstrate a pre-treatment-dependent response to drought for NAC13, BES1, and CHALCONE SYNTHASE transcript accumulation. This study highlights the potential of combining UV-B and H2 O2 to improve drought tolerance which could become a useful tool to reduce water use.
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Affiliation(s)
- Diana Sáenz-de la O
- Biosystems Engineering, School of Engineering, Autonomous University of Queretaro-Campus Amazcala, Querétaro, Mexico
| | - Luis O Morales
- School of Science and Technology, Örebro University, Örebro, Sweden
| | - Åke Strid
- School of Science and Technology, Örebro University, Örebro, Sweden
| | - Irineo Torres-Pacheco
- Biosystems Engineering, School of Engineering, Autonomous University of Queretaro-Campus Amazcala, Querétaro, Mexico
| | - Ramón G Guevara-González
- Biosystems Engineering, School of Engineering, Autonomous University of Queretaro-Campus Amazcala, Querétaro, Mexico
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Chen M, Fu Y, Mou Q, An J, Zhu X, Ahmed T, Zhang S, Basit F, Hu J, Guan Y. Spermidine Induces Expression of Stress Associated Proteins (SAPs) Genes and Protects Rice Seed from Heat Stress-Induced Damage during Grain-Filling. Antioxidants (Basel) 2021; 10:antiox10101544. [PMID: 34679679 PMCID: PMC8533277 DOI: 10.3390/antiox10101544] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 09/26/2021] [Accepted: 09/26/2021] [Indexed: 01/10/2023] Open
Abstract
Heat stress during seed maturation significantly reduced seed size and quality. Polyamines, especially spermidine (Spd), were reported to be closely related to seed development and plant heat tolerance. Stress-associated proteins (SAPs) also played a critical role in plant heat resistance, but the relationship between Spd and SAPs in improving rice tolerance to heat stress during grain filling has not been reported. Our results showed that the external spraying Spd (1.5 mM) significantly increased seed germination rate, germination index, vigor index and 1000-grain weight, significantly increased endogenous Spd, spermine (Spm) content and peroxidase activity; significantly reduced MDA content; and greatly alleviated the impact of heat stress on rice seed quality during grain filling stage as compared with high temperature control. OsSAP5 was the most upregulated expression induced by Spd, and may be mainly involved in the Spd-mediated enhancement of high-temperature resistance during rice seed development. Overexpression of OsSAP5 in Arabidopsis enhanced 1000-grain weight and seed heat resistance. Exogenous Spd alleviated the survival rate and seedling length, reduced MDA content, and upregulated the expression levels of SPDS and SPMS in Atsap4 mutant under high temperature during seed germination. In all, exogenous Spd alleviated the heat damage on seed quality during the grain filling stage and seed germination stage by improving endogenous Spd and Spm. OsSAP5, a key gene induced by Spd, might be involved in the rice heat resistance and seed quality in coordination with Spd and Spm.
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Affiliation(s)
- Min Chen
- Institute of Crop Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.C.); (Q.M.); (J.A.); (F.B.); (J.H.)
| | - Yuying Fu
- Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei 230041, China;
| | - Qingshan Mou
- Institute of Crop Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.C.); (Q.M.); (J.A.); (F.B.); (J.H.)
| | - Jianyu An
- Institute of Crop Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.C.); (Q.M.); (J.A.); (F.B.); (J.H.)
| | - Xiaobo Zhu
- Hainan Research Institute, Zhejiang University, Sanya 572025, China;
| | - Temoor Ahmed
- State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China;
| | - Sheng Zhang
- Taizhou Agricultural Technology Extension Center, Taizhou 318000, China;
| | - Farwa Basit
- Institute of Crop Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.C.); (Q.M.); (J.A.); (F.B.); (J.H.)
| | - Jin Hu
- Institute of Crop Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.C.); (Q.M.); (J.A.); (F.B.); (J.H.)
- Hainan Research Institute, Zhejiang University, Sanya 572025, China;
| | - Yajing Guan
- Institute of Crop Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China; (M.C.); (Q.M.); (J.A.); (F.B.); (J.H.)
