Effect of light intensity and light/dark period on iridoids in Hedyotis diffusa
Publication in refereed journal

Times Cited
Altmetrics Information

Other information
AbstractThe purpose of this study was to clarify the effects of light intensity and light/dark period on the concentration of iridoids in the plant Hedyotis diffusa, which finds use in herbal medicine. To investigate the effect of light conditions, plants were grown in a chamber with factorial treatments comprising three light/dark periods (14/10 h, 19/5 h and 24/0 h) and two light intensities (photosynthetic photon flux density of 142 and 40μmol m-2 s-1). The epigeous dry weight was greatest with the treatments using high light intensity regardless of light period. The concentration of asperuloside (an iridoid) at 24/0 h was noticeably greater than that at 14/10 h or 19/5 h irrespective of light intensity. It was expected that the critical light period for the production of asperuloside would occur between 19 h and 24 h. The content of asperuloside was greatest at 24/0 h under high light intensity. Therefore, high light intensity and a 24/0-h light/dark period can produce high-quality H diffusa.
All Author(s) ListHigashiuchi K., Uno Y., Kuroki S., Hisano M., Mori T., Wong C.W., Leung P.C., Lau C.B.-S., Itoh H.
Journal nameEnvironmental Control in Biology
Detailed descriptionDOI: 10.2525/ecb.54.109.
Volume Number54
Issue Number2
PublisherJapanese Society of Agricultural, Biological and Environmental Engineers and Scientists (JASBEES)
Place of PublicationJapan
Pages109 - 116
LanguagesEnglish-United Kingdom
KeywordsAsperuloside, Environmental control, Hedyotis diffusa, Iridoid glycoside, Lighting condition, Plant factory

Last updated on 2021-22-09 at 23:46