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Huang S, Shen Z, An R, Jia Q, Wang D, Wei S, Mu J, Zhang Y. Identification and characterization of the plasma membrane H +-ATPase genes in Brassica napus and functional analysis of BnHA9 in salt tolerance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 210:108566. [PMID: 38554537 DOI: 10.1016/j.plaphy.2024.108566] [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: 12/27/2023] [Revised: 03/05/2024] [Accepted: 03/25/2024] [Indexed: 04/01/2024]
Abstract
As a primary proton pump, plasma membrane (PM) H+-ATPase plays critical roles in regulating plant growth, development, and stress responses. PM H+-ATPases have been well characterized in many plant species. However, no comprehensive study of PM H+-ATPase genes has been performed in Brassica napus (rapeseed). In this study, we identified 32 PM H+-ATPase genes (BnHAs) in the rapeseed genome, and they were distributed on 16 chromosomes. Phylogenetical and gene duplication analyses showed that the BnHA genes were classified into five subfamilies, and the segmental duplication mainly contributed to the expansion of the rapeseed PM H+-ATPase gene family. The conserved domain and subcellular analyses indicated that BnHAs encoded canonical PM H+-ATPase proteins with 14 highly conserved domains and localized on PM. Cis-acting regulatory element and expression pattern analyses indicated that the expression of BnHAs possessed tissue developmental stage specificity. The 25 upstream open reading frames with the canonical initiation codon ATG were predicted in the 5' untranslated regions of 11 BnHA genes and could be used as potential target sites for improving rapeseed traits. Protein interaction analysis showed that BnBRI1.c associated with BnHA2 and BnHA17, indicating that the conserved activity regulation mechanism of BnHAs may be present in rapeseed. BnHA9 overexpression in Arabidopsis enhanced the salt tolerance of the transgenic plants. Thus, our results lay a foundation for further research exploring the biological functions of PM H+-ATPases in rapeseed.
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Affiliation(s)
- Shuhua Huang
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling, 712100, Shaanxi, China
| | - Zhen Shen
- College of Horticulture, Northwest A&F University, Yangling, 712100, China
| | - Ran An
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling, 712100, Shaanxi, China
| | - Qingli Jia
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling, 712100, Shaanxi, China
| | - Daojie Wang
- Key Laboratory of Plant Stress Biology, State Key Laboratory of Cotton Biology, School of Life Sciences, Henan University, Kaifeng, 475004, China
| | - Shihao Wei
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling, 712100, Shaanxi, China
| | - Jianxin Mu
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling, 712100, Shaanxi, China.
| | - Yanfeng Zhang
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling, 712100, Shaanxi, China.
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Qi F, Wang F, Xiaoyang C, Wang Z, Lin Y, Peng Z, Zhang J, Wang N, Zhang J. Gene Expression Analysis of Different Organs and Identification of AP2 Transcription Factors in Flax ( Linum usitatissimum L.). PLANTS (BASEL, SWITZERLAND) 2023; 12:3260. [PMID: 37765422 PMCID: PMC10535939 DOI: 10.3390/plants12183260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/08/2023] [Accepted: 09/09/2023] [Indexed: 09/29/2023]
Abstract
Flax (Linum usitatissimum L.) is an important oilseed crop widely cultivated for its oil and fiber. This study conducted transcriptome analysis to analyze the gene expression profiles of roots, leaves, stamens, pistils, and fruits in the flax cultivar Longya10. A total of 43,471 genes were detected in the RNA-seq data, with 34,497 genes showing differential expression levels between different organs. Gene expression patterns varied across different organs, with differences observed in expression-regulating genes within specific organs. However, 23,448 genes were found to be commonly expressed across all organs. Further analysis revealed organ-specific gene expressions, with 236, 690, 544, 909, and 1212 genes identified in pistils, fruits, leaves, roots, and stamens, respectively. Gene Ontology (GO) enrichment analysis was performed on these organ-specific genes, and significant enrichment was observed in various biological processes, cellular components, and molecular functions, providing new insights for the specific growth patterns of flax organs. Furthermore, we investigated the expression differences of AP2 transcription factors in various tissues and organs of Longya10. We identified 96 AP2 genes that were differentially expressed in different organs and annotated them into various biological pathways. Our results suggest that AP2 transcription factors may play important roles in regulating the growth and development of flax organs including stress response. In summary, our study provides a comprehensive analysis of gene expression patterns in different organs and tissues of flax plant and identifies potential critical regulators of flax organ growth and development. These findings contribute to a better understanding of the molecular mechanisms underlying flax organ development and may have important implications for the genetic improvement of flax crops.
