Strigolactones (SLs) modulate the plastochron by regulating KLUH (KLU) transcript abundance in Arabidopsis
| العنوان: | Strigolactones (SLs) modulate the plastochron by regulating KLUH (KLU) transcript abundance in Arabidopsis |
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| المؤلفون: | Catherine Rameau, Alexandre de Saint Germain, Jean-Bernard Pouvreau, Nicolas Arnaud, Philippe Le Bris, Jean-Paul Pillot, Florent Cornet |
| المصدر: | New Phytologist. 232:1909-1916 |
| بيانات النشر: | Wiley, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 0106 biological sciences, 0303 health sciences, Oryza sativa, biology, Arabidopsis Proteins, Physiology, Mutant, Arabidopsis, food and beverages, Strigolactone, Plant Science, Meristem, biology.organism_classification, 01 natural sciences, Cell biology, Lactones, 03 medical and health sciences, Gene Expression Regulation, Plant, Arabidopsis thaliana, Plastochron, Plant hormone, Heterocyclic Compounds, 3-Ring, 030304 developmental biology, 010606 plant biology & botany |
| الوصف: | The timing of leaf emergence at the shoot apical meristem, or plastochron, is highly regulated in plants. Among the genes known to regulate the plastochron in Arabidopsis (Arabidopsis thaliana), KLUH (KLU), orthologous to the rice (Oryza sativa) PLASTOCHRON1, encodes the cytochrome P450 CYP78A5, and is thought to act through generation of a still unknown mobile signal. As klu mutants display not only a short plastochron but also a branching phenotype reminiscent of strigolactone (SL) mutants, we investigated whether KLU/CYP78A5 is involved in SL biosynthesis. We combined a genetic approach, a parasitic plant seed germination bioassay to test klu root exudates, and analysis of transcript abundances of SL-biosynthesis genes in the Arabidopsis klu mutants. We demonstrate that KLU is not involved in the SL-biosynthesis pathway. Moreover, this work allowed us to uncover a new role for SL during Arabidopsis development in modulating plastochron via a KLU-dependent pathway. Globally our data reveal that KLU is required for plastochron-specific SL responses, a first indication of crosstalk between SL and the KLU-derived signal. |
| تدمد: | 1469-8137 0028-646X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2ab80be69581f2de121e2f81d76c6d8Test https://doi.org/10.1111/nph.17725Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....d2ab80be69581f2de121e2f81d76c6d8 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14698137 0028646X |
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