Abstract
To clarify whether the structure of sporopollenin varies during pollen development FTIR and 13 C NMR spectroscopic analyses of Tulipa and Cucurbita sporopollenin from three different developmental stages were carried out. The spectra of sporopollenin obtained from an early, a middle postmeiotic and the mature stage have been compared. The assumption that sporopollenin mainly consists of long chain aliphatics with varying amounts of aromatics is corroberated by our results. Only slight changes in sporopollenin structure could be recognized during pollen wall development of Cucurbita maxima. In contrast to this the spectra of Tulipa sporopollenin of the three developmental stages exhibited significant differences concerning the aliphatic and aromatic components.
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Claims 4
Claim · model-written summary
Tulipa sporopollenin mainly consists of long chain aliphatics with varying aromatics.
- Outcome
- long chain aliphatics with varying amounts of aromaticse0
TulipaNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The assumption that sporopollenin mainly consists of long chain aliphatics with varying amounts of aromatics is corroberated by our results.”
e1“Tulipa and Cucurbita sporopollenin”
Claim · model-written summary
Cucurbita sporopollenin mainly consists of long chain aliphatics with varying aromatics.
- Outcome
- long chain aliphatics with varying amounts of aromaticse0
CucurbitaNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The assumption that sporopollenin mainly consists of long chain aliphatics with varying amounts of aromatics is corroberated by our results.”
e1“Tulipa and Cucurbita sporopollenin”
Claim · model-written summary
Cucurbita maxima sporopollenin structure changed only slightly during pollen wall development.
- Taxon
- Cucurbita maxima
Cucurbita maximae0 - Outcome
- sporopollenin structuree0
- Direction
- slight changese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only slight changes in sporopollenin structure could be recognized during pollen wall development of Cucurbita maxima.”
Claim · model-written summary
Tulipa sporopollenin spectra differed significantly in aliphatic and aromatic components across three developmental stages.
- Organ / stage
- three developmental stagese0
- Outcome
- aliphatic and aromatic componentse0
- Direction
- significant differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast to this the spectra of Tulipa sporopollenin of the three developmental stages exhibited significant differences concerning the aliphatic and aromatic components.”