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Liu Y, Wu S, Qin X, Yu M, Shabala S, Zheng X, Hu C, Tan Q, Xu S, Sun X. Combined dynamic transcriptome and flavonoid metabolome reveal the role of Mo nanoparticles in the nodulation process in soybean. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 945:173733. [PMID: 38851347 DOI: 10.1016/j.scitotenv.2024.173733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 05/29/2024] [Accepted: 06/01/2024] [Indexed: 06/10/2024]
Abstract
Symbiotic nitrogen fixation can reduce the impact of agriculture on the environment by reducing fertilizer input. The rapid development of nanomaterials in agriculture provides a new prospect for us to improve the biological nitrogen fixation ability of leguminous crops. Molybdenum is an important component of nitrogenase, and the potential application of MoO3NPs in agriculture is largely unexplored. In this study, on the basis of verifying that MoO3NPs can improve the nitrogen fixation ability of soybean, the effects of MoO3NPs on the symbiotic nitrogen fixation process of soybean were investigated by using dynamic transcriptome and targeted metabolome techniques. Here we showed that compared with conventional molybdenum fertilizer, minute concentrations of MoO3NPs (0.01-0.1 mg kg-1) could promote soybean growth and nitrogen fixation efficiency. The nodules number, fresh nodule weight and nitrogenase activity of 0.1 mg kg-1 were increased by 17 %, 14 % and 27 %, and plant nitrogen accumulation increased by 17 %. Compared with conventional molybdenum fertilizer, MoO3NPs had a greater effect on apigenin, kaempferol and other flavonoid, and the expression of nodulation related genes such as ENOD93, F3'H. Based on WGCNA analysis, we identified a core gene GmCHS9 that was positively responsive to molybdenum and was highly expressed during MoO3NPs induced nodulation. MoO3NPs could improve the nitrogen fixation ability of soybean by promoting the secretion of flavonoids and the expression of key genes. This study provided a new perspective for the nano-strengthening strategy of nodules development and flavonoid biosynthesis by molybdenum.
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Affiliation(s)
- Yining Liu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Songwei Wu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiaoming Qin
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Min Yu
- International Research Centre for Environmental Membrane Biology, Foshan University, Foshan 528000, China
| | - Sergey Shabala
- International Research Centre for Environmental Membrane Biology, Foshan University, Foshan 528000, China; School of Biological Science, University of Western Australia, Crawley, WA 6009, Australia
| | - Xiaomei Zheng
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Chengxiao Hu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Qiling Tan
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Shoujun Xu
- Guangdong Agricultural Environment and Cultivated Land Quality Protection Center, Guangdong Agricultural and Rural Investment Project Center, Guangzhou 510500, China
| | - Xuecheng Sun
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resource and Environment, Huazhong Agricultural University, Wuhan 430070, China; Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan 430070, PR China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518000, PR China.
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Wang T, Ma X, Chen Y, Wang C, Xia Z, Liu Z, Gao L, Zhang W. SlNAC3 suppresses cold tolerance in tomatoes by enhancing ethylene biosynthesis. PLANT, CELL & ENVIRONMENT 2024; 47:3132-3146. [PMID: 38693781 DOI: 10.1111/pce.14933] [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: 09/02/2023] [Revised: 02/07/2024] [Accepted: 04/21/2024] [Indexed: 05/03/2024]
Abstract
Low temperature stress poses a significant challenge to the productivity of horticultural crops. The dynamic expression of cold-responsive genes plays a crucial role in plant cold tolerance. While NAC transcription factors have been extensively studied in plant growth and development, their involvement in regulating plant cold tolerance remains poorly understood. In this study, we focused on the identification and characterisation of SlNAC3 as the most rapid and robust responsive gene in tomato under low temperature conditions. Manipulating SlNAC3 through overexpression or silencing resulted in reduced or enhanced cold tolerance, respectively. Surprisingly, we discovered a negative correlation between the expression of CBF and cold tolerance in the SlNAC3 transgenic lines. These findings suggest that SlNAC3 regulates tomato cold tolerance likely through a CBF-independent pathway. Furthermore, we conducted additional investigations to identify the molecular mechanisms underlying SINAC3-mediated cold tolerance in tomatoes. Our results revealed that SlNAC3 controls the transcription of ethylene biosynthetic genes, thereby bursting ethylene release in response to cold stress. Indeed, the silencing of these genes led to an augmentation in cold tolerance. This discovery provides valuable insights into the regulatory pathways involved in ethylene-mediated cold tolerance in tomatoes, offering potential strategies for developing innovative approaches to enhance cold stress resilience in this economically important crop species.
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Affiliation(s)
- Tao Wang
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
| | - Xuemin Ma
- Umeå Plant Science Centre, UMEÅ, Sweden
| | - Ying Chen
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
| | - Cuicui Wang
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
| | - Zhenxiao Xia
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
| | - Zixi Liu
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
| | - Lihong Gao
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
| | - Wenna Zhang
- Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
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Ou X, Sun L, Chen Y, Zhao Z, Jian W. Characteristics of NAC transcription factors in Solanaceae crops and their roles in responding to abiotic and biotic stresses. Biochem Biophys Res Commun 2024; 709:149840. [PMID: 38564941 DOI: 10.1016/j.bbrc.2024.149840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/23/2024] [Accepted: 03/26/2024] [Indexed: 04/04/2024]
Abstract
As one of the largest transcription factor (TF) families in plants, the NAC (NAM, ATAF1/2, and CUC2) family plays important roles in response pathways to various abiotic and biotic stresses, such as drought, high salinity, low temperature, and pathogen infection. Although, there are a number of reviews on the involvement of NAC TF in plant responses to biotic and abiotic stresses, most of them are focused on the model plants Arabidopsis thaliana and Oryza sativa, and there is a lack of systematic evaluation of specific species. Solanaceae, the world's third most significant cash crop, has been seriously affected by environmental disturbances in recent years in terms of yield and quality, posing a severe threat to global food security. This review focuses on the functional roles of NAC transcription factors in response to external stresses involved in five important Solanaceae crops: tomato, potato, pepper, eggplant and tobacco, and analyzes the affinities between them. It will provide resources for stress-resistant breeding of Solanaceae crops using transgenic technology.
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Affiliation(s)
- Xiaogang Ou
- Key Laboratory of Plant Environmental Adaptation Biology of Chongqing, College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Lixinyu Sun
- Key Laboratory of Plant Environmental Adaptation Biology of Chongqing, College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Yu Chen
- Key Laboratory of Plant Environmental Adaptation Biology of Chongqing, College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Zhengwu Zhao
- Key Laboratory of Plant Environmental Adaptation Biology of Chongqing, College of Life Sciences, Chongqing Normal University, Chongqing 401331, China
| | - Wei Jian
- Key Laboratory of Plant Environmental Adaptation Biology of Chongqing, College of Life Sciences, Chongqing Normal University, Chongqing 401331, China.