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Affiliation(s)
- Fan Qi
- Faculty of Agronomy, Jilin Agricultural University, Changchun 130000, China; (F.Q.); (F.W.); (C.X.); (Z.W.); (Y.L.); (J.Z.)
| | - Fu Wang
- Faculty of Agronomy, Jilin Agricultural University, Changchun 130000, China; (F.Q.); (F.W.); (C.X.); (Z.W.); (Y.L.); (J.Z.)
| | - Chunxiao Xiaoyang
- Faculty of Agronomy, Jilin Agricultural University, Changchun 130000, China; (F.Q.); (F.W.); (C.X.); (Z.W.); (Y.L.); (J.Z.)
| | - Zhenhui Wang
- Faculty of Agronomy, Jilin Agricultural University, Changchun 130000, China; (F.Q.); (F.W.); (C.X.); (Z.W.); (Y.L.); (J.Z.)
| | - Yujie Lin
- Faculty of Agronomy, Jilin Agricultural University, Changchun 130000, China; (F.Q.); (F.W.); (C.X.); (Z.W.); (Y.L.); (J.Z.)
| | - Zhanwu Peng
- Information Center, Jilin Agricultural University, Changchun 130000, China;
| | - Jun Zhang
- Faculty of Agronomy, Jilin Agricultural University, Changchun 130000, China; (F.Q.); (F.W.); (C.X.); (Z.W.); (Y.L.); (J.Z.)
| | - Ningning Wang
- Faculty of Agronomy, Jilin Agricultural University, Changchun 130000, China; (F.Q.); (F.W.); (C.X.); (Z.W.); (Y.L.); (J.Z.)
| | - Jian Zhang
- Faculty of Agronomy, Jilin Agricultural University, Changchun 130000, China; (F.Q.); (F.W.); (C.X.); (Z.W.); (Y.L.); (J.Z.)
- Department of Biology, University of British Columbia Okanagan, Kelowna, BC V1V 1V7, Canada
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Dao J, Xing Y, Chen C, Chen M, Wang Z. Adaptation of rhizosphere bacterial communities of drought-resistant sugarcane varieties under different degrees of drought stress. Microbiol Spectr 2023; 11:e0118423. [PMID: 37698408 PMCID: PMC10580969 DOI: 10.1128/spectrum.01184-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 07/12/2023] [Indexed: 09/13/2023] Open
Abstract
Sugarcane is highly sensitive to changes in moisture, and increased drought severely restricts its growth and productivity. Recent studies have shown that plant growth-promoting microorganisms are essential to reduce the adverse effects of environmental stresses, especially drought. However, our knowledge about the dynamics of rhizosphere microbial community structure in sugarcane under varying degrees of drought stress is limited. We analyzed the effects of different degrees of drought stress on the rhizosphere microbial communities of Zhongzhe 1(ZZ1) and Zhongzhe 6(ZZ6) with differences in drought resistance, by combining soil enzyme activity, nutrient content, and physiological and morphological characteristics of sugarcane roots. The results showed that rhizosphere bacterial community began to change at a field capacity of 50%, enriching the sugarcane rhizosphere with drought-resistant bacteria. The core strains of ZZ1 and ZZ6 rhizosphere enrichment were mainly Streptomycetales, Sphingomonadales, and Rhizobiales. However, compared to ZZ1, the changes in rhizosphere bacterial abundance in ZZ6 were primarily associated with the abundance of Streptomycetales as drought levels increased. Rhizobiales and Streptomycetales, enriched in the rhizosphere of ZZ6 under drought, were positively correlated with root tip number and total root length (TRL), increasing the distribution area of roots and, thus, improving water and nutrient uptake by the roots thereby enhancing the resistance of sugarcane to drought stress. This research enhances our understanding of the composition of the rhizosphere microbial community in sugarcane under different levels of drought stress and its interaction with the roots, thereby providing valuable insights for enhancing drought resistance in sugarcane. IMPORTANCE Drought stress is expected to further increase in intensity, frequency, and duration, causing substantial losses in sugarcane yields. Here, we exposed sugarcane to varying degrees of drought treatment during growth and quantified the eventual composition of the resulting sugarcane rhizosphere bacterial community groups. We found that sugarcane rhizosphere under mild drought began to recruit specific bacterial communities to resist drought stress and used the interactions of root tip number, total root length, and drought-resistant strains to improve sugarcane survival under drought. This research provides a theoretical basis for the rhizosphere microbiome to help sugarcane improve its resistance under different levels of drought stress.
