Updated inventory, evolutionary and expression analyