Cited by 55Plant biochemistry and biosynthesisSesquiterpenes and Asteraceae StudiesEssential Oils and Antimicrobial Activity

Morphogenetic variation for artemisinin and volatile oil in Artemisia annua

Gupta, Shiv K, Singh, Poorinima, Bajpai, Pratima, Ram, Govind, Singh, Digvijay, Gupta, Madan M, Jain, Dharm C, Khanuja, Suman P +1 more·2002·Industrial Crops and Products

Abstract

Seeds of Artemisia annua cv. Jeevanraksha were sown in the nursery in the middle of December in 1997, 1998 and 1999. About 1-month old seedlings were transplanted in the field having sandy loam soil in the subtropical agroclimate of Lucknow, India. The plant tops were sampled fortnightly for leaves during vegetative phase and for leaves and capitula during post-flowering stages for the estimation of artemisinin content. The A. annua plants continued to grow logarithmically in height from the end of rosette phase at about 9 weeks to the pre-flowering stage at about 44 weeks age and attained a height of 3.4 m. The artemisinin content of the leaves was observed to be high from 0.8 to 1.0% in May and 0.8 to 1.3% through late July to late September. Subsequently, plants entered the reproductive phase. While in the vegetative phase, 90% of artemisinin was in the leaves, in the mature plants, about 30% of the artemisinin was in the leaves and 40% was in capitula. In the vegetative stage plants the younger leaves born on the tops of secondary and higher order branches were richer in the artemisinin than the older leaves. The tops of A. annua plants in their vegetative growth phase possessed low levels of essential oil at about 0.2% as compared to 1.2% of essential oil in the full blooming stage plants. The extraction of artemisinin from leaves is more economic than from the mixture of leaves and capitula on account of higher levels of lipids in the extract of the latter. Since A. annua plants grew logarithmically all through vegetative phase from March to late September and artemisinin content in the leaves was high in May and from late July to late September, it is suggested that under the subtropical agroclimates, A. annua crops may be harvested more than once. The ratooning is expected to reduce losses in artemisinin yield resulting from senescence caused dropping of old leaves and favour preponderance of young leaves found richer in artemisinin content.

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Crossref · 10.1016/s0926-6690(02)00049-3

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Authors
Gupta, S. K., Singh, P., Bajpai, P., Ram, G., Singh, D., Gupta, M. M., Jain, D. C., Khanuja, S. P., & Kumar, S.
Affiliations
  • Central Institute of Medicinal and Aromatic Plants (IN)
  • Jawaharlal Nehru University (IN)
Corresponding author
Kumar, Sushil
Venue
Industrial Crops and Products
Publisher
Elsevier BV
Published
2002-11
Volume
16
Issue
3
Pages
217-224
ISSN
0926-6690 (ISSN-L)
OpenAlex
W2066110078
Cited by
55
References
12
Citations by year
2024: 1 · 2023: 2 · 2022: 4 · 2019: 5 · 2018: 4 · 2016: 5 · 2015: 3 · 2014: 3 · 2013: 4 · 2012: 3
FWCI
0.46
Type
journal article
Language
en
Open access
closed
Locations
Industrial Crops and Products (publishedVersion)
Funders
Department of Biotechnology, Ministry of Science and Technology, India
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Plant biochemistry and biosynthesis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Sesquiterpenes and Asteraceae Studies
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Essential Oils and Antimicrobial Activity
Keywords
Artemisia annua, artemisinin, essential oils, vegetative growth, capitulum, leaf senescence, ratoon cropping, harvest time, artemisinin yield

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