Cells division in Salt gland completed
Secretory phase beginning
Early secretion by formation of outer and middle pair of secretory
cells on ingrowth penetrating the cytoplasm in the walls =
“Protuberances”.
Protuberances are highly developed in the apical wall
Protuberance involved in the short distance flux solutes
Formation of a dual feature: Wall protuberance-Lining plasma lemma
Fast fluxing of solutes
Fluxing of a large amount of solutes
Emergence of leaves: In spring needing of water and nutrient are covered by transfer cells in the conductive tissue;
Germination of seeds: mobilization of nutrients from endosperm/cotyledon via transfer cells;
Survival of halophytes: Salt removal is performed through salt
gland /wall protuberance;
Pollinisation of flowers: Production of insect-attracting nectar : nectary’s bear numerous protuberances in their cell walls.
Accumulation of Golgi
vesicle converging into
microtubules
Wall protuberance
= Transfert cell
Fig. 14.6
Salt gland of Tamarix aphylla
in secretory phases adapted from an explication of Bosabalidis (2010)
414
K. Bencherif et al.