Differential involvement of MYB13 and MYB15 transcription factors in isoflavonoid biosynthesis and tolerance to salt stress in Lotus japonicus
Understanding the mechanisms involved in the response to abiotic stress is essential to enhance plant stress resilience and ensure sustainable agriculture. In this study we report different roles for two closely related MYB transcription factors (TFs), MYB13 and MYB15, in the legume model Lotus japo...
| Authors: | ; ; ; ; |
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| Format: | Article |
| Status: | Published version |
| Publication date: | 2025 |
| Country: | España |
| Institution: | Universidad de Sevilla (US) |
| Repository: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/176198 |
| Online Access: | https://hdl.handle.net/11441/176198 https://doi.org/10.1016/j.stress.2025.100913 |
| Access Level: | Open access |
| Keyword: | Abiotic stress UV-B irradiation and salt Isoflavonoids Transcription factors Lotus japonicus |
| _version_ | 1878737845758197760 |
|---|---|
| author | Monje Rueda, María Dolores |
| author2 | Pal'ove-Balang, Peter Márquez Cabeza, Antonio José Betti, Marco García Calderón, Margarita |
| author2_role | author author author author |
| author_browse | Betti, Marco García Calderón, Margarita Monje Rueda, María Dolores Márquez Cabeza, Antonio José Pal'ove-Balang, Peter |
| author_facet | Monje Rueda, María Dolores Pal'ove-Balang, Peter Márquez Cabeza, Antonio José Betti, Marco García Calderón, Margarita |
| author_role | author |
| collection | idUS. Depósito de Investigación de la Universidad de Sevilla |
| description | Understanding the mechanisms involved in the response to abiotic stress is essential to enhance plant stress resilience and ensure sustainable agriculture. In this study we report different roles for two closely related MYB transcription factors (TFs), MYB13 and MYB15, in the legume model Lotus japonicus. Different growth and biochemical parameters were determined for mutant lines impaired in these TFs under either control conditions or under two different types of abiotic stress: salinity and UV-B irradiation. Our findings show that MYB15 positively regulates isoflavonoid biosynthesis under UV-B irradiation but does not affect salt tolerance. In contrast, MYB13 does not appear to be involved in the UV-B response but plays a significant role in salt stress tolerance, as specific mutants lacking MYB13 exhibited increased NaCl resistance. Further analysis revealed that salt tolerance in Ljmyb13 mutants is associated with changes in vestitol and chloride ion (Cl-) levels, as well as modifications in root architecture. Moreover, the growth of both mutants was enhanced in the absence of abiotic stress, but only under non-symbiotic conditions. These findings highlight the differential roles of MYB13 and MYB15 in regulating stress responses and provide insights into potential mechanisms of salt stress adaptation in L. japonicus. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_a5cfcc01d783b4e57a7e37333b25ea25 |
| institution | Universidad de Sevilla (US) |
| instname_str | Universidad de Sevilla (US) |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:idus.us.es:11441/176198 |
| publishDate | 2025 |
| publishDateSort | 2025 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| reponame_str | idUS. Depósito de Investigación de la Universidad de Sevilla |
| spelling | Differential involvement of MYB13 and MYB15 transcription factors in isoflavonoid biosynthesis and tolerance to salt stress in Lotus japonicus Monje Rueda, María Dolores Pal'ove-Balang, Peter Márquez Cabeza, Antonio José Betti, Marco García Calderón, Margarita Abiotic stress UV-B irradiation and salt Isoflavonoids Transcription factors Lotus japonicus Understanding the mechanisms involved in the response to abiotic stress is essential to enhance plant stress resilience and ensure sustainable agriculture. In this study we report different roles for two closely related MYB transcription factors (TFs), MYB13 and MYB15, in the legume model Lotus japonicus. Different growth and biochemical parameters were determined for mutant lines impaired in these TFs under either control conditions or under two different types of abiotic stress: salinity and UV-B irradiation. Our findings show that MYB15 positively regulates isoflavonoid biosynthesis under UV-B irradiation but does not affect salt tolerance. In contrast, MYB13 does not appear to be involved in the UV-B response but plays a significant role in salt stress tolerance, as specific mutants lacking MYB13 exhibited increased NaCl resistance. Further analysis revealed that salt tolerance in Ljmyb13 mutants is associated with changes in vestitol and chloride ion (Cl-) levels, as well as modifications in root architecture. Moreover, the growth of both mutants was enhanced in the absence of abiotic stress, but only under non-symbiotic conditions. These findings highlight the differential roles of MYB13 and MYB15 in regulating stress responses and provide insights into potential mechanisms of salt stress adaptation in L. japonicus. Elsevier https://hdl.handle.net/11441/176198 https://doi.org/10.1016/j.stress.2025.100913 |
| spellingShingle | Differential involvement of MYB13 and MYB15 transcription factors in isoflavonoid biosynthesis and tolerance to salt stress in Lotus japonicus Monje Rueda, María Dolores Abiotic stress UV-B irradiation and salt Isoflavonoids Transcription factors Lotus japonicus |
| status_str | publishedVersion |
| title | Differential involvement of MYB13 and MYB15 transcription factors in isoflavonoid biosynthesis and tolerance to salt stress in Lotus japonicus |
| title_full | Differential involvement of MYB13 and MYB15 transcription factors in isoflavonoid biosynthesis and tolerance to salt stress in Lotus japonicus |
| title_fullStr | Differential involvement of MYB13 and MYB15 transcription factors in isoflavonoid biosynthesis and tolerance to salt stress in Lotus japonicus |
| title_full_unstemmed | Differential involvement of MYB13 and MYB15 transcription factors in isoflavonoid biosynthesis and tolerance to salt stress in Lotus japonicus |
| title_short | Differential involvement of MYB13 and MYB15 transcription factors in isoflavonoid biosynthesis and tolerance to salt stress in Lotus japonicus |
| title_sort | Differential involvement of MYB13 and MYB15 transcription factors in isoflavonoid biosynthesis and tolerance to salt stress in Lotus japonicus |
| topic | Abiotic stress UV-B irradiation and salt Isoflavonoids Transcription factors Lotus japonicus |
| topic_facet | Abiotic stress UV-B irradiation and salt Isoflavonoids Transcription factors Lotus japonicus |
| url | https://hdl.handle.net/11441/176198 https://doi.org/10.1016/j.stress.2025.100913 |