Cytokinin signaling is involved in root hair elongation in response to phosphate starvation
Root hair, single-celled tubular structures originating from the epidermis, plays a vital role in the uptake of nutrients from the soil by increasing the root surface area. Therefore, optimizing root hair growth is crucial for plants to survive in fluctuating environments. Root hair length is determ...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2024-12-01
|
| Series: | Plant Signaling & Behavior |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/15592324.2024.2305030 |
| _version_ | 1826908540225191936 |
|---|---|
| author | Hirotomo Takatsuka Toshiki Amari Masaaki Umeda |
| author_facet | Hirotomo Takatsuka Toshiki Amari Masaaki Umeda |
| author_sort | Hirotomo Takatsuka |
| collection | DOAJ |
| description | Root hair, single-celled tubular structures originating from the epidermis, plays a vital role in the uptake of nutrients from the soil by increasing the root surface area. Therefore, optimizing root hair growth is crucial for plants to survive in fluctuating environments. Root hair length is determined by the action of various plant hormones, among which the roles of auxin and ethylene have been extensively studied. However, evidence for the involvement of cytokinins has remained elusive. We recently reported that the cytokinin-activated B-type response regulators, ARABIDOPSIS RESPONSE REGULATOR 1 (ARR1) and ARR12 directly upregulate the expression of ROOT HAIR DEFECTIVE 6-LIKE 4 (RSL4), which encodes a key transcription factor that controls root hair elongation. However, depending on the nutrient availability, it is unknown whether the ARR1/12–RSL4 pathway controls root hair elongation. This study shows that phosphate deficiency induced the expression of RSL4 and increased the root hair length through ARR1/12, though the transcript and protein levels of ARR1/12 did not change. These results indicate that cytokinins, together with other hormones, regulate root hair growth under phosphate starvation conditions. |
| first_indexed | 2024-03-08T08:48:10Z |
| format | Article |
| id | doaj.art-31b1c31a07d7474987ce612135a6bb00 |
| institution | Directory Open Access Journal |
| issn | 1559-2316 1559-2324 |
| language | English |
| last_indexed | 2025-02-17T09:24:44Z |
| publishDate | 2024-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Plant Signaling & Behavior |
| spelling | doaj.art-31b1c31a07d7474987ce612135a6bb002025-01-02T11:44:26ZengTaylor & Francis GroupPlant Signaling & Behavior1559-23161559-23242024-12-0119110.1080/15592324.2024.23050302305030Cytokinin signaling is involved in root hair elongation in response to phosphate starvationHirotomo Takatsuka0Toshiki Amari1Masaaki Umeda2Kanazawa UniversityKanazawa UniversityNara Institute of Science and TechnologyRoot hair, single-celled tubular structures originating from the epidermis, plays a vital role in the uptake of nutrients from the soil by increasing the root surface area. Therefore, optimizing root hair growth is crucial for plants to survive in fluctuating environments. Root hair length is determined by the action of various plant hormones, among which the roles of auxin and ethylene have been extensively studied. However, evidence for the involvement of cytokinins has remained elusive. We recently reported that the cytokinin-activated B-type response regulators, ARABIDOPSIS RESPONSE REGULATOR 1 (ARR1) and ARR12 directly upregulate the expression of ROOT HAIR DEFECTIVE 6-LIKE 4 (RSL4), which encodes a key transcription factor that controls root hair elongation. However, depending on the nutrient availability, it is unknown whether the ARR1/12–RSL4 pathway controls root hair elongation. This study shows that phosphate deficiency induced the expression of RSL4 and increased the root hair length through ARR1/12, though the transcript and protein levels of ARR1/12 did not change. These results indicate that cytokinins, together with other hormones, regulate root hair growth under phosphate starvation conditions.http://dx.doi.org/10.1080/15592324.2024.2305030root hairphosphate starvationcytokininresponse regulatorrsl4 |
| spellingShingle | Hirotomo Takatsuka Toshiki Amari Masaaki Umeda Cytokinin signaling is involved in root hair elongation in response to phosphate starvation Plant Signaling & Behavior root hair phosphate starvation cytokinin response regulator rsl4 |
| title | Cytokinin signaling is involved in root hair elongation in response to phosphate starvation |
| title_full | Cytokinin signaling is involved in root hair elongation in response to phosphate starvation |
| title_fullStr | Cytokinin signaling is involved in root hair elongation in response to phosphate starvation |
| title_full_unstemmed | Cytokinin signaling is involved in root hair elongation in response to phosphate starvation |
| title_short | Cytokinin signaling is involved in root hair elongation in response to phosphate starvation |
| title_sort | cytokinin signaling is involved in root hair elongation in response to phosphate starvation |
| topic | root hair phosphate starvation cytokinin response regulator rsl4 |
| url | http://dx.doi.org/10.1080/15592324.2024.2305030 |
| work_keys_str_mv | AT hirotomotakatsuka cytokininsignalingisinvolvedinroothairelongationinresponsetophosphatestarvation AT toshikiamari cytokininsignalingisinvolvedinroothairelongationinresponsetophosphatestarvation AT masaakiumeda cytokininsignalingisinvolvedinroothairelongationinresponsetophosphatestarvation |