Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently?
Strigolactones (SLs) are essential host recognition signals for both root-parasitic plants and arbuscular mycorrhizal (AM) fungi in the rhizosphere, and in planta SLs or their metabolites function as a novel class of plant hormones that regulate various aspects of plant growth through crosstalk with...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2020-05-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fpls.2020.00438/full |
| _version_ | 1819315761303257088 |
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| author | Kaori Yoneyama Kaori Yoneyama Xiaonan Xie Takahito Nomura Koichi Yoneyama Koichi Yoneyama |
| author_facet | Kaori Yoneyama Kaori Yoneyama Xiaonan Xie Takahito Nomura Koichi Yoneyama Koichi Yoneyama |
| author_sort | Kaori Yoneyama |
| collection | DOAJ |
| description | Strigolactones (SLs) are essential host recognition signals for both root-parasitic plants and arbuscular mycorrhizal (AM) fungi in the rhizosphere, and in planta SLs or their metabolites function as a novel class of plant hormones that regulate various aspects of plant growth through crosstalk with other hormones. Although nutrient availability is one of the important factors influencing SL production and exudation, and phosphate (Pi) deficiency significantly promotes SL production and exudation in host plants of AM fungi, how nutrient availability modulates SL production and exudation remains elusive. Cytokinin (CK), a canonical plant hormone, has extensively been studied as a shoot branching promoter and its biosynthesis is also influenced by mineral nutrients, especially nitrate, indicating that CK might be another key factor that affect SL production and exudation. In the present study, we show that CKs (t-zeatin, benzyladenine, kinetin, and CPPU) applied to hydroponic culture media significantly suppressed the SL levels in both the root exudates and the root tissues of rice plants grown under Pi deficiency. In a split-root system, CK suppressed SL production locally, while Pi affected SL production systemically, suggesting that Pi and CK act on SL production independently in rice plants. |
| first_indexed | 2024-12-24T10:05:14Z |
| format | Article |
| id | doaj.art-7c9ed231de1a4a7a82f85a2bd5f97b9f |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-24T10:05:14Z |
| publishDate | 2020-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-7c9ed231de1a4a7a82f85a2bd5f97b9f2022-12-21T17:00:52ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2020-05-011110.3389/fpls.2020.00438533873Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently?Kaori Yoneyama0Kaori Yoneyama1Xiaonan Xie2Takahito Nomura3Koichi Yoneyama4Koichi Yoneyama5Graduate School of Agriculture, Ehime University, Matsuyama, JapanPRESTO, Japan Science and Technology, Kawaguchi, JapanCenter for Bioscience Research and Education, Utsunomiya University, Utsunomiya, JapanCenter for Bioscience Research and Education, Utsunomiya University, Utsunomiya, JapanCenter for Bioscience Research and Education, Utsunomiya University, Utsunomiya, JapanWomen’s Future Development Center, Ehime University, Matsuyama, JapanStrigolactones (SLs) are essential host recognition signals for both root-parasitic plants and arbuscular mycorrhizal (AM) fungi in the rhizosphere, and in planta SLs or their metabolites function as a novel class of plant hormones that regulate various aspects of plant growth through crosstalk with other hormones. Although nutrient availability is one of the important factors influencing SL production and exudation, and phosphate (Pi) deficiency significantly promotes SL production and exudation in host plants of AM fungi, how nutrient availability modulates SL production and exudation remains elusive. Cytokinin (CK), a canonical plant hormone, has extensively been studied as a shoot branching promoter and its biosynthesis is also influenced by mineral nutrients, especially nitrate, indicating that CK might be another key factor that affect SL production and exudation. In the present study, we show that CKs (t-zeatin, benzyladenine, kinetin, and CPPU) applied to hydroponic culture media significantly suppressed the SL levels in both the root exudates and the root tissues of rice plants grown under Pi deficiency. In a split-root system, CK suppressed SL production locally, while Pi affected SL production systemically, suggesting that Pi and CK act on SL production independently in rice plants.https://www.frontiersin.org/article/10.3389/fpls.2020.00438/fullstrigolactonecytokininphosphate deficiencybiosynthesisrice |
| spellingShingle | Kaori Yoneyama Kaori Yoneyama Xiaonan Xie Takahito Nomura Koichi Yoneyama Koichi Yoneyama Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently? Frontiers in Plant Science strigolactone cytokinin phosphate deficiency biosynthesis rice |
| title | Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently? |
| title_full | Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently? |
| title_fullStr | Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently? |
| title_full_unstemmed | Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently? |
| title_short | Do Phosphate and Cytokinin Interact to Regulate Strigolactone Biosynthesis or Act Independently? |
| title_sort | do phosphate and cytokinin interact to regulate strigolactone biosynthesis or act independently |
| topic | strigolactone cytokinin phosphate deficiency biosynthesis rice |
| url | https://www.frontiersin.org/article/10.3389/fpls.2020.00438/full |
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