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Physiological responses, yield and medicinal substance (andrographolide, AP1) accumulation of Andrographis paniculata (Burm. f) in response to plant density under controlled environmental conditions
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Document Title
Physiological responses, yield and medicinal substance (andrographolide, AP1) accumulation of Andrographis paniculata (Burm. f) in response to plant density under controlled environmental conditions
Author
Chutimanukul P, Mosaleeyanon K, Janta S, Toojinda T, Darwell CT, Wanichananan P
Name from Authors Collection
Scopus Author ID
57194333576
Scopus Author ID
6506599737
Affiliations
National Science & Technology Development Agency - Thailand; National Center Genetic Engineering & Biotechnology (BIOTEC)
Type
Article
Source Title
PLOS ONE
ISSN
1932-6203
Year
2022
Volume
17
Open Access
gold, Green Published
Publisher
PUBLIC LIBRARY SCIENCE
DOI
10.1371/journal.pone.0272520
Format
Abstract
Agricultural practice in adjusting planting density and harvest date are important factors for plant development and crop improvement, reaching maximum yields and enhancing the production of secondary metabolites. However, it is unclear as to the optimal planting densities during mass production that encourage consistent, high yield secondary metabolite content. For this, controlled environment, crop production facilities such as plant factories with artificial lighting (PFAL) offer opportunity to enhance quality and stabilize production of herbal plants. This study assessed the effect of plant density and harvest date on physiological responses, yield and andrographolide (AP1) content in Andrographis paniculata (Andrographis) using hydroponic conditions in a PFAL system. Andrographis, harvested at vegetative stage (30 days after transplanting; 30 DAT) and initial stage of flowering (60 DAT) exhibited no significant differences in growth parameters or andrographolide accumulation according to planting densities. Harvest time at flowering stage (90 DAT) showed the highest photosynthetic rates at a planting density of 15 plants m(-2). Highest yield, number of leaves, and Andrographolide (AP1) content (mg per gram of DW in m(2)) were achieved at a more moderate planting density (30 plants m(-2)). Finally, five out of seventeen indices of leaf reflectance reveal high correlation (r= 0.8 to 1.0 and r= -0.8 to -1.0, P<0.01) with AP1 content. These results suggest that a planting density of 30 plants m(-2) and harvest time of 90 DAT provide optimal growing condition under the hydroponic PFAL system.
Industrial Classification
Knowledge Taxonomy Level 1
Knowledge Taxonomy Level 2
Knowledge Taxonomy Level 3
Funding Sponsor
National Center for Genetic Engineering and Biotechnology Technology Development Agency, Thailand [P2050861]
License
CC BY
Rights
Authors
Publication Source
WOS