Cytokinin oxidase/dehydrogenase OsCKX11 coordinates source and sink relationship in rice by simultaneous regulation of leaf senescence and grain number

• Published in: Plant biotechnology journal Vol. 19; no. 2; pp. 335 - 350
• Main Authors: Zhang, Wei, Peng, Kaixuan, Cui, Fubin, Wang, Dongling, Zhao, Jiangzhe, Zhang, Yanjun, Yu, Ningning, Wang, Yuyang, Zeng, Dali, Wang, Yonghong, Cheng, Zhukuan, Zhang, Kewei
• Format: Journal Article
• Language: English
• Published: England John Wiley & Sons, Inc 01.02.2021; John Wiley and Sons Inc
• Subjects: Abscisic Acid; Agricultural production; Biosynthesis; biotechnology; Cell division; Cereals; CRISPR; Crop yield; cytokinin; cytokinin oxidase/dehydrogenase; Cytokinins; Dehydrogenase; Dehydrogenases; Edible Grain; Enzymes; Gene Expression Regulation, Plant; Genes; Genetic engineering; Genotype & phenotype; Grain; grain number; leaf senescence; Leaves; Metabolism; Mutants; Mutation; Oryza - genetics; Oryza sativa; Oxidase; oxidoreductases; Oxidoreductases - genetics; Photosynthesis; Plant breeding; Plant Leaves; Rice; rice (Oryza sativa L.); Senescence; Zeatin; rice (Oryza sativa L.); cytokinin; cytokinin oxidase/dehydrogenase; grain number; abscisic acid; crop yield; leaf senescence

Summary The flag leaf and grain belong to the source and sink, respectively, of cereals, and both have a bearing on final yield. Premature leaf senescence significantly reduces the photosynthetic rate and severely lowers crop yield. Cytokinins play important roles in leaf senescence and determine gr...