Cited by 276Plant biochemistry and biosynthesisPlant Surface Properties and TreatmentsPlant tissue culture and regeneration

Development and Fine Structure of the Glandular Trichomes of Artemisia annua L.

Duke, Stephen O., Paul, Rex N.·1993·International Journal of Plant Sciences

Abstract

Development of capitate glands on the leaves of annual wormwood (Artemisia annua L.) was monitored with scanning and transmission electron microscopy. Differentiation of foliar cells into gland cells began in the youngest leaf primordia. After differentiation into a 10-celled biseriate structure of two stalk cells, two basal cells, and three pairs of secretory cells, the cuticle of the six secretory cells separated from the cell walls to form a bilobed sac that eventually splits to release its contents. At every developmental stage, the cells of the the gland contained relatively little vacuolar volume. The secretory cells contained extensive endoplasmic reticulum. The plastids of each cell pair were different. At maturity, the apical cells contained proplastids or leucoplasts with only occasional thylakoids. The cell pair below the apical cell pair contained amorphous chloroplasts without starch grains. The basal cell pair contained proplastids or leucoplasts and the stalk cells contained chloroplasts. The stroma to thylakoid ratio in the secretory cell chloroplasts was high. Initially, osmiophilic product was observed most frequently associated with stacked thylakoids, plastid envelopes, and smooth endoplasmic reticulum, although it was associated with all cell membranes. Near the plasma membrane adjacent to cell walls bordering the subcuticular space, the cytoplasm was enriched in smooth endoplasmic reticulum containing osmiophilic material. The apical cell wall of the apical secretory cell pair was reticulated on the inner cytoplasmic side and contained osmiophilic staining on the cuticular side. During early senescence, osmiophilic product was commonly associated with outer mitochondrial membranes.

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Crossref · 10.1086/297096

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Authors
Duke, S. O., & Paul, R. N.
Affiliations
Agricultural Research Service (US)
Venue
International Journal of Plant Sciences
Published
1993-03
Volume
154
Issue
1
Pages
107-118
ISSN
  • 1058-5893 (ISSN-L)
  • 1537-5315
OpenAlex
W2092423868
Cited by
276
References
20
Citations by year
2026: 8 · 2025: 7 · 2024: 14 · 2023: 9 · 2022: 14 · 2021: 15 · 2020: 16 · 2019: 15 · 2018: 8 · 2017: 9 · 2016: 14 · 2015: 13 · 2014: 5 · 2013: 13 · 2012: 15
FWCI
0.77
Type
journal article
Language
en
Open access
closed
Locations
International Journal of Plant Sciences (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Plant biochemistry and biosynthesis
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Surface Properties and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Plant tissue culture and regeneration
Keywords
Artemisia annua, glandular trichomes, secretory cells, leaf development, chloroplast ultrastructure, thylakoids, endoplasmic reticulum, cuticle, cell wall ultrastructure, leaf senescence, mitochondrial outer membrane

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