biostudies-literatureUnknown4Rawat NHuanglongbing (HLB) is the most destructive bacterial disease of citrus worldwide. While most citrus varieties are susceptible to HLB, <i>Poncirus trifoliata,</i> a close relative of <i>Citrus</i>, and some of its hybrids with <i>Citrus</i> are tolerant to HLB. No specific HLB tolerance genes have been identified in <i>P. trifoliata</i> but recent studies have shown that constitutive disease resistance <i>(CDR)</i> genes were expressed at much higher levels in HLB-tolerant <i>Poncirus</i> hybrids and the expression of <i>CDR</i> genes was modulated by <i>Candidatus</i> Liberibacter asiaticus (<i>C</i>Las), the pathogen of HLB. The current study was undertaken to mine and characterize the <i>CDR</i> gene family in <i>Citrus</i> and <i>Poncirus</i> and to understand its association with HLB Horticulture research17064https://www.ebi.ac.uk/biostudies/studies/S-EPMC5686287biostudies-literatureGenome resequencing and transcriptome profiling reveal structural diversity and expression patterns of constitutive disease resistance genes in Huanglongbing-tolerant <i>Poncirus trifoliata</i> and its hybrids.PMC5686287Albrecht UDuan YPGmitter FGDu DRawat NZhang YYu QHuang MDeng ZKumar BBowman KDfalseGenome resequencing and transcriptome profiling reveal structural diversity and expression patterns of constitutive disease resistance genes in Huanglongbing-tolerant <i>Poncirus trifoliata</i> and its hybrids.Huanglongbing (HLB) is the most destructive bacterial disease of citrus worldwide. While most citrus varieties are susceptible to HLB, <i>Poncirus trifoliata,</i> a close relative of <i>Citrus</i>, and some of its hybrids with <i>Citrus</i> are tolerant to HLB. No specific HLB tolerance genes have been identified in <i>P. trifoliata</i> but recent studies have shown that constitutive disease resistance <i>(CDR)</i> genes were expressed at much higher levels in HLB-tolerant <i>Poncirus</i> hybrids and the expression of <i>CDR</i> genes was modulated by <i>Candidatus</i> Liberibacter asiaticus (<i>C</i>Las), the pathogen of HLB. The current study was undertaken to mine and characterize the <i>CDR</i> gene family in <i>Citrus</i> and <i>Poncirus</i> and to understand its association with HLB 2017-01-01T00:00:00Z20172026-04-29T06:12:20.293Z2019-03-27T03:01:55ZS-EPMC56862872915231010.1038/hortres.2017.64