ArticleInternational journal of molecular sciences2016
Ras-Related Nuclear Protein Ran3B Gene Is Involved in Hormone Responses in the Embryogenic Callus of Dimocarpus longan Lour.
Article in International journal of molecular sciences, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 5 citations in OpenAlex.
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- Emerging role of small GTPases and their interactome in plants to combat abiotic and biotic stress.Protoplasma · 2023Review
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5 authors at 1 institution in 1 country.
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Abstract
Ras-related guanosine triphosphate (GTP)-binding nuclear protein (Ran) GTPases function as molecular switches and regulate diverse cellular events in eukaryotes. Our previous work suggested that DlRan3B is active during longan (Dimocarpus longan Lour.) somatic embryogenesis (SE) processes. Herein, subcellular localization of DlRan3B was found to be localized in the nucleus and expression profiling of DlRan3B was performed during longan SE and after exposure to plant hormones (indoleacetic acid (IAA), gibberellin A3 (GA₃), salicylic acid (SA), methyl jasmonte (MeJA), and abscisic acid (ABA)). We cloned and sequenced 1569 bp of 5'-flanking sequence of DlRan3B (GenBank: JQ279697). Bioinformatic analysis indicated that the promoter contained plant hormone-related regulatory elements. Deletion analysis and responses to hormones identified stimulative and repressive regulatory elements in the DlRan3B promoter. The key elements included those responding to auxin, gibberellin, SA, MeJA, and ABA. DlRan3B was located in the nucleus and accumulated in the late stage of longan SE. The expression of DlRan3B was significantly induced by IAA, GA₃, and ABA, but suppressed by SA and MeJA. Promoter transcription was induced by IAA and GA₃, but suppressed by SA. Thus, DlRan3B might participate in auxin, gibberellin, and ABA responses during longan late SE, and DlRan3B is involved in phytohormone responsiveness.
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