Chapter 36 - 6 Flashcards
Dynamic Symplastic
What are some ways that the symplast and associated plamodesta can change during the life of a plan?
What are 2 function of phloem in addition to sugar transport?
What is the symplast?
Interconnection of all the cytoplasm.
How are plant cells connected?
Plasmodesmata. Allows for movement of sugar, water, and transportation.
How does transport direction change?
A baby leaf could be considered a sugar sink
An adult leaf can be considered a sugar source.
Transport can change during what?
Environmental distress such as drought.
Regulation of changes are directed by what?
Symplast. This includes changes in plasmodesmata, chemical signaling, and electrical symboling.
What are plasmodesmata?
Channels through cell walls that connect cytoplasm (symplast) of adjacent plant cells. Allow for cymplast continuity.
When can plasmodesmata change?
In response to turgor pressure, calcium levels, Ph, and development.
Phloem transports what?
Sugars
Phloem Sap
Proteins
RNA
Viral particles
Hormones
What is the function of protein in the phloem?
Communication of infection or damage.
What is electrical signaling in phloem?
A stimulus in one part of the plant can trigger an electrical signal in the phloem that affects another part of the plant. This can change transcription, hormone production, and rapid movements.
What is transcription?
Production of RNA thus production of protein.
