Effect of Light and Reductones on Differentiation of Pleurotus ostreatus

Seung-Rock Lee; Woo-Jeong Joo; Yong-Un Baek; Inyoung Kim; Kee-Oh Chay; Seung-Hyun Cho; Seung-Jae Lee; Sa-Ouk Kang

doi:10.1007/s12275-011-0507-5

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Research Support, Non-U.S. Gov't
Effect of Light and Reductones on Differentiation of Pleurotus ostreatus: Seung-Rock Lee ¹, Woo-Jeong Joo ², Yong-Un Baek ², Inyoung Kim ¹, Kee-Oh Chay ¹, Seung-Hyun Cho ², Seung-Jae Lee ³, Sa-Ouk Kang ²; Journal of Microbiology 2011;49(1):71-77
DOI: https://doi.org/10.1007/s12275-011-0507-5
Published online: March 3, 2011

¹Department of Biochemistry, Research Center for Aging and Geriatrics, Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea, ²Laboratory of Biophysics, School of Biological Sciences, and Institute of Microbiology, Seoul National University, Seoul 151-742, Republic of Korea, ³Division of Molecular and Life Science, School of Interdisciplinary Bioscience and Bioengineering, and World Class University Information Technology Convergence Engineering, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Republic of Korea¹Department of Biochemistry, Research Center for Aging and Geriatrics, Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 501-190, Republic of Korea, ²Laboratory of Biophysics, School of Biological Sciences, and Institute of Microbiology, Seoul National University, Seoul 151-742, Republic of Korea, ³Division of Molecular and Life Science, School of Interdisciplinary Bioscience and Bioengineering, and World Class University Information Technology Convergence Engineering, Pohang University of Science and Technology, Pohang, Kyungbuk 790-784, Republic of Korea

Corresponding author: Sa-Ouk Kang , Tel: +82-2-880-6703,

Received: 9 December 2010 • Accepted: 25 January 2011

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Abstract

Vegetative mycelia of Pleurotus ostreatus were differentiated into primordia and subsequently into fruit bodies in synthetic sucrose-asparagine medium when exposed to light at low temperature. During photomorphogenesis, L-ascorbic acid-like substances called reductones were produced. L-Ascorbic acid, D-erythroascorbic acid, 5-O-(α-D-glucopyranosyl)-D-erythroascorbic acid, 5-O-(α-D-xylopyranosyl)-D-erythroascorbic acid, 5-methyl-5-O-(α-D-glucopyranosyl)-D-erythroascorbic acid and 5-methyl-5-O-(α-D-xylopyranosyl)-D-erythroascorbic acid were accumulated initially in the illuminated mycelia before the initiation of fruiting. The content of glycosides of erythroascorbic acid and their methylated compounds increased again in the primordia and the fruit bodies. Exogenous L-ascorbic acid induced the formation of primordia from the mycelia in the dark in a dose-dependent manner. Thus, this suggests that these reductones might play a role in mediating the light stimulus in photomorphogenesis.

Keywords: reductone; light; ascorbate oxidase; photomorphogenesis; Pleurotus ostreatus

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Effect of Light and Reductones on Differentiation of Pleurotus ostreatus

J. Microbiol. 2011;49(1):71-77. Published online March 3, 2011

DOI: https://doi.org/10.1007/s12275-011-0507-5

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