- Correspondence:
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17
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Zhang J, Huang D, Zhao X, Zhang M. Evaluation of drought resistance and transcriptome analysis for the identification of drought-responsive genes in Iris germanica. Sci Rep 2021; 11:16308. [PMID: 34381085 PMCID: PMC8358056 DOI: 10.1038/s41598-021-95633-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 07/28/2021] [Indexed: 02/07/2023] Open
Abstract
Iris germanica, a species with very high ornamental value, exhibits the strongest drought resistance among the species in the genus Iris, but the molecular mechanism underlying its drought resistance has not been evaluated. To investigate the gene expression profile changes exhibited by high-drought-resistant I. germanica under drought stress, 10 cultivars with excellent characteristics were included in pot experiments under drought stress conditions, and the changes in the chlorophyll (Chl) content, plasma membrane relative permeability (RP), and superoxide dismutase (SOD), malondialdehyde (MDA), free proline (Pro), and soluble protein (SP) levels in leaves were compared among these cultivars. Based on their drought-resistance performance, the 10 cultivars were ordered as follows: 'Little Dream' > 'Music Box' > 'X'Brassie' > 'Blood Stone' > 'Cherry Garden' > 'Memory of Harvest' > 'Immortality' > 'White and Gold' > 'Tantara' > 'Clarence'. Using the high-drought-resistant cultivar 'Little Dream' as the experimental material, cDNA libraries from leaves and rhizomes treated for 0, 6, 12, 24, and 48 h with 20% polyethylene glycol (PEG)-6000 to simulate a drought environment were sequenced using the Illumina sequencing platform. We obtained 1, 976, 033 transcripts and 743, 982 unigenes (mean length of 716 bp) through a hierarchical clustering analysis of the resulting transcriptome data. The unigenes were compared against the Nr, Nt, Pfam, KOG/COG, Swiss-Prot, KEGG, and gene ontology (GO) databases for functional annotation, and the gene expression levels in leaves and rhizomes were compared between the 20% PEG-6000 stress treated (6, 12, 24, and 48 h) and control (0 h) groups using DESeq2. 7849 and 24,127 differentially expressed genes (DEGs) were obtained from leaves and rhizomes, respectively. GO and KEGG enrichment analyses of the DEGs revealed significantly enriched KEGG pathways, including ribosome, photosynthesis, hormone signal transduction, starch and sucrose metabolism, synthesis of secondary metabolites, and related genes, such as heat shock proteins (HSPs), transcription factors (TFs), and active oxygen scavengers. In conclusion, we conducted the first transcriptome sequencing analysis of the I. germanica cultivar 'Little Dream' under drought stress and generated a large amount of genetic information. This study lays the foundation for further exploration of the molecular mechanisms underlying the responses of I. germanica to drought stress and provides valuable genetic resources for the breeding of drought-resistant plants.
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Affiliation(s)
- Jingwei Zhang
- grid.274504.00000 0001 2291 4530College of Landscape Architecture and Tourism, Hebei Agricultural University, Baoding, China
| | - Dazhuang Huang
- grid.274504.00000 0001 2291 4530College of Landscape Architecture and Tourism, Hebei Agricultural University, Baoding, China
| | - Xiaojie Zhao
- grid.274504.00000 0001 2291 4530College of Landscape Architecture and Tourism, Hebei Agricultural University, Baoding, China
| | - Man Zhang
- grid.274504.00000 0001 2291 4530State Key Laboratory of North China Crop Improvement and Regulation, Hebei Agricultural University, Baoding, China
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Liu X, Xie X, Du H, Sanganyado E, Wang W, Aslam M, Chen J, Chen W, Liang H. Bioinformatic analysis and genetic engineering approaches for recombinant biopharmaceutical glycoproteins production in microalgae. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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19
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Zhang X, Cheng Z, Yao W, Zhao K, Wang X, Jiang T. Functional Characterization of PsnNAC036 under Salinity and High Temperature Stresses. Int J Mol Sci 2021; 22:2656. [PMID: 33800795 PMCID: PMC7961394 DOI: 10.3390/ijms22052656] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 02/24/2021] [Accepted: 03/01/2021] [Indexed: 12/30/2022] Open
Abstract
Plant growth and development are challenged by biotic and abiotic stresses including salinity and heat stresses. For Populus simonii × P. nigra as an important greening and economic tree species in China, increasing soil salinization and global warming have become major environmental challenges. We aim to unravel the molecular mechanisms underlying tree tolerance to salt stress and high temprerature (HT) stress conditions. Transcriptomics revealed that a PsnNAC036 transcription factor (TF) was significantly induced by salt stress in P. simonii × P. nigra. This study focuses on addressing the biological functions of PsnNAC036. The gene was cloned, and its temporal and spatial expression was analyzed under different stresses. PsnNAC036 was significantly upregulated under 150 mM NaCl and 37 °C for 12 h. The result is consistent with the presence of stress responsive cis-elements in the PsnNAC036 promoter. Subcellular localization analysis showed that PsnNAC036 was targeted to the nucleus. Additionally, PsnNAC036 was highly expressed in the leaves and roots. To investigate the core activation region of PsnNAC036 protein and its potential regulatory factors and targets, we conducted trans-activation analysis and the result indicates that the C-terminal region of 191-343 amino acids of the PsnNAC036 was a potent activation domain. Furthermore, overexpression of PsnNAC036 stimulated plant growth and enhanced salinity and HT tolerance. Moreover, 14 stress-related genes upregulated in the transgenic plants under high salt and HT conditions may be potential targets of the PsnNAC036. All the results demonstrate that PsnNAC036 plays an important role in salt and HT stress tolerance.
