Reduction of indole-3-acetic acid methyltransferase activity compensates for high-temperature male sterility in Arabidopsis
High temperature is a general stress factor that causes a decrease in crop yield. It has been shown that auxin application reduces the male sterility caused by exposure to higher temperatures. However, widespread application of a hormone with vast effects on plant physiology may be discouraged in ma...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018
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| Online Access: | https://eprints.nottingham.ac.uk/50025/ |
| _version_ | 1848798132355203072 |
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| author | Abbas, Mohamad Hernández-García, Jorge Blanco-Tourin, Noel Aliaga, Norma Minguet, Eugenio G. Alabadí, David Blázquez, Miguel A. |
| author_facet | Abbas, Mohamad Hernández-García, Jorge Blanco-Tourin, Noel Aliaga, Norma Minguet, Eugenio G. Alabadí, David Blázquez, Miguel A. |
| author_sort | Abbas, Mohamad |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | High temperature is a general stress factor that causes a decrease in crop yield. It has been shown that auxin application reduces the male sterility caused by exposure to higher temperatures. However, widespread application of a hormone with vast effects on plant physiology may be discouraged in many cases. Therfore, the generation of new plant varieties that locally enhance auxin in reproductive organs may represent an alternative strategy. We have explored the possibility of increasing indoleacetic acid (IAA) in ovaries by reducing IAA METHYLTRANSFERASE1 (IAMT1) activity in Arabidopsis thaliana. The iamt1 mutant showed increased auxin signaling in funiculi, which correlated with a higher growth rate of wild-type pollen in contact with mutant ovaries and premature ovule fertilization. While the production of seeds per fruit was similar in the wild type and the mutant at 20°C, exposure to 29°C caused a more severe decrease in fertility in the wild type than in the mutant. Loss of IAMT1 activity was also associated with to the production of more nodes after flowering and higher tolerance of the shoot apical meristem to higher temperatures. As a consequence, the productivity of the iamt1 mutant under higher temperatures was more than double of that of the wild type, with almost no apparent trade-off. |
| first_indexed | 2025-11-14T20:14:54Z |
| format | Article |
| id | nottingham-50025 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:14:54Z |
| publishDate | 2018 |
| publisher | Wiley |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-500252018-02-26T15:17:55Z https://eprints.nottingham.ac.uk/50025/ Reduction of indole-3-acetic acid methyltransferase activity compensates for high-temperature male sterility in Arabidopsis Abbas, Mohamad Hernández-García, Jorge Blanco-Tourin, Noel Aliaga, Norma Minguet, Eugenio G. Alabadí, David Blázquez, Miguel A. High temperature is a general stress factor that causes a decrease in crop yield. It has been shown that auxin application reduces the male sterility caused by exposure to higher temperatures. However, widespread application of a hormone with vast effects on plant physiology may be discouraged in many cases. Therfore, the generation of new plant varieties that locally enhance auxin in reproductive organs may represent an alternative strategy. We have explored the possibility of increasing indoleacetic acid (IAA) in ovaries by reducing IAA METHYLTRANSFERASE1 (IAMT1) activity in Arabidopsis thaliana. The iamt1 mutant showed increased auxin signaling in funiculi, which correlated with a higher growth rate of wild-type pollen in contact with mutant ovaries and premature ovule fertilization. While the production of seeds per fruit was similar in the wild type and the mutant at 20°C, exposure to 29°C caused a more severe decrease in fertility in the wild type than in the mutant. Loss of IAMT1 activity was also associated with to the production of more nodes after flowering and higher tolerance of the shoot apical meristem to higher temperatures. As a consequence, the productivity of the iamt1 mutant under higher temperatures was more than double of that of the wild type, with almost no apparent trade-off. Wiley 2018-01-25 Article PeerReviewed application/pdf en cc_by https://eprints.nottingham.ac.uk/50025/8/Abbas_et_al-2018-Plant_Biotechnology_Journal.pdf Abbas, Mohamad, Hernández-García, Jorge, Blanco-Tourin, Noel, Aliaga, Norma, Minguet, Eugenio G., Alabadí, David and Blázquez, Miguel A. (2018) Reduction of indole-3-acetic acid methyltransferase activity compensates for high-temperature male sterility in Arabidopsis. Plant Biotechnology Journal, 16 (1). pp. 272-279. ISSN 1467-7652 http://onlinelibrary.wiley.com/doi/10.1111/pbi.12768/abstract;jsessionid=8F973FBE5D601BD4FBA28DD9E3FA1D16.f01t03 doi:10.1111/pbi.12768 doi:10.1111/pbi.12768 |
| spellingShingle | Abbas, Mohamad Hernández-García, Jorge Blanco-Tourin, Noel Aliaga, Norma Minguet, Eugenio G. Alabadí, David Blázquez, Miguel A. Reduction of indole-3-acetic acid methyltransferase activity compensates for high-temperature male sterility in Arabidopsis |
| title | Reduction of indole-3-acetic acid methyltransferase activity compensates for high-temperature male sterility in Arabidopsis |
| title_full | Reduction of indole-3-acetic acid methyltransferase activity compensates for high-temperature male sterility in Arabidopsis |
| title_fullStr | Reduction of indole-3-acetic acid methyltransferase activity compensates for high-temperature male sterility in Arabidopsis |
| title_full_unstemmed | Reduction of indole-3-acetic acid methyltransferase activity compensates for high-temperature male sterility in Arabidopsis |
| title_short | Reduction of indole-3-acetic acid methyltransferase activity compensates for high-temperature male sterility in Arabidopsis |
| title_sort | reduction of indole-3-acetic acid methyltransferase activity compensates for high-temperature male sterility in arabidopsis |
| url | https://eprints.nottingham.ac.uk/50025/ https://eprints.nottingham.ac.uk/50025/ https://eprints.nottingham.ac.uk/50025/ |