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Background The plant-specific homeodomain-leucine zipper class IV (HD-ZIP IV) gene family has been involved in the regulation of epidermal development. Results Fifteen genes coding for HD-ZIP IV proteins were identified (NtHD-ZIP-IV-1 to NtHD-ZIP-IV-15) based on the genome of N. tabacum. Four major domains (HD, ZIP, SAD and START) were present in these proteins. Tissue expression pattern analysis...
Leaf senescence is a developmentally programmed event, but the initiation and progression of leaf senescence are affected by a range of plant hormones including abscisic acid (ABA), ethylene and methyl jasmonate (MeJA). To investigate plant hormone crosstalk during leaf senescence, hormone-induced senescence phenotypes were analyzed in three leaf senescence mutants [ore1 (oresara1), ore3 and ore9]...
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