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Affiliation(s)
- Xuemei Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (X.Z.); (Z.C.); (W.Y.); (K.Z.); (X.W.)
| | - Zihan Cheng
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (X.Z.); (Z.C.); (W.Y.); (K.Z.); (X.W.)
| | - Wenjing Yao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (X.Z.); (Z.C.); (W.Y.); (K.Z.); (X.W.)
- Co-Innovation Center for Sustainable Forestry in Southern China/Bamboo Research Institute, Nanjing Forestry University, Nanjing 210037, China
| | - Kai Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (X.Z.); (Z.C.); (W.Y.); (K.Z.); (X.W.)
| | - Xueyi Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (X.Z.); (Z.C.); (W.Y.); (K.Z.); (X.W.)
| | - Tingbo Jiang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (X.Z.); (Z.C.); (W.Y.); (K.Z.); (X.W.)
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20
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Cheng Z, Zhang X, Yao W, Zhao K, Liu L, Fan G, Zhou B, Jiang T. Genome-wide search and structural and functional analyses for late embryogenesis-abundant (LEA) gene family in poplar. BMC PLANT BIOLOGY 2021; 21:110. [PMID: 33627082 PMCID: PMC7903804 DOI: 10.1186/s12870-021-02872-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 02/02/2021] [Indexed: 05/26/2023]
Abstract
BACKGROUND The Late Embryogenesis-Abundant (LEA) gene families, which play significant roles in regulation of tolerance to abiotic stresses, widely exist in higher plants. Poplar is a tree species that has important ecological and economic values. But systematic studies on the gene family have not been reported yet in poplar. RESULTS On the basis of genome-wide search, we identified 88 LEA genes from Populus trichocarpa and renamed them as PtrLEA. The PtrLEA genes have fewer introns, and their promoters contain more cis-regulatory elements related to abiotic stress tolerance. Our results from comparative genomics indicated that the PtrLEA genes are conserved and homologous to related genes in other species, such as Eucalyptus robusta, Solanum lycopersicum and Arabidopsis. Using RNA-Seq data collected from poplar under two conditions (with and without salt treatment), we detected 24, 22 and 19 differentially expressed genes (DEGs) in roots, stems and leaves, respectively. Then we performed spatiotemporal expression analysis of the four up-regulated DEGs shared by the tissues, constructed gene co-expression-based networks, and investigated gene function annotations. CONCLUSION Lines of evidence indicated that the PtrLEA genes play significant roles in poplar growth and development, as well as in responses to salt stress.
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Affiliation(s)
- Zihan Cheng
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Xuemei Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Wenjing Yao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
- Bamboo Research Institute, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, China
| | - Kai Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Lin Liu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Gaofeng Fan
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Boru Zhou
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China.
| | - Tingbo Jiang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China.