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Wang P, Wang D, Li Y, Li J, Liu B, Wang Y, Gao C. The transcription factor ThDOF8 binds to a novel cis-element and mediates molecular responses to salt stress in Tamarix hispida. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:3171-3187. [PMID: 38400756 DOI: 10.1093/jxb/erae070] [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: 11/04/2023] [Accepted: 02/23/2024] [Indexed: 02/26/2024]
Abstract
Salt stress is a common abiotic factor that restricts plant growth and development. As a halophyte, Tamarix hispida is a good model plant for exploring salt-tolerance genes and regulatory mechanisms. DNA-binding with one finger (DOF) is an important transcription factor (TF) that influences and controls various signaling substances involved in diverse biological processes related to plant growth and development, but the regulatory mechanisms of DOF TFs in response to salt stress are largely unknown in T. hispida. In the present study, a newly identified Dof gene, ThDOF8, was cloned from T. hispida, and its expression was found to be induced by salt stress. Transient overexpression of ThDOF8 enhanced T. hispida salt tolerance by enhancing proline levels, and increasing the activities of the antioxidant enzymes superoxide dismutase (SOD) and peroxidase (POD). These results were also verified in stably transformed Arabidopsis. Results from TF-centered yeast one-hybrid (Y1H) assays and EMSAs showed that ThDOF8 binds to a newly identified cis-element (TGCG). Expression profiling by gene chip analysis identified four potential direct targets of ThDOF8, namely the cysteine-rich receptor-like kinases genes, CRK10 and CRK26, and two glutamate decarboxylase genes, GAD41, and GAD42, and these were further verified by ChIP-quantitative-PCR, EMSAs, Y1H assays, and β-glucuronidase enzyme activity assays. ThDOF8 can bind to the TGCG element in the promoter regions of its target genes, and transient overexpression of ThCRK10 also enhanced T. hispida salt tolerance. On the basis of our results, we propose a new regulatory mechanism model, in which ThDOF8 binds to the TGCG cis-element in the promoter of the target gene CRK10 to regulate its expression and improve salt tolerance in T. hispida. This study provides a basis for furthering our understanding the role of DOF TFs and identifying other downstream candidate genes that have the potential for improving plant salt tolerance via molecular breeding.
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Affiliation(s)
- Peilong Wang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, China
- Zhejiang Institute of Subtropical Crops, Zhejiang Academy of Agricultural Sciences, Wenzhou, 325000, China
| | - Danni Wang
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, China
| | - Yongxi Li
- 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
| | - Baichao Liu
- State Key Laboratory of Tree Genetics and Breeding (Northeast Forestry University), Harbin 150040, China
| | - Yuanyuan 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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Liu C, Zhao M, Ma H, Zhang Y, Liu Q, Liu S, Wang Y, Wang K, Zhang M, Wang Y. The NAC Transcription Factor PgNAC41-2 Gene Involved in the Regulation of Ginsenoside Biosynthesis in Panax ginseng. Int J Mol Sci 2023; 24:11946. [PMID: 37569353 PMCID: PMC10418625 DOI: 10.3390/ijms241511946] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 07/21/2023] [Accepted: 07/23/2023] [Indexed: 08/13/2023] Open
Abstract
Ginseng (Panax ginseng C.A. Meyer) is a perennial herb of the Araliaceae family, a traditional and valuable Chinese herb in China. The main active component of ginseng is ginsenoside. The NAC transcription factors belong to a large family of plant-specific transcription factors, which are involved in growth and development, stress response and secondary metabolism. In this study, we mapped the NAC gene family on 24 pairs of ginseng chromosomes and found numerous gene replications in the genome. The NAC gene PgNAC41-2, found to be highly related to ginsenoside synthesis, was specifically screened. The phylogeny and expression pattern of the PgNAC41-2 gene were analyzed, along with the derived protein sequence, and a structure model was generated. Furthermore, the PgNAC41-2 gene was cloned and overexpressed by a Rhizobium rhizogenes mediated method, using ginseng petioles as receptor material. The saponin content of the transformed material was analyzed to verify the function of the NAC transcription factor in ginseng. Our results indicate that the PgNAC41-2 gene positively regulates the biosynthesis of saponins.
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Affiliation(s)
- Chang Liu
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (C.L.); (H.M.); (Y.Z.); (Q.L.); (S.L.); (K.W.); (M.Z.)
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun 130118, China
| | - Mingzhu Zhao
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (C.L.); (H.M.); (Y.Z.); (Q.L.); (S.L.); (K.W.); (M.Z.)
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun 130118, China
| | - Hedan Ma
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (C.L.); (H.M.); (Y.Z.); (Q.L.); (S.L.); (K.W.); (M.Z.)
| | - Yu Zhang
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (C.L.); (H.M.); (Y.Z.); (Q.L.); (S.L.); (K.W.); (M.Z.)
| | - Qian Liu
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (C.L.); (H.M.); (Y.Z.); (Q.L.); (S.L.); (K.W.); (M.Z.)
| | - Sizhang Liu
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (C.L.); (H.M.); (Y.Z.); (Q.L.); (S.L.); (K.W.); (M.Z.)
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun 130118, China
| | - Yanfang Wang
- Laboratory for Cultivation and Breeding of Medicinal Plants of National Administration of Traditional Chinese Medicine, Jilin Agricultural University, Changchun 130118, China;
| | - Kangyu Wang
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (C.L.); (H.M.); (Y.Z.); (Q.L.); (S.L.); (K.W.); (M.Z.)
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun 130118, China
| | - Meiping Zhang
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (C.L.); (H.M.); (Y.Z.); (Q.L.); (S.L.); (K.W.); (M.Z.)
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun 130118, China
| | - Yi Wang
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; (C.L.); (H.M.); (Y.Z.); (Q.L.); (S.L.); (K.W.); (M.Z.)
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun 130118, China
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Tan S, Sha Y, Sun L, Li Z. Abiotic Stress-Induced Leaf Senescence: Regulatory Mechanisms and Application. Int J Mol Sci 2023; 24:11996. [PMID: 37569371 PMCID: PMC10418887 DOI: 10.3390/ijms241511996] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/14/2023] [Accepted: 07/19/2023] [Indexed: 08/13/2023] Open
Abstract
Leaf senescence is a natural phenomenon that occurs during the aging process of plants and is influenced by various internal and external factors. These factors encompass plant hormones, as well as environmental pressures such as inadequate nutrients, drought, darkness, high salinity, and extreme temperatures. Abiotic stresses accelerate leaf senescence, resulting in reduced photosynthetic efficiency, yield, and quality. Gaining a comprehensive understanding of the molecular mechanisms underlying leaf senescence in response to abiotic stresses is imperative to enhance the resilience and productivity of crops in unfavorable environments. In recent years, substantial advancements have been made in the study of leaf senescence, particularly regarding the identification of pivotal genes and transcription factors involved in this process. Nevertheless, challenges remain, including the necessity for further exploration of the intricate regulatory network governing leaf senescence and the development of effective strategies for manipulating genes in crops. This manuscript provides an overview of the molecular mechanisms that trigger leaf senescence under abiotic stresses, along with strategies to enhance stress tolerance and improve crop yield and quality by delaying leaf senescence. Furthermore, this review also highlighted the challenges associated with leaf senescence research and proposes potential solutions.
