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Title:   Author  item
                                            MA, CHAO - US Department Of Agriculture (USDA)item
                                            MEIR, SHIMON - Volcani Center (ARO)item
                                            XIAO, LANGTAO - Hunan Agricultural Universityitem
                                            TONG, JIANHUA - Hunan Agricultural Universityitem
                                            LIU, QING - Hunan Agricultural Universityitem
                                            REID, MICHAEL - University Of Californiaitem
                                            Jiang, Cai-Zhong
  Submitted to: Plant Physiology
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 12/30/2014
                                    Publication  Date: 1/5/2015
                                    Publication URL: http://www.plantphysiology.org/content/167/3/844.fullCitation: Ma, C., Meir, S., Xiao, L., Tong, J., Liu, Q., Reid, M.S., Jiang, C. 2015. A knotted1-like homeobox protein regulates abscission in tomato by modulating the auxin pathway. Plant Physiology. 167(3):844-853.Interpretive Summary:
                                Technical Abstract: KD1, a gene encoding a KNOTTED1-LIKE HOMEOBOX transcription factor is known to be involved, in tomato, in ontogeny of the compound leaf. KD1 is also highly expressed in both leaf and flower abscission zones. Reducing abundance of transcripts of this gene in tomato, using both virus induced gene silencing and stable transformation with a silencing construct driven under an abscission-specific promoter, resulted in a striking retardation of pedicel and petiole abscission. In addition, Pts, a semi-dominant KD1 mutant showed earlier pedicel and petiole abscission. cDNA microarray and RT-PCR analysis indicated that regulation of abscission by KD1 was based on the responses of auxin signaling and transport genes. Auxin content and a DR5::GUS auxin reporter assay confirmed that KD1 modulated the auxin level and response in the abscission zone.


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