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Yong-Yoon Chung,Minjung Kwun,Youngju Choi,Hyejin Yoon,Beom-Seok Park,Bong-Joong Kang 한국분자세포생물학회 2004 Molecules and cells Vol.18 No.1
In Brassica campestris, self-incompatibility (SI) can be overcome by CO2 gas treatment. Previously, we reported inhibition of the SI in the Brassica campestris line, 734, by CO2 gas. In this study, we used a cDNA microarray comprising 1,184 unique cDNA ESTs from a pistil-specific cDNA library of the Brassica line to examine the expression of the pistil genes in response to CO2. Microarray analysis revealed that expression of 2% of the pistil genes was altered by exposure to CO2 gas. Surprisingly, the SLG gene of the susceptible line was one of the down-regulated genes. Transmission electron microscopic analysis showed that the CO2 caused morphological changes in the papillary cell. Our results demonstrate that the overcoming of SI by CO2 gas involves reduced expression of the SLG gene in Brassica.