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Affiliation(s)
| | | | - Liwei Sun
- State Key Laboratory of Tree Genetics and Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
| | - Zhonghai Li
- State Key Laboratory of Tree Genetics and Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
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Li Z, Duan S, Lu B, Yang C, Ding H, Shen H. Spraying alginate oligosaccharide improves photosynthetic performance and sugar accumulation in citrus by regulating antioxidant system and related gene expression. FRONTIERS IN PLANT SCIENCE 2023; 13:1108848. [PMID: 36793994 PMCID: PMC9923110 DOI: 10.3389/fpls.2022.1108848] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 12/28/2022] [Indexed: 05/31/2023]
Abstract
Alginate oligosaccharides (AOS) are functional substances in seaweed extracts that regulate crop quality and stress tolerance. In this paper, the effects of AOS spray application on the antioxidant system, photosynthesis and fruit sugar accumulation in citrus was investigated through a two-year field experiment. The results showed that 8-10 spray cycles of 300-500 mg L-1 AOS (once per 15 days) increased soluble sugar and soluble solid contents by 7.74-15.79% and 9.98-15.35%, respectively, from citrus fruit expansion to harvesting. Compared with the control, the antioxidant enzyme activity and the expression of some related genes in citrus leaves started to increase significantly after the 1st AOS spray application, while the net photosynthetic rate of leaves increased obviously only after the 3rd AOS spray cycle, and the soluble sugar content of AOS-treated leaves increased by 8.43-12.96% at harvest. This suggests that AOS may enhance photosynthesis and sugar accumulation in leaves by antioxidant system regulation. Moreover, analysis of fruit sugar metabolism showed that during the 3rd to 8th AOS spray cycles, AOS treatment increased the activity of enzymes related to sucrose synthesis (SPS, SSs), upregulated the expression of sucrose metabolism (CitSPS1, CitSPS2, SUS) and transport (SUC3, SUC4) genes, and promoted the accumulation of sucrose, glucose and fructose in fruits. Notably, the concentration of soluble sugars in citrus fruits was significantly reduced at all treatments with 40% reduction in leaves of the same branch, but the loss of soluble sugars in AOS-treated fruits (18.18%) was higher than that in the control treatment (14.10%). It showed that there was a positive effect of AOS application on leaf assimilation product transport and fruit sugar accumulation. In summary, AOS application may improve fruit sugar accumulation and quality by regulating the leaf antioxidant system, increasing the photosynthetic rate and assimilate product accumulation, and promoting sugar transfer from leaves to fruits. This study shows the potential application of AOS in the production of citrus fruits for sugar enhancement.
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Affiliation(s)
- Zhiming Li
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Songpo Duan
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Bosi Lu
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Chunmei Yang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
| | - Hanqing Ding
- Guangdong Nongken Tropical Agriculture Research Institute Co., Guangzhou, China
| | - Hong Shen
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, China
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Zhang H, Hu Y, Gu B, Cui X, Zhang J. VaMYB44 transcription factor from Chinese wild Vitis amurensis negatively regulates cold tolerance in transgenic Arabidopsis thaliana and V. vinifera. PLANT CELL REPORTS 2022; 41:1673-1691. [PMID: 35666271 DOI: 10.1007/s00299-022-02883-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/16/2022] [Indexed: 06/15/2023]
Abstract
Heterologous expression of VaMYB44 gene in Arabidopsis and V. vinifera cv. 'Thompson Seedless' increases cold sensitivity, which is mediated by the interaction of VaMYC2 and VaTIFY5A with VaMYB44 MYB transcription factors play critical roles in plant stress response. However, the function of MYB44 under low temperature stress is largely unknown in grapes. Here, we isolated a VaMYB44 gene from Chinese wild Vitis amurensis acc. 'Shuangyou' (cold-resistant). The VaMYB44 is expressed in various organs and has lower expression levels in stems and young leaves. Exposure of the cold-sensitive V. vinifera cv. 'Thompson Seedless' and cold-resistant 'Shuangyou' grapevines to cold stress (-1 °C) resulted in differential expression of MYB44 in leaves with the former reaching 14 folds of the latter after 3 h of cold stress. Moreover, the expression of VaMYB44 was induced by exogenous ethylene, abscisic acid, and methyl jasmonate in the leaves of 'Shuangyou'. Notably, the subcellular localization assay identified VaMYB44 in the nucleus. Interestingly, heterologous expression of VaMYB44 in Arabidopsis and 'Thompson Seedless' grape increased freezing-induced damage compared to their wild-type counterparts. Accordingly, the transgenic lines had higher malondialdehyde content and electrolyte permeability, and lower activities of superoxide dismutase, peroxidase, and catalase. Moreover, the expression levels of some cold resistance-related genes decreased in transgenic lines. Protein interaction assays identified VaMYC2 and VaTIFY5A as VaMYB44 interacting proteins, and VaMYC2 could bind to the VaMYB44 promoter and promote its transcription. In conclusion, the study reveals VaMYB44 as the negative regulator of cold tolerance in transgenic Arabidopsis and transgenic grapes, and VaMYC2 and VaTIFY5A are involved in the cold sensitivity of plants by interacting with VaMYB44.
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Affiliation(s)
- Hongjuan Zhang
- College of Horticulture, Northwest A&F University, Yangling, Xianyang, 712100, Shaanxi, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Xianyang, 712100, Shaanxi, China
- State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Xianyang, 712100, Shaanxi, China
| | - Yafan Hu
- College of Horticulture, Northwest A&F University, Yangling, Xianyang, 712100, Shaanxi, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Xianyang, 712100, Shaanxi, China
- State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Xianyang, 712100, Shaanxi, China
| | - Bao Gu
- College of Horticulture, Northwest A&F University, Yangling, Xianyang, 712100, Shaanxi, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Xianyang, 712100, Shaanxi, China
- State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Xianyang, 712100, Shaanxi, China
| | - Xiaoyue Cui
- College of Horticulture, Northwest A&F University, Yangling, Xianyang, 712100, Shaanxi, China
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Xianyang, 712100, Shaanxi, China
- State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Xianyang, 712100, Shaanxi, China
| | - Jianxia Zhang
- College of Horticulture, Northwest A&F University, Yangling, Xianyang, 712100, Shaanxi, China.
- Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China, Ministry of Agriculture, Yangling, Xianyang, 712100, Shaanxi, China.
- State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Xianyang, 712100, Shaanxi, China.
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Park SJ, Park S, Kim Y, Hyeon DY, Park H, Jeong J, Jeong U, Yoon YS, You D, Kwak J, Timilsina R, Hwang D, Kim J, Woo HR. Ethylene responsive factor34 mediates stress-induced leaf senescence by regulating salt stress-responsive genes. PLANT, CELL & ENVIRONMENT 2022; 45:1719-1733. [PMID: 35312081 DOI: 10.1111/pce.14317] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 01/29/2022] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
Leaf senescence proceeds with age but is modulated by various environmental stresses and hormones. Salt stress is one of the most well-known environmental stresses that accelerate leaf senescence. However, the molecular mechanisms that integrate salt stress signalling with leaf senescence programmes remain elusive. In this study, we characterised the role of ETHYLENE RESPONSIVE FACTOR34 (ERF34), an Arabidopsis APETALA2 (AP2)/ERF family transcription factor, in leaf senescence. ERF34 was differentially expressed under various leaf senescence-inducing conditions, and negatively regulated leaf senescence induced by age, dark, and salt stress. ERF34 also promoted salt stress tolerance at different stages of the plant life cycle such as seed germination and vegetative growth. Transcriptome analysis revealed that the overexpression of ERF34 increased the transcript levels of salt stress-responsive genes including COLD-REGULATED15A (COR15A), EARLY RESPONSIVE TO DEHYDRATION10 (ERD10), and RESPONSIVE TO DESICCATION29A (RD29A). Moreover, ERF34 directly bound to ERD10 and RD29A promoters and activated their expression. Our findings indicate that ERF34 plays a key role in the convergence of the salt stress response with the leaf senescence programmes, and is a potential candidate for crop improvement, particularly by enhancing salt stress tolerance.
