ArticleThe Plant journal : for cell and molecular biology2019
Developmental analysis of the early steps in strigolactone-mediated axillary bud dormancy in rice.
Article in The Plant journal : for cell and molecular biology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
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33 citing papers in PubMed, 67 citations in OpenAlex.
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- The role of strigolactone analog (GR24) in endogenous hormone metabolism and hormone-related gene expression in tobacco axillary buds.Plant cell reports · 2023Article
- Transcriptomic analysis implicates ABA signaling and carbon supply in the differential outgrowth of petunia axillary buds.BMC plant biology · 2023Article
- Strigolactones and Shoot Branching: What Is the Real Hormone and How Does It Work?Plant & cell physiology · 2023Review
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- INTERMEDIUM-C mediates the shade-induced bud growth arrest in barley.Journal of experimental botany · 2022Article
- Physiological mechanism of strigolactone enhancing tolerance to low light stress in cucumber seedlings.BMC plant biology · 2022Article
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Authors and funding
10 authors at 6 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
By contrast with rapid progress in understanding the mechanisms of biosynthesis and signaling of strigolactone (SL), mechanisms by which SL inhibits axillary bud outgrowth are less well understood. We established a rice (Oryza sativa L.) hydroponic culture system to observe axillary buds at the critical point when the buds enter the dormant state. In situ hybridization analysis indicated that cell division stops in the leaf primordia of the buds entering dormancy. We compared transcriptomes in the axillary buds isolated by laser capture microdissection before and after entering the dormant state and identified genes that are specifically upregulated or downregulated in dormant buds respectively, in SL-mediated axillary bud dormancy. Typically, cell cycle genes and ribosomal genes are included among the active genes while abscisic acid (ABA)-inducible genes are among the dormant genes. Application of ABA to the hydroponic culture suppressed the growth of axillary buds of SL mutants to the same level as wild-type (WT) buds. Tiller number was decreased in the transgenic lines overexpressing OsNCED1, the gene that encodes ABA biosynthesis enzyme. These results indicated that the main site of SL function is the leaf primordia in the axillary bud and that ABA is involved in SL-mediated axillary bud dormancy.
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