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- W4283273677 endingPage "1042" @default.
- W4283273677 startingPage "1031" @default.
- W4283273677 abstract "Plants require water and nutrients for survival, although the effects of their availabilities on plant fitness differ amongst species. Genome size variation, within and across species, is suspected to influence plant water and nutrient requirements, but little is known about how variations in these resources concurrently affect plant fitness based on genome size. We examined how genome size variation between autopolyploid cytotypes influences plant morphological and physiological traits, and whether cytotype-specific trait responses differ based on water and/or nutrient availability. Diploid and autotetraploid Solidago gigantea (Giant Goldenrod) were grown in a greenhouse under four soil water:N+P treatments (L:L, L:H, H:L, H:H), and stomata characteristics (size, density), growth (above- and belowground biomass, R/S), and physiological (Anet , E, WUE) responses were measured. Resource availabilities and cytotype identity influenced some plant responses but their effects were independent of each other. Plants grown in high-water and nutrient treatments were larger, plants grown in low-water or high-nutrient treatments had higher WUE but lower E, and Anet and E rates decreased as plants aged. Autotetraploids also had larger and fewer stomata, higher biomass and larger Anet than diploids. Nutrient and water availability could influence intra- and interspecific competitive outcomes. Although S. gigantea cytotypes were not differentially affected by resource treatments, genome size may influence cytogeographic range patterning and population establishment likelihood. For instance, the larger size of autotetraploid S. gigantea might render them more competitive for resources and niche space than diploids." @default.
- W4283273677 created "2022-06-23" @default.
- W4283273677 creator A5002409460 @default.
- W4283273677 creator A5061111812 @default.
- W4283273677 date "2022-07-13" @default.
- W4283273677 modified "2023-10-05" @default.
- W4283273677 title "Do water and soil nutrient scarcities differentially impact the performance of diploid and tetraploid <i>Solidago gigantea</i> (Giant Goldenrod, Asteraceae)?" @default.
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