Plants
Programmed cell death in plants has a number of molecular similarities to animal apoptosis, but it also has differences, notably the presence of a cell wall and the lack of an immune system which removes the pieces of the dead cell. Instead of an immune response, the dying cell synthesizes substances to break itself down and places them in a vacuole which ruptures as the cell dies. Whether this whole process resembles animal apoptosis closely enough to warrant using the name apoptosis (as opposed to the more general programmed cell death) is unclear.
Read more about this topic: Apoptosis
Famous quotes containing the word plants:
“When the
Marne flowed by the plants nodded
And above the glistering Gila
A sunset as beautiful as the Athabasca
Stammered. The Zambezi chimed. The Oxus
Flowed somewhere.”
—John Ashbery (b. 1927)
“Brute force crushes many plants. Yet the plants rise again. The Pyramids will not last a moment compared with the daisy. And before Buddha or Jesus spoke the nightingale sang, and long after the words of Jesus and Buddha are gone into oblivion the nightingale still will sing. Because it is neither preaching nor commanding nor urging. It is just singing. And in the beginning was not a Word, but a chirrup.”
—D.H. (David Herbert)
“Luxurious Man, to bring his Vice in use,
Did after him the World seduce:
And from the fields the Flow’rs and Plants allure,”
—Andrew Marvell (1621–1678)