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Yuan C, Li C, Lu X, Zhao X, Yan C, Wang J, Sun Q, Shan S. Comprehensive genomic characterization of NAC transcription factor family and their response to salt and drought stress in peanut. BMC PLANT BIOLOGY 2020; 20:454. [PMID: 33008287 PMCID: PMC7532626 DOI: 10.1186/s12870-020-02678-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 09/24/2020] [Indexed: 05/10/2023]
Abstract
BACKGROUND Peanut is one of the most important oil crop species worldwide. NAC transcription factor (TF) genes play important roles in the salt and drought stress responses of plants by activating or repressing target gene expression. However, little is known about NAC genes in peanut. RESULTS We performed a genome-wide characterization of NAC genes from the diploid wild peanut species Arachis duranensis and Arachis ipaensis, which included analyses of chromosomal locations, gene structures, conserved motifs, expression patterns, and cis-acting elements within their promoter regions. In total, 81 and 79 NAC genes were identified from A. duranensis and A. ipaensis genomes. Phylogenetic analysis of peanut NACs along with their Arabidopsis and rice counterparts categorized these proteins into 18 distinct subgroups. Fifty-one orthologous gene pairs were identified, and 46 orthologues were found to be highly syntenic on the chromosomes of both A. duranensis and A. ipaensis. Comparative RNA sequencing (RNA-seq)-based analysis revealed that the expression of 43 NAC genes was up- or downregulated under salt stress and under drought stress. Among these genes, the expression of 17 genes in cultivated peanut (Arachis hypogaea) was up- or downregulated under both stresses. Moreover, quantitative reverse transcription PCR (RT-qPCR)-based analysis revealed that the expression of most of the randomly selected NAC genes tended to be consistent with the comparative RNA-seq results. CONCLUSION Our results facilitated the functional characterization of peanut NAC genes, and the genes involved in salt and drought stress responses identified in this study could be potential genes for peanut improvement.
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Affiliation(s)
- Cuiling Yuan
- Shandong Peanut Research Institute, Qingdao, 266100, China
| | - Chunjuan Li
- Shandong Peanut Research Institute, Qingdao, 266100, China
| | - Xiaodong Lu
- Shandong Peanut Research Institute, Qingdao, 266100, China
| | - Xiaobo Zhao
- Shandong Peanut Research Institute, Qingdao, 266100, China
| | - Caixia Yan
- Shandong Peanut Research Institute, Qingdao, 266100, China
| | - Juan Wang
- Shandong Peanut Research Institute, Qingdao, 266100, China
| | - Quanxi Sun
- Shandong Peanut Research Institute, Qingdao, 266100, China.
| | - Shihua Shan
- Shandong Peanut Research Institute, Qingdao, 266100, China.
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Li X, Tang Y, Li H, Luo W, Zhou C, Zhang L, Lv J. A wheat R2R3 MYB gene TaMpc1-D4 negatively regulates drought tolerance in transgenic Arabidopsis and wheat. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 299:110613. [PMID: 32900449 DOI: 10.1016/j.plantsci.2020.110613] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/26/2020] [Accepted: 07/21/2020] [Indexed: 05/02/2023]
Abstract
MYB transcription factors (TFs) are one of the largest TF families, and R2R3-type MYB TFs participate in the multiply abiotic stress responses in wheat. In this study, an R2R3-type MYB gene Myb protein colourless 1 located on chromosome D (named TaMpc1-D4), was cloned from wheat. TaMpc1-D4-GFP protein was localized in the nucleus. Overexpression of TaMpc1-D4 reduced drought tolerance in transgenic Arabidopsis lines, which was supported by the lower germination rate, the shorter root length, a higher level of O2- and malonaldehyde (MDA), the decreased proline content, and limited activities of peroxidase (POD), superoxide dismutase (SOD), and catalase (CAT). Furthermore, P5CS1, RD29A, RD29B, DREB2A, ABF3, CBF1, CBF2, CBF3, ERF1, POD1, SOD (Cu/Zn), and CAT1 genes related to the stress and antioxidant system were remarkably down-regulated in TaMpc1-D4 transgenic Arabidopsis lines under drought stress. Silencing TaMpc1-D4 expression in wheat enhanced the relative water content (RWC), the proline content, and the activities of antioxidant enzymes, and activated stress-related and antioxidant-related genes (DREB1, DREB3, ERF3, ERF4b, ABF, P5CS, POD, SOD (Fe), and CAT). Taken together, these results indicated that TaMpc1-D4 negatively modulated drought tolerance by regulating the capacity of the enzyme system and the expression of stress-related and antioxidant-related genes.
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Affiliation(s)
- Xiaorui Li
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Yan Tang
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Hailan Li
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Wen Luo
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Chunju Zhou
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Lixin Zhang
- College of Life Sciences, Northwest A&F University, Yangling 712100, China
| | - Jinyin Lv
- College of Life Sciences, Northwest A&F University, Yangling 712100, China.