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Affiliation(s)
- Sung-Jin Park
- Center for Plant Aging Research, Institute for Basic Science (IBS), Daegu, Korea
| | - Sanghoon Park
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Korea
| | - Yongmin Kim
- Department of Biological Sciences, Chungnam National University, Daejeon, Korea
| | - Do Young Hyeon
- School of Biological Science, Seoul National University, Seoul, Korea
| | - Hyunsoo Park
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Korea
| | - Junyong Jeong
- Department of Biological Sciences, Chungnam National University, Daejeon, Korea
| | - Ukcheol Jeong
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Korea
| | - Yeong Seon Yoon
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Korea
| | - Daesang You
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Korea
| | - Junmin Kwak
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Korea
| | - Rupak Timilsina
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Korea
| | - Daehee Hwang
- School of Biological Science, Seoul National University, Seoul, Korea
| | - Jeongsik Kim
- Faculty of Science Education and Interdisciplinary Graduate Program in Advanced Convergence Technology and Science, Jeju National University, Jeju, Korea
| | - Hye Ryun Woo
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Korea
- New Biology Research Center, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, Korea
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10
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Drought tolerance improvement in Solanum lycopersicum: an insight into "OMICS" approaches and genome editing. 3 Biotech 2022; 12:63. [PMID: 35186660 PMCID: PMC8825918 DOI: 10.1007/s13205-022-03132-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/24/2022] [Indexed: 12/16/2022] Open
Abstract
Solanum lycopersicum (tomato) is an internationally acclaimed vegetable crop that is grown worldwide. However, drought stress is one of the most critical challenges for tomato production, and it is a crucial task for agricultural biotechnology to produce drought-resistant cultivars. Although breeders have done a lot of work on the tomato to boost quality and quantity of production and enhance resistance to biotic and abiotic stresses, conventional tomato breeding approaches have been limited to improving drought tolerance because of the intricacy of drought traits. Many efforts have been made to better understand the mechanisms involved in adaptation and tolerance to drought stress in tomatoes throughout the years. "Omics" techniques, such as genomics, transcriptomics, proteomics, and metabolomics in combination with modern sequencing technologies, have tremendously aided the discovery of drought-responsive genes. In addition, the availability of biotechnological tools, such as plant transformation and the recently developed genome editing system for tomatoes, has opened up wider opportunities for validating the function of drought-responsive genes and the generation of drought-tolerant varieties. This review highlighted the recent progresses for tomatoes improvement against drought stress through "omics" and "multi-omics" technologies including genetic engineering. We have also discussed the roles of non-coding RNAs and genome editing techniques for drought stress tolerance improvement in tomatoes.
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11
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Song C, Wu M, Zhou Y, Gong Z, Yu W, Zhang Y, Yang Z. NAC-mediated membrane lipid remodeling negatively regulates fruit cold tolerance. HORTICULTURE RESEARCH 2022; 9:uhac039. [PMID: 35531317 PMCID: PMC9071380 DOI: 10.1093/hr/uhac039] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 02/06/2022] [Indexed: 05/11/2023]
Abstract
Low temperatures are known to destroy cell membranes' structural integrity by affecting the remodeling of their phospholipids. Fruits stored at low temperature are prone to chilling injury, characterized by discoloration, absence of ripening, surface pitting, growth inhibition, flavor loss, decay, and wilting. Phosphatidic acid, a vital second-messenger lipid in plants, is known to accumulate in response to different kinds of stress stimuli. However, the regulatory mechanism of its production from the degradation of phospholipids remains poorly understood. We identified two cold-responsive NAC (NAM/ATAF1/CUC2) transcription factors from bananas, namely, MaNAC25 and MaNAC28, which negatively regulated cold tolerance in banana fruits by upregulating the expression of phospholipid degradation genes in banana fruits. Furthermore, MaNAC25 and MaNAC28 formed a positive feedback loop to induce phospholipid degradation and produce phosphatidic acid. In contrast, ethylene directly inhibited the degradation of phospholipids in banana and transgenic tomato fruits. In addition, ethylene reduced the activity of MaNAC25 and MaNAC28, thereby inhibiting phospholipid degradation. To conclude, NAC-mediated membrane lipid remodeling negatively regulates the cold tolerance of banana and transgenic tomato fruits.
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Affiliation(s)
- Chunbo Song
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, Zhejiang 315100, China
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong 266100, China
| | - Mengbo Wu
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Ying Zhou
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Zehao Gong
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Weiwei Yu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Yi Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources, Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
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12
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Ritonga FN, Ngatia JN, Wang Y, Khoso MA, Farooq U, Chen S. AP2/ERF, an important cold stress-related transcription factor family in plants: A review. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2021; 27:1953-1968. [PMID: 34616115 PMCID: PMC8484489 DOI: 10.1007/s12298-021-01061-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/19/2021] [Accepted: 09/02/2021] [Indexed: 05/07/2023]
Abstract
Increasing the vulnerability of plants especially crops to a wide range of cold stress reduces plant growth, development, yield production, and plant distribution. Cold stress induces physiological, morphological, biochemical, phenotypic, and molecular changes in plants. Transcription factor (TF) is one of the most important regulators that mediate gene expression. TF is activated by the signal transduction pathway, together with cis-acting element modulate the transcription of cold-responsive genes which contribute to increasing cold tolerance in plants. Here, AP2/ERF TF family is one of the most important cold stress-related TF families that along with other TF families, such as WRKY, bHLH, bZIP, MYB, NAC, and C2H2 interrelate to enhance cold stress tolerance. Over the past decade, significant progress has been found to solve the role of transcription factors (TFs) in improving cold tolerance in plants, such as omics analysis. Furthermore, numerous studies have identified and characterized the complexity of cold stress mechanisms among TFs or between TFs and other factors (endogenous and exogenous) including phytohormones, eugenol, and light. The role, function, and relationship among these TFs or between TFs and other factors to enhance cold tolerance still need to be clarified. Here, the current study analysed the role of AP2/ERF TF and the linkages among AP2/ERF with MYB, WRKY, bZIP, bHLH, C2H2, or NAC against cold stress tolerance.
