| Abstract: | In leaves of resurrection plants dried intact, free prolineincreased in nine species and remained unchanged or declinedin two other tolerant species. Infiltration of proline into hydrated resurrection leaves oftwo species (a relatively high accumulator of proline, Borya,and low accumulator, Myrothamnus) prior to dehydration did notimprove the cells' survival rate, and in some cases caused adecrease in survival. These data indicate that the extreme drought tolerance of resurrectionplants is not related per se to proline levels. |
