biostudies-literatureUnknown15Gao B<h4>Introduction</h4>This study explores how elevated CO₂ concentration may alter the source-sink dynamics in rice by providing additional carbon for photosynthesis, thereby affecting nutrient absorption and distribution.<h4>Methods</h4>A free-air CO₂ enrichment experiment was conducted on a japonica cultivar Wuyunjing 27 in 2017 and 2018 growing seasons. The plants were exposed to ambient and elevated CO₂ level (increased by 200 μmol·mol-1) and two source-sink manipulation treatments (control with no leaf cutting and cutting off the top three leaves at heading).<h4>Results</h4>The elevated CO₂ significantly increased the above-ground biomass and the straw non-structural carbohydrate concentration by an average of 19.3% and 12.5%, respectively. SFrontiers in plant science1450893https://www.ebi.ac.uk/biostudies/studies/S-EPMC11608955biostudies-literatureImpacts of elevated CO&lt;sub&gt;2&lt;/sub&gt; and partial defoliation on mineral element composition in rice.PMC11608955Zhou MGao BHu SZhu JYang LJing LWang YSun XWang KfalseImpacts of elevated CO&lt;sub&gt;2&lt;/sub&gt; and partial defoliation on mineral element composition in rice.<h4>Introduction</h4>This study explores how elevated CO₂ concentration may alter the source-sink dynamics in rice by providing additional carbon for photosynthesis, thereby affecting nutrient absorption and distribution.<h4>Methods</h4>A free-air CO₂ enrichment experiment was conducted on a japonica cultivar Wuyunjing 27 in 2017 and 2018 growing seasons. The plants were exposed to ambient and elevated CO₂ level (increased by 200 μmol·mol-1) and two source-sink manipulation treatments (control with no leaf cutting and cutting off the top three leaves at heading).<h4>Results</h4>The elevated CO₂ significantly increased the above-ground biomass and the straw non-structural carbohydrate concentration by an average of 19.3% and 12.5%, respectively. S2024-01-01T00:00:00Z20242025-04-04T00:21:32.049Z2025-04-04T00:21:32.049ZS-EPMC116089553962424710.3389/fpls.2024.1450893