Claim · model-written summary
Proembryo ribosome density increased while lipid body number decreased.
- Taxon
- sunflower
Helianthus annuust0 - Outcome
- ribosome densitye0
- Direction
- increasese0
Verbatim
e0“In the proembryo, ribosome density increases and lipid bodies decrease in number.”
t0“sunflower (Helianthus annuus)”
Title
Hua Yan; Hong-Yuan Yang; William A. Jensen Canadian Journal of Botany 1991. doi:10.1139/b91-027
Other claims from this paper (11)
- Observation Young sunflower embryo sacs had walls completely surrounding the egg, synergids, and central cell.
- Observation By embryo maturity, chalazal walls of the egg and synergids had disappeared, creating membrane contact.
- Observation The central cell had membrane contact with the egg and synergids.
- Observation The chalazal and lateral central cell walls became considerably thicker.
- Observation The synergid toward the placenta degenerated before pollen tube entry.
- Observation After fertilization, a wall formed over the chalazal zygote and persistent synergid.
- Mechanism Endosperm appeared to contribute substantial wall material.
- Observation The wall over the chalazal zygote was incomplete when the zygote divided.
- Observation Lipid bodies decreased in number in the proembryo.
- Observation The suspensory cell had autophagic vacuoles encircling some organelles.
- Mechanism The authors interpret egg, synergids, and central cell as one functional female germ unit.