Greater resistance to flooding of seedlings of Ulmus laevis than Ulmus minor is related to the maintenance of a more positive carbon balance

Breeding and scientific advances in the fight against Dutch elm disease: Will they allow the use of elms in forest restoration?

“…Xanthogaleruca luteola (Santini and Faccoli 2015). Hypoxic stress by flooding similarly reduces growth and survival, depending on the degree of flood tolerance of Ulmus species (Newsome et al 1982;Li et al 2015). Within the macrohabitat selected for plantations (typically floodplains and riverside areas), the distance to the water course and the extent of seasonal variation in water table depth must be taken into account.…”

Different ways to die in a changing world: Consequences of climate change for tree species performance and survival through an ecophysiological perspective

“…Reductions in A rates of flooded plants have been widely documented (Kreuzwieser & Rennenberg, ; Li et al, ; Liu et al, ; Martínez‐Alcántara et al, ), especially for sensitive species (Argus, Colmer, & Grierson, ), and appear to be primarily related to both stomatal and nonstomatal limitations (Kreuzwieser & Rennenberg, ). The latter include reduced concentrations of photosynthetic pigments (Ojeda, Schaffer, & Davies, ), decreased Rubisco content and activity (Herrera, ), and accumulation of soluble sugar in leaves, which may induce negative feedback on photosynthesis (Ferner et al, ; Kreuzwieser & Rennenberg, ).…”

“…The latter include reduced concentrations of photosynthetic pigments (Ojeda, Schaffer, & Davies, ), decreased Rubisco content and activity (Herrera, ), and accumulation of soluble sugar in leaves, which may induce negative feedback on photosynthesis (Ferner et al, ; Kreuzwieser & Rennenberg, ). In contrast, stomatal limitations are largely associated with reductions in root hydraulic conductivity (Else, Coupland, Dutton, & Jackson, ; Else, Davies, Malone, & Jackson, ; Islam & Macdonald, ; Li et al, ; Zhang & Davies, ) (Figure b). The occurrence and extent of these hydraulic limitations appear to depend on the combination of damage, lower growth rates, and suberization of the root system, in association with lower expression and abundance of aquaporins (Islam & Macdonald, ; Kreuzwieser & Rennenberg, ; Li et al, ).…”

“…In contrast, stomatal limitations are largely associated with reductions in root hydraulic conductivity (Else, Coupland, Dutton, & Jackson, ; Else, Davies, Malone, & Jackson, ; Islam & Macdonald, ; Li et al, ; Zhang & Davies, ) (Figure b). The occurrence and extent of these hydraulic limitations appear to depend on the combination of damage, lower growth rates, and suberization of the root system, in association with lower expression and abundance of aquaporins (Islam & Macdonald, ; Kreuzwieser & Rennenberg, ; Li et al, ). As a result, decreased root hydraulic conductivity can limit water and nutrient absorption and, paradoxically, induce shoot desiccation, which reduces leaf water potential and, consequently, g s (Kreuzwieser & Rennenberg, ; Li et al, ).…”

“…The occurrence and extent of these hydraulic limitations appear to depend on the combination of damage, lower growth rates, and suberization of the root system, in association with lower expression and abundance of aquaporins (Islam & Macdonald, ; Kreuzwieser & Rennenberg, ; Li et al, ). As a result, decreased root hydraulic conductivity can limit water and nutrient absorption and, paradoxically, induce shoot desiccation, which reduces leaf water potential and, consequently, g s (Kreuzwieser & Rennenberg, ; Li et al, ). In addition to hydraulic components, the transport of signaling molecules from roots to leaves [e.g., abscisic acid (ABA)] and changes in the pH of phloem sap also appear to be related to reductions in g s in flooded plants (Herrera, ; Kreuzwieser & Rennenberg, ; Li et al, ).…”