文献类型： 外文期刊

作者： Yuan, Shu-na ¹ ; Waqas, Malik ¹ ; Hua, Shui-jin ³ ; Bibi, Noreen ¹ ; Wang, Xue-de ¹ ;

作者机构： 1.Zhejiang Univ, Coll Agr & Biotechnol, Hangzhou 310058, Zhejiang, Peoples R China

2.Bahauddin Zakariya Univ, Univ Coll Agr, Dept Plant Breeding & Genet, Multan, Pakistan

3.Zhejiang Acad Agr Sci, Inst Crop & Nucl Technol Utilizat, Hangzhou 310021, Zhejiang, Peoples R China

关键词： Cytochrome c oxidase;Polyphenol oxidase;Fiber length;Rotenone;Thiourea

期刊名称：JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B （ 影响因子：3.066； 五年影响因子：3.057 ）

ISSN： 1673-1581

年卷期： 2012 年 13 卷 6 期

页码：

收录情况： SCI

摘要： Colored cotton has naturally pigmented fibers. The mechanism of pigmentation in cotton fiber is not well documented. This experiment was conducted to study the effects of respiratory chain inhibitors, i.e., rotenone and thiourea, on pigmentation and fiber development in colored cotton. After 1 d post-anthesis, ovaries were harvested and developing ovules were cultured on the liquid medium containing different concentrations of rotenone and thiourea for 30 d. The results demonstrate that both respiratory inhibitors reduced fiber length and ovule development under ovule culture conditions, and the inhibition efficiency of rotenone was much higher than that of thiourea. Rotenone and thiourea also showed significant effects on fiber pigment (color) development in colored cotton. In green cotton fiber, rotenone advanced fiber pigment development by 7 d at 200 mu mol/L, while thiourea inhibited fiber pigmentation at all treatment levels (400, 600, 800, 1 000, and 2 000 mu mol/L). Both respiratory inhibitors, however, had no significant effects on pigmentation of brown cotton fibers. The activities of cytochrome c oxidase (COX) and polyphenol oxidase (PPO) decreased significantly with increasing levels of both respiratory inhibitors. It is suggested that both respiratory inhibitors have important roles in deciphering the mechanism of pigmentation and fiber development in colored cotton.