The ability of the root system of the poikilohydric plant Craterostigma plantagineum to survive @entity2700 was investigated. The data presented here reveal that the root system is capable of surviving @entity2700 , but shortly after rehydration the root system senesces. Two weeks after rehydration the growth of a complete new root system is initiated. During @entity2700 @entity969 accumulates from 36 to a maximum of 111 micromol g-1 DW in the roots. It is suggested that the accumulation of @entity969 protects the root system during @entity2700 . There are major stores of stachyose in the roots of Craterostigma (making up over 40% of the dry weight of the tissue) and during @entity2700 these stores are metabolized. It is suggested that these stachyose stores act as @entity1735 reserves for the synthesis of @entity969 . However, over 350 micromol g-1 DW @entity52825 is metabolized in the roots, which is well in excess of that required for the accumulation of @entity969 observed. It is likely that the stachyose reserves in the root system are translocated to other regions of the plant to support @entity1735 metabolism during @entity2700 of the tissue. During rehydration, the stachyose reserves return to their original level within 96 h. There is no change in the elevated @entity969 content of the roots over this period. Thus the roots maintain the protective properties of @entity969 much longer than they are needed. The maintenance of high @entity969 contents in rehydrating roots is discussed as a possible survival strategy against recurrent desiccation events.

Investigation into the ability of roots of the poikilohydric plant Craterostigma plantagineum to survive XXXX stress.

@entity969 :: ('MESH:D013395', 'Chemical') :: ['sucrose'] @entity2700 :: ('MESH:D003681', 'Disease') :: ['dehydration'] @entity1735 :: ('CHEBI:16646', 'Chemical') :: ['carbohydrate'] @entity52825 :: ('MESH:C005695', 'Chemical') :: ['stachyose']
@entity2700 :: (MESH:D003681,Disease) :: ['dehydration']
