leaf senescence 2 source–sink interaction 7440-44-0 1 Carbon 1 Chlorophyll 1 Crop yield 1 Editorial 1 mehr ... Journal Article 1 N762921K75 1 Nitrogen 1 Research Support, Non-U.S. Gov't 1 Review 1 chloroplast 1 endogenous signals 1 exogenous signals 1 grain filling 1 molecular mechanism 1 multi-layered regulatory networks 1 omics 1 plant senescence 1 shoot:root ratio 1 systems modeling 1 weniger ...