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Shahzad A, Fan Y, Qian M, Khan SU, Mahmood U, Wei L, Qu C, Lu K. Genome-wide characterization of Related to ABI3/VP1 transcription factors among U's triangle Brassica species reveals a negative role for BnaA06.RAV3L in seed size. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 213:108854. [PMID: 38901228 DOI: 10.1016/j.plaphy.2024.108854] [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: 03/18/2024] [Revised: 06/01/2024] [Accepted: 06/16/2024] [Indexed: 06/22/2024]
Abstract
The transcription factors Related to ABI3/VP1 (RAV) are crucial for various plant processes and stress responses. Although the U's triangle Brassica species genomes have been released, the knowledge regarding the RAV family is still limited. In this study, we identified 123 putative RAV genes across the six U's triangle Brassica species (Brassica rapa, 14; Brassica oleracea, 14; Brassica nigra, 13; Brassica carinata, 27; Brassica juncea, 28; Brassica napus, 27). Phylogenetic analysis categorized them into three groups. The RAV genes exhibited diversity in both functional and structural aspects, particularly in gene structure and cis-acting elements within their promoters. The expression analysis revealed that BnaRAV genes in Group 1/2 exhibited diverse expression patterns across various tissues, while those in Group 3 did not show expression except for BnaRAV3L-2 and BnaRAV3L-6, which were exclusively expressed in seeds. Furthermore, the seed-specific expression of BnaA06. RAV3L (BnaRAV3L-2) was confirmed through promoter-GUS staining. Subcellular localization studies demonstrated that BnaA06.RAV3L is localized to the nucleus. The overexpression of BnaA06. RAV3L in Arabidopsis led to a remarkable inhibition of seed-specific traits such as seed width, seed length, seed area, and seed weight. This study provides insights into the functional evolution of the RAV gene family in U triangle Brassica species. It establishes a foundation for uncovering the molecular mechanisms underlying the negative role of RAV3L in seed development.
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Affiliation(s)
- Ali Shahzad
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
| | - Yonghai Fan
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
| | - Mingchao Qian
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
| | - Shahid Ullah Khan
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
| | - Umer Mahmood
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
| | - Lijuan Wei
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
| | - Cunmin Qu
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
| | - Kun Lu
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China; Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China; Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China.
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Zhang L, Yang H, Feng T, Xu Y, Tang X, Yang X, Wang-Pruski G, Zhang Z. Root suberization in the response mechanism of melon to autotoxicity. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 212:108787. [PMID: 38850731 DOI: 10.1016/j.plaphy.2024.108787] [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: 02/02/2024] [Revised: 05/11/2024] [Accepted: 05/29/2024] [Indexed: 06/10/2024]
Abstract
Continuous cropping obstacles poses significant challenges for melon cultivation, with autotoxicity being a primary inducer. Suberization of cells or tissues is a vital mechanism for plant stress response. Our study aimed to elucidate the potential mechanism of root suberization in melon's response to autotoxicity. Cinnamic acid was used to simulate autotoxicity. Results showed that autotoxicity worsened the root morphology and activity of seedlings. Significant reductions were observed in root length, diameter, surface area, volume and fork number compared to the control in the later stage of treatment, with a decrease ranging from 20% to 50%. The decrease in root activity ranged from 16.74% to 29.31%. Root suberization intensified, and peripheral suberin deposition became more prominent. Autotoxicity inhibited phenylalanineammonia-lyase activity, the decrease was 50% at 16 h. The effect of autotoxicity on cinnamylalcohol dehydrogenase and cinnamate 4-hydroxylase activity showed an initial increase followed by inhibition, resulting in reductions of 34.23% and 44.84% at 24 h, respectively. The peroxidase activity only significantly increased at 24 h, with an increase of 372%. Sixty-three differentially expressed genes (DEGs) associated with root suberization were identified, with KCS, HCT, and CYP family showing the highest gene abundance. GO annotated DEGs into nine categories, mainly related to binding and catalytic activity. DEGs were enriched in 27 KEGG pathways, particularly those involved in keratin, corkene, and wax biosynthesis. Seven proteins, including C4H, were centrally positioned within the protein interaction network. These findings provide insights for improving stress resistance in melons and breeding stress-tolerant varieties.
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Affiliation(s)
- Lizhen Zhang
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Hao Yang
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Fujian Yongan Vegetable Science and Technology Backyard, Sanming, 366000, China
| | - Taojie Feng
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Fujian Yongan Vegetable Science and Technology Backyard, Sanming, 366000, China
| | - Yuxuan Xu
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Fujian Yongan Vegetable Science and Technology Backyard, Sanming, 366000, China
| | - Xianhuan Tang
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Fujian Yongan Vegetable Science and Technology Backyard, Sanming, 366000, China
| | - Xinyue Yang
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Fujian Yongan Vegetable Science and Technology Backyard, Sanming, 366000, China
| | - Gefu Wang-Pruski
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, B2N5E3, Canada
| | - Zhizhong Zhang
- Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, 350002, China; Key Laboratory of Ministry of Education for Genetics, Breeding and Comprehensive Utilization of Crops, Fuzhou, 350002, China.
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Liu Q, Liu H, Zhang M, Lv G, Zhao Z, Chen X, Wei X, Zhang C, Li M. Multifaceted insights into the environmental adaptability of Arnebia guttata under drought stress. FRONTIERS IN PLANT SCIENCE 2024; 15:1395046. [PMID: 38938629 PMCID: PMC11210590 DOI: 10.3389/fpls.2024.1395046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Accepted: 05/20/2024] [Indexed: 06/29/2024]
Abstract
Introduction Global warming has led to increased environmental stresses on plants, notably drought. This affects plant distribution and species adaptability, with some medicinal plants showing enhanced drought tolerance and increased medicinal components. In this pioneering study, we delve into the intricate tapestry of Arnebia guttata, a medicinal plant renowned for its resilience in arid environments. By fusing a rich historical narrative with cutting-edge analytical methodologies, this research endeavors to demystify the plant's intricate response to drought stress, illuminating its profound implications for medicinal valorization. Methods The methodology includes a comprehensive textual research and resource investigation of A. guttata, regionalization studies, field sample distribution analysis, transcriptome and metabolome profiling, rhizosphere soil microbiome analysis, and drought stress experiments. Advanced computational tools like ArcGIS, MaxEnt, and various bioinformatics software were utilized for data analysis and modeling. Results The study identified significant genetic variations among A. guttata samples from different regions, correlating with environmental factors, particularly precipitation during the warmest quarter (BIO18). Metabolomic analysis revealed marked differences in metabolite profiles, including shikonin content, which is crucial for the plant's medicinal properties. Soil microbial community analysis showed variations that could impact plant metabolism and stress response. Drought stress experiments demonstrated A. guttata's resilience and its ability to modulate metabolic pathways to enhance drought tolerance. Discussion The findings underscore the complex interplay between genetic makeup, environmental factors, and microbial communities in shaping A. guttata's adaptability and medicinal value. The study provides insights into how drought stress influences the synthesis of active compounds and suggests that moderate stress could enhance the plant's medicinal properties. Predictive modeling indicates future suitable growth areas for A. guttata, aiding in resource management and conservation efforts. The research contributes to the sustainable development of medicinal resources and offers strategies for improving the cultivation of A. guttata.
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Affiliation(s)
- Qian Liu
- Central Laboratory, Inner Mongolia Autonomous Region Hospital of Traditional Chinese Medicine, Hohhot, China
- Inner Mongolia Key Laboratory of Characteristic Geoherbs Resources Protection and Utilization, Baotou Medical College, Baotou, China
| | - Haolin Liu
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Min Zhang
- Central Laboratory, Inner Mongolia Autonomous Region Hospital of Traditional Chinese Medicine, Hohhot, China
- Inner Mongolia Key Laboratory of Characteristic Geoherbs Resources Protection and Utilization, Baotou Medical College, Baotou, China
| | - Guoshuai Lv
- Central Laboratory, Inner Mongolia Autonomous Region Hospital of Traditional Chinese Medicine, Hohhot, China
| | - Zeyuan Zhao
- Central Laboratory, Inner Mongolia Autonomous Region Hospital of Traditional Chinese Medicine, Hohhot, China
- Inner Mongolia Key Laboratory of Characteristic Geoherbs Resources Protection and Utilization, Baotou Medical College, Baotou, China
| | - Xingyu Chen
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
| | - Xinxin Wei
- Central Laboratory, Inner Mongolia Autonomous Region Hospital of Traditional Chinese Medicine, Hohhot, China
| | - Chunhong Zhang
- Inner Mongolia Key Laboratory of Characteristic Geoherbs Resources Protection and Utilization, Baotou Medical College, Baotou, China
| | - Minhui Li
- Central Laboratory, Inner Mongolia Autonomous Region Hospital of Traditional Chinese Medicine, Hohhot, China
- Inner Mongolia Key Laboratory of Characteristic Geoherbs Resources Protection and Utilization, Baotou Medical College, Baotou, China
- College of Pharmacy, Inner Mongolia Medical University, Hohhot, China
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Yan Y, Wang P, He J, Shi H. KIN10-mediated HB16 protein phosphorylation and self-association improve cassava disease resistance by transcriptional activation of lignin biosynthesis genes. PLANT BIOTECHNOLOGY JOURNAL 2024. [PMID: 38768314 DOI: 10.1111/pbi.14386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 03/07/2024] [Accepted: 05/07/2024] [Indexed: 05/22/2024]
Abstract
Cassava bacterial blight significantly affects cassava yield worldwide, while major cassava cultivars are susceptible to this disease. Therefore, it is crucial to identify cassava disease resistance gene networks and defence molecules for the genetic improvement of cassava cultivars. In this study, we found that MeHB16 transcription factor as a differentially expressed gene in cassava cultivars with contrasting disease resistance, positively modulated disease resistance by modulating defence molecule lignin accumulation. Further investigation showed that MeHB16 physically interacted with itself via the leucine-Zippe domain (L-Zip), which was necessary for the transcriptional activation of downstream lignin biosynthesis genes. In addition, protein kinase MeKIN10 directly interacted with MeHB16 to promote its phosphorylation at Ser6, which in turn enhanced MeHB16 self-association and downstream lignin biosynthesis. In summary, this study revealed the molecular network of MeKIN10-mediated MeHB16 protein phosphorylation improved cassava bacterial blight resistance by fine-tuning lignin biosynthesis and provides candidate genes and the defence molecule for improving cassava disease resistance.