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Affiliation(s)
- Jicao Dao
- Guangxi Key Laboratory of Sugarcane Biology, Nanning, Guangxi, China
- State Key Laboratory for Conservation & Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China
- College of Agronomy, Guangxi University, Nanning, Guangxi, China
| | - Yuanjun Xing
- Guangxi Key Laboratory of Sugarcane Biology, Nanning, Guangxi, China
- State Key Laboratory for Conservation & Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China
- College of Agronomy, Guangxi University, Nanning, Guangxi, China
| | - Chunyi Chen
- Guangxi Key Laboratory of Sugarcane Biology, Nanning, Guangxi, China
- State Key Laboratory for Conservation & Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China
- College of Agronomy, Guangxi University, Nanning, Guangxi, China
| | - Mianhe Chen
- Guangxi Key Laboratory of Sugarcane Biology, Nanning, Guangxi, China
- State Key Laboratory for Conservation & Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China
- College of Agronomy, Guangxi University, Nanning, Guangxi, China
| | - Ziting Wang
- Guangxi Key Laboratory of Sugarcane Biology, Nanning, Guangxi, China
- State Key Laboratory for Conservation & Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China
- College of Agronomy, Guangxi University, Nanning, Guangxi, China
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Photosynthesis and Salt Exclusion Are Key Physiological Processes Contributing to Salt Tolerance of Canola ( Brassica napus L.): Evidence from Physiology and Transcriptome Analysis. Genes (Basel) 2022; 14:genes14010003. [PMID: 36672744 PMCID: PMC9858917 DOI: 10.3390/genes14010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/24/2022] Open
Abstract
Plant salt tolerance is controlled by various physiological processes such as water and ion homeostasis, photosynthesis, and cellular redox balance, which are in turn controlled by gene expression. In the present study, plants of six canola cultivars (DGL, Dunkled, Faisal Canola, Cyclone, Legend, and Oscar) were evaluated for salt tolerance by subjecting them to 0 or 200 mM NaCl stress. Based on growth, cultivars DGL, Dunkled, and Faisal Canola were ranked as salt tolerant, while cultivars Cyclone, Legend, and Oscar were ranked as salt-sensitive ones. Differential salt tolerance in these canola cultivars was found to be associated with a relatively lower accumulation of Na+ and greater accumulation of K+ in the leaves, lower oxidative damage (MDA), and better antioxidative defense system (Superoxide dismutase, SOD; peroxidase, POD, and catalase, CAT). Cultivar Oscar was the poorest to discriminate Na+ and K+ uptake and accumulation in leaves and had poor antioxidant potential to scavenge ROS. Salt stress did not affect the structural stability of photosystem-II (PSII) till three weeks, thereafter it caused a significant decrease. Salt stress increased the performance index (PIABS) by increasing the density of active reaction centers in Oscar. Salt stress decreased the antenna size thereby lowering the absorption and trapping energy flux, and maintaining the electron transport with an increase in heat dissipation. This may represent a potential mechanism to cope with salt stress. Transcriptome analysis of salt-sensitive cultivar Oscar further revealed that salt stress down-regulated DEGs related to hormonal signal transduction pathways, photosynthesis, and transcription factors, while DEGs related to the biosynthesis of amino acid and ion transport were up-regulated. In conclusion, salt tolerance in canola cultivars was associated with ion exclusion and maintenance of photosynthesis. Salt stress sensitivity in cultivar Oscar was mainly associated with poor control of ion homeostasis which caused oxidative stress and reduced photosynthetic efficiency.
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Weng W, Lu X, Zhou M, Gao A, Yao X, Tang Y, Wu W, Ma C, Bai Q, Xiong R, Ruan J. FtbZIP12 Positively Regulates Responses to Osmotic Stress in Tartary Buckwheat. Int J Mol Sci 2022; 23:ijms232113072. [PMID: 36361858 PMCID: PMC9658761 DOI: 10.3390/ijms232113072] [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: 10/06/2022] [Revised: 10/21/2022] [Accepted: 10/24/2022] [Indexed: 11/16/2022] Open
Abstract
ABFs play a key role in regulating plant osmotic stress. However, in Tartary buckwheat, data on the role of ABF genes in osmotic stress remain limited and its associated mechanism in osmoregulation remain nebulous. Herein, a novel ABF family in Tartary buckwheat, FtbZIP12, was cloned and characterized. FtbZIP12 is a transcriptional activator located in the nucleus; its expression is induced by NaCl, mannitol, and abscisic acid (ABA). Atopic expression of FtbZIP12 in Arabidopsis promoted seed germination, reduced damage to primary roots, and improved the tolerance of seedlings to osmotic stress. The quantitative realtime polymerase chain reaction (RT-qPCR) results showed that the expressions of the typical genes related to stress, the SOS pathway, and the proline synthesis pathway in Arabidopsis were significantly (p < 0.05) upregulated under osmotic stress. FtbZIP12 improved the osmotic pressure resistance by reducing the damage caused by reactive oxygen species to plants and maintained plant homeostasis by upregulating the expression of genes related to stress, osmotic regulation, and ion homeostasis. This study identified a key candidate gene for understanding the mechanism underlying osmotic-stress-regulated function in Tartary buckwheat, thereby providing a theoretical basis for improving its yield and quality.
