Solute contributions to osmotic adjustment in leaf segments of wheat (Triticum aestivum L.) exposed to polyethylene glycol-induced water deficit.
Description
These source data relate to a manuscript submitted to Plant Environment Interactions of the title above. There were 4 experiments: 0 (preliminary to develop procedures), 1 (rate and time of PEG addition), 2 (additional Na+ and K+), and 3 (additional NO3-). Leaf water content, relative water content, osmotic potential, and osmotic adjustment were measured, along with concentrations of K+, Na+, Cl-, glycinebetaine, proline, total soluble sugars in leaf segments, and of K+, Na+ and Cl- in solution. Full details are provided in the manuscript, whose link will be provided on acceptance. In addition, two previous articles are also linked below. The first in the series is Nio et al. (2011) in Plant Physiology and Biochemistry, which reports previous experiments. The second, Nio et al. (2018) in Agriculture and Natural Resources, reports data from Experiment 1 only. This manuscript reports data from Experiments 2 and 3, and cites the previous articles.
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These were laboratory experiments with leaf segments exposed to nutrient solutions, to which different treatments were added, including Na+, K+, Cl-, NO3-, with and without PEG8000 (polyethylene glycol) as an osmotic solute to simulate water deficit. Samples were taken to measure osmotic adjustment and concentrations of inorganic and organic solutes, as listed above. Further details are in the manuscript.