Primary style protein expression in the self-incompatible/compatible apricot by the 2D-DIGE technique

Gene
Xiaoyan CaoHuaifeng Liu

Abstract

In order to explore the molecular mechanism underlying self-incompatibility (SI) in the apricot (Prunus armeniaca L.) at the proteome level, we examined the style proteomes at different stages of flower development: small bud, big bud, 24h after self-pollination and 24h after cross-pollination with cultivar Badanshui in the SI apricot cultivar Xinshiji and the self-compatible (SC) apricot cultivar Katy by 2D fluorescence difference gel electrophoresis (2D-DIGE) and mass spectrometry (MS). About 1500 style protein spots were detected; 66 were expressed differently in the four stages in Xinshiji. About 1600 style protein spots were detected; 143 were expressed differently in the four stages of flower development in Katy. In Xinshiji, one protein was expressed specifically, four proteins showed up-regulated expression and twenty-nine proteins showed down-regulated expression in the cross-pollinated style compared to the self-pollinated style. Thirteen proteins were identified unambiguously. In Katy, three proteins were expressed specifically, five proteins showed up-regulated expression and thirteen proteins showed down-regulated expression in the cross-pollinated style compared to self-pollinated style. Seven proteins were identi...Continue Reading

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