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Reference Detail
| Reference | ||
|---|---|---|
| Author | Cai Z., Dai Y., Jin X., Xu H., Huang Z., Xie Z., Yu X., Luo J. | |
| Title | Ambient temperature regulates root circumnutation in rice through the ethylene pathway: transcriptome analysis reveals key genes involved. | |
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Abstract: Plant roots are constantly prepared to adjust their growth trajectories to avoid unfavorable environments, and their ability to reorient is particularly crucial for survival. Under laboratory conditions, this continuous reorientation of the root tip is manifested as coiling or waving, which we refer to as root circumnutation. However, the effect of ambient temperature (AT) on root circumnutation remains unexplored. In this study, rice seedlings were employed to assess the impact of varying ATs on root circumnutation. The role of ethylene in mediating root circumnutation under elevated AT was examined using the ethylene biosynthesis inhibitor aminooxyacetic acid (AOA) and the ethylene perception antagonist silver thiosulfate (STS). Furthermore, transcriptome sequencing, weighted gene co-expression network analysis, and real-time quantitative PCR were utilized to analyze gene expressions in rice root tips under four distinct treatments: 25°C, 35°C, 35°C+STS, and 35°C+AOA. As a result, genes associated with ethylene synthesis and signaling (<i>OsACOs</i> and <i>OsERFs</i>), auxin synthesis and transport (<i>OsYUCCA6</i>, <i>OsABCB15</i>, and <i>OsNPFs</i>), cell elongation (<i>OsEXPAs</i>, <i>OsXTHs</i>, <i>OsEGL1</i>, and <i>OsEXORDIUMs</i>), as well as the inhibition of root curling (<i>OsRMC</i>) were identified. Notably, the expression levels of these genes increased with rising temperatures above 25°C. This study is the first to demonstrate that elevated AT can induce root circumnutation in rice via the ethylene pathway and proposes a potential molecular model through the identification of key genes. These findings offer valuable insights into the growth regulation mechanism of plant roots under elevated AT conditions. |
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| Journal | Front Plant Sci | |
| Country | China | |
| Volume | 15 | |
| Pages | 1348295 | |
| Year | 2024 | |
| PubMed ID | 38525142 | |
| PubMed Central ID | 10957643 | |
| DOI | 10.3389/fpls.2024.1348295 | |
| URL | - | |
| Relation | ||
| Gene | ACO5 ACO7 ERF81 ERF82 ERF83 ERF88 EXPA29 EXPA6 GNS1 MDR1 RMC SUB1B XTH16 XTH19 YUCCA6 _ _ _ _ _ _ | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
|
Lethal Embryo Mutantion Strain |
- | |
|
Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