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Affiliation(s)
- Yu Yan
- National Key Laboratory for Tropical Crop Breeding, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Hainan province, China
| | - Peng Wang
- National Key Laboratory for Tropical Crop Breeding, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Hainan province, China
| | - Jiaoyan He
- National Key Laboratory for Tropical Crop Breeding, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Hainan province, China
| | - Haitao Shi
- National Key Laboratory for Tropical Crop Breeding, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Hainan province, China
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Lin YH, Zhou YN, Liang XG, Jin YK, Xiao ZD, Zhang YJ, Huang C, Hong B, Chen ZY, Zhou SL, Shen S. Exogenous methylglyoxal alleviates drought-induced 'plant diabetes' and leaf senescence in maize. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:1982-1996. [PMID: 38124377 DOI: 10.1093/jxb/erad503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 12/16/2023] [Indexed: 12/23/2023]
Abstract
Drought-induced leaf senescence is associated with high sugar levels, which bears some resemblance to the syndrome of diabetes in humans; however, the underlying mechanisms of such 'plant diabetes' on carbon imbalance and the corresponding detoxification strategy are not well understood. Here, we investigated the regulatory mechanism of exogenous methylglyoxal (MG) on 'plant diabetes' in maize plants under drought stress applied via foliar spraying during the grain-filling stage. Exogenous MG delayed leaf senescence and promoted photoassimilation, thereby reducing the yield loss induced by drought by 14%. Transcriptome and metabolite analyses revealed that drought increased sugar accumulation in leaves through inhibition of sugar transporters that facilitate phloem loading. This led to disequilibrium of glycolysis and overaccumulation of endogenous MG. Application of exogenous MG up-regulated glycolytic flux and the glyoxalase system that catabolyses endogenous MG and glycation end-products, ultimately alleviating 'plant diabetes'. In addition, the expression of genes facilitating anabolism and catabolism of trehalose-6-phosphate was promoted and suppressed by drought, respectively, and exogenous MG reversed this effect, implying that trehalose-6-phosphate signaling in the mediation of 'plant diabetes'. Furthermore, exogenous MG activated the phenylpropanoid biosynthetic pathway, promoting the production of lignin and phenolic compounds, which are associated with drought tolerance. Overall, our findings indicate that exogenous MG activates defense-related pathways to alleviate the toxicity derived from 'plant diabetes', thereby helping to maintain leaf function and yield production under drought.
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Affiliation(s)
- Yi-Hsuan Lin
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Ya-Ning Zhou
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Xiao-Gui Liang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Yu-Ka Jin
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Zu-Dong Xiao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Ying-Jun Zhang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Cheng Huang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Bo Hong
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Zhen-Yuan Chen
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Shun-Li Zhou
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
- Innovation Center of Agricultural Technology for Lowland Plain of Hebei, Wuqiao 061802, China
| | - Si Shen
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
- Innovation Center of Agricultural Technology for Lowland Plain of Hebei, Wuqiao 061802, China
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Wu JW, Zhao ZY, Hu RC, Huang YF. Genome-wide identification, stress- and hormone-responsive expression characteristics, and regulatory pattern analysis of Scutellaria baicalensis SbSPLs. PLANT MOLECULAR BIOLOGY 2024; 114:20. [PMID: 38363403 PMCID: PMC10873456 DOI: 10.1007/s11103-023-01410-z] [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: 09/15/2023] [Accepted: 12/11/2023] [Indexed: 02/17/2024]
Abstract
SQUAMOSA PROMOTER BINDING PROTEIN-LIKEs (SPLs) encode plant-specific transcription factors that regulate plant growth and development, stress response, and metabolite accumulation. However, there is limited information on Scutellaria baicalensis SPLs. In this study, 14 SbSPLs were identified and divided into 8 groups based on phylogenetic relationships. SbSPLs in the same group had similar structures. Abscisic acid-responsive (ABRE) and MYB binding site (MBS) cis-acting elements were found in the promoters of 8 and 6 SbSPLs. Segmental duplications and transposable duplications were the main causes of SbSPL expansion. Expression analysis based on transcriptional profiling showed that SbSPL1, SbSPL10, and SbSPL13 were highly expressed in roots, stems, and flowers, respectively. Expression analysis based on quantitative real-time polymerase chain reaction (RT‒qPCR) showed that most SbSPLs responded to low temperature, drought, abscisic acid (ABA) and salicylic acid (SA), among which the expression levels of SbSPL7/9/10/12 were significantly upregulated in response to abiotic stress. These results indicate that SbSPLs are involved in the growth, development and stress response of S. baicalensis. In addition, 8 Sba-miR156/157 s were identified, and SbSPL1-5 was a potential target of Sba-miR156/157 s. The results of target gene prediction and coexpression analysis together indicated that SbSPLs may be involved in the regulation of L-phenylalanine (L-Phe), lignin and jasmonic acid (JA) biosynthesis. In summary, the identification and characterization of the SbSPL gene family lays the foundation for functional research and provides a reference for improved breeding of S. baicalensis stress resistance and quality traits.
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Affiliation(s)
- Jia-Wen Wu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150000, China
| | - Zi-Yi Zhao
- Guangxi Key Laboratory of Traditional Chinese Medicine Quality Standards, Guangxi Institute of Chinese Medicine and Pharmaceutical Science, Nanning, 530022, China
| | - Ren-Chuan Hu
- Guangxi Key Laboratory of Traditional Chinese Medicine Quality Standards, Guangxi Institute of Chinese Medicine and Pharmaceutical Science, Nanning, 530022, China
| | - Yun-Feng Huang
- Guangxi Key Laboratory of Traditional Chinese Medicine Quality Standards, Guangxi Institute of Chinese Medicine and Pharmaceutical Science, Nanning, 530022, China.
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Yang J, Yi J, Ma S, Wang Y, Song J, Li S, Feng Y, Sun H, Gao C, Yang R, Li Z, Cao Y, Yang P. Integrated physiological, metabolomic, and transcriptomic analyses elucidate the regulation mechanisms of lignin synthesis under osmotic stress in alfalfa leaf (Medicago sativa L.). BMC Genomics 2024; 25:174. [PMID: 38350871 PMCID: PMC10865589 DOI: 10.1186/s12864-024-10039-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/22/2024] [Indexed: 02/15/2024] Open
Abstract
Alfalfa, an essential forage crop known for its high yield, nutritional value, and strong adaptability, has been widely cultivated worldwide. The yield and quality of alfalfa are frequently jeopardized due to environmental degradation. Lignin, a constituent of the cell wall, enhances plant resistance to abiotic stress, which often causes osmotic stress in plant cells. However, how lignin responds to osmotic stress in leaves remains unclear. This study explored the effects of osmotic stress on lignin accumulation and the contents of intermediate metabolites involved in lignin synthesis in alfalfa leaves. Osmotic stress caused an increase in lignin accumulation and the alteration of core enzyme activities and gene expression in the phenylpropanoid pathway. We identified five hub genes (CSE, CCR, CADa, CADb, and POD) and thirty edge genes (including WRKYs, MYBs, and UBPs) by integrating transcriptome and metabolome analyses. In addition, ABA and ethylene signaling induced by osmotic stress regulated lignin biosynthesis in a contradictory way. These findings contribute to a new theoretical foundation for the breeding of high-quality and resistant alfalfa varieties.
