Early ripening events caused by bud mutation in Beni Shogun apple

  • Q. L. Dong
  • Z. Y. Yan
  • Z. Liu
  • Y. X. Yao
Research Papers


Beni Shogun (BS) apple (Malus) is the sport of Yataka, which is the sport of Fuji (FJ). Its fruits ripen about 20 days earlier and produce an earlier and larger burst of ethylene than FJ fruits. Expression levels of genes associated with ethylene synthesis (MdACS1, MdACS2, MdACS3, MdACS5A, and MdACO1-MdACO4), signal reception (MdETR2, MdETR5, and MdERS) and transduction (MdCTR, MdEIN2A, and MdEIN2B) were compared between BS and FJ fruits from 90 days after bloom (DAB) to ripening. Generally, expression of all tested genes in BS was promoted, and their expression bursts preceded those in FJ. In addition, profiles of several important quality traits were compared between BS and FJ fruits from 90 DAB to ripening. Skin coloration, fruit softening, and starch hydrolysis were affected by the BS mutation, while the loss of acidity, sugar accumulation, and average fruit weight were not regulated and partially regulated by the mutation, respectively. For aroma, some volatiles were regulated by the mutation, while others were not. Generally, esters were positively regulated by the mutation. Moreover, BS fruit exhibited a lower capacity to scavenge ROS than FJ fruit.


Malus bud mutation early ripening ethylene expression analysis quality traits 



ACC oxidase


ACC synthase


Beni Shogun




days after bloom




superoxide dismutase


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Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  1. 1.State Key Laboratory of Crop Biology, National Research Center for Apple Engineering and Technology, College of Horticulture Science and EngineeringShandong Agricultural UniversityTai-An, ShandongChina
  2. 2.Liaoning Institute of Fruit Tree ScienceXiong-Yue, LiaoningChina

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