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Affiliation(s)
| | - Jacob Njaramba Ngatia
- College of Wildlife and Protected Areas, Northeast Forestry University, Harbin, 150040 China
| | - Yiran Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040 China
| | - Muneer Ahmed Khoso
- Key Laboratory of Saline-Alkali Vegetation Ecology Restoration, Ministry of Education, Department of Life Science, Northeast Forestry University, Harbin, 150040 China
| | - Umar Farooq
- College of Life Science, Northeast Forestry University, Harbin, 150040 China
| | - Su Chen
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040 China
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13
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Wang H, Li T, Li W, Wang W, Zhao H. Identification and analysis of Chrysanthemum nankingense NAC transcription factors and an expression analysis of OsNAC7 subfamily members. PeerJ 2021; 9:e11505. [PMID: 34123596 PMCID: PMC8164415 DOI: 10.7717/peerj.11505] [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: 02/05/2021] [Accepted: 05/03/2021] [Indexed: 11/26/2022] Open
Abstract
NAC (NAM, ATAF1-2, and CUC2) transcription factors (TFs) play a vital role in plant growth and development, as well as in plant response to biotic and abiotic stressors (Duan et al., 2019; Guerin et al., 2019). Chrysanthemum is a plant with strong stress resistance and adaptability; therefore, a systematic study of NAC TFs in chrysanthemum is of great significance for plant breeding. In this study, 153 putative NAC TFs were identified based on the Chrysanthemum nankingense genome. According to the NAC family in Arabidopsis and rice, a rootless phylogenetic tree was constructed, in which the 153 CnNAC TFs were divided into two groups and 19 subfamilies. Moreover, the expression levels of 12 CnNAC TFs belonging to the OsNAC7 subfamily were analyzed in C. nankingense under osmotic and salt stresses, and different tissues were tested during different growth periods. The results showed that these 12 OsNAC7 subfamily members were involved in the regulation of root and stem growth, as well as in the regulation of drought and salt stresses. Finally, we investigated the function of the CHR00069684 gene, and the results showed that CHR00069684 could confer improved salt and low temperature resistance, enhance ABA sensitivity, and lead to early flowering in tobacco. It was proved that members of the OsNAC7 subfamily have dual functions including the regulation of resistance and the mediation of plant growth and development. This study provides comprehensive information on analyzing the function of CnNAC TFs, and also reveals the important role of OsNAC7 subfamily genes in response to abiotic stress and the regulation of plant growth. These results provide new ideas for plant breeding to control stress resistance and growth simultaneously.
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Affiliation(s)
- Hai Wang
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing, China
- College of Landscape Architecture, Beijing Forestry University, Beijing, China
| | - Tong Li
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing, China
- College of Landscape Architecture, Beijing Forestry University, Beijing, China
| | - Wei Li
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Wang Wang
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing, China
- College of Landscape Architecture, Beijing Forestry University, Beijing, China
| | - Huien Zhao
- Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, Beijing, China
- College of Landscape Architecture, Beijing Forestry University, Beijing, China
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14
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Knockout of Auxin Response Factor SlARF4 Improves Tomato Resistance to Water Deficit. Int J Mol Sci 2021; 22:ijms22073347. [PMID: 33805879 PMCID: PMC8037468 DOI: 10.3390/ijms22073347] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/20/2021] [Accepted: 03/22/2021] [Indexed: 12/25/2022] Open
Abstract
Auxin response factors (ARFs) play important roles in various plant physiological processes; however, knowledge of the exact role of ARFs in plant responses to water deficit is limited. In this study, SlARF4, a member of the ARF family, was functionally characterized under water deficit. Real-time fluorescence quantitative polymerase chain reaction (PCR) and β-glucuronidase (GUS) staining showed that water deficit and abscisic acid (ABA) treatment reduced the expression of SlARF4. SlARF4 was expressed in the vascular bundles and guard cells of tomato stomata. Loss of function of SlARF4 (arf4) by using Clustered Regularly Interspaced Short Palindromic Repeats/Cas 9 (CRISPR/Cas 9) technology enhanced plant resistance to water stress and rehydration ability. The arf4 mutant plants exhibited curly leaves and a thick stem. Malondialdehyde content was significantly lower in arf4 mutants than in wildtype plants under water stress; furthermore, arf4 mutants showed higher content of antioxidant substances, superoxide dismutase, actual photochemical efficiency of photosystem II (PSII), and catalase activities. Stomatal and vascular bundle morphology was changed in arf4 mutants. We identified 628 differentially expressed genes specifically expressed under water deficit in arf4 mutants; six of these genes, including ABA signaling pathway-related genes, were differentially expressed between the wildtype and arf4 mutants under water deficit and unlimited water supply. Auxin responsive element (AuxRE) elements were found in these genes' promoters indicating that SlARF4 participates in ABA signaling pathways by regulating the expression of SlABI5/ABF and SCL3, thereby influencing stomatal morphology and vascular bundle development and ultimately improving plant resistance to water deficit.
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15
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Hou D, Zhao Z, Hu Q, Li L, Vasupalli N, Zhuo J, Zeng W, Wu A, Lin X. PeSNAC-1 a NAC transcription factor from moso bamboo (Phyllostachys edulis) confers tolerance to salinity and drought stress in transgenic rice. TREE PHYSIOLOGY 2020; 40:1792-1806. [PMID: 32761243 DOI: 10.1093/treephys/tpaa099] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 08/02/2020] [Indexed: 05/16/2023]
Abstract
NAC (NAM, AFAT and CUC) proteins play necessary roles in plant response to environmental stresses. However, the functional roles of NAC genes in moso bamboo (Phyllostachys edulis), an essential economic perennial woody bamboo species, are not well documented. In this study, we retrieved 152 PeNAC genes from the moso bamboo V2 genome, and PeSNAC-1 was isolated and functionally characterized. PeSNAC-1 was localized in the nucleus and had no transactivation activity in yeast. PeSNAC-1 extremely expressed in rhizome and young roots (0.1 and 0.5 cm) and was significantly induced by drought and salt treatments but repressed by abscisic acid (ABA), methyl jasmonate and high temperature (42 °C) in moso bamboo. Under water shortage and salinity conditions, survival ratios, Fv/Fm values, physiological indexes such as activities of superoxide dismutase, peroxidase and catalase and contents of malondialdehyde, H2O2 and proline were significantly higher in transgenic rice than the wild type, which suggests enhanced tolerance to drought and salt stress in PeSANC-1 overexpressed plants. Transcript levels of Na+/H+ antiporter and Na+ transporter genes (OsSOS1, OsNHX1 and OsHKT1;5), ABA signaling and biosynthesis genes (OsABI2, OsRAB16, OsPP2C68, OsLEA3-1, OsLEA3, OsNCED3, OsNCED4 and OsNCED5) and ABA-independent genes (OsDREB1A, OsDREB1B and OsDREB2A) were substantially higher in transgenic as compared with the wild type. Moreover, protein interaction analysis revealed that PeSNAC-1 could interact with stress responsive PeSNAC-2/4 and PeNAP-1/4/5 in both yeast and plant cells, which indicates a synergistic effect of those proteins in regulating the moso bamboo stress response. Our data demonstrate that PeSNAC-1 likely improved salt and drought stress tolerance via modulating gene regulation in both ABA-dependent and independent signaling pathways in transgenic rice. In addition, PeSNAC-1 functions as an important positive stress regulator in moso bamboo, participating in PeSNAC-1 and PeSNAC-2/4 or PeSNAC-1 and PeNAP-1/4/5 interaction networks.