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Affiliation(s)
- Wenfeng Weng
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Xiang Lu
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Meiliang Zhou
- Institute of Crop Science, Chinese Academy of Agriculture Science, Beijing 100081, China
| | - Anjing Gao
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Xin Yao
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Yong Tang
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Weijiao Wu
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Chao Ma
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Qing Bai
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Ruiqi Xiong
- College of Agronomy, Guizhou University, Guiyang 550025, China
| | - Jingjun Ruan
- College of Agronomy, Guizhou University, Guiyang 550025, China
- Correspondence:
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6
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Shu J, Ma X, Ma H, Huang Q, Zhang Y, Guan M, Guan C. Transcriptomic, proteomic, metabolomic, and functional genomic approaches of Brassica napus L. during salt stress. PLoS One 2022; 17:e0262587. [PMID: 35271582 PMCID: PMC8912142 DOI: 10.1371/journal.pone.0262587] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 12/30/2021] [Indexed: 12/30/2022] Open
Abstract
Environmental abiotic stresses limit plant growth, development, and reproduction. This study aims to reveal the response of Brassica napus to salt stress. Here, transcriptomics, metabolomics, and proteomics analysis were performed on 15 Brassica napus leave samples treated with salt at different times. Through functional enrichment analyzing the differentially expressed genes (DEGs), differential metabolites (DMs) and differentially expressed proteins (DEPs), the key factors that dominate Brassica napus response to salt stress were identified. The results showed that the two key hormones responding to salt stress were Abscisic acid (ABA) and jasmonic acid (JA). Salt stress for 24h is an important milestone. Brassica napus adjusted multiple pathways at 24h to avoid over-response to salt stress and cause energy consumption. The increased expression in BnPP2C is tangible evidence. In response to salt stress, JA and ABA work together to reduce the damage caused by salt stress in Brassica napus. The increased expression of all BnJAZs after salt stress highlighted the function of JA that cannot be ignored responding to salt stress. In addition, some metabolites, such as N-acetyl-5-hydroxytryptamine, L-Cysteine and L-(+)-Arginine, play a critical role in maintaining the balance of ROS. Proteins like catalase-3, cysteine desulfurase, HSP90 and P450_97A3 were the most critical differential proteins in response to salt stress. These findings of this study provide data support for Brassica napus breeding.
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Affiliation(s)
- Jiabin Shu
- The Oilseed Crop Research Institute, National Oilseed Crop Improvement Center (Hunan), Hunan Agricultural University, Hunan, China
- Quzhou Academy of Agricultural and Forestry Sciences, Quzhou, Zhejiang, China
| | - Xiao Ma
- The Oilseed Crop Research Institute, National Oilseed Crop Improvement Center (Hunan), Hunan Agricultural University, Hunan, China
| | - Hua Ma
- The Oilseed Crop Research Institute, National Oilseed Crop Improvement Center (Hunan), Hunan Agricultural University, Hunan, China
| | - Qiurong Huang
- The Oilseed Crop Research Institute, National Oilseed Crop Improvement Center (Hunan), Hunan Agricultural University, Hunan, China
| | - Ye Zhang
- The Oilseed Crop Research Institute, National Oilseed Crop Improvement Center (Hunan), Hunan Agricultural University, Hunan, China
| | - Mei Guan
- The Oilseed Crop Research Institute, National Oilseed Crop Improvement Center (Hunan), Hunan Agricultural University, Hunan, China
| | - Chunyun Guan
- The Oilseed Crop Research Institute, National Oilseed Crop Improvement Center (Hunan), Hunan Agricultural University, Hunan, China
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Wang W, Pang J, Zhang F, Sun L, Yang L, Fu T, Guo L, Siddique KHM. Salt‑responsive transcriptome analysis of canola roots reveals candidate genes involved in the key metabolic pathway in response to salt stress. Sci Rep 2022; 12:1666. [PMID: 35102232 PMCID: PMC8803978 DOI: 10.1038/s41598-022-05700-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 01/10/2022] [Indexed: 11/21/2022] Open
Abstract
Salinity is a major constraint on crop growth and productivity, limiting sustainable agriculture in arid regions. Understanding the molecular mechanisms of salt-stress adaptation in canola is important to improve salt tolerance and promote its cultivation in saline lands. In this study, roots of control (no salt) and 200 mM NaCl-stressed canola seedlings were collected for RNA-Seq analysis and qRT-PCR validation. A total of 5385, 4268, and 7105 DEGs at the three time points of salt treatment compared to the control were identified, respectively. Several DEGs enriched in plant signal transduction pathways were highly expressed under salt stress, and these genes play an important role in signaling and scavenging of ROS in response to salt stress. Transcript expression in canola roots differed at different stages of salt stress, with the early-stages (2 h) of salt stress mainly related to oxidative stress response and sugar metabolism, while the late-stages (72 h) of salt stress mainly related to transmembrane movement, amino acid metabolism, glycerol metabolism and structural components of the cell wall. Several families of TFs that may be associated with salt tolerance were identified, including ERF, MYB, NAC, WRKY, and bHLH. These results provide a basis for further studies on the regulatory mechanisms of salt stress adaptation in canola.
