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Shen B, Li W, Zheng Y, Zhou X, Zhang Y, Qu M, Wang Y, Yuan Y, Pang K, Feng Y, Wu J, Zeng B. Morphological and molecular response mechanisms of the root system of different Hemarthria compressa species to submergence stress. Front Plant Sci 2024; 15:1342814. [PMID: 38638357 PMCID: PMC11024365 DOI: 10.3389/fpls.2024.1342814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 03/21/2024] [Indexed: 04/20/2024]
Abstract
Introduction The severity of flood disasters is increasing due to climate change, resulting in a significant reduction in the yield and quality of forage crops worldwide. This poses a serious threat to the development of agriculture and livestock. Hemarthria compressa is an important high-quality forage grass in southern China. In recent years, frequent flooding has caused varying degrees of impacts on H. compressa and their ecological environment. Methods In this study, we evaluated differences in flooding tolerance between the root systems of the experimental materials GY (Guang Yi, flood-tolerant) and N1291 (N201801291, flood-sensitive). We measured their morphological indexes after 7 d, 14 d, and 21 d of submergence stress and sequenced their transcriptomes at 8 h and 24 h, with 0 h as the control. Results During submergence stress, the number of adventitious roots and root length of both GY and N1291 tended to increase, but the overall growth of GY was significantly higher than that of N1291. RNA-seq analysis revealed that 6046 and 7493 DEGs were identified in GY-8h and GY-24h, respectively, and 9198 and 4236 DEGs in N1291-8h and N1291-24h, respectively, compared with the control. The GO and KEGG enrichment analysis results indicated the GO terms mainly enriched among the DEGs were oxidation-reduction process, obsolete peroxidase reaction, and other antioxidant-related terms. The KEGG pathways that were most significantly enriched were phenylpropanoid biosynthesis, plant hormone signal transduction etc. The genes of transcription factor families, such as C2H2, bHLH and bZIP, were highly expressed in the H. compressa after submergence, which might be closely related to the submergence adaptive response mechanisms of H. compressa. Discussion This study provides basic data for analyzing the molecular and morphological mechanisms of H. compressa in response to submergence stress, and also provides theoretical support for the subsequent improvement of submergence tolerance traits of H. compressa.
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Affiliation(s)
- Bingna Shen
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Wenwen Li
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Yuqian Zheng
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Xiaoli Zhou
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Yinuo Zhang
- College of Grassland Agriculture, Northwest Agriculture and Forestry University, Shanxi, China
| | - Minghao Qu
- College of Animal Science and Technology, Southwest University, Chongqing, China
- Institute of Prataculture, Chongqing Academy of Animal Science, Chongqing, China
| | - Yinchen Wang
- Institute of Animal Husbandry and Veterinary Medicine, Guizhou Provincial Academy of Agricultural Sciences, Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou, China
| | - Yang Yuan
- Institute of Animal Husbandry and Veterinary Medicine, Guizhou Provincial Academy of Agricultural Sciences, Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou, China
| | - Kaiyue Pang
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Yanlong Feng
- College of Animal Science and Technology, Southwest University, Chongqing, China
| | - Jiahai Wu
- Institute of Animal Husbandry and Veterinary Medicine, Guizhou Provincial Academy of Agricultural Sciences, Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou, China
| | - Bing Zeng
- College of Animal Science and Technology, Southwest University, Chongqing, China
- College of Animal Science and Technology, Southwest University, Chongqing University Herbivore Engineering Research Center, Chongqing, China
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Lin Y, Zhang A, Yang S, Huang L. Reference gene selection for real-time quantitative PCR normalization in Hemarthria compressa and Hemarthria altissima leaf tissue. Mol Biol Rep 2019; 46:4763-9. [PMID: 31228043 DOI: 10.1007/s11033-019-04922-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 06/14/2019] [Indexed: 10/26/2022]
Abstract
Hemarthria compressa and Hemarthria altissima are widely used as livestock forage and play important roles in tropical and subtropical grassland agricultural systems promoting healthy ecological environment and the development of animal husbandry. Leaf tissue of "Yaan" limpograss (H. compressa) and "H255" whip grass (H. altissima) were used to test the mRNA expression levels of 12 reference genes using RT-qPCR. The Delta-Ct method, BestKeeper (ver. 1.0), Genorm (ver. 3.5), Normfinder (ver. 0.953) and RefFinder were used to analyze the expression stability of the 12 reference genes under drought, salt, acid-aluminum and cold stresses to provide significant technical support for the study of gene expression under various abiotic stresses in Hemarthria. The results showed that the candidate reference genes showed divergent expression levels under various abiotic stresses. Among the genes that were selected, CL18892 showed the highest expression stability under salt stress in the leaf tissue. eEF-1α was the most stable gene under cold and acid-aluminum stresses and CL16384 was comparatively the most suitable genes under drought stress. As a whole, according to RefFinder analysis, CYP5, BMK.74327 and CL21527 were the most suitable reference genes for studying the effects of abiotic stress in Hemarthria. In general, CL16812 and CL18038 were not suitable reference genes under abiotic stress conditions that were examined in this study.
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Chen Y, Huang L, Yan H, Zhang X, Xu B, Ma X. Cloning and characterization of an ABA-independent DREB transcription factor gene, HcDREB2, in Hemarthria compressa. Hereditas 2016; 153:3. [PMID: 28096765 PMCID: PMC5224587 DOI: 10.1186/s41065-016-0008-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 04/01/2016] [Indexed: 11/28/2022] Open
Abstract
Background Hemarthria compressa is a stoloniferous perennial tropical forage grass with a wide geographic distribution; however, environmental stress has a great influence on its growth. The DREB transcription factor family genes contains candidate genes for improving plant stress tolerance. Results From cold-treated H. compressa plants, a putative DREB2 gene (HcDREB2) was cloned using the RACE-PCR method. HcDREB2 was 1296 bp in length and encoded a putative protein 264 amino acid residues long. HcDREB2 shared the highest sequence identity with DREB2 in sorghum. The expression of HcDREB2 was independent of ABA treatment, but inducible by low temperatures as well as drought and high salinity treatments. Yeast one-hybrid assays showed that HcDREB2 directly bound the DRE cis-acting element to transactivate the expression of the downstream reporter genes. Conclusions HcDREB2, a stress-inducible but ABA-independent transcription factor gene, can transactivate downstream genes by binding to the DRE cis-element. The current results are a foundation for making use of this stress tolerance gene in future H. compressa studies. Electronic supplementary material The online version of this article (doi:10.1186/s41065-016-0008-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yongxia Chen
- Animal Science Department, Xichang college, Xichang, 615000 China.,Grassland Science Department, Sichuan Agricultural University, Ya'an, 625014 China
| | - Linkai Huang
- Grassland Science Department, Sichuan Agricultural University, Ya'an, 625014 China
| | - Haidong Yan
- Grassland Science Department, Sichuan Agricultural University, Ya'an, 625014 China
| | - Xinquan Zhang
- Grassland Science Department, Sichuan Agricultural University, Ya'an, 625014 China
| | - Bin Xu
- College of Agro-grassland Science, Nanjing Agricultural University, Nanjing, 210095 China
| | - Xiao Ma
- Grassland Science Department, Sichuan Agricultural University, Ya'an, 625014 China
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