Root hydrotropism is controlled via a cortex-specific growth mechanism
Plants can acclimate by using tropisms to link the direction of growth to environmental conditions. Hydrotropism allows roots to forage for water, a process known to depend on abscisic acid (ABA) but whose molecular and cellular basis remains unclear. Here, we show that hydrotropism still occurs in...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
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Nature Publishing Group
2017
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| Online Access: | https://eprints.nottingham.ac.uk/41761/ |
| _version_ | 1848796348561752064 |
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| author | Dietrich, Daniela Pang, Lei Kobayashi, Akie Fozard, John A. Boudolf, Véronique Bhosale, Rahul Antoni, Regina Nguyen, Tuan Hiratsuka, Sotaro Fujii, Nobuharu Miyazawa, Yutaka Bae, Tae-Woong Wells, Darren M. Owen, Markus R. Band, Leah R. Dyson, Rosemary J. Jensen, Oliver E. King, John R. Tracy, Saoirse R. Sturrock, Craig Mooney, Sacha J. Roberts, Jeremy A. Bhalerao, Rishikesh P. Dinneny, José R. Rodriguez, Pedro L. Nagatani, Akira Hosokawa, Yoichiroh Baskin, Tobias I. Pridmore, Tony P. De Veylder, Lieven Takahashi, Hideyuki Bennett, Malcolm J. |
| author_facet | Dietrich, Daniela Pang, Lei Kobayashi, Akie Fozard, John A. Boudolf, Véronique Bhosale, Rahul Antoni, Regina Nguyen, Tuan Hiratsuka, Sotaro Fujii, Nobuharu Miyazawa, Yutaka Bae, Tae-Woong Wells, Darren M. Owen, Markus R. Band, Leah R. Dyson, Rosemary J. Jensen, Oliver E. King, John R. Tracy, Saoirse R. Sturrock, Craig Mooney, Sacha J. Roberts, Jeremy A. Bhalerao, Rishikesh P. Dinneny, José R. Rodriguez, Pedro L. Nagatani, Akira Hosokawa, Yoichiroh Baskin, Tobias I. Pridmore, Tony P. De Veylder, Lieven Takahashi, Hideyuki Bennett, Malcolm J. |
| author_sort | Dietrich, Daniela |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Plants can acclimate by using tropisms to link the direction of growth to environmental conditions. Hydrotropism allows roots to forage for water, a process known to depend on abscisic acid (ABA) but whose molecular and cellular basis remains unclear. Here, we show that hydrotropism still occurs in roots after laser ablation removed the meristem and root cap. Additionally, targeted expression studies reveal that hydrotropism depends on the ABA signalling kinase, SnRK2.2, and the hydrotropism-specific MIZ1, both acting specifically in elongation zone cortical cells. Conversely, hydrotropism, but not gravitropism, is inhibited by preventing differential cell-length increases in the cortex, but not in other cell types. We conclude that root tropic responses to gravity and water are driven by distinct tissue-based mechanisms. In addition, unlike its role in root gravitropism, the elongation zone performs a dual function during a hydrotropic response, both sensing a water potential gradient and subsequently undergoing differential growth. |
| first_indexed | 2025-11-14T19:46:33Z |
| format | Article |
| id | nottingham-41761 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:46:33Z |
| publishDate | 2017 |