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Affiliation(s)
- Dan Hou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Zhongyu Zhao
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Qiutao Hu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Ling Li
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Naresh Vasupalli
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Juan Zhuo
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Wei Zeng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
| | - Aimin Wu
- Guangdong Key Laboratory for Innovative Development and Utilization of Forest Plant Germplasm, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China
| | - Xinchun Lin
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin'An, 311300 Zhejiang, China
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16
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Diao P, Chen C, Zhang Y, Meng Q, Lv W, Ma N. The role of NAC transcription factor in plant cold response. PLANT SIGNALING & BEHAVIOR 2020; 15:1785668. [PMID: 32662739 PMCID: PMC8550289 DOI: 10.1080/15592324.2020.1785668] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The NAC transcription factor (TF) is one of the largest families of TFs in plants and plays an important role in plant growth, development, and response to environmental stress. The structural and functional characteristics of NAC TFs have been uncovered in the past years, including sequence binding features of the DNA-binding domain located in the N-terminus and dynamic interplay between the domain located at the C-terminus and other proteins. Studies on NAC TF are increasing in number; these studies distinctly contribute to our understanding of the regulatory networks of NAC-mediated complex signaling and transcriptional reprogramming. Previous studies have indicated that NAC TFs are key regulators of the plant stress response. However, these studies have been for six years so far and mainly focused on drought and salt stress. There are relatively few reports about NAC TFs in plant cold signal pathway and no related reviews have been published. In this review article, we summarize the structural features of NAC TFs, the target genes, upstream regulators and interaction proteins of stress-responsive NAC TFs, and the roles NAC TFs play in plant cold stress signal pathway.
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Affiliation(s)
- Pengfei Diao
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Tai’an, Shandong, China
| | - Chong Chen
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Tai’an, Shandong, China
- Nana Ma State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Daizong Street, Tai’an, Shandong, 271018, China
| | - Yuzhen Zhang
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Tai’an, Shandong, China
| | - Qingwei Meng
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Tai’an, Shandong, China
| | - Wei Lv
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Tai’an, Shandong, China
- CONTACT Wei Lv
| | - Nana Ma
- State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Tai’an, Shandong, China
- Nana Ma State Key Laboratory of Crop Biology, College of Life Science, Shandong Agricultural University, Daizong Street, Tai’an, Shandong, 271018, China
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17
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Liu Q, Sun C, Han J, Li L, Wang K, Wang Y, Chen J, Zhao M, Wang Y, Zhang M. Identification, characterization and functional differentiation of the NAC gene family and its roles in response to cold stress in ginseng, Panax ginseng C.A. Meyer. PLoS One 2020; 15:e0234423. [PMID: 32525906 PMCID: PMC7289381 DOI: 10.1371/journal.pone.0234423] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 05/26/2020] [Indexed: 11/18/2022] Open
Abstract
The NAC gene family is one of the important plant-specific transcription factor families involved in variety of physiological processes. It has been found in several plant species; however, little is known about the gene family in ginseng, Panax ginseng C.A. Meyer. Here we report identification and systematic analysis of this gene family in ginseng. A total of 89 NAC genes, designated PgNAC01 to PgNAC89, are identified. These genes are alternatively spliced into 251 transcripts at fruiting stage of a four-year-old ginseng plant. The genes of this gene family have five conserved motifs and are clustered into 11 subfamilies, all of which are shared with the genes of the NAC gene families identified in the dicot and monocot model plant species, Arabidopsis and rice. This result indicates that the PgNAC gene family is an ancient and evolutionarily inactive gene family. Gene ontology (GO) analysis shows that the functions of the PgNAC gene family have been substantially differentiated; nevertheless, over 86% the PgNAC transcripts remain functionally correlated. Finally, five of the PgNAC genes, PgNAC05-2, PgNAC41-2, PgNAC48, PgNAC56-1, and PgNAC59, are identified to be involved in plant response to cold stress, suggesting that this gene family plays roles in response to cold stress in ginseng. These results, therefore, provide new insights into functional differentiation and evolution of a gene family in plants and gene resources necessary to comprehensively determine the functions of the PgNAC gene family in response to cold and other abiotic stresses in ginseng.
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Affiliation(s)
- Qian Liu
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, China
- Research Center for Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, China
| | - Chunyu Sun
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, China
- Research Center for Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, China
| | - Jiazhuang Han
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, China
- Research Center for Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, China
| | - Li Li
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, China
- Research Center for Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, China
| | - Kangyu Wang
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, China
- Research Center for Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, China
| | - Yanfang Wang
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, China
- Research Center for Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, China
| | - Jing Chen
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, China
- Research Center for Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, China
| | - Mingzhu Zhao
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, China
- Research Center for Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, China
| | - Yi Wang
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, China
- Research Center for Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, China
- * E-mail: (YW); (MZ)
| | - Meiping Zhang
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, China
- Research Center for Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, China
- * E-mail: (YW); (MZ)
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18
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Javed T, Shabbir R, Ali A, Afzal I, Zaheer U, Gao SJ. Transcription Factors in Plant Stress Responses: Challenges and Potential for Sugarcane Improvement. PLANTS (BASEL, SWITZERLAND) 2020; 9:E491. [PMID: 32290272 PMCID: PMC7238037 DOI: 10.3390/plants9040491] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/08/2020] [Accepted: 04/08/2020] [Indexed: 02/06/2023]
Abstract
Increasing vulnerability of crops to a wide range of abiotic and biotic stresses can have a marked influence on the growth and yield of major crops, especially sugarcane (Saccharum spp.). In response to various stresses, plants have evolved a variety of complex defense systems of signal perception and transduction networks. Transcription factors (TFs) that are activated by different pathways of signal transduction and can directly or indirectly combine with cis-acting elements to modulate the transcription efficiency of target genes, which play key regulators for crop genetic improvement. Over the past decade, significant progresses have been made in deciphering the role of plant TFs as key regulators of environmental responses in particular important cereal crops; however, a limited amount of studies have focused on sugarcane. This review summarizes the potential functions of major TF families, such as WRKY, NAC, MYB and AP2/ERF, in regulating gene expression in the response of plants to abiotic and biotic stresses, which provides important clues for the engineering of stress-tolerant cultivars in sugarcane.
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Affiliation(s)
- Talha Javed
- National Engineering Research Center for Sugarcane, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (T.J.); (R.S.); (A.A.); (U.Z.)
- Seed Physiology Lab., Department of Agronomy, University of Agriculture, Faisalabad-38040, Pakistan;
| | - Rubab Shabbir
- National Engineering Research Center for Sugarcane, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (T.J.); (R.S.); (A.A.); (U.Z.)
- Seed Physiology Lab., Department of Agronomy, University of Agriculture, Faisalabad-38040, Pakistan;
| | - Ahmad Ali
- National Engineering Research Center for Sugarcane, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (T.J.); (R.S.); (A.A.); (U.Z.)
| | - Irfan Afzal
- Seed Physiology Lab., Department of Agronomy, University of Agriculture, Faisalabad-38040, Pakistan;
| | - Uroosa Zaheer
- National Engineering Research Center for Sugarcane, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (T.J.); (R.S.); (A.A.); (U.Z.)
| | - San-Ji Gao
- National Engineering Research Center for Sugarcane, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (T.J.); (R.S.); (A.A.); (U.Z.)