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Luo Y, Teng S, Yin H, Zhang S, Tuo X, Tran LSP. Transcriptome Analysis Reveals Roles of Anthocyanin- and Jasmonic Acid-Biosynthetic Pathways in Rapeseed in Response to High Light Stress. Int J Mol Sci 2021; 22:ijms222313027. [PMID: 34884828 PMCID: PMC8657659 DOI: 10.3390/ijms222313027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/24/2021] [Accepted: 11/27/2021] [Indexed: 12/11/2022] Open
Abstract
Rapeseed (Brassica napus) is one of the major important oil crops worldwide and is largely cultivated in the Qinghai-Tibetan plateau (QTP), where long and strong solar-radiation is well-known. However, the molecular mechanisms underlying rapeseed's response to light stress are largely unknown. In the present study, the color of rapeseed seedlings changed from green to purple under high light (HL) stress conditions. Therefore, changes in anthocyanin metabolism and the transcriptome of rapeseed seedlings cultured under normal light (NL) and HL conditions were analyzed to dissect how rapeseed responds to HL at the molecular level. Results indicated that the contents of anthocyanins, especially glucosides of cyanidin, delphinidin, and petunidin, which were determined by liquid chromatography-mass spectrometry (LC-MS), increased by 9.6-, 4.2-, and 59.7-fold in rapeseed seedlings exposed to HL conditions, respectively. Next, RNA-sequencing analysis identified 7390 differentially expressed genes (DEGs), which included 4393 up-regulated and 2997 down-regulated genes. Among the up-regulated genes, many genes related to the anthocyanin-biosynthetic pathway were enriched. For example, genes encoding dihydroflavonol reductase (BnDFR) and anthocyanin synthase (BnANS) were especially induced by HL conditions, which was also confirmed by RT-qPCR analysis. In addition, two PRODUCTION OF ANTHOCYANIN PIGMENTATION 2 (BnPAP2) and GLABRA3 (BnGL3) genes encoding MYB-type and bHLH-type transcription factors, respectively, whose expression was also up-regulated by HL stress, were found to be associated with the changes in anthocyanin biosynthesis. Many genes involved in the jasmonic acid (JA)-biosynthetic pathway were also up-regulated under HL conditions. This finding, which is in agreement with the well-known positive regulatory role of JA in anthocyanin biosynthesis, suggests that the JA may also play a key role in the responses of rapeseed seedlings to HL. Collectively, these data indicate that anthocyanin biosynthesis-related and JA biosynthesis-related pathways mediate HL responses in rapeseed. These findings collectively provide mechanistic insights into the mechanisms involved in the response of rapeseed to HL stress, and the identified key genes may potentially be used to improve HL tolerance of rapeseed cultivars through genetic engineering or breeding strategies.
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Affiliation(s)
- Yuxiu Luo
- College of Eco-Environmental Engineering, Qinghai University, Xining 810016, China; (Y.L.); (S.T.); (X.T.)
| | - Shoulian Teng
- College of Eco-Environmental Engineering, Qinghai University, Xining 810016, China; (Y.L.); (S.T.); (X.T.)
| | - Hengxia Yin
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
- Correspondence: (H.Y.); or (L.-S.P.T.); Tel.: +86-971-531-0086 (H.Y.)
| | - Shengping Zhang
- Qinghai Academy of Agriculture and Forestry, Qinghai University, Xining 810016, China;
| | - Xiaoyun Tuo
- College of Eco-Environmental Engineering, Qinghai University, Xining 810016, China; (Y.L.); (S.T.); (X.T.)
| | - Lam-Son Phan Tran
- Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang 550000, Vietnam
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX 79409, USA
- Correspondence: (H.Y.); or (L.-S.P.T.); Tel.: +86-971-531-0086 (H.Y.)
