Possible molecular mechanisms of persistent pollen tube growth without de novo transcription
The vegetative cell nucleus proceeds ahead of a pair of sperm cells located beneath the pollen tube tip during germination. The tip-localized vegetative nucleus had been considered to play a pivotal role in the control of directional pollen tube growth and double fertilization. However, we recently...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-11-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.1020306/full |
| _version_ | 1811209943801397248 |
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| author | Kazuki Motomura Kazuki Motomura Kazuki Motomura Naoya Sugi Atsushi Takeda Shohei Yamaoka Daisuke Maruyama |
| author_facet | Kazuki Motomura Kazuki Motomura Kazuki Motomura Naoya Sugi Atsushi Takeda Shohei Yamaoka Daisuke Maruyama |
| author_sort | Kazuki Motomura |
| collection | DOAJ |
| description | The vegetative cell nucleus proceeds ahead of a pair of sperm cells located beneath the pollen tube tip during germination. The tip-localized vegetative nucleus had been considered to play a pivotal role in the control of directional pollen tube growth and double fertilization. However, we recently reported the female-targeting behavior of pollen tubes from mutant plants, of which the vegetative nucleus and sperm nuclei were artificially immotile. We showed that the apical region of the mutant pollen tubes became physiologically enucleated after the first callose plug formation, indicating the autonomously growing nature of pollen tubes without the vegetative nucleus and sperm cells. Thus, in this study, we further analyzed another Arabidopsis thaliana mutant producing physiologically enucleated pollen tubes and discussed the mechanism by which a pollen tube can grow without de novo transcription from the vegetative nucleus. We propose several possible molecular mechanisms for persistent pollen tube growth, such as the contribution of transcripts before and immediately after germination and the use of persistent transcripts, which may be important for a competitive race among pollen tubes. |
| first_indexed | 2024-04-12T04:47:40Z |
| format | Article |
| id | doaj.art-16c0eaf0e8994030a8ca5e9a44c0b924 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-12T04:47:40Z |
| publishDate | 2022-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-16c0eaf0e8994030a8ca5e9a44c0b9242022-12-22T03:47:25ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-11-011310.3389/fpls.2022.10203061020306Possible molecular mechanisms of persistent pollen tube growth without de novo transcriptionKazuki Motomura0Kazuki Motomura1Kazuki Motomura2Naoya Sugi3Atsushi Takeda4Shohei Yamaoka5Daisuke Maruyama6College of Life Sciences, Ritsumeikan University, Kusatsu, JapanJapanese Science and Technology Agency, PRESTO, Kawaguchi, JapanInstitute of Transformative Bio-Molecules, Nagoya University, Nagoya, JapanKihara Institute for Biological Research, Yokohama City University, Yokohama, JapanCollege of Life Sciences, Ritsumeikan University, Kusatsu, JapanGraduate School of Biostudies, Kyoto University, Kyoto, JapanKihara Institute for Biological Research, Yokohama City University, Yokohama, JapanThe vegetative cell nucleus proceeds ahead of a pair of sperm cells located beneath the pollen tube tip during germination. The tip-localized vegetative nucleus had been considered to play a pivotal role in the control of directional pollen tube growth and double fertilization. However, we recently reported the female-targeting behavior of pollen tubes from mutant plants, of which the vegetative nucleus and sperm nuclei were artificially immotile. We showed that the apical region of the mutant pollen tubes became physiologically enucleated after the first callose plug formation, indicating the autonomously growing nature of pollen tubes without the vegetative nucleus and sperm cells. Thus, in this study, we further analyzed another Arabidopsis thaliana mutant producing physiologically enucleated pollen tubes and discussed the mechanism by which a pollen tube can grow without de novo transcription from the vegetative nucleus. We propose several possible molecular mechanisms for persistent pollen tube growth, such as the contribution of transcripts before and immediately after germination and the use of persistent transcripts, which may be important for a competitive race among pollen tubes.https://www.frontiersin.org/articles/10.3389/fpls.2022.1020306/fullpollen tube growthpollen tube guidancemale germ unitvegetative nucleusplant reproductiongene expression |
| spellingShingle | Kazuki Motomura Kazuki Motomura Kazuki Motomura Naoya Sugi Atsushi Takeda Shohei Yamaoka Daisuke Maruyama Possible molecular mechanisms of persistent pollen tube growth without de novo transcription Frontiers in Plant Science pollen tube growth pollen tube guidance male germ unit vegetative nucleus plant reproduction gene expression |
| title | Possible molecular mechanisms of persistent pollen tube growth without de novo transcription |
| title_full | Possible molecular mechanisms of persistent pollen tube growth without de novo transcription |
| title_fullStr | Possible molecular mechanisms of persistent pollen tube growth without de novo transcription |
| title_full_unstemmed | Possible molecular mechanisms of persistent pollen tube growth without de novo transcription |
| title_short | Possible molecular mechanisms of persistent pollen tube growth without de novo transcription |
| title_sort | possible molecular mechanisms of persistent pollen tube growth without de novo transcription |
| topic | pollen tube growth pollen tube guidance male germ unit vegetative nucleus plant reproduction gene expression |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.1020306/full |
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