Recovery of Photosynthesis During Rewetting After Desiccation

If the protective mechanisms described in Sect. 3.2 do their job effectively, this should be reflected in rapid recovery of photosynthesis upon rehydration after desiccation. In fact, homoiochlorophylly of desiccation-tolerant cyanobacteria, in contrast to a poikilochlorophylly where chlorophyll is degraded during desiccation, should be a major advantage bestowing the capacity to quickly restore photosyn-thetic activity when water is available again. All authors having studied this observed...

Water Uptake at Water Shortage Role of Apoplast and of Composite Transport

Root anatomy underlies transport processes. Root hydraulics can be only interpreted with sufficient knowledge about the anatomy of roots. Root anatomy varies a lot depending on the way plants are grown and in response to the developmental state of roots (Steudle and Peterson 1998). For example, in maize, rates of uptake of water and that of nutrient ions were significantly reduced during drought stress (Stasovsky and Peterson 1993). To minimize water losses, roots developed a suberized...