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Duan AQ, Tao JP, Jia LL, Tan GF, Liu JX, Li T, Chen LZ, Su XJ, Feng K, Xu ZS, Xiong AS. AgNAC1, a celery transcription factor, related to regulation on lignin biosynthesis and salt tolerance. Genomics 2020; 112:5254-5264. [PMID: 32976976 DOI: 10.1016/j.ygeno.2020.09.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 09/01/2020] [Accepted: 09/22/2020] [Indexed: 12/16/2022]
Abstract
The NAC transcription factor participates in various biotic and abiotic stress responses and plays a critical role in plant development. Lignin is a water-insoluble dietary fiber, but it is second only to cellulose in abundance. Celery is the main source of dietary fiber, but its quality and production are limited by various abiotic stresses. Here, AgNAC1 containing the NAM domain was identified from celery. AgNAC1 was found to be a nuclear protein. Transgenic Arabidopsis thaliana plants hosting AgNAC1 have longer root lengths and stomatal axis lengths than the wide type (WT). The evidence from lignin determination and expression levels of lignin-related genes indicated that AgNAC1 plays a vital role in lignin biosynthesis. Furthermore, the results of the physiological characterization and the drought and salt treatments indicate that AgNAC1-overexpressing plants are significantly resistive to salt stress. Under drought and salt treatments, the AgNAC1 transgenic Arabidopsis thaliana plants presented increased superoxide dismutase (SOD) and peroxidase (POD) activities and decreased malondialdehyde (MDA) content and size of stomatal apertures relatively to the WT plants. The AgNAC1 served as a positive regulator in inducing the expression of stress-responsive genes. Overall, the overexpressing AgNAC1 enhanced the plants' resistance to salt stress and played a regulatory role in lignin accumulation.
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Affiliation(s)
- Ao-Qi Duan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Jian-Ping Tao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Li-Li Jia
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Guo-Fei Tan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China; Institute of Horticulture, Guizhou Academy of Agricultural Sciences, Guiyang 55006, China
| | - Jie-Xia Liu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Tong Li
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Long-Zheng Chen
- Institute of Vegetable Crops, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Jiangsu Academy of Agricultural Sciences, Nanjing 210095, China
| | - Xiao-Jun Su
- Institute of Vegetable Crops, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Jiangsu Academy of Agricultural Sciences, Nanjing 210095, China
| | - Kai Feng
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhi-Sheng Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Ai-Sheng Xiong
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in East China, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
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Yao W, Li C, Lin S, Wang J, Zhou B, Jiang T. Transcriptome analysis of salt-responsive and wood-associated NACs in Populus simonii × Populus nigra. BMC PLANT BIOLOGY 2020; 20:317. [PMID: 32631231 PMCID: PMC7336439 DOI: 10.1186/s12870-020-02507-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 06/19/2020] [Indexed: 05/03/2023]
Abstract
BACKGROUND NAC (NAM, ATAF1-2, and CUC2) family is one of the largest plant-specific transcription factor families known to play significant roles in plant development processes and stress responses. RESULTS In the study, a total of 112 NACs were identified to be differentially expressed in the comparisons of leaves and stems, leaves and roots, roots and stems of Populus simonii×P. nigra among 289 members by RNA-Seq. And 148, 144 and 134 NACs were detected to be salt-responsive in the roots, stems and leaves under 150 mM NaCl stress, respectively. Among them, a total of 53 salt-responsive NACs were shared across the three tissues. Under salt stress, 41/37 NACs were identified to be up/down-regulated in the leaves of Populus simonii × P.nigra among 170 non-redundant NACs by RT-qPCR, which was similar with RNA-Seq results. The expression pattern analysis of 6 NACs including four randomly up-regulated genes (NAC86, NAC105, NAC139 and NAC163) and two down-regulated genes (NAC15 and NAC149) indicated a few NACs showed specific temporal and spatial expression patterns in the three tissues of Populus simonii×P.nigra. Based on transcriptome screening and phylogenic analysis of differentially expressed NACs in different tissues under salt stress, 18 potential NACs associated with wood formation and 20 involved in stress responses were identified in Populus simonii×P.nigra. CONCLUSIONS The study further gains an understanding of the connection of tissue specificity and gene function in poplar, and lays the foundation of functional analysis of poplar NACs in stress responses.
