Whole seedling soluble sugar content decreased under stressed condition, how to explain this? and ratio of coleoptile to radicle in soluble sugar decreased as well? Any answer is welcome.
As well known soluble sugars are among the osmolytes accumulated by the plants to cope with stress (saline and water stress). so under stress conditions the plant will accumulate more osmoytes including soluble sugars in the cells in contact with external environment (soil) which are radicle cells and therefore soluble sugars concentration will be higher in radicle cells and consequently the ratio of coleoptile to radicle in soluble sugar decreased under stressed condition?
Dear Liu,
The question is useless if we do not have in mind what particular environmental factors caused "stressed condition". As coleoptile is mentioned, I suppose these are cereals. Also, are we talking about etiolated or light-grown seedlings? In the later case, downregulation of photosynthetic response might be involved. In etiolated state, soluble sugars can only be provided from seed-stored starch reserves, so, amylase might be involved. An so on...
Dear Yang Liu,
a paper that may help:
Journal of Experimental Botany, Vol. 57, No. 3, pp. 449–459, 2006
"Involvement of soluble sugars in reactive oxygen species
balance and responses to oxidative stress in plants"
By:
Ivan Coue´ e*, Ce´ cile Sulmon, Gwenola Gouesbet and Abdelhak El Amrani
Best regards,
Maria Alexou
- Badges
- Science topic
- Similar topics
- Geoscience
- Asia
- India