biostudies-literatureShen JConstruction of Beijing Science and Technology Innovation and Service Capacity in Top Subjects111 ProjectNational Key Research and Development ProgramNational Natural Science Foundation of China17105-17114https://www.ebi.ac.uk/biostudies/studies/S-EPMC6708385biostudies-literatureUnknown116(34)Shoot branching is an important agronomic trait that directly determines plant architecture and affects crop productivity. To promote crop yield and quality, axillary branches need to be manually removed during cucumber production for fresh market and thus are undesirable. Auxin is well known as the primary signal imposing for apical dominance and acts as a repressor for lateral bud outgrowth indirectly. The <i>TEOSINTE BRANCHED1</i>/<i>CYCLOIDEA/PCF</i> (<i>TCP</i>) family gene <i>BRANCHED1</i> (<i>BRC1</i>) has been shown to be the central integrator for multiple environmental and developmental factors that functions locally to inhibit shoot branching. However, the direct molecular link between auxin and BRC1 remains elusive. Here we find that cucumber <i>BRANCHED1</i> (<i>CsBRC1</i>) isProceedings of the National Academy of Sciences of the United States of AmericaCsBRC1 inhibits axillary bud outgrowth by directly repressing the auxin efflux carrier <i>CsPIN3</i> in cucumber.PMC670838531572132317723152018YFD1000800B17043CEFF-PXM2019_014207_000032Gu RShen JGe DZhang YChe GZhang XLiu RWang ZSong WCheng ZfalseCsBRC1 inhibits axillary bud outgrowth by directly repressing the auxin efflux carrier <i>CsPIN3</i> in cucumber.Shoot branching is an important agronomic trait that directly determines plant architecture and affects crop productivity. To promote crop yield and quality, axillary branches need to be manually removed during cucumber production for fresh market and thus are undesirable. Auxin is well known as the primary signal imposing for apical dominance and acts as a repressor for lateral bud outgrowth indirectly. The <i>TEOSINTE BRANCHED1</i>/<i>CYCLOIDEA/PCF</i> (<i>TCP</i>) family gene <i>BRANCHED1</i> (<i>BRC1</i>) has been shown to be the central integrator for multiple environmental and developmental factors that functions locally to inhibit shoot branching. However, the direct molecular link between auxin and BRC1 remains elusive. Here we find that cucumber <i>BRANCHED1</i> (<i>CsBRC1</i>) is2019-01-01T00:00:00Z2019 Aug2026-04-29T04:03:50.325Z2021-02-21T03:46:30ZS-EPMC67083853139130610.1073/pnas.1907968116