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Liu Q, Zhao X, Liu Y, Xie S, Xing Y, Dao J, Wei B, Peng Y, Duan W, Wang Z. Response of Sugarcane Rhizosphere Bacterial Community to Drought Stress. Front Microbiol 2021; 12:716196. [PMID: 34690961 PMCID: PMC8527094 DOI: 10.3389/fmicb.2021.716196] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 09/13/2021] [Indexed: 12/02/2022] Open
Abstract
Sugarcane is an important sugar and energy crop, and its yield is greatly affected by drought. Although a large number of studies have shown that rhizosphere microorganisms can help improve the adaptability of plants to biotic or abiotic stresses, there is a lack of studies on the adaptability of sugarcane rhizosphere microbial communities to host plants. Therefore, we conducted drought stress treatment and normal irrigation treatment on three sugarcane varieties GT21, GT31, and GT42 widely cultivated in Guangxi. Using 16S rDNA sequencing technology to analyze the changes in abundance of the sugarcane rhizosphere bacterial community under different treatments, combined with the determination of soil enzyme activity, soil nutrient content, and sugarcane physiological characteristics, we explored the sugarcane rhizosphere bacterial community response to drought stress. In addition, we used the structural equation model to verify the response path of sugarcane rhizosphere bacteria. The results show that the bacterial community structure in the rhizosphere of sugarcane is stable under normal water conditions. The change in the bacterial community structure under drought stress has a 25.2% correlation with the drought adaptability of sugarcane, but the correlation with drought stress is as high as 42.17%. The changes in abundance of rhizosphere bacteria under drought stress are mainly concentrated in the phylum Rhizobiales and Streptomycetales. This change is directly related to the physiological state of the host plant under drought stress, soil available phosphorus, soil urease and soil acid protease. We investigated the response species of rhizosphere microorganisms and their response pathways under drought stress, providing a scientific basis for rhizosphere microorganisms to assist host plants to improve drought adaptability.
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Affiliation(s)
- Qi Liu
- Guangxi Key Laboratory of Sugarcane Biology, Nanning, China.,College of Agronomy, Guangxi University, Nanning, China.,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, China
| | - Xiaowen Zhao
- Guangxi Key Laboratory of Sugarcane Biology, Nanning, China.,College of Agronomy, Guangxi University, Nanning, China.,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, China
| | - Yue Liu
- Guangxi Key Laboratory of Sugarcane Biology, Nanning, China.,College of Agronomy, Guangxi University, Nanning, China.,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, China
| | - Sasa Xie
- Guangxi Key Laboratory of Sugarcane Biology, Nanning, China.,College of Agronomy, Guangxi University, Nanning, China.,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, China
| | - Yuanjun Xing
- College of Agriculture, Guangxi University, Nanning, China
| | - Jicao Dao
- College of Agriculture, Guangxi University, Nanning, China
| | - Beilei Wei
- College of Agriculture, Guangxi University, Nanning, China
| | - Yunchang Peng
- College of Agriculture, Guangxi University, Nanning, China
| | - Weixing Duan
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Ziting Wang
- Guangxi Key Laboratory of Sugarcane Biology, Nanning, China.,College of Agronomy, Guangxi University, Nanning, China.,State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi University, Nanning, China
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Zhao G, Cheng P, Zhang T, Abdalmegeed D, Xu S, Shen W. Hydrogen-rich water prepared by ammonia borane can enhance rapeseed (Brassica napus L.) seedlings tolerance against salinity, drought or cadmium. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 224:112640. [PMID: 34392154 DOI: 10.1016/j.ecoenv.2021.112640] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/10/2021] [Accepted: 08/11/2021] [Indexed: 05/04/2023]
Abstract
Hydrogen agriculture is recently recognized as an emerging and promising approach for low-carbon society. Since shorter retention time for hydrogen gas (H2) in conventional electrolytically produced hydrogen-rich water (HRW) limits its application, seeking a more suitable method to produce and maintain H2 level in HRW for longer time remain a challenge for scientific community. To solve above problems, we compared and concluded that the H2 in HRW prepared by ammonia borane (NH3·BH3) could meet above requirement. The biological effects of HRW prepared by NH3·BH3 were further evaluated in seedlings of rapeseed, the most important crop for producing vegetable oil worldwide. Under our experimental conditions, 2 mg/L NH3·BH3-prepared HRW could