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19
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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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20
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Zhang H, Ma F, Wang X, Liu S, Saeed UH, Hou X, Zhang Y, Luo D, Meng Y, Zhang W, Abid K, Chen R. Molecular and Functional Characterization of CaNAC035, an NAC Transcription Factor From Pepper ( Capsicum annuum L.). FRONTIERS IN PLANT SCIENCE 2020; 11:14. [PMID: 32117364 PMCID: PMC7011960 DOI: 10.3389/fpls.2020.00014] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 01/08/2020] [Indexed: 05/16/2023]
Abstract
NAC (NAM, ATAF1/2, and CUC2) proteins are the plant-specific transcription factors (TFs) which are important in plant response to abiotic stresses. However, knowledge about the functional role that NACs play in pepper abiotic stress tolerance is limited. In this study, we isolated a NAC TF gene, CaNAC035, from pepper (Capsicum annuum L.), where the protein is localized in the nucleus and functions as a transcriptional activator. CaNAC035 expression is induced by low and high temperatures, osmotic stress, salt, gibberellic acid (GA), methyl-jasmonic acid (MeJA), salicylic acid (SA), and abscisic acid (ABA). To understand the function of CaNAC035 in the abiotic stress responsep, we used virus-induced gene silencing in pepper to knockdown the CaNAC035 and overexpressed the CaNAC035 in Arabidopsis. The results showed that pepper seedlings in which CaNAC035 was silenced, showed more damage than the control pepper plants after cold, NaCl, and mannitol treatments. Correspondingly increased electrolyte leakage, a higher level of malondialdehyde (MDA), H2O2, and superoxide radicals were found after cold treatments. CaNAC035-silenced seedlings exhibited lower chlorophyll content while CaNAC035-overexpressed Arabidopsis plants had higher germination rate and fresh weight after mannitol and NaCl treatments. We also reported 18 proteins that potentially interact with CaNAC035 and may participate in processes such as the stress response, resistance, and photosynthesis. Our results suggest that CaNAC035 is a positive regulator of abiotic stress tolerance in pepper which acts through multiple signaling pathways.
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21
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Trupkin SA, Astigueta FH, Baigorria AH, García MN, Delfosse VC, González SA, Pérez de la Torre MC, Moschen S, Lía VV, Fernández P, Heinz RA. Identification and expression analysis of NAC transcription factors potentially involved in leaf and petal senescence in Petunia hybrida. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 287:110195. [PMID: 31481223 DOI: 10.1016/j.plantsci.2019.110195] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/17/2019] [Accepted: 07/19/2019] [Indexed: 05/23/2023]
Abstract
Progression of leaf senescence depends on several families of transcription factors. In Arabidopsis, the NAC family plays crucial roles in the modulation of leaf senescence; however, the mechanisms involved in this NAC-mediated regulation have not been extensively explored in agronomic species. Petunia hybrida is an ornamental plant that is commonly found worldwide. Decreasing the rate of leaf and petal senescence in P. hybrida is essential for maintaining plant quality. In this study, we examined the NAC-mediated networks involved in regulating senescence in this species. From 41 NAC genes, the expression of which changed in Arabidopsis during leaf senescence, we identified 29 putative orthologs in P. hybrida. Analysis using quantitative real-time-PCR indicated that 24 genes in P. hybrida changed their transcript levels during natural leaf senescence. Leaf-expressed genes were subsequently assessed in petals undergoing natural and pollination-induced senescence. Expression data and phylogenetic analysis were used to generate a list of 10-15 candidate genes; 7 of these were considered key regulatory candidates in senescence because of their consistent upregulation in the three senescence processes examined. Altogether, we identified common and distinct patterns of gene expression at different stages of leaf and petal development and during progression of senescence. The results obtained in this study will contribute to the understanding of NAC-mediated regulatory networks in petunia.
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Affiliation(s)
- Santiago A Trupkin
- Instituto de Floricultura, Centro de Investigación de Recursos Naturales, Instituto Nacional de Tecnología Agropecuaria, Hurlingham, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires, Argentina
| | - Francisco H Astigueta
- Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires, Argentina; Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina
| | - Amilcar H Baigorria
- Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina
| | - Martín N García
- Instituto de Agrobiotecnología y Biología Molecular (IABiMo - INTA-CONICET), Centro de Investigaciones en Ciencias Agronómicas y Veterinarias, Instituto Nacional de Tecnología Agropecuaria, Hurlingham, Buenos Aires, Argentina
| | - Verónica C Delfosse
- Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires, Argentina; Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina
| | - Sergio A González
- Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires, Argentina
| | - Mariana Cecilia Pérez de la Torre
- Instituto de Floricultura, Centro de Investigación de Recursos Naturales, Instituto Nacional de Tecnología Agropecuaria, Hurlingham, Buenos Aires, Argentina
| | - Sebastián Moschen
- Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires, Argentina
| | - Verónica V Lía
- Instituto de Agrobiotecnología y Biología Molecular (IABiMo - INTA-CONICET), Centro de Investigaciones en Ciencias Agronómicas y Veterinarias, Instituto Nacional de Tecnología Agropecuaria, Hurlingham, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - Paula Fernández
- Instituto de Agrobiotecnología y Biología Molecular (IABiMo - INTA-CONICET), Centro de Investigaciones en Ciencias Agronómicas y Veterinarias, Instituto Nacional de Tecnología Agropecuaria, Hurlingham, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires, Argentina; Escuela de Ciencia y Tecnología, Universidad Nacional de San Martín, San Martín, Buenos Aires, Argentina.
| | - Ruth A Heinz
- Instituto de Agrobiotecnología y Biología Molecular (IABiMo - INTA-CONICET), Centro de Investigaciones en Ciencias Agronómicas y Veterinarias, Instituto Nacional de Tecnología Agropecuaria, Hurlingham, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Autónoma de Buenos Aires, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina.
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22
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Yong Y, Zhang Y, Lyu Y. A Stress-Responsive NAC Transcription Factor from Tiger Lily (LlNAC2) Interacts with LlDREB1 and LlZHFD4 and Enhances Various Abiotic Stress Tolerance in Arabidopsis. Int J Mol Sci 2019; 20:ijms20133225. [PMID: 31262062 PMCID: PMC6651202 DOI: 10.3390/ijms20133225] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 06/27/2019] [Accepted: 06/27/2019] [Indexed: 11/28/2022] Open
Abstract
Our previous studies have indicated that a partial NAC domain protein gene is strongly up-regulated by cold stress (4 °C) in tiger lily (Lilium lancifolium). In this study, we cloned the full-length of this NAC gene, LlNAC2, to further investigate the function of LlNAC2 in response to various abiotic stresses and the possible involvement in stress tolerance of the tiger lily plant. LlNAC2 was noticeably induced by cold, drought, salt stresses, and abscisic acid (ABA) treatment. Promoter analysis showed that various stress-related cis-acting regulatory elements were located in the promoter of LlNAC2; and the promoter was sufficient to enhance activity of GUS protein under cold, salt stresses and ABA treatment. DREB1 (dehydration-responsive binding protein1) from tiger lily (LlDREB1) was proved to be able to bind to the promoter of LlNAC2 by yeast one-hybrid (Y1H) assay. LlNAC2 was shown to physically interact with LlDREB1 and zinc finger-homeodomain ZFHD4 from the tiger lily (LlZFHD4) by bimolecular fluorescence complementation (BiFC) assay. Overexpressing LlNAC2 in Arabidopsis thaliana showed ABA hypersensitivity and enhanced tolerance to cold, drought, and salt stresses. These findings indicated LlNAC2 is involved in both DREB/CBF-COR and ABA signaling pathways to regulate stress tolerance of the tiger lily.