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Affiliation(s)
- Jing Yang
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China
| | - Jiangnan Yi
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China
| | - Shihai Ma
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China
| | - Yafang Wang
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China
| | - Jiaxing Song
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China
| | - Shuo Li
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China
| | - Yueyan Feng
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China
| | - Haoyang Sun
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China
| | - Cai Gao
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China
| | - Rongchen Yang
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China
| | - Zhongxing Li
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China
| | - Yuman Cao
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China.
| | - Peizhi Yang
- College of Grassland Agriculture, Northwest A&F University, 712100, Yangling, China.
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Jiao P, Jiang Z, Miao M, Wei X, Wang C, Liu S, Guan S, Ma Y. Zmhdz9, an HD-Zip transcription factor, promotes drought stress resistance in maize by modulating ABA and lignin accumulation. Int J Biol Macromol 2024; 258:128849. [PMID: 38113999 DOI: 10.1016/j.ijbiomac.2023.128849] [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: 09/26/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/21/2023]
Abstract
Maize is the largest crop in the world in terms of both planting area and total yield, and it plays a crucial role in ensuring global food and feed security. However, in recent years, with climate deterioration, environmental changes, and the scarcity of freshwater resources, drought has become a serious limiting factor for maize yield and quality. Drought stress-induced signals undergo a series of transmission processes to regulate the expression of specific genes, thereby affecting the drought tolerance of plants at the tissue, cellular, physiological and biochemical levels. Therefore, in this study we investigated the HD-Zip transcription factor gene Zmhdz9, and yeast activation experiments demonstrated that Zmhdz9 exhibited transcriptional activation activity. Under drought stress, high abscisic acid (ABA) and lignin levels significantly improved drought resistance in maize. Yeast two-hybrid, bimolecular fluorescence complementation (BIFC) and pull-down experiments showed that Zmhdz9 interacted with ZmWRKY120 and ZmTCP9, respectively. Overexpression of Zmhdz9 and gene editing of ZmWRKY120 or ZmTCP9 improved maize drought resistance, indicating their importance in the drought stress response. Furthermore, Zmhdz9 promoted the direct transcription of ZmWRKY120 in the W-box, activating elements of the ZmNCED1 promoter, which encodes a key enzyme in ABA biosynthesis. Additionally, Zmhdz9 promoted direct transcription of ZmTCP9 in the GGTCA motif, activating elements of the ZmKNOX8 promoter, which encodes a key enzyme in lignin synthesis. This study showed that the regulation of ABA and lignin by Zmhdz9 is essential for drought stress resistance in maize.
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Affiliation(s)
- Peng Jiao
- College of Agronomy, Jilin Agricultural University, Changchun 130118, China; Joint International Research Laboratory of Modern Agricultural Technology, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Zhenzhong Jiang
- College of Life Sciences, Jilin Agricultural University, Changchun 130118, China; Joint International Research Laboratory of Modern Agricultural Technology, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Ming Miao
- College of Agronomy, Jilin Agricultural University, Changchun 130118, China; Joint International Research Laboratory of Modern Agricultural Technology, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Xiaotong Wei
- College of Agronomy, Jilin Agricultural University, Changchun 130118, China; Joint International Research Laboratory of Modern Agricultural Technology, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Chunlai Wang
- College of Agronomy, Jilin Agricultural University, Changchun 130118, China; Joint International Research Laboratory of Modern Agricultural Technology, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Siyan Liu
- College of Agronomy, Jilin Agricultural University, Changchun 130118, China; Joint International Research Laboratory of Modern Agricultural Technology, Ministry of Education, Jilin Agricultural University, Changchun 130118, China
| | - Shuyan Guan
- College of Agronomy, Jilin Agricultural University, Changchun 130118, China; Joint International Research Laboratory of Modern Agricultural Technology, Ministry of Education, Jilin Agricultural University, Changchun 130118, China.
| | - Yiyong Ma
- College of Agronomy, Jilin Agricultural University, Changchun 130118, China; Joint International Research Laboratory of Modern Agricultural Technology, Ministry of Education, Jilin Agricultural University, Changchun 130118, China.
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Im JH, Son S, Kim WC, Kim K, Mitsuda N, Ko JH, Han KH. Jasmonate activates secondary cell wall biosynthesis through MYC2-MYB46 module. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 117:1099-1114. [PMID: 37983636 DOI: 10.1111/tpj.16541] [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: 07/13/2023] [Revised: 10/17/2023] [Accepted: 10/26/2023] [Indexed: 11/22/2023]
Abstract
Formation of secondary cell wall (SCW) is tightly regulated spatiotemporally by various developmental and environmental signals. Successful fine-tuning of the trade-off between SCW biosynthesis and stress responses requires a better understanding of how plant growth is regulated under environmental stress conditions. However, the current understanding of the interplay between environmental signaling and SCW formation is limited. The lipid-derived plant hormone jasmonate (JA) and its derivatives are important signaling components involved in various physiological processes including plant growth, development, and abiotic/biotic stress responses. Recent studies suggest that JA is involved in SCW formation but the signaling pathway has not been studied for how JA regulates SCW formation. We tested this hypothesis using the transcription factor MYB46, a master switch for SCW biosynthesis, and JA treatments. Both the transcript and protein levels of MYB46, a master switch for SCW formation, were significantly increased by JA treatment, resulting in the upregulation of SCW biosynthesis. We then show that this JA-induced upregulation of MYB46 is mediated by MYC2, a central regulator of JA signaling, which binds to the promoter of MYB46. We conclude that this MYC2-MYB46 module is a key component of the plant response to JA in SCW formation.
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Affiliation(s)
- Jong Hee Im
- Department of Horticulture, Michigan State University, East Lansing, Michigan, 48824, USA
- DOE Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, Michigan, 48824, USA
- Department of Science Education, Jeju National University, Jeju, Republic of Korea
| | - Seungmin Son
- National Institute of Agricultural Sciences, Rural Development Administration, Jeonju, 54874, Republic of Korea
| | - Won-Chan Kim
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Kihwan Kim
- School of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Nobutaka Mitsuda
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, 305-8566, Japan
| | - Jae-Heung Ko
- Department of Plant & Environmental New Resources, Kyung Hee University, Yongin, 17104, Republic of Korea
| | - Kyung-Hwan Han
- Department of Horticulture, Michigan State University, East Lansing, Michigan, 48824, USA
- DOE Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, Michigan, 48824, USA
- Department of Forestry, Michigan State University, East Lansing, Michigan, 48824, USA
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10
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Mao K, Yang J, Sun Y, Guo X, Qiu L, Mei Q, Li N, Ma F. MdbHLH160 is stabilized via reduced MdBT2-mediated degradation to promote MdSOD1 and MdDREB2A-like expression for apple drought tolerance. PLANT PHYSIOLOGY 2024; 194:1181-1203. [PMID: 37930306 DOI: 10.1093/plphys/kiad579] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 11/07/2023]
Abstract
Drought stress is a key environmental factor limiting the productivity, quality, and geographic distribution of crops worldwide. Abscisic acid (ABA) plays an important role in plant drought stress responses, but the molecular mechanisms remain unclear. Here, we report an ABA-responsive bHLH transcription factor, MdbHLH160, which promotes drought tolerance in Arabidopsis (Arabidopsis thaliana) and apple (Malus domestica). Under drought conditions, MdbHLH160 is directly bound to the MdSOD1 (superoxide dismutase 1) promoter and activated its transcription, thereby triggering reactive oxygen species (ROS) scavenging and enhancing apple drought tolerance. MdbHLH160 also promoted MdSOD1 enzyme activity and accumulation in the nucleus through direct protein interactions, thus inhibiting excessive nuclear ROS levels. Moreover, MdbHLH160 directly upregulated the expression of MdDREB2A-like, a DREB (dehydration-responsive element binding factor) family gene that promotes apple drought tolerance. Protein degradation and ubiquitination assays showed that drought and ABA treatment stabilized MdbHLH160. The BTB protein MdBT2 was identified as an MdbHLH160-interacting protein that promoted MdbHLH160 ubiquitination and degradation, and ABA treatment substantially inhibited this process. Overall, our findings provide insights into the molecular mechanisms of ABA-modulated drought tolerance at both the transcriptional and post-translational levels via the ABA-MdBT2-MdbHLH160-MdSOD1/MdDREB2A-like cascade.