confer 3-day-old hydroponic seedlings tolerance against 150 mM sodium chloride (NaCl), 20% polyethylene glycol (PEG; w/v), or 100 μM CdCl2 stress, and intensify endogenous nitric oxide (NO) accumulation under above stresses. The alleviation of seedlings growth stunt was confirmed by reducing cell death and reestablishing redox homeostasis. Reconstructing ion homeostasis, increasing proline content, and reducing Cd accumulation were accordingly observed. Above responses were sensitive to the removal of endogenous NO with its scavenger 2-(4-carboxyphenyl)-4,4,5,5-tetramethyl-imidazoline-1-1-oxyl-3-oxide (cPTIO; 100 μM), reflecting the requirement of NO functioning in the regulation of plant physiology achieved by NH3·BH3-prepared HRW. The application of 1 mM tungstate, an inhibitor of nitrate reductase (NR; an important NO synthetic enzyme), showed the similar blocking responses in the phenotype, suggesting that NR might be the major source of NO involved in above H2 actions. Together, these results revealed that HRW prepared by NH3·BH3 could enhance rapeseed seedlings tolerance against abiotic stress, thus opening a new window for the application of H2 in agricultural production.
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Affiliation(s)
- Gan Zhao
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Pengfei Cheng
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Tong Zhang
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Dyaaaldin Abdalmegeed
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Sheng Xu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China
| | - Wenbiao Shen
- College of Life Sciences, Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China; Center of Hydrogen Science, Shanghai Jiao Tong University, Shanghai 200240, China.
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Wang L, Wang R, Lei W, Wu J, Li C, Shi H, Meng L, Yuan F, Zhou Q, Cui C. Transcriptome analysis reveals gene responses to herbicide, tribenuron methyl, in Brassica napus L. during seed germination. BMC Genomics 2021; 22:299. [PMID: 33892633 PMCID: PMC8067372 DOI: 10.1186/s12864-021-07614-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 04/14/2021] [Indexed: 11/25/2022] Open
Abstract
Background Tribenuron methyl (TBM) is an herbicide that inhibits sulfonylurea acetolactate synthase (ALS) and is one of the most widely used broad-leaved herbicides for crop production. However, soil residues or drifting of the herbicide spray might affect the germination and growth of rapeseed, Brassica napus, so it is imperative to understand the response mechanism of rape to TBM during germination. The aim of this study was to use transcriptome analysis to reveal the gene responses in herbicide-tolerant rapeseed to TBM stress during seed germination. Results 2414, 2286, and 1068 differentially expressed genes (DEGs) were identified in TBM-treated resistant vs sensitive lines, treated vs. control sensitive lines, treated vs. control resistant lines, respectively. GO analysis showed that most DEGs were annotated to the oxidation-reduction pathways and catalytic activity. KEGG enrichment was mainly involved in plant-pathogen interactions, α-linolenic acid metabolism, glucosinolate biosynthesis, and phenylpropanoid biosynthesis. Based on GO and KEGG enrichment, a total of 137 target genes were identified, including genes involved in biotransferase activity, response to antioxidant stress and lipid metabolism. Biotransferase genes, CYP450, ABC and GST, detoxify herbicide molecules through physical or biochemical processes. Antioxidant genes, RBOH, WRKY, CDPK, MAPK, CAT, and POD regulate plant tolerance by transmitting ROS signals and triggering antioxidant enzyme expression. Lipid-related genes and hormone-related genes were also found, such as LOX3, ADH1, JAZ6, BIN2 and ERF, and they also played an important role in herbicide resistance. Conclusions This study provides insights for selecting TBM-tolerant rapeseed germplasm and exploring the molecular mechanism of TBM tolerance during germination. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07614-1.
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Affiliation(s)
- Liuyan Wang
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China
| | - Ruili Wang
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China
| | - Wei Lei
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China
| | - Jiayi Wu
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China
| | - Chenyang Li
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China
| | - Hongsong Shi
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China
| | - Lijiao Meng
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China
| | - Fang Yuan
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China
| | - Qingyuan Zhou
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China.
| | - Cui Cui
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400716, China.
