In vitro inhibition of pigmentation and fiber development in colored cotton

查看全文 作　　者：Shu-na [1]YUAN;Waqas [1,2]MALIK;Shui-jin [3]HUA;Noreen [1]BIBI;Xue-de [1]WANG

机构地区：[1]College of Agriculture and Biotechnology,Zhejiang University,Hangzhou 310058,China;[2]Department of Plant Breeding and Genetics,University College of Agriculture,Bahauddin Zakariya University,Multan,Pakistan;[3]Institute of Crop and Nuclear Technology Utilization,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China

出　　处：《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》索引2012年第13卷第6期,共9页

基　　金：Project supported by the National Basic Research Program (973) of China (No.2004CB11730502);the National Natural Science Foundation of China (No.31171616/C1306);the Zhejiang Provincial Natural Science Foundation (No.Y306093);the Zhejiang Provincial Science and Technology Support Program (No.2008C22087),China 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 μmol/L,while thiourea inhibited fiber pigmentation at all treatment levels (400,600,800,1000,and 2000 μmol/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. 关键词：细胞色素 c oxidase 多酚 oxidase 纤维长度毒鱼藤素 THIOUREA

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In vitro inhibition of pigmentation and fiber development in colored cotton

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