Coronatine 冠菌素


冠菌素(coronatine,COR)是由一个含氨基酸的冠烷酸(coronamic acid,CMA)和一个聚酮结构的冠菌酸(coronafacic acid,CFA)以酰胺键联结而成的新型植物生长调节物质。   

0.05-0.5 mmo1/L的COR能使马铃 的 能使马铃 薯淀粉酶活性增加,淀粉颗粒降解, 淀粉酶活性增加,淀粉颗粒降解, 增加 促进块茎膨大 调节花期 细胞内水势降低,渗透压增大 水势降低 增大, 细胞内水势降低,渗透压增大,细 胞大量吸水增大,同时纤维素酶、 胞大量吸水增大,同时纤维素酶、 多聚半乳糖醛酸酶和多聚甲基半乳 糖醛酸酶等细胞壁降解酶大量积累, 细胞壁降解酶大量积累 糖醛酸酶等细胞壁降解酶大量积累, 增强作物抗性 冠菌素 采摘脱落剂 细胞壁松弛 导致细胞壁 导致细胞壁松弛 ,从而使马铃薯块 茎膨大。 茎膨大。 除草剂 提高次级 代谢产物含量


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from Pseudomonas syringae pv. Glycinea

Storage Temperature –20 °C

CAS#: 62251-96-1
Synonyms: COR; Cyclopropanecarboxylic acid, 2-ethyl-
4-yl)carbonyl] amino]
Product Description
Molecular weight: 319.4 Da
Molecular formula: C18H25NO4

Coronatine (COR) is a polyketide phytotoxin produced by several members of the Pseudomonas syringae group of pathovars.
The structure of COR has two distinct components: the polyketide coronafacic acid (CFA) and coronamic acid (CMA), an ethylcyclopropyl amino acid derived from isoleucine.
The primary symptom elicited by COR is a diffuse chlorosis that can be induced on a wide variety of plant species. The reaction of Arabidopsis thaliana to exogenously applied COR is atypical; instead of chlorosis, anthocyanins accumulate at the site of inoculation and the tissue develops a strong purple hue.

COR is also known to induce hypertrophy, to inhibit root elongation, and to stimulate ethylene production.
COR is reported to induce several changes in tomato tissue.
For example, the epidermal wall was significantly thicker and the chloroplasts stained more intensively and were smaller. One of the most pronounced effects was the appearance of proteinase inhibitors.
Striking structural and functional homologies between COR, methyl jasmonate, and 12-oxo-phytodienoic acid suggest that COR mimics the octadecanoid signaling molecules of higher plants.
Purity: >95% (HPLC)

Preparation Instructions : Coronatine is soluble in methanol (20 mg/ml), DMSO (20 mg/ml), and in water (0.2 mg/ml).
Storage/Stability: The supplied unopened vial is stable for 2 years if stored at –20 °C. A solution at 0.2 mg/ml in water, methanol, or DMSO is stable for 2 years at –20 °C (as
determined by HPLC).