title: Calmodulin-binding protein CBP60g functions as a negative regulator in Arabidopsis anthocyanin accumulation.
abstract: Anthocyanins, a kind of flavonoid, normally accumulate in the flowers and fruits and make them colorful. Anthocyanin accumulation is regulated via the different temporal and spatial expression of anthocyanin regulatory and biosynthetic genes. CBP60g, a calmodulin binding protein, has previously been shown to have a role in pathogen resistance, drought tolerance and ABA sensitivity. In this study, we found that CBP60g repressed anthocyanin accumulation induced by drought, sucrose and kinetin. The expression pattern of CBP60g was in accordance with the anthocyanin accumulation tissues. Real-time qPCR analysis revealed that the anthocyanin biosynthetic genes CHS, CHI and DFR, as well as two members of MBW complex, PAP1, a MYB transcription factor, and TT8, a bHLH transcription factor, were down regulated by CBP60g.
authors.affiliation: College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, P. R. China.
authors.forename: Bo
authors.initials: B
authors.lastname: Zou
authors.affiliation: College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, P. R. China.|Institute of Grassland Research, Chinese Academy of Agricultural Sciences, Hohhot, P. R. China.
authors.forename: Dongli
authors.initials: D
authors.lastname: Wan
authors.affiliation: College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, P. R. China.|Wulanchabu Center for Disease Control and Prevention, Jining, P. R. China.
authors.forename: Ruili
authors.initials: R
authors.lastname: Li
authors.affiliation: College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, P. R. China.|Department of Histology and Embryology, Baotou Medical College, Baotou, P. R. China.
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Han
authors.affiliation: College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, P. R. China.
authors.forename: Guojing
authors.initials: G
authors.lastname: Li
authors.affiliation: College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, P. R. China.
authors.forename: Ruigang
authors.initials: R
authors.lastname: Wang
mesh_terms: D000872:Anthocyanins / Q000378:metabolism*; D017360:Arabidopsis / Q000378:metabolism* / Q000502:physiology; D002148:Calmodulin-Binding Proteins / Q000378:metabolism*; D055864:Droughts; D000073718:Pancreatitis-Associated Proteins; D013312:Stress, Physiological
chemical_list: D000872:Anthocyanins; D002148:Calmodulin-Binding Proteins; D000073718:Pancreatitis-Associated Proteins; C000612141:REG3A protein, human