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Affiliation(s)
- Yubing Yong
- Beijing Key Laboratory of Ornamental Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China
| | - Yue Zhang
- Beijing Key Laboratory of Ornamental Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China
| | - Yingmin Lyu
- Beijing Key Laboratory of Ornamental Germplasm Innovation and Molecular Breeding, National Engineering Research Center for Floriculture, College of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China.
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23
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Jia D, Jiang Q, van Nocker S, Gong X, Ma F. An apple (Malus domestica) NAC transcription factor enhances drought tolerance in transgenic apple plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 139:504-512. [PMID: 31015089 DOI: 10.1016/j.plaphy.2019.04.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 03/28/2019] [Accepted: 04/10/2019] [Indexed: 05/02/2023]
Abstract
Plant NAC proteins constitute one of the largest transcription factor families. They play pivotal functions during responses to various abiotic stresses. However, knowledge on roles of NAC proteins in abiotic stress tolerance as well as corresponding mechanisms has not been fully studied in perennial woody plants, including domesticated apple (Malus domestica). In the present study, we characterized the role of apple MdNAC1 transcription factor in response to drought stress. Apple plants overexpressing MdNAC1 gene exhibited promoted tolerance to drought stress, as evident by reduced water loss and electrolyte leakage in leaves, and maintenance of photosynthesis and photosynthetic pigments content under drought conditions. In addition, the levels of malondialdehyde (MDA) and reactive oxygen species (ROS) were significantly lower for transgenic apple lines than those for nontransgenic plants under drought conditions. This was accompanied by higher activities of several antioxidant enzymes, such as superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as increased expression of the associated genes in transgenic lines. Together, our results indicate that overexpression of the apple MdNAC1 gene enhances drought stress tolerance in apple plants by promoting higher photosynthesis and activities of ROS-scavenging enzymes.
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Affiliation(s)
- Dongfeng Jia
- State Key Laboratory of Crop Stress Biology for Arid Areas / Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling, Shaanxi, 712100, China
| | - Qi Jiang
- State Key Laboratory of Crop Stress Biology for Arid Areas / Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling, Shaanxi, 712100, China
| | - Steven van Nocker
- Department of Horticulture, Michigan State University, East Lansing, Michigan, 48824, USA
| | - Xiaoqing Gong
- State Key Laboratory of Crop Stress Biology for Arid Areas / Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling, Shaanxi, 712100, China.
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas / Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling, Shaanxi, 712100, China.
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24
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Krishna R, Karkute SG, Ansari WA, Jaiswal DK, Verma JP, Singh M. Transgenic tomatoes for abiotic stress tolerance: status and way ahead. 3 Biotech 2019; 9:143. [PMID: 30944790 DOI: 10.1007/s13205-019-1665-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 03/01/2019] [Indexed: 11/25/2022] Open
Abstract
Tomato (Solanum lycopersicum) is one of the most important vegetable crops; its production, productivity and quality are adversely affected by abiotic stresses. Abiotic stresses such as drought, extreme temperature and high salinity affect almost every stage of tomato life cycle. Depending upon the plant stage and duration of the stress, abiotic stress causes about 70% yield loss. Several wild tomato species have the stress tolerance genes; however, it is very difficult to transfer them into cultivars due to high genetic distance and crossing barriers. Transgenic technology is an alternative potential tool for the improvement of tomato crop to cope with abiotic stress, as it allows gene transfer across species. In recent decades, many transgenic tomatoes have been developed, and many more are under progress against abiotic stress using transgenes such as DREBs, Osmotin, ZAT12 and BADH2. The altered expression of these transgenes under abiotic stresses are involved in every step of stress responses, such as signaling, control of transcription, proteins and membrane protection, compatible solute (betaines, sugars, polyols, and amino acids) synthesis, and free-radical and toxic-compound scavenging. The stress-tolerant transgenic tomato development is based on introgression of a gene with known function in stress response and putative tolerance. Transgenic tomato plants have been developed against drought, heat and salt stress with the help of various transgenes, expression of which manages the stress at the cellular level by modulating the expression of downstream genes to ultimately improve growth and yield of tomato plants and help in sustainable agricultural production. The transgenic technology could be a faster way towards tomato improvement against abiotic stress. This review provides comprehensive information about transgenic tomato development against abiotic stress such as drought, heat and salinity for researcher attention and a better understanding of transgenic technology used in tomato improvement and sustainable agricultural production.
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Affiliation(s)
- Ram Krishna
- 1Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, 221005 India
- 2Division of Vegetable Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, 221305 India
| | - Suhas G Karkute
- 2Division of Vegetable Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, 221305 India
| | - Waquar A Ansari
- 2Division of Vegetable Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, 221305 India
| | - Durgesh Kumar Jaiswal
- 1Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, 221005 India
| | - Jay Prakash Verma
- 1Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, 221005 India
- 3Hawkesbury Institute for the Environment, Western Sydney University, Hawkesbury Campus, Locked Bag 1797, Penrith, Sydney, NSW 2750 Australia
| | - Major Singh
- 4ICAR-Directorate of Onion and Garlic Research, Rajgurunagar, Pune, 410505 India
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25
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Yang X, He K, Chi X, Chai G, Wang Y, Jia C, Zhang H, Zhou G, Hu R. Miscanthus NAC transcription factor MlNAC12 positively mediates abiotic stress tolerance in transgenic Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 277:229-241. [PMID: 30466589 DOI: 10.1016/j.plantsci.2018.09.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 08/28/2018] [Accepted: 09/20/2018] [Indexed: 05/07/2023]
Abstract
NAC (NAM, ATAF1/2 and CUC2) transcription factors play critical roles in plant abiotic stress responses. However, knowledge regarding the functional roles of NACs in abiotic stress tolerance and its underlying mechanisms is relatively limited in Miscanthus. In this study, we functionally characterized a novel Miscanthus NAC gene MlNAC12 by ectopic expression in Arabidopsis. MlNAC12 was localized in the nucleus. It could specifically binds to the NAC recognition sequence (NACRS) and has a transactivation activity in the C-terminus. Overexpression of MlNAC12 in Arabidopsis conferred hypersensitivity to exogenous Abscisic acid (ABA) at seed germination and root elongation stages. In addition, MlNAC12 overexpression enhanced germination and root growth under salt (NaCl) stress. Furthermore, MlNAC12 overexpression lines exhibited significantly enhanced drought stress tolerance, which was evidenced by a higher survival rate and a lower water loss rate compared to the wild type (WT). Accordingly, the stomata aperture was remarkably reduced in MlNAC12 overexpression lines in comparison to the WT under drought stress. Furthermore, the accumulation of the reactive oxygen species (ROS) and malondialdehyde (MDA) under abiotic stresses was significantly decreased, accompanied by dramatically enhanced activities of several antioxidant enzymes including superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) in the transgenic plants. Correspondingly, the expression of six stress-responsive genes was significantly up-regulated in MlNAC12 overexpression lines. Together, our results indicate that MlNAC12 is a positive regulator of drought and salt stress tolerance through activating ROS scavenging enzymes.
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Affiliation(s)
- Xuanwen Yang
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Kang He
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaoyuan Chi
- Shandong Peanut Research Institute, Qingdao, 266100, China
| | - Guohua Chai
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Yiping Wang
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chunlin Jia
- Shandong Institute of Agricultural Sustainable Development, Jinan, 250100, China
| | - Hongpeng Zhang
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Gongke Zhou
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
| | - Ruibo Hu
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China.
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