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Tong J, Walk TC, Han P, Chen L, Shen X, Li Y, Gu C, Xie L, Hu X, Liao X, Qin L. Genome-wide identification and analysis of high-affinity nitrate transporter 2 (NRT2) family genes in rapeseed (Brassica napus L.) and their responses to various stresses. BMC PLANT BIOLOGY 2020; 20:464. [PMID: 33036562 PMCID: PMC7547492 DOI: 10.1186/s12870-020-02648-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 09/14/2020] [Indexed: 05/22/2023]
Abstract
BACKGROUND High-affinity nitrate transporter 2 (NRT2) genes have been implicated in nitrate absorption and remobilization under nitrogen (N) starvation stress in many plant species, yet little is known about this gene family respond to various stresses often occurs in the production of rapeseed (Brassica napus L.). RESULTS This report details identification of 17 NRT2 gene family members in rapeseed, as well as, assessment of their expression profiles using RNA-seq analysis and qRT-PCR assays. In this study, all BnNRT2.1 members, BnNRT2.2a and BnNRT2.4a were specifically expressed in root tissues, while BnNRT2.7a and BnNRT2.7b were mainly expressed in aerial parts, including as the predominantly expressed NRT2 genes detected in seeds. This pattern of shoot NRT expression, along with homology to an Arabidopsis NRT expressed in seeds, strongly suggests that both BnNRT2.7 genes play roles in seed nitrate accumulation. Another rapeseed NRT, BnNRT2.5 s, exhibited intermediate expression, with transcripts detected in both shoot and root tissues. Functionality of BnNRT2s genes was further outlined by testing for adaptive responses in expression to exposure to a series of environmental stresses, including N, phosphorus (P) or potassium (K) deficiency, waterlogging and drought. In these tests, most NRT2 gene members were up-regulated by N starvation and restricted by the other stresses tested herein. In contrast to this overall trend, transcription of BnNRT2.1a was up-regulated under waterlogging and K deficiency stress, and BnNRT2.5 s was up-regulated in roots subjected to waterlogging. Furthermore, the mRNA levels of BnNRT2.7 s were enhanced under both waterlogging stress and P or K deficiency conditions. These results suggest that these three BnNRT2 genes might participate in crosstalk among different stress response pathways. CONCLUSIONS The results presented here outline a diverse set of NRT2 genes present in the rapeseed genome that collectively carry out specific functions throughout rapeseed development, while also responding not just to N deficiency, but also to several other stresses. Targeting of individual BnNRT2 members that coordinate rapeseed nitrate uptake and transport in response to cues from multiple stress response pathways could significantly expand the genetic resources available for improving rapeseed resistance to environmental stresses.
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Affiliation(s)
- Jiafeng Tong
- Oil Crops Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetics Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Wuhan, 430062, P. R. China
| | | | - Peipei Han
- Oil Crops Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetics Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Wuhan, 430062, P. R. China
- Institute of Agriculture Science in Jiangsu Coastal Area, Yancheng, 224002, P. R. China
| | - Liyu Chen
- Innovative Center of Molecular Genetics and Evolution, School of Life Sciences, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Xinjie Shen
- Oil Crops Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetics Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Wuhan, 430062, P. R. China
| | - Yinshui Li
- Oil Crops Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetics Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Wuhan, 430062, P. R. China
| | - Chiming Gu
- Oil Crops Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetics Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Wuhan, 430062, P. R. China
| | - Lihua Xie
- Oil Crops Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetics Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Wuhan, 430062, P. R. China
| | - Xiaojia Hu
- Oil Crops Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetics Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Wuhan, 430062, P. R. China
| | - Xing Liao
- Oil Crops Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetics Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Wuhan, 430062, P. R. China.
| | - Lu Qin
- Oil Crops Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetics Improvement of Oil Crops of the Ministry of Agriculture and Rural Affairs, Wuhan, 430062, P. R. China.
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Trichoderma parareesei Favors the Tolerance of Rapeseed (Brassica napus L.) to Salinity and Drought Due to a Chorismate Mutase. AGRONOMY-BASEL 2020. [DOI: 10.3390/agronomy10010118] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Both drought and salinity represent the greatest plant abiotic stresses in crops. Increasing plant tolerance against these environmental conditions must be a key strategy in the development of future agriculture. The genus of Trichoderma filament fungi includes several species widely used as biocontrol agents for plant diseases but also some with the ability to increase plant tolerance against abiotic stresses. In this sense, using the species T. parareesei and T. harzianum, we have verified the differences between the two after their application in rapeseed (Brassica napus) root inoculation, with T. parareesei being a more efficient alternative to increase rapeseed productivity under drought or salinity conditions. In addition, we have determined the role that T. parareesei chorismate mutase plays in its ability to promote tolerance to salinity and drought in plants by increasing the expression of genes related to the hormonal pathways of abscisic acid (ABA) under drought stress, and ethylene (ET) under salt stress.
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