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Affiliation(s)
- Ke Mao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Jie Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Yunxia Sun
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Xin Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Lina Qiu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Quanlin Mei
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Na Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, 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 712100, Shaanxi, China
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11
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Pan R, Wang Y, An F, Yao Y, Xue J, Zhu W, Luo X, Lai H, Chen S. Genome-wide identification and characterization of 14-3-3 gene family related to negative regulation of starch accumulation in storage root of Manihot esculenta. FRONTIERS IN PLANT SCIENCE 2023; 14:1184903. [PMID: 37711300 PMCID: PMC10497974 DOI: 10.3389/fpls.2023.1184903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 06/21/2023] [Indexed: 09/16/2023]
Abstract
The 14-3-3 protein family is a highly conservative member of the acid protein family and plays an important role in regulating a series of important biological activities and various signal transduction pathways. The role of 14-3-3 proteins in regulating starch accumulation still remains largely unknown. To investigate the properties of 14-3-3 proteins, the structures and functions involved in starch accumulation in storage roots were analyzed, and consequently, 16 Me14-3-3 genes were identified. Phylogenetic analysis revealed that Me14-3-3 family proteins are split into two groups (ε and non-ε). All Me14-3-3 proteins contain nine antiparallel α-helices. Me14-3-3s-GFP fusion protein was targeted exclusively to the nuclei and cytoplasm. In the early stage of starch accumulation in the storage root, Me14-3-3 genes were highly expressed in high-starch cultivars, while in the late stage of starch accumulation, Me14-3-3 genes were highly expressed in low-starch cultivars. Me14-3-3 I, II, V, and XVI had relatively high expression levels in the storage roots. The transgenic evidence from Me14-3-3II overexpression in Arabidopsis thaliana and the virus-induced gene silencing (VIGS) in cassava leaves and storage roots suggest that Me14-3-3II is involved in the negative regulation of starch accumulation. This study provides a new insight to understand the molecular mechanisms of starch accumulation linked with Me14-3-3 genes during cassava storage root development.
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Affiliation(s)
- Ranran Pan
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
- College of Tropical Crops, Hainan University, Haikou, China
| | - Yajie Wang
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture of Biology and Genetic Resources of Tropical Crops, Haikou, China
| | - Feifei An
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Yuan Yao
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture of Biology and Genetic Resources of Tropical Crops, Haikou, China
| | - Jingjing Xue
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Wenli Zhu
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Xiuqin Luo
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Hanggui Lai
- College of Tropical Crops, Hainan University, Haikou, China
| | - Songbi Chen
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
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12
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Lei X, Fang J, Lv J, Li Z, Liu Z, Wang Y, Wang C, Gao C. Overexpression of ThSCL32 confers salt stress tolerance by enhancing ThPHD3 gene expression in Tamarix hispida. TREE PHYSIOLOGY 2023; 43:1444-1453. [PMID: 37104646 DOI: 10.1093/treephys/tpad057] [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: 02/01/2023] [Revised: 03/24/2023] [Accepted: 03/31/2023] [Indexed: 06/19/2023]
Abstract
GRAS transcription factors belong to the plant-specific protein family. They are not only involved in plant growth and development but also in plant responses to a variety of abiotic stresses. However, to date, the SCL32(SCARECROW-like 32) gene conferring the desired resistance to salt stresses has not been reported in plants. Here, ThSCL32, a homologous gene of ArabidopsisthalianaAtSCL32, was identified. ThSCL32 was highly induced by salt stress in Tamarix hispida. ThSCL32 overexpression in T. hispida gave rise to improved salt tolerance. ThSCL32-silenced T. hispida plants were more sensitive to salt stress. RNA-seq analysis of transient transgenic T. hispida overexpressing ThSCL32 revealed significantly enhanced ThPHD3 (prolyl-4-hydroxylase domain 3 protein) gene expression. ChIP-PCR further verified that ThSCL32 probably binds to the novel cis-element SBS (ACGTTG) in the promoter of ThPHD3 to activate its expression. In brief, our results suggest that the ThSCL32 transcription factor is involved in salt tolerance in T. hispida by enhancing ThPHD3 expression.
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Affiliation(s)
- Xiaojin Lei
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Jiaru Fang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - JiaXin Lv
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Zhengyang Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Zhongyuan Liu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Yucheng Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Chao Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
| | - Caiqiu Gao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, 51 Hexing Road, Harbin 150040, China
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13
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Narayan S, Sharma RK, Kumar V, Sanyal I, Shirke PA. Alterations in plant anatomy and higher lignin synthesis provides drought tolerance in cluster bean [Cyamopsis tetragonoloba (L.) Taub.]. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107905. [PMID: 37527608 DOI: 10.1016/j.plaphy.2023.107905] [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: 04/07/2023] [Revised: 06/14/2023] [Accepted: 07/22/2023] [Indexed: 08/03/2023]
Abstract
Four contrasting varieties of guar, RGC-1002 and RGC-1038, drought tolerant, while, Sarada and RGC-936, drought sensitive, were monitored in watered and drought. The water status, phenolics, plant anatomy and transcript level of genes related to anatomical traits were assessed. The study aimed to decipher the anatomical adaptations of guar plants in response to water stress. The physiological determinants, relative water content (RWC), water potential (ψ), and leaf membrane damage, declined under drought in all four varieties although, the decrement was lesser in the tolerant varieties. Furthermore, the tolerant cultivars subjected to water stress recorded higher accumulation of total phenolic content, anthocyanin and lignin, which efficiently scavenge the reactive oxygen species. The results suggest that the cultivars RGC-1002 and RGC-1038 are better able to resist drought-induced oxidative stress than Sarada and RGC-936. Moreover, leaf, petiole, stem and root anatomical traits viz. size of epidermal cell, parenchyma, width of cortex layer, and diameter of xylem vessels were narrowed in all the varieties although, the decrement was lesser in the tolerant varieties under drought. The expression analysis of genes revealed that drought-tolerant varieties showed enhanced mechanical support for water conduction by up-regulation of genes, Phenylalanine ammonia-lyase1 (PAL1), cinnamate-4-hydroxylase (C4H), 4-coumarate-CoA ligase (4CL), cinnamoyl-CoA reductase (CCR), caffeoyl-CoA O-methyltransferase (CCOMT), and cinnamyl-alcohol dehydrogenase (CAD6) in water stress conditions. The alterations in physio-anatomical, biochemical and gene expression traits in tolerant guar varieties enabled them to maintain steady nutrient transport while reducing the risk of embolisms and increasing water-flow resistance for better survival in water stressed conditions.
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Affiliation(s)
- Shiv Narayan
- Plant Physiology Laboratory, CSIR(#) - National Botanical Research Institute, Lucknow, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Rakesh Kumar Sharma
- Plant Physiology Laboratory, CSIR(#) - National Botanical Research Institute, Lucknow, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Varun Kumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India; CSIR-National Botanical Research Institute, Lucknow, 226001, India
| | - Indraneel Sanyal
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India; CSIR-National Botanical Research Institute, Lucknow, 226001, India
| | - Pramod Arvind Shirke
- Plant Physiology Laboratory, CSIR(#) - National Botanical Research Institute, Lucknow, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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14
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Zhou M, Wang G, Bai R, Zhao H, Ge Z, Shi H. The self-association of cytoplasmic malate dehydrogenase 1 promotes malate biosynthesis and confers disease resistance in cassava. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 201:107814. [PMID: 37321041 DOI: 10.1016/j.plaphy.2023.107814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 06/17/2023]
Abstract
Malate dehydrogenase (MDH) as an essential metabolic enzyme is widely involved in plant developmental processes. However, the direct relationship between its structural basis and in vivo roles especially in plant immunity remains elusive. In this study, we found that cytoplasmic cassava (Manihot esculenta, Me) MDH1 was essential for plant disease resistance against cassava bacterial blight (CBB). Further investigation revealed that MeMDH1 positively modulated cassava disease resistance, accompanying the regulation of salicylic acid (SA) accumulation and pathogensis-related protein 1 (MePR1) expression. Notably, the metabolic product of MeMDH1 (malate) also improved disease resistance in cassava, and its application rescued the disease susceptibility and decreased immune responses of MeMDH1-silenced plants, indicating that malate was responsible for MeMDH1-mediated disease resistance. Interestingly, MeMDH1 relied on Cys330 residues to form homodimer, which was directly related with MeMDH1 enzyme activity and the corresponding malate biosynthesis. The crucial role of Cys330 residue in MeMDH1 was further confirmed by in vivo functional comparison between overexpression of MeMDH1 and MeMDH1C330A in cassava disease resistance. Taken together, this study highlights that MeMDH1 confers improved plant disease resistance through protein self-association to promote malate biosynthesis, extending the knowledge of the relationship between its structure and cassava disease resistance.
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Affiliation(s)
- Mengmeng Zhou
- Sanya Nanfan Research Institute of Hainan University, Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Hainan province, China; National Key Laboratory for Tropical Crop Breeding, Hainan University, Hainan province, China; Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan province, China
| | - Guanqi Wang
- Sanya Nanfan Research Institute of Hainan University, Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Hainan province, China; National Key Laboratory for Tropical Crop Breeding, Hainan University, Hainan province, China; Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan province, China
| | - Ruoyu Bai
- Sanya Nanfan Research Institute of Hainan University, Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Hainan province, China; National Key Laboratory for Tropical Crop Breeding, Hainan University, Hainan province, China; Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan province, China
| | - Huiping Zhao
- Sanya Nanfan Research Institute of Hainan University, Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Hainan province, China; National Key Laboratory for Tropical Crop Breeding, Hainan University, Hainan province, China; Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan province, China
| | - Zhongyuan Ge
- Sanya Nanfan Research Institute of Hainan University, Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Hainan province, China; National Key Laboratory for Tropical Crop Breeding, Hainan University, Hainan province, China; Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan province, China
| | - Haitao Shi
- Sanya Nanfan Research Institute of Hainan University, Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Hainan province, China; National Key Laboratory for Tropical Crop Breeding, Hainan University, Hainan province, China; Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan province, China.
