The Regulation of 1-methylcyclopropene on Softening and Expression of Relevant Genes in‘Taishan Zaoxia’Apple

ACTA HORTICULTURAE SINICA ›› 2012, Vol. 39 ›› Issue (5): 845-852.

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The Regulation of 1-methylcyclopropene on Softening and Expression of Relevant Genes in‘Taishan Zaoxia’Apple

LIU Mei-Yan, WEI Jing-Li, LIU Jin, FANG Long, SONG Yang, CUI Mei, WANG Chuan-Zeng, CHEN Xue-Sen

（1State Key Laboratory of Crop Biology，Shandong Agricultural Uiversity，Tai’an，Shandong 271018，China；2Guanxian State Forest Farm of Populas Tomentosa，Guanxian，Shandong 252500，China）

Online:2012-05-25 Published:2012-05-25

Abstract

Abstract: In order to study the molecular softening mechanism of‘Taishan Zaoxia’apple，the effect of 1-MCP on softening and expressions of genes related to softening in‘Taishan Zaoxia’were investigated. The results showed that：①The firmness of‘Taishan Zaoxia’fruit treated with 1-MCP were higher than the control fruit during the storage after harvest．②Ethylene production rate and the expression of PG，PME，β-Gal，α-L-Af and LOX genes of‘Taishan Zaoxia’fruit were inhibited significantly throughout the whole experimental period after treated with 1-MCP，especially in the first day after treatment. They decreased 72.0%，72.1%，87.5%，81.8%，90.2% and 16.7% than control respectively. But 1-MCP had no effect on expression of AM and XET genes. These results indicated that‘Taishan Zaoxia’apple variety was very sensitive to ethylene and 1-MCP could delay softening of‘Taishan Zaoxia’fruit obviously；The fruit softening may be caused by synergistic effect of PG，PME，β-Gal，α-L-Af and LOX genes．

Key words: apple, early-maturing, storage, softening, 1-MCP, cell wall enzyme, gene, express

LIU Mei-Yan, WEI Jing-Li, LIU Jin, FANG Long, SONG Yang, CUI Mei, WANG Chuan-Zeng, CHEN Xue-Sen. The Regulation of 1-methylcyclopropene on Softening and Expression of Relevant Genes in‘Taishan Zaoxia’Apple[J]. ACTA HORTICULTURAE SINICA, 2012, 39(5): 845-852.

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The Regulation of 1-methylcyclopropene on Softening and Expression of Relevant Genes in‘Taishan Zaoxia’Apple

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