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Affiliation(s)
- Wenjing Yao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin, 150040, China
- Co-Innovation Center for Sustainable Forestry in Southern China/Bamboo Research Institute, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, China
| | - Chuanzhe Li
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Shuyan Lin
- Co-Innovation Center for Sustainable Forestry in Southern China/Bamboo Research Institute, Nanjing Forestry University, 159 Longpan Road, Nanjing, 210037, China
| | - Jianping Wang
- Department of Agronomy, University of Florida, 2033 Mowry Road, Gainesville, FL32610, USA
| | - Boru Zhou
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin, 150040, China.
| | - Tingbo Jiang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin, 150040, China.
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25
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Wang Y, Cao S, Guan C, Kong X, Wang Y, Cui Y, Liu B, Zhou Y, Zhang Y. Overexpressing the NAC transcription factor LpNAC13 from Lilium pumilum in tobacco negatively regulates the drought response and positively regulates the salt response. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 149:96-110. [PMID: 32058898 DOI: 10.1016/j.plaphy.2020.01.036] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 01/29/2020] [Accepted: 01/29/2020] [Indexed: 05/25/2023]
Abstract
NACs are one of the largest transcription factor families in plants and are involved in the response to abiotic stress. A new stress-responsive NAC transcription factor gene, LpNAC13, was isolated from Lilium pumilum bulbs. The expression of LpNAC13 was induced by drought, salt, cold and ABA treatments. LpNAC13 overexpressing plants were generated to explore the function of LpNAC13 in response to drought and salt stress. Overexpression of LpNAC13 in tobacco displayed a reduced drought tolerance but exhibited an enhanced salt tolerance. The LpNAC13 overexpression plants had decreased antioxidant enzyme activities, content of proline and chlorophyll, increased MDA content under drought condition, the results in the LpNAC13 plants under salt condition were opposite to those under drought condition. The seed germination and root length assays of overexpression of LpNAC13 showed decreased sensitivity to ABA. Functional analyses demonstrate that LpNAC13 plays opposite roles in drought and salt stress tolerance, acting as a negative regulator of drought response but as a positive regulator of salt response in tobacco.
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Affiliation(s)
- Ying Wang
- College of Landscape Architecture, Northeast Forestry University, Harbin, 150040, China
| | - Shangjie Cao
- College of Landscape Architecture, Northeast Forestry University, Harbin, 150040, China
| | - Chunjing Guan
- College of Landscape Architecture, Northeast Forestry University, Harbin, 150040, China
| | - Xin Kong
- College of Landscape Architecture, Northeast Forestry University, Harbin, 150040, China
| | - Yiping Wang
- College of Landscape Architecture, Northeast Forestry University, Harbin, 150040, China
| | - Ying Cui
- College of Landscape Architecture, Northeast Forestry University, Harbin, 150040, China
| | - Bin Liu
- College of Landscape Architecture, Northeast Forestry University, Harbin, 150040, China
| | - Yunwei Zhou
- College of Landscape Architecture, Northeast Forestry University, Harbin, 150040, China
| | - Yanni Zhang
- College of Landscape Architecture, Northeast Forestry University, Harbin, 150040, China.
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26
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Guo Y, Zhang H, Yuan Y, Cui X, Zhang L. Identification and characterization of NAC genes in response to abiotic stress conditions in Picea wilsonii using transcriptome sequencing. BIOTECHNOL BIOTEC EQ 2020. [DOI: 10.1080/13102818.2020.1718550] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Yuxiao Guo
- Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, Beijing, PR China
| | - Hehua Zhang
- Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, Beijing, PR China
| | - Yihang Yuan
- Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, Beijing, PR China
| | - Xiaoyue Cui
- Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, Beijing, PR China
| | - Lingyun Zhang
- Key Laboratory of Forest Silviculture and Conservation of the Ministry of Education, The College of Forestry, Beijing Forestry University, Beijing, PR China
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Li J, Sun P, Xia Y, Zheng G, Sun J, Jia H. A Stress-Associated Protein, PtSAP13, From Populus trichocarpa Provides Tolerance to Salt Stress. Int J Mol Sci 2019; 20:ijms20225782. [PMID: 31744233 PMCID: PMC6888306 DOI: 10.3390/ijms20225782] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/12/2019] [Accepted: 11/15/2019] [Indexed: 01/19/2023] Open
Abstract
