Open AccessEvolutionary Profiling of Group II Pyridoxal‐Phosphate‐Dependent Decarboxylases Suggests Expansion and Functional Diversification of Histidine Decarboxylases in Tomato
Author(s) -
Kumar Rahul,
Jiwani Gitanjali,
Pareek Amit,
SravanKumar Thula,
Khurana Ashima,
Sharma Arun K.
Publication year - 2016
Publication title -
the plant genome
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.403
H-Index - 41
ISSN - 1940-3372
DOI - 10.3835/plantgenome2015.07.0057
Subject(s) - biology , histidine decarboxylase , glutamate decarboxylase , ripening , biochemistry , gene , gene family , pepper , solanaceae , pyridoxal , aromatic l amino acid decarboxylase , enzyme , histidine , gene expression , botany , horticulture
Pyridoxal phosphate (PLP)‐dependent enzymes are one of the most important enzymes involved in plant N metabolism. Here, we explored the evolution of group II PLP‐dependent decarboxylases (PLP_deC), including aromatic L‐amino acid decarboxylase, glutamate decarboxylase, and histidine decarboxylase in the plant lineage. Gene identification analysis revealed a higher number of genes encoding PLP_deC in higher plants than in lower plants. Expression profiling of PLP_deC orthologs and syntelogs in Arabidopsis thaliana (L.) Heynh., pepper ( Capsicum annuum L.), and tomato ( Solanum lycopersicum L.) pointed toward conserved as well as distinct roles in developmental processes such as fruit maturation and ripening and abiotic stress responses. We further characterized a putative promoter of tomato ripening‐associated gene ( SlHDC10 ) operating in a complex regulatory circuit. Our analysis provides a firm basis for further in‐depth exploration of the PLP_deC gene family, particularly in the economically important Solanaceae family.