Induced synthesis of caffeoylserotonin in pepper fruits upon infection by the anthracnose fungus, Colletotrichum gloeosporioides |
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Authors: | Kiyoon Kang Kyungjin Lee Atsushi Ishihara Sangkyu Park Young Soon Kim Kyoungwhan Back |
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Affiliation: | 1. Department of Biotechnology, Interdisciplinary Program for Bioenergy and Biomaterials of Graduate School, Biotechnology Research Institute, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju 500-757, Republic of Korea;2. Faculty of Agriculture, Tottori University, Koyama, Tottori 680-8553, Japan |
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Abstract: | Caffeoylserotonin (CaS) is a serotonin derivative that belongs to the family of phenylpropanoid amides, but has not previously been identified in plants. In this study, pepper fruits challenged with the anthracnose fungus, Colletotrichum gloeosporioides, were found to synthesize CaS, which accumulated at concentrations of up to 2.3 μg/g fresh weight. The induction of CaS was accompanied by the upregulation of both 4-coumarate-CoA ligase (4CL) and serotonin N-hydroxycinnamoyl transferase (SHT) in unripe pepper fruits. However, no induction of SHT and 4CL was observed in ripe pepper fruits consistent with the lower level of CaS production. |
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Keywords: | Caffeic acid Caffeoylserotonin Capsicum annuum 4-Coumarate-CoA ligase Serotonin |
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