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15
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Yu S, Sahito ZA, Lu M, Huang Q, Du P, Chen D, Lian J, Feng Y, He Z, Yang X. Soil water stress alters differentially relative metabolic pathways affecting growth performance and metal uptake efficiency in a cadmium hyperaccumulator ecotype of Sedum alfredii. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:88986-88997. [PMID: 37450188 DOI: 10.1007/s11356-023-28691-7] [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: 02/27/2023] [Accepted: 07/04/2023] [Indexed: 07/18/2023]
Abstract
Modeling plants for biomass production and metal uptake from surrounding environment is strongly dependent on the moisture content of soil. Therefore, experiments were conducted to find out how soil moisture affects the phenotypic traits, photosynthetic efficiency, metabolic profile, and metal accumulation in the hyperaccumulating ecotype of Sedum alfredii (S. alfredii). A total of six water potential gradients were set: 0 ~ -15 kPa (T1), -15 ~ -30 kPa (T2), -30 ~ -45 kPa (T3), -45 ~ -60 kPa (T4), -60 ~ -75 kPa (T5), and -75 ~ -90 kPa (T6). Different water potential treatments had a significant effect on plant growth and metal uptake efficiency. Compared to T3, T2 was more effective in promoting plant growth and development, with an increase in biomass of 23% and 17% in both fresh weight (FW) and dry weight (DW), respectively. T2 and T3 had the highest cadmium (Cd) content in the shoot (280.2 mg/kg) and (283.3 mg/kg), respectively, whereas T1 had the lowest values (204.7 mg/kg). Cd availability for plants in the soil was affected by moving soil moisture cycles. Changes in soil moisture that were either too high or too low compared to the ideal soil water content for S. alfredii growth resulted in a significant reduction in Cd accumulation in shoots. Tryptophan, phenylalanine, and other amino acids were accumulated in T5, whereas only tryptophan and phenylalanine slightly increased in T1. Sugars and alcohols such as sucrose, trehalose, mannitol, galactinol, and mannobiose increased in T5, while they decreased significantly in T1. Interestingly, in contrast to T1, the two impaired metabolic pathways in T5 (galactose and starch metabolism) were identified to be glucose metabolic pathways. These findings provide scientific information (based on experiments) to improve biomass production and metal uptake efficiency in hyperaccumulating ecotype of S. alfredii for phytoremediation-contaminated agricultural fields.
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Affiliation(s)
- Song Yu
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Zulfiqar Ali Sahito
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Min Lu
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Qiwei Huang
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Pengtao Du
- Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-Saving Fertilizers, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Dan Chen
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Jiapan Lian
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Ying Feng
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Zhenli He
- Institute of Food and Agricultural Sciences, Department of Soil and Water Sciences, Indian River Research and Education Center, University of Florida, Fort Pierce, FL, 34945, USA
| | - Xiaoe Yang
- Ministry of Education (MOE) Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental and Resources Science, Zhejiang University, Hangzhou, 310058, People's Republic of China.
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16
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Zhao H, Ge Z, Zhou M, Zeng H, Wei Y, Liu G, Yan Y, Reiter RJ, He C, Shi H. Histone deacetylase 9 regulates disease resistance through fine-tuning histone deacetylation of melatonin biosynthetic genes and melatonin accumulation in cassava. J Pineal Res 2023; 74:e12861. [PMID: 36750349 DOI: 10.1111/jpi.12861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/05/2023] [Accepted: 02/01/2023] [Indexed: 02/09/2023]
Abstract
Melatonin participates in plant growth and development and biotic and abiotic stress responses. Histone acetylation regulates many plant biological processes via transcriptional reprogramming. However, the direct relationship between melatonin and histone acetylation in plant disease resistance remains unclear. In this study, we identified cassava bacterial blight (CBB) responsive histone deacetylase 9 (HDA9), which negatively regulated disease resistance to CBB by reducing melatonin content. In addition, exogenous melatonin alleviated disease sensitivity of MeHDA9 overexpressed plants to CBB. Importantly, MeHDA9 inhibited the expression of melatonin biosynthetic genes through decreasing lysine 5 of histone 4 (H4K5) acetylation at the promoter regions of melatonin biosynthetic genes, thereby modulating melatonin accumulation in cassava. Furthermore, protein phosphatase 2C 12 (MePP2C12) interacted with MeHDA9 in vivo and in vitro, and it was involved in MeHDA9-mediated disease resistance via melatonin biosynthetic pathway. In summary, this study highlights the direct interaction between histone deacetylation and melatonin biosynthetic genes in cassava disease resistance via histone deacetylation, providing new insights into the genetic improvement of disease resistance via epigenetic regulation of melatonin level in tropical crops.
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Affiliation(s)
- Huiping Zhao
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya and Haikou, Hainan Province, China
| | - Zhongyuan Ge
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya and Haikou, Hainan Province, China
| | - Mengmeng Zhou
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya and Haikou, Hainan Province, China
| | - Hongqiu Zeng
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya and Haikou, Hainan Province, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan Province, China
| | - Yunxie Wei
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya and Haikou, Hainan Province, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan Province, China
| | - Guoyin Liu
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya and Haikou, Hainan Province, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan Province, China
| | - Yu Yan
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya and Haikou, Hainan Province, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan Province, China
| | - Russel J Reiter
- Department of Cellular and Structural Biology, UT Health San Antonio, Long School of Medicine, San Antonio, Texas, USA
| | - Chaozu He
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya and Haikou, Hainan Province, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan Province, China
| | - Haitao Shi
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Sanya and Haikou, Hainan Province, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan Province, China
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17
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Geng L, Ren J, Ji X, Yan S, Song XS. Over-expression of DREB46 enhances drought tolerance in Populus trichocarpa. JOURNAL OF PLANT PHYSIOLOGY 2023; 281:153923. [PMID: 36657232 DOI: 10.1016/j.jplph.2023.153923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 12/20/2022] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
The drought responsive element binding (DREB) gene family has a significant role in plant abiotic stress responses. Here, we cloned a drought-inducible DREB gene, DREB46 (Potri.019G075500), and investigated its function in drought tolerance in Populus trichocarpa. Under treatment with exogenous abscisic acid and 6% PEG6000, DREB46 was rapidly and abundantly expressed. We successfully inserted P. trichocarpa DREB46 constructs into P. trichocarpa. After 11 d of drought stress and 3 d of rehydration treatment, the DREB46 over-expression (OE) lines exhibited significantly increased survival rates relative to the wild type (WT). Histochemical staining showed that the accumulation of reactive oxygen species (ROS) in transgenic plants under drought stress was lower than that in WT plants. Furthermore, OE plants displayed higher superoxide dismutase, peroxidase, and catalase activities and proline content, but lower malondialdehyde content than the WT plants under drought stress. In contrast, DREB46-RNA interference (RNAi) lines exhibited the opposite phenotype. Under PEG-6000 stress, OE plants produced significantly more adventitious roots (ARs) than WT plants. In contrast, RNAi-mediated DREB46-inhibited poplar exhibited fewer ARs. Quantitative real-time PCR indicated that WOX11/12a (Potri.013G066900), a gene related to root growth and development regulation, was significantly increased in OE plants. Additionally, yeast two-hybrid (Y2H) assays showed that DREB46 could interact with protein kinase MPK1 (Potri.002G032100) and protein phosphatase PP2C47 (Potri.007G058700), respectively, and this result was also verified by luciferase complementation assay. Transient co-expression results of leaves showed that PP2C47 and DREB46 Agrobacterium-transformed leaves had strong drought tolerance. These results show that DREB46 plays a key role in drought tolerance by inducing the ROS scavenging system and increasing the number of ARs.
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Affiliation(s)
- Liangzhuang Geng
- Department of Genetics, College of Life Science, Northeast Forestry University, Harbin, 150040, China
| | - Jing Ren
- College of Food Science, Northeast Agricultural University, Harbin, 150030, China
| | - Xiaolong Ji
- Department of Genetics, College of Life Science, Northeast Forestry University, Harbin, 150040, China
| | - Shaopeng Yan
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040, China; Department of Genetics, College of Life Science, Northeast Forestry University, Harbin, 150040, China
| | - Xing Shun Song
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, 150040, China; Department of Genetics, College of Life Science, Northeast Forestry University, Harbin, 150040, China.
