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Gibberellin and the plant growth retardant Paclobutrazol altered fruit shape and ripening in tomato

文献类型： 外文期刊

作者： Chen, Shen 1 ; Wang, Xiao-Jing 3 ; Tan, Guo-Fei 4 ; Zhou, Wen-Qi 5 ; Wang, Guang-Long 6 ;

作者机构： 1.Yangzhou Univ, Coll Hort & Plant Protect, Dept Hort, Yangzhou 225009, Jiangsu, Peoples R China

2.Shaanxi XueQian Normal Univ, Dept Life Sci, Xian 710100, Shaanxi, Peoples R China

3.Univ Connecticut, Dept Plant Sci & Landscape Architecture, Storrs, CT 06269 USA

4.Guizhou Acad Agr Sci, Inst Hort, Guiyang 550006, Guizhou, Peoples R China

5.Gansu Acad Agr Sci, Crop Inst, Lanzhou 730070, Gansu, Peoples R China

6.Huaiyin Inst Technol, Sch Life Sci & Food Engn, Huaian 223003, Peoples R China

关键词： Tomato; Gibberellin; Paclobutrazol; Fruit shape; Fruit ripening

期刊名称：PROTOPLASMA （ 影响因子：3.356； 五年影响因子：3.298 ）

ISSN： 0033-183X

年卷期：

页码：

收录情况： SCI

摘要： Fruit shape and ripening are major horticultural traits for many fruits and vegetable crops. Changes in fruit shape and ripening are often accomplished by altered cell division or cell expansion patterns. Gibberellic acids (GAs) are essential for tomato fruit development; however, the exact role and the underlying mechanism are still elusive. To elucidate the relationship between gibberellins and fruit shape and ripening in tomato, GA(3) and gibberellin biosynthesis inhibitor paclobutrazol (PAC) were applied to tomato. Fruit shape index was increased when GA(3) was applied, which was mainly attributed to the increased organ elongation. The expression levels of genes involved in cell elongation and expansion were altered at the same time. In addition, GA delayed the ripening time by regulating the transcript levels of ethylene-related genes. By contrast, PAC application decreased fruit shape index and shortened fruit ripening time. These results demonstrate that manipulation of GA levels can simultaneously influence tomato fruit shape and ripening. Further studies aimed to regulate fruit shape and ripening can be achieved by altering GA levels.

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