| publisher | Nature Publishing Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-417612020-05-04T18:44:59Z https://eprints.nottingham.ac.uk/41761/ Root hydrotropism is controlled via a cortex-specific growth mechanism Dietrich, Daniela Pang, Lei Kobayashi, Akie Fozard, John A. Boudolf, Véronique Bhosale, Rahul Antoni, Regina Nguyen, Tuan Hiratsuka, Sotaro Fujii, Nobuharu Miyazawa, Yutaka Bae, Tae-Woong Wells, Darren M. Owen, Markus R. Band, Leah R. Dyson, Rosemary J. Jensen, Oliver E. King, John R. Tracy, Saoirse R. Sturrock, Craig Mooney, Sacha J. Roberts, Jeremy A. Bhalerao, Rishikesh P. Dinneny, José R. Rodriguez, Pedro L. Nagatani, Akira Hosokawa, Yoichiroh Baskin, Tobias I. Pridmore, Tony P. De Veylder, Lieven Takahashi, Hideyuki Bennett, Malcolm J. Plants can acclimate by using tropisms to link the direction of growth to environmental conditions. Hydrotropism allows roots to forage for water, a process known to depend on abscisic acid (ABA) but whose molecular and cellular basis remains unclear. Here, we show that hydrotropism still occurs in roots after laser ablation removed the meristem and root cap. Additionally, targeted expression studies reveal that hydrotropism depends on the ABA signalling kinase, SnRK2.2, and the hydrotropism-specific MIZ1, both acting specifically in elongation zone cortical cells. Conversely, hydrotropism, but not gravitropism, is inhibited by preventing differential cell-length increases in the cortex, but not in other cell types. We conclude that root tropic responses to gravity and water are driven by distinct tissue-based mechanisms. In addition, unlike its role in root gravitropism, the elongation zone performs a dual function during a hydrotropic response, both sensing a water potential gradient and subsequently undergoing differential growth. Nature Publishing Group 2017-05-08 Article PeerReviewed Dietrich, Daniela, Pang, Lei, Kobayashi, Akie, Fozard, John A., Boudolf, Véronique, Bhosale, Rahul, Antoni, Regina, Nguyen, Tuan, Hiratsuka, Sotaro, Fujii, Nobuharu, Miyazawa, Yutaka, Bae, Tae-Woong, Wells, Darren M., Owen, Markus R., Band, Leah R., Dyson, Rosemary J., Jensen, Oliver E., King, John R., Tracy, Saoirse R., Sturrock, Craig, Mooney, Sacha J., Roberts, Jeremy A., Bhalerao, Rishikesh P., Dinneny, José R., Rodriguez, Pedro L., Nagatani, Akira, Hosokawa, Yoichiroh, Baskin, Tobias I., Pridmore, Tony P., De Veylder, Lieven, Takahashi, Hideyuki and Bennett, Malcolm J. (2017) Root hydrotropism is controlled via a cortex-specific growth mechanism. Nature Plants, 3 . p. 17057. ISSN 2055-0278 https://www.nature.com/articles/nplants201757 doi:10.1038/nplants.2017.57 doi:10.1038/nplants.2017.57 |
| spellingShingle | Dietrich, Daniela Pang, Lei Kobayashi, Akie Fozard, John A. Boudolf, Véronique Bhosale, Rahul Antoni, Regina Nguyen, Tuan Hiratsuka, Sotaro Fujii, Nobuharu Miyazawa, Yutaka Bae, Tae-Woong Wells, Darren M. Owen, Markus R. Band, Leah R. Dyson, Rosemary J. Jensen, Oliver E. King, John R. Tracy, Saoirse R. Sturrock, Craig Mooney, Sacha J. Roberts, Jeremy A. Bhalerao, Rishikesh P. Dinneny, José R. Rodriguez, Pedro L. Nagatani, Akira Hosokawa, Yoichiroh Baskin, Tobias I. Pridmore, Tony P. De Veylder, Lieven Takahashi, Hideyuki Bennett, Malcolm J. Root hydrotropism is controlled via a cortex-specific growth mechanism |
| title | Root hydrotropism is controlled via a cortex-specific growth mechanism |
| title_full | Root hydrotropism is controlled via a cortex-specific growth mechanism |
| title_fullStr | Root hydrotropism is controlled via a cortex-specific growth mechanism |
| title_full_unstemmed | Root hydrotropism is controlled via a cortex-specific growth mechanism |
| title_short | Root hydrotropism is controlled via a cortex-specific growth mechanism |
| title_sort | root hydrotropism is controlled via a cortex-specific growth mechanism |
| url | https://eprints.nottingham.ac.uk/41761/ https://eprints.nottingham.ac.uk/41761/ https://eprints.nottingham.ac.uk/41761/ |