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Zhao H, Ge Z, Zhou M, Bai R, Zeng H, Wei Y, He C, Shi H. Histone acetyltransferase HAM1 interacts with molecular chaperone DNAJA2 and confers immune responses through salicylic acid biosynthetic genes in cassava. PLANT, CELL & ENVIRONMENT 2023; 46:635-649. [PMID: 36451539 DOI: 10.1111/pce.14501] [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: 09/19/2022] [Revised: 11/22/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Cassava bacterial blight (CBB) is one of the most serious diseases in cassava production, so it is essential to explore the underlying mechanism of immune responses. Histone acetylation is an important epigenetic modification, however, its relationship with cassava disease resistance remains unclear. Here, we identified 10 histone acetyltransferases in cassava and found that the transcript of MeHAM1 showed the highest induction to CBB. Functional analysis showed that MeHAM1 positively regulated disease resistance to CBB through modulation of salicylic acid (SA) accumulation. Further investigation revealed that MeHAM1 directly activated SA biosynthetic genes' expression via promoting lysine 9 of histone 3 (H3K9) acetylation and lysine 5 of histone 4 (H4K5) acetylation of these genes. In addition, molecular chaperone MeDNAJA2 physically interacted with MeHAM1, and MeDNAJA2 also regulated plant immune responses and SA biosynthetic genes. In conclusion, this study illustrates that MeHAM1 and MeDNAJA2 confer immune responses through transcriptional programming of SA biosynthetic genes via histone acetylation. The MeHAM1 & MeDNAJA2-SA biosynthesis module not only constructs the direct relationship between histone acetylation and cassava disease resistance, but also provides gene network with potential value for genetic improvement of cassava disease resistance.
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Affiliation(s)
- Huiping Zhao
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Key Laboratory for Sustainable Utilization of Tropical Bioresources (Provincial Ministry Building State Key Laboratory Breeding Base), Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Haikou, Hainan, China
| | - Zhongyuan Ge
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Key Laboratory for Sustainable Utilization of Tropical Bioresources (Provincial Ministry Building State Key Laboratory Breeding Base), Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Haikou, Hainan, China
| | - Mengmeng Zhou
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Key Laboratory for Sustainable Utilization of Tropical Bioresources (Provincial Ministry Building State Key Laboratory Breeding Base), Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Haikou, Hainan, China
| | - Ruoyu Bai
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Key Laboratory for Sustainable Utilization of Tropical Bioresources (Provincial Ministry Building State Key Laboratory Breeding Base), Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Haikou, Hainan, China
| | - Hongqiu Zeng
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Key Laboratory for Sustainable Utilization of Tropical Bioresources (Provincial Ministry Building State Key Laboratory Breeding Base), Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Haikou, Hainan, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
| | - Yunxie Wei
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Key Laboratory for Sustainable Utilization of Tropical Bioresources (Provincial Ministry Building State Key Laboratory Breeding Base), Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Haikou, Hainan, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
| | - Chaozu He
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Key Laboratory for Sustainable Utilization of Tropical Bioresources (Provincial Ministry Building State Key Laboratory Breeding Base), Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Haikou, Hainan, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
| | - Haitao Shi
- Key Laboratory of Biotechnology of Salt Tolerant Crops of Hainan Province, Key Laboratory for Sustainable Utilization of Tropical Bioresources (Provincial Ministry Building State Key Laboratory Breeding Base), Sanya Nanfan Research Institute-College of Tropical Crops, Collaborative Innovation Center of Nanfan and High-Efficiency Tropical Agriculture, Hainan University, Haikou, Hainan, China
- Hainan Yazhou Bay Seed Laboratory, Sanya, Hainan, China
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19
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Choi SJ, Lee Z, Kim S, Jeong E, Shim JS. Modulation of lignin biosynthesis for drought tolerance in plants. FRONTIERS IN PLANT SCIENCE 2023; 14:1116426. [PMID: 37152118 PMCID: PMC10157170 DOI: 10.3389/fpls.2023.1116426] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 04/06/2023] [Indexed: 05/09/2023]
Abstract
Lignin is a complex polymer that is embedded in plant cell walls to provide physical support and water protection. For these reasons, the production of lignin is closely linked with plant adaptation to terrestrial regions. In response to developmental cues and external environmental conditions, plants use an elaborate regulatory network to determine the timing and location of lignin biosynthesis. In this review, we summarize the canonical lignin biosynthetic pathway and transcriptional regulatory network of lignin biosynthesis, consisting of NAC and MYB transcription factors, to explain how plants regulate lignin deposition under drought stress. Moreover, we discuss how the transcriptional network can be applied to the development of drought tolerant plants.
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Guo X, Yu X, Xu Z, Zhao P, Zou L, Li W, Geng M, Zhang P, Peng M, Ruan M. CC-type glutaredoxin, MeGRXC3, associates with catalases and negatively regulates drought tolerance in cassava (Manihot esculenta Crantz). PLANT BIOTECHNOLOGY JOURNAL 2022; 20:2389-2405. [PMID: 36053917 PMCID: PMC9674314 DOI: 10.1111/pbi.13920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 08/05/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
Glutaredoxins (GRXs) are essential for reactive oxygen species (ROS) homeostasis in responses of plants to environment changes. We previously identified several drought-responsive CC-type GRXs in cassava, an important tropical crop. However, how CC-type GRX regulates ROS homeostasis of cassava under drought stress remained largely unknown. Here, we report that a drought-responsive CC-type GRX, namely MeGRXC3, was associated with activity of catalase in the leaves of 100 cultivars (or unique unnamed genotypes) of cassava under drought stress. MeGRXC3 negatively regulated drought tolerance by modulating drought- and abscisic acid-induced stomatal closure in transgenic cassava. It antagonistically regulated hydrogen peroxide (H2 O2 ) accumulation in epidermal cells and guard cells. Moreover, MeGRXC3 interacted with two catalases of cassava, MeCAT1 and MeCAT2, and regulated their activity in vivo. Additionally, MeGRXC3 interacts with a cassava TGA transcription factor, MeTGA2, in the nucleus, and regulates the expression of MeCAT7 through a MeTGA2-MeMYB63 pathway. Overall, we demonstrated the roles of MeGRXC3 in regulating activity of catalase at both transcriptional and post-translational levels, therefore involving in ROS homeostasis and stomatal movement in responses of cassava to drought stress. Our study provides the first insights into how MeGRXC3 may be used in molecular breeding of cassava crops.
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Affiliation(s)
- Xin Guo
- Key Laboratory of Biology and Genetic Resources of Tropical CropsInstitute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural SciencesHaikouChina
- Hainan Key Laboratory for Protection and Utilization of Tropical BioresourcesHainan Institute for Tropical Agricultural ResourcesHaikouChina
| | - Xiaoling Yu
- Key Laboratory of Biology and Genetic Resources of Tropical CropsInstitute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural SciencesHaikouChina
- Hainan Key Laboratory for Protection and Utilization of Tropical BioresourcesHainan Institute for Tropical Agricultural ResourcesHaikouChina
| | - Ziyin Xu
- College of Tropical CropsHainan UniversityHaikouChina
| | - Pingjuan Zhao
- Key Laboratory of Biology and Genetic Resources of Tropical CropsInstitute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural SciencesHaikouChina
- Hainan Key Laboratory for Protection and Utilization of Tropical BioresourcesHainan Institute for Tropical Agricultural ResourcesHaikouChina
| | - Liangping Zou
- Key Laboratory of Biology and Genetic Resources of Tropical CropsInstitute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural SciencesHaikouChina
- Hainan Key Laboratory for Protection and Utilization of Tropical BioresourcesHainan Institute for Tropical Agricultural ResourcesHaikouChina
| | - Wenbin Li
- Key Laboratory of Biology and Genetic Resources of Tropical CropsInstitute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural SciencesHaikouChina
- Hainan Key Laboratory for Protection and Utilization of Tropical BioresourcesHainan Institute for Tropical Agricultural ResourcesHaikouChina
| | - Mengting Geng
- College of Tropical CropsHainan UniversityHaikouChina
| | - Peng Zhang
- National Key Laboratory of Plant Molecular GeneticsCAS Center for Excellence in Molecular Plant SciencesShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
| | - Ming Peng
- Key Laboratory of Biology and Genetic Resources of Tropical CropsInstitute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural SciencesHaikouChina
- Hainan Key Laboratory for Protection and Utilization of Tropical BioresourcesHainan Institute for Tropical Agricultural ResourcesHaikouChina
| | - Mengbin Ruan
- Key Laboratory of Biology and Genetic Resources of Tropical CropsInstitute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural SciencesHaikouChina
- Hainan Key Laboratory for Protection and Utilization of Tropical BioresourcesHainan Institute for Tropical Agricultural ResourcesHaikouChina
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21
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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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Xu W, Dou Y, Geng H, Fu J, Dan Z, Liang T, Cheng M, Zhao W, Zeng Y, Hu Z, Huang W. OsGRP3 Enhances Drought Resistance by Altering Phenylpropanoid Biosynthesis Pathway in Rice ( Oryza sativa L.). Int J Mol Sci 2022; 23:ijms23137045. [PMID: 35806050 PMCID: PMC9266740 DOI: 10.3390/ijms23137045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/17/2022] [Accepted: 06/22/2022] [Indexed: 02/07/2023] Open
Abstract
As a sessile organism, rice often faces various kinds of abiotic stresses, such as drought stress. Drought stress seriously harms plant growth and damages crop yield every year. Therefore, it is urgent to elucidate the mechanisms of drought resistance in rice. In this study, we identified a glycine-rich RNA-binding protein, OsGRP3, in rice. Evolutionary analysis showed that it was closely related to OsGR-RBP4, which was involved in various abiotic stresses. The expression of OsGRP3 was shown to be induced by several abiotic stress treatments and phytohormone treatments. Then, the drought tolerance tests of transgenic plants confirmed that OsGRP3 enhanced drought resistance in rice. Meanwhile, the yeast two-hybrid assay, bimolecular luminescence complementation assay and bimolecular fluorescence complementation assay demonstrated that OsGRP3 bound with itself may affect the RNA chaperone function. Subsequently, the RNA-seq analysis, physiological experiments and histochemical staining showed that OsGRP3 influenced the phenylpropanoid biosynthesis pathway and further modulated lignin accumulation. Herein, our findings suggested that OsGRP3 enhanced drought resistance in rice by altering the phenylpropanoid biosynthesis pathway and further increasing lignin accumulation.