The growth and production of poplars are usually affected by unfavorable environmental conditions such as soil salinization. Thus, enhancing salt tolerance of poplars will promote their better adaptation to environmental stresses and improve their biomass production. Stress-associated proteins (SAPs) are a novel class of A20/AN1 zinc finger proteins that have been shown to confer plants' tolerance to multiple abiotic stresses. However, the precise functions of SAP genes in poplars are still largely unknown. Here, the expression profiles of Populus trichocarpa SAPs in response to salt stress revealed that PtSAP13 with two AN1 domains was up-regulated dramatically during salt treatment. The β-glucuronidase (GUS) staining showed that PtSAP13 was accumulated dominantly in leaf and root, and the GUS signal was increased under salt condition. The Arabidopsis transgenic plants overexpressing PtSAP13 exhibited higher seed germination and better growth than wild-type (WT) plants under salt stress, demonstrating that overexpression of PtSAP13 increased salt tolerance. Higher activities of antioxidant enzymes were found in PtSAP13-overexpressing plants than in WT plants under salt stress. Transcriptome analysis revealed that some stress-related genes, including Glutathione peroxidase 8, NADP-malic enzyme 2, Response to ABA and Salt 1, WRKYs, Glutathione S-Transferase, and MYBs, were induced by salt in transgenic plants. Moreover, the pathways of flavonoid biosynthesis and metabolic processes, regulation of response to stress, response to ethylene, dioxygenase activity, glucosyltransferase activity, monooxygenase activity, and oxidoreductase activity were specially enriched in transgenic plants under salt condition. Taken together, our results demonstrate that PtSAP13 enhances salt tolerance through up-regulating the expression of stress-related genes and mediating multiple biological pathways.
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Affiliation(s)
- Jianbo Li
- Experimental Center of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China; (Y.X.); (G.Z.); (J.S.)
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, China;
- Correspondence: (J.L.); (H.J.)
| | - Pei Sun
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, China;
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Yongxiu Xia
- Experimental Center of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China; (Y.X.); (G.Z.); (J.S.)
| | - Guangshun Zheng
- Experimental Center of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China; (Y.X.); (G.Z.); (J.S.)
| | - Jingshuang Sun
- Experimental Center of Forestry in North China, Chinese Academy of Forestry, Beijing 102300, China; (Y.X.); (G.Z.); (J.S.)
| | - Huixia Jia
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing 100091, China;
- Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
- Correspondence: (J.L.); (H.J.)
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Cheng Z, Zhang X, Zhao K, Yao W, Li R, Zhou B, Jiang T. Over-Expression of ERF38 Gene Enhances Salt and Osmotic Tolerance in Transgenic Poplar. FRONTIERS IN PLANT SCIENCE 2019; 10:1375. [PMID: 31749818 PMCID: PMC6843637 DOI: 10.3389/fpls.2019.01375] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 10/04/2019] [Indexed: 05/04/2023]
Abstract
Ethylene response factor (ERF) gene family plays an important role in abiotic stress responses. In this study, we isolated a salt-inducible ERF gene, ERF38 (Potri.006G138900.1), from the 84K poplar (Populus alba × Populus glandulosa) and investigated its functions in salt and osmotic tolerance. We identified that ERF38 protein was targeted to nucleus and had no self-activation. Results from yeast-one-hybrid indicated that the ERF38 protein can specifically bind to the dehydration responsive element (DRE). We then successfully transferred the ERF38 gene into the 84K poplar. Under respective salt and polyethylene glycol (PEG)-6000 stresses, four of the physiological traits, including peroxidase (POD) and superoxide dismutase (SOD) activities, soluble protein content, and proline content, increased significantly in the transgenic plants, compared to the wild type. Regarding the other two parameters, hydrogen peroxide (H2O2) and malondialdehyde (MDA) content, their increments in the transgenic lines under the stresses, which were compared to the water control, were significantly low than that of the wild type. In addition, reactive oxygen species (ROS) are scavenged in the transgenic lines under the stresses, but not in the wild type (WT). Interestingly, when challenged with the stresses, expression levels of a few genes associated with POD and SOD metabolism were significantly increased in the transgenic poplars. In all, evidence from morphological, physiological, and biochemical analyses indicated that over-expression of ERF38 gene can improve salt and osmotic tolerance in the transgenic poplar.
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Affiliation(s)
- Zihan Cheng
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Xuemei Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Kai Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Wenjing Yao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
- Bamboo Research Institute, Nanjing Forestry University, Nanjing, China
| | - Renhua Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Boru Zhou
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
| | - Tingbo Jiang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, China
- *Correspondence: Tingbo Jiang,
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