How does plasmodesmata helps in intercellular transport?
Answers
In plant development, cell-to-cell signaling is mediated by mobile signals, including transcription factors and small RNA molecules. This communication is essential for growth and patterning. Short-range movement of signals occurs in the extracellular space via the apoplastic pathway or directly from cell-to-cell via the symplastic pathway. Symplastic transport is mediated by plant specific structures called plasmodesmata, which are plasma membrane-lined pores that traverse the cell walls of adjacent cells thus connecting their cytoplasms.
Answer:
Cells outside the vasculature are symplasmically connected by plasmodesmata (PD), plasma membrane‐lined channels with a diameter of c. 50 nm. PD allow for transport of photoassimilates and signalling molecules via the cytoplasmic sleeve, connecting cells in different tissues.