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Affiliation(s)
- Wuwu Xu
- State Key Laboratory of Hybrid Rice, Wuhan University, Wuhan 430072, China; (W.X.); (Y.D.); (H.G.); (J.F.); (Z.D.); (T.L.); (M.C.); (W.Z.); (Y.Z.); (Z.H.)
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Yangfan Dou
- State Key Laboratory of Hybrid Rice, Wuhan University, Wuhan 430072, China; (W.X.); (Y.D.); (H.G.); (J.F.); (Z.D.); (T.L.); (M.C.); (W.Z.); (Y.Z.); (Z.H.)
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Han Geng
- State Key Laboratory of Hybrid Rice, Wuhan University, Wuhan 430072, China; (W.X.); (Y.D.); (H.G.); (J.F.); (Z.D.); (T.L.); (M.C.); (W.Z.); (Y.Z.); (Z.H.)
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Jinmei Fu
- State Key Laboratory of Hybrid Rice, Wuhan University, Wuhan 430072, China; (W.X.); (Y.D.); (H.G.); (J.F.); (Z.D.); (T.L.); (M.C.); (W.Z.); (Y.Z.); (Z.H.)
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Zhiwu Dan
- State Key Laboratory of Hybrid Rice, Wuhan University, Wuhan 430072, China; (W.X.); (Y.D.); (H.G.); (J.F.); (Z.D.); (T.L.); (M.C.); (W.Z.); (Y.Z.); (Z.H.)
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Ting Liang
- State Key Laboratory of Hybrid Rice, Wuhan University, Wuhan 430072, China; (W.X.); (Y.D.); (H.G.); (J.F.); (Z.D.); (T.L.); (M.C.); (W.Z.); (Y.Z.); (Z.H.)
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Mingxing Cheng
- State Key Laboratory of Hybrid Rice, Wuhan University, Wuhan 430072, China; (W.X.); (Y.D.); (H.G.); (J.F.); (Z.D.); (T.L.); (M.C.); (W.Z.); (Y.Z.); (Z.H.)
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Weibo Zhao
- State Key Laboratory of Hybrid Rice, Wuhan University, Wuhan 430072, China; (W.X.); (Y.D.); (H.G.); (J.F.); (Z.D.); (T.L.); (M.C.); (W.Z.); (Y.Z.); (Z.H.)
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Yafei Zeng
- State Key Laboratory of Hybrid Rice, Wuhan University, Wuhan 430072, China; (W.X.); (Y.D.); (H.G.); (J.F.); (Z.D.); (T.L.); (M.C.); (W.Z.); (Y.Z.); (Z.H.)
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Zhongli Hu
- State Key Laboratory of Hybrid Rice, Wuhan University, Wuhan 430072, China; (W.X.); (Y.D.); (H.G.); (J.F.); (Z.D.); (T.L.); (M.C.); (W.Z.); (Y.Z.); (Z.H.)
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Wenchao Huang
- State Key Laboratory of Hybrid Rice, Wuhan University, Wuhan 430072, China; (W.X.); (Y.D.); (H.G.); (J.F.); (Z.D.); (T.L.); (M.C.); (W.Z.); (Y.Z.); (Z.H.)
- College of Life Sciences, Wuhan University, Wuhan 430072, China
- Correspondence:
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23
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Wang P, Yan Y, Lu Y, Liu G, Liu J, Shi H. The co-modulation of RAV transcription factors in ROS burst and extensive transcriptional reprogramming underlies disease resistance in cassava. PLANT CELL REPORTS 2022; 41:1261-1272. [PMID: 35275280 DOI: 10.1007/s00299-022-02855-0] [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: 12/20/2021] [Accepted: 02/25/2022] [Indexed: 06/14/2023]
Abstract
MeRAVs positively regulate ROS burst and the expression of downstream disease resistance-related genes, which underlie improved disease resistance to Xam. Cassava (Manihot esculenta Crantz) is an important food crop and energy crop, but its yield is seriously affected by cassava bacterial blight (CBB) caused by Xanthomonas axonopodis pv. manihotis (Xam). Related to ABI3/VP1 (RAV) transcription factor family belongs to the APETALA2/Ethylene-Responsive Factor (AP2/ERF) family, which plays an important role in plant growth, development and response to biotic and abiotic stresses. In this study, we found that MeRAVs positively co-regulates the resistance to Xam and stimulates the innate immune response by regulating reactive oxygen species (ROS) burst in cassava. Dual-luciferase assay showed that seven MeRAVs exhibited transcriptional activate activity by binding CAACA motif and CACCTG motif. A large number of differentially expressed genes (DEGs) were identified through RNA-seq analysis of MeRAVs-silenced lines, and the DEGs co-regulated by seven MeRAVs accounted for more than 45% of the total DEGs. In addition, seven MeRAVs positively regulate expression of disease resistance-related genes through directly binding to their promoters. In summary, MeRAVs co-regulate ROS burst and the expression of downstream disease resistance-related genes, which underlie improved disease resistance to Xam.
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Affiliation(s)
- Peng Wang
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, 570228, Hainan Province, China
| | - Yu Yan
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, 570228, Hainan Province, China
| | - Yi Lu
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, 570228, Hainan Province, China
| | - Guoyin Liu
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, 570228, Hainan Province, China
| | - Jinping Liu
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, 570228, Hainan Province, China.
| | - Haitao Shi
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, College of Tropical Crops, Hainan University, Haikou, 570228, Hainan Province, China.
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Liu H, Gao J, Sun J, Li S, Zhang B, Wang Z, Zhou C, Sulis DB, Wang JP, Chiang VL, Li W. Dimerization of PtrMYB074 and PtrWRKY19 mediates transcriptional activation of PtrbHLH186 for secondary xylem development in Populus trichocarpa. THE NEW PHYTOLOGIST 2022; 234:918-933. [PMID: 35152419 PMCID: PMC9314101 DOI: 10.1111/nph.18028] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 02/02/2022] [Indexed: 05/28/2023]
Abstract
Wood formation is controlled by transcriptional regulatory networks (TRNs) involving regulatory homeostasis determined by combinations of transcription factor (TF)-DNA and TF-TF interactions. Functions of TF-TF interactions in wood formation are still in the early stages of identification. PtrMYB074 is a woody dicot-specific TF in a TRN for wood formation in Populus trichocarpa. Here, using yeast two-hybrid and bimolecular fluorescence complementation, we conducted a genome-wide screening for PtrMYB074 interactors and identified 54 PtrMYB074-TF pairs. Of these pairs, 53 are novel. We focused on the PtrMYB074-PtrWRKY19 pair, the most highly expressed and xylem-specific interactor, and its direct transregulatory target, PtrbHLH186, the xylem-specific one of the pair's only two direct TF target genes. Using transient and CRISPR-mediated transgenesis in P. trichocarpa coupled with chromatin immunoprecipitation and electrophoretic mobility shift assays, we demonstrated that PtrMYB074 is recruited by PtrWRKY19 and that the PtrMYB074-PtrWRKY19 dimers are required to transactive PtrbHLH186. Overexpressing PtrbHLH186 in P. trichocarpa resulted in retarded plant growth, increased guaiacyl lignin, a higher proportion of smaller stem vessels and strong drought-tolerant phenotypes. Knowledge of the PtrMYB074-PtrWRKY19-PtrbHLH186 regulation may help design genetic controls of optimal growth and wood formation to maximize beneficial wood properties while minimizing negative effects on growth.
