Effects of quantum flux density of photosynthesis and chloroplast ultrastructure in tissue-cultured plantlets and seedlings of Liquidambar styraciflua L. towards improved acclimatization and field survival

Journal Article · Mon Jul 01 00:00:00 EDT 1985 · Plant Physiol.; (United States)

DOI:https://doi.org/10.1104/pp.78.3.637· OSTI ID:5818237

Lee, N; Wetzstein, H Y; Sommer, H E

Liquidambar styraciflua L. seedlings and tissue-cultured plantlets were grown under high, medium, or low quantum flux densities. Net photosynthesis, chlorophyll content, and chloroplast ultrastructure of leaves differentiated from these conditions were investigated. Seedling photosynthetic rates at light saturation were positively related to light pretreatments. Cultured plantlets under all light conditions had appreciably higher photosynthetic rates than noncultured seedlings. Chlorophyll in seedlings and plantlets was significantly higher in low light-treated plants. Seedling leaves had chloroplasts with abundant starch regardless of light pretreatment. In high light, starch granules were predominant and associated with disrupted granal structure. Low light seedling chloroplasts had smaller starch grains and well-formed grana. In contrast, tissue culture-differentiated leaves were devoid of starch; grana were well organized in higher quantum flux density treatments, but disorganized at low flux densities. 29 references, 7 figures, 1 table.

• Research Organization: Univ. of Georgia, Athens, GA (United States)
• OSTI ID: 5818237
• Journal Information: Plant Physiol.; (United States), Vol. 78:3
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
FLUX DENSITY
BIOLOGICAL EFFECTS
LEAVES
HISTOLOGY
SEEDLINGS
BIOLOGICAL ADAPTATION
CARBON DIOXIDE FIXATION
CHLOROPLASTS
PHOTOSYNTHESIS
PLANTS
STARCH
TISSUE CULTURES
VISIBLE RADIATION
CARBOHYDRATES
CELL CONSTITUENTS
CHEMICAL REACTIONS
ELECTROMAGNETIC RADIATION
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
POLYSACCHARIDES
RADIATIONS
REAGENTS
SACCHARIDES
SYNTHESIS
551000* - Physiological Systems