Tomato flower abnormalities induced by low temperatures are associated with changes of expression of MADS-box genes
Flower and fruit development in tomato (Lycopersicon esculentum Mill.) were severely affected when plants were grown at low temperatures, displaying homeotic and meristic transformations and alterations in the fusion pattern of the organs. Most of these homeotic transformations modified the identity of stamens and carpels, giving rise to intermediate organs. Complete homeotic transformations were rarely found and always affected organs of the reproductive whorls. Meristic transformations were also commonly observed in the reproductive whorls, which developed with an excessive number of organs. Scanning electron microscopy revealed that meristic transformations take place very early in the development of the flower and are related to a significant increase in the floral meristem size. However, homeotic transformations should occur later during the development of the organ primordia. Steady-state levels of transcripts corresponding to tomato MADS-box genes TM4, TM5, TM6, and TAG1 were greatly increased by low temperatures and could be related to these flower abnormalities. Moreover, in situ hybridization analyses showed that low temperatures also altered the stage-specific expression of TM4.
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Oxford University Press
1998
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Online Access: | http://hdl.handle.net/20.500.12792/2526 http://hdl.handle.net/10261/293371 |
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dig-inia-es-10261-2933712023-02-20T10:27:51Z Tomato flower abnormalities induced by low temperatures are associated with changes of expression of MADS-box genes Lozano, R. Angosto, T. Gómez, P. Payán, C. Capel, J. Huijser, P. Salinas, J. Martínez-Zapater, J. M. Flower and fruit development in tomato (Lycopersicon esculentum Mill.) were severely affected when plants were grown at low temperatures, displaying homeotic and meristic transformations and alterations in the fusion pattern of the organs. Most of these homeotic transformations modified the identity of stamens and carpels, giving rise to intermediate organs. Complete homeotic transformations were rarely found and always affected organs of the reproductive whorls. Meristic transformations were also commonly observed in the reproductive whorls, which developed with an excessive number of organs. Scanning electron microscopy revealed that meristic transformations take place very early in the development of the flower and are related to a significant increase in the floral meristem size. However, homeotic transformations should occur later during the development of the organ primordia. Steady-state levels of transcripts corresponding to tomato MADS-box genes TM4, TM5, TM6, and TAG1 were greatly increased by low temperatures and could be related to these flower abnormalities. Moreover, in situ hybridization analyses showed that low temperatures also altered the stage-specific expression of TM4. 2023-02-20T10:27:51Z 2023-02-20T10:27:51Z 1998 journal article Plant Physiology 117(1): 91-100 (1998) 0032-0889 http://hdl.handle.net/20.500.12792/2526 http://hdl.handle.net/10261/293371 10.1104/pp.117.1.91 1532-2548 en none Oxford University Press |
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Flower and fruit development in tomato (Lycopersicon esculentum Mill.) were severely affected when plants were grown at low temperatures, displaying homeotic and meristic transformations and alterations in the fusion pattern of the organs. Most of these homeotic transformations modified the identity of stamens and carpels, giving rise to intermediate organs. Complete homeotic transformations were rarely found and always affected organs of the reproductive whorls. Meristic transformations were also commonly observed in the reproductive whorls, which developed with an excessive number of organs. Scanning electron microscopy revealed that meristic transformations take place very early in the development of the flower and are related to a significant increase in the floral meristem size. However, homeotic transformations should occur later during the development of the organ primordia. Steady-state levels of transcripts corresponding to tomato MADS-box genes TM4, TM5, TM6, and TAG1 were greatly increased by low temperatures and could be related to these flower abnormalities. Moreover, in situ hybridization analyses showed that low temperatures also altered the stage-specific expression of TM4. |
format |
journal article |
author |
Lozano, R. Angosto, T. Gómez, P. Payán, C. Capel, J. Huijser, P. Salinas, J. Martínez-Zapater, J. M. |
spellingShingle |
Lozano, R. Angosto, T. Gómez, P. Payán, C. Capel, J. Huijser, P. Salinas, J. Martínez-Zapater, J. M. Tomato flower abnormalities induced by low temperatures are associated with changes of expression of MADS-box genes |
author_facet |
Lozano, R. Angosto, T. Gómez, P. Payán, C. Capel, J. Huijser, P. Salinas, J. Martínez-Zapater, J. M. |
author_sort |
Lozano, R. |
title |
Tomato flower abnormalities induced by low temperatures are associated with changes of expression of MADS-box genes |
title_short |
Tomato flower abnormalities induced by low temperatures are associated with changes of expression of MADS-box genes |
title_full |
Tomato flower abnormalities induced by low temperatures are associated with changes of expression of MADS-box genes |
title_fullStr |
Tomato flower abnormalities induced by low temperatures are associated with changes of expression of MADS-box genes |
title_full_unstemmed |
Tomato flower abnormalities induced by low temperatures are associated with changes of expression of MADS-box genes |
title_sort |
tomato flower abnormalities induced by low temperatures are associated with changes of expression of mads-box genes |
publisher |
Oxford University Press |
publishDate |
1998 |
url |
http://hdl.handle.net/20.500.12792/2526 http://hdl.handle.net/10261/293371 |
work_keys_str_mv |
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