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Affiliation(s)
- Huizi Liu
- State Key Laboratory of Tree Genetics and BreedingNortheast Forestry UniversityHarbin150040China
| | - Jinghui Gao
- State Key Laboratory of Tree Genetics and BreedingNortheast Forestry UniversityHarbin150040China
| | - Jiatong Sun
- State Key Laboratory of Tree Genetics and BreedingNortheast Forestry UniversityHarbin150040China
| | - Shuang Li
- State Key Laboratory of Tree Genetics and BreedingNortheast Forestry UniversityHarbin150040China
| | - Baofeng Zhang
- State Key Laboratory of Tree Genetics and BreedingNortheast Forestry UniversityHarbin150040China
| | - Zhuwen Wang
- State Key Laboratory of Tree Genetics and BreedingNortheast Forestry UniversityHarbin150040China
| | - Chenguang Zhou
- State Key Laboratory of Tree Genetics and BreedingNortheast Forestry UniversityHarbin150040China
| | - Daniel Barletta Sulis
- Forest Biotechnology GroupDepartment of Forestry and Environmental ResourcesNorth Carolina State UniversityRaleighNC27695USA
| | - Jack P. Wang
- State Key Laboratory of Tree Genetics and BreedingNortheast Forestry UniversityHarbin150040China
- Forest Biotechnology GroupDepartment of Forestry and Environmental ResourcesNorth Carolina State UniversityRaleighNC27695USA
| | - Vincent L. Chiang
- State Key Laboratory of Tree Genetics and BreedingNortheast Forestry UniversityHarbin150040China
- Forest Biotechnology GroupDepartment of Forestry and Environmental ResourcesNorth Carolina State UniversityRaleighNC27695USA
| | - Wei Li
- State Key Laboratory of Tree Genetics and BreedingNortheast Forestry UniversityHarbin150040China
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25
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Fathima AA, Sanitha M, Tripathi L, Muiruri S. Cassava (
Manihot esculenta
) dual use for food and bioenergy: A review. Food Energy Secur 2022. [DOI: 10.1002/fes3.380] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- Anwar Aliya Fathima
- Department of Bioinformatics Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Chennai India
| | - Mary Sanitha
- Department of Bioinformatics Saveetha School of Engineering Saveetha Institute of Medical and Technical Sciences Chennai India
| | - Leena Tripathi
- International Institute of Tropical Agriculture (IITA) Nairobi Kenya
| | - Samwel Muiruri
- International Institute of Tropical Agriculture (IITA) Nairobi Kenya
- Department of Plant Sciences Kenyatta University Nairobi Kenya
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26
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Yang J, Chen Y, Gao M, Wu L, Xiong S, Wang S, Gao J, Zhao Y, Wang Y. Comprehensive identification of bHLH transcription factors in Litsea cubeba reveals candidate gene involved in the monoterpene biosynthesis pathway. FRONTIERS IN PLANT SCIENCE 2022; 13:1081335. [PMID: 36618662 PMCID: PMC9811127 DOI: 10.3389/fpls.2022.1081335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 11/21/2022] [Indexed: 05/13/2023]
Abstract
Litsea cubeba (Lour.) Person, an economically important aromatic plant producing essential oils, has lemon-like fragrance and 96.44-98.44% monoterpene contents. bHLH transcription factor plays an important role in plant secondary metabolism and terpene biosynthesis. In this study, we used bioinformatics to identify bHLH transcription factors in L. cubeba, 173 bHLH genes were identified from L. cubeba and divided these into 26 subfamilies based on phylogenetic analysis. The majority of bHLHs in each subfamily shared comparable structures and motifs. While LcbHLHs were unevenly distributed across 12 chromosomes, 10 tandem repeats were discovered. Expression profiles of bHLH genes in different tissues demonstrated that LcbHLH78 is a potential candidate gene for regulating monoterpene biosynthesis. LcbHLH78 and the terpene synthase LcTPS42 showed comparable expression patterns in various tissues and fruit development stages of L. cubeba. Subcellular localization analysis revealed that LcbHLH78 protein localizes to the nucleus, consistent with a transcription factor function. Importantly, transient overexpression of LcbHLH78 increased geraniol and linalol contents. Our research demonstrates that LcbHLH78 enhances terpenoid biosynthesis. This finding will be beneficial for improving the quality of L. cubeba and provides helpful insights for further research into the control mechanism of LcbHLH genes over terpenoid biosynthesis.
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Affiliation(s)
- Jiahui Yang
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, HangZhou, Zhejiang, China
| | - Yicun Chen
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, HangZhou, Zhejiang, China
| | - Ming Gao
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, HangZhou, Zhejiang, China
| | - Liwen Wu
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, HangZhou, Zhejiang, China
| | - Shifa Xiong
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, HangZhou, Zhejiang, China
| | - Siqi Wang
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, HangZhou, Zhejiang, China
| | - Jing Gao
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, HangZhou, Zhejiang, China
| | - Yunxiao Zhao
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, HangZhou, Zhejiang, China
- *Correspondence: Yunxiao Zhao, ; Yangdong Wang,
| | - Yangdong Wang
- State Key Laboratory of Tree Genetics and Breeding, Chinese Academy of Forestry, Beijing, China
- Research Institute of Subtropical Forestry, Chinese Academy of Forestry, HangZhou, Zhejiang, China
- *Correspondence: Yunxiao Zhao, ; Yangdong Wang,
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27
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An F, Xiao X, Chen T, Xue J, Luo X, Ou W, Li K, Cai J, Chen S. Systematic Analysis of bHLH Transcription Factors in Cassava Uncovers Their Roles in Postharvest Physiological Deterioration and Cyanogenic Glycosides Biosynthesis. FRONTIERS IN PLANT SCIENCE 2022; 13:901128. [PMID: 35789698 PMCID: PMC9249602 DOI: 10.3389/fpls.2022.901128] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 05/09/2022] [Indexed: 05/15/2023]
Abstract
The basic helix-loop-helix (bHLH) proteins are a large superfamily of transcription factors, and play a central role in a wide range of metabolic, physiological, and developmental processes in higher organisms. However, systematic investigation of bHLH gene family in cassava (Manihot esculenta Crantz) has not been reported. In the present study, we performed a genome-wide survey and identified 148 MebHLHs genes were unevenly harbored in 18 chromosomes. Through phylogenetic analyses along with Arabidopsis counterparts, these MebHLHs genes were divided into 19 groups, and each gene contains a similar structure and conserved motifs. Moreover, many cis-acting regulatory elements related to various defense and stress responses showed in MebHLH genes. Interestingly, transcriptome data analyses unveiled 117 MebHLH genes during postharvest physiological deterioration (PPD) process of cassava tuberous roots, while 65 MebHLH genes showed significantly change. Meanwhile, the relative quantitative analysis of 15 MebHLH genes demonstrated that they were sensitive to PPD, suggesting they may involve in PPD process regulation. Cyanogenic glucosides (CGs) biosynthesis during PPD process was increased, silencing of MebHLH72 and MebHLH114 showed that linamarin content was significantly decreased in the leaves. To summarize, the genome-wide identification and expression profiling of MebHLH candidates pave a new avenue for uderstanding their function in PPD and CGs biosynthesis, which will accelerate the improvement of PPD tolerance and decrease CGs content in cassava tuberous roots.
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Affiliation(s)
- Feifei An
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
- School of Life Sciences, Hainan University, Haikou, China
| | - Xinhui Xiao
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Ting Chen
- Postgraduate Department, Hainan Normal University, Haikou, China
| | - Jingjing Xue
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Xiuqin Luo
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Wenjun Ou
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Kaimian Li
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
| | - Jie Cai
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
- Jie Cai,
| | - Songbi Chen
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Ministry of Agriculture for Germplasm Resources Conservation and Utilization of Cassava, Haikou, China
- *Correspondence: Songbi Chen,
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28
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Nogia P, Pati PK. Plant Secondary Metabolite Transporters: Diversity, Functionality, and Their Modulation. FRONTIERS IN PLANT SCIENCE 2021; 12:758202. [PMID: 34777438 PMCID: PMC8580416 DOI: 10.3389/fpls.2021.758202] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/01/2021] [Indexed: 05/04/2023]
Abstract
Secondary metabolites (SMs) play crucial roles in the vital functioning of plants such as growth, development, defense, and survival via their transportation and accumulation at the required site. However, unlike primary metabolites, the transport mechanisms of SMs are not yet well explored. There exists a huge gap between the abundant presence of SM transporters, their identification, and functional characterization. A better understanding of plant SM transporters will surely be a step forward to fulfill the steeply increasing demand for bioactive compounds for the formulation of herbal medicines. Thus, the engineering of transporters by modulating their expression is emerging as the most viable option to achieve the long-term goal of systemic metabolic engineering for enhanced metabolite production at minimum cost. In this review article, we are updating the understanding of recent advancements in the field of plant SM transporters, particularly those discovered in the past two decades. Herein, we provide notable insights about various types of fully or partially characterized transporters from the ABC, MATE, PUP, and NPF families including their diverse functionalities, structural information, potential approaches for their identification and characterization, several regulatory parameters, and their modulation. A novel perspective to the concept of "Transporter Engineering" has also been unveiled by highlighting its potential applications particularly in plant stress (biotic and abiotic) tolerance, SM accumulation, and removal of anti-nutritional compounds, which will be of great value for the crop improvement program. The present study creates a roadmap for easy identification and a better understanding of various transporters, which can be utilized as suitable targets for transporter engineering in future research.
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Affiliation(s)
| | - Pratap Kumar Pati
- Department of Biotechnology, Guru Nanak Dev University, Amritsar, India
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