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| DOI | 10.3389/fpls.2024.1342814 |
| Morphological and molecular response mechanisms of the root system of different Hemarthria compressa species to submergence stress | |
| 发表日期 | 2024 |
| ISSN | 1664-462X |
| 起始页码 | 15 |
| 卷号 | 15 |
| 英文摘要 | 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. |
| 英文关键词 | Hemarthria compressa; phenylpropanoid biosynthesis; plant hormone signal transduction; molecular mechanisms; transcription factors |
| 语种 | 英语 |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| WOS记录号 | WOS:001204743000001 |
| 来源期刊 | FRONTIERS IN PLANT SCIENCE
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/304904 |
| 作者单位 | Southwest University - China; Northwest A&F University - China; Chongqing Academy of Animal Sciences; Guizhou Academy of Agricultural Sciences; Chongqing University; Southwest University - China |
| 推荐引用方式 GB/T 7714 | . Morphological and molecular response mechanisms of the root system of different Hemarthria compressa species to submergence stress[J],2024,15. |
| APA | (2024).Morphological and molecular response mechanisms of the root system of different Hemarthria compressa species to submergence stress.FRONTIERS IN PLANT SCIENCE,15. |
| MLA | "Morphological and molecular response mechanisms of the root system of different Hemarthria compressa species to submergence stress".FRONTIERS IN PLANT SCIENCE 15(2024). |
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