Auxin-like effects of the natural coumarin scopoletin on Arabidopsis cell structure and morphology

被引：34

作者：

Grana, Elisa ^{[1
]}

Costas-Gil, Aitana ^{[1
]}

Longueira, Sabela ^{[1
]}

Celeiro, Maria ^{[2
]}

Teijeira, Marta ^{[2
,3
]}

Reigosa, Manuel J. ^{[1
]}

Sanchez-Moreiras, Adela M. ^{[1
]}

机构：

[1] Univ Vigo, Fac Biol, Dept Plant Biol & Soil Sci, Campus Lagoas Marcosende S-N, Vigo 36310, Spain

[2] Univ Vigo, Fac Chem, Dept Organ Chem, Campus Lagoas Marcosende S-N, Vigo 36310, Spain

[3] Univ Vigo, IISGS, Vigo 36310, Spain

来源：

JOURNAL OF PLANT PHYSIOLOGY | 2017年 / 218卷

关键词：

Coumarin; TIR1; Mode of action; Phytotoxicity; Secondary metabolite; Auxinic bioherbicide; ROOT-GROWTH; 2,4-DICHLOROPHENOXYACETIC ACID; THALIANA; RECEPTOR; PLANTS; ACCUMULATION; MICROTUBULES; GRAVITROPISM; HOMEOSTASIS; PERCEPTION;

D O I：

10.1016/j.jplph.2017.07.007

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The mode of action and phytotoxic potential of scopoletin, a natural compound belonging to the group of coumarins, has been evaluated in detail. Analysis conducted by light and electron transmission microscopy showed strong cell and tissue abnormalities on treated roots, such as cell wall malformations, multi-nucleated cells, abnormal nuclei and tissue disorganization. Scopoletin compromised root development by inducing wrong microtubule assembling, mitochondrial membrane depolarization and ultimate cell death, in a way similar to auxin herbicides. The structural similarities of the natural compound scopoletin and the auxin herbicide 2,4-D, as well as the ability of scopoletin to fit into the auxin-binding site TIR1, were analyzed, suggesting that the phytotoxic activity of scopoletin matches with that exhibited by auxinic herbicides.

引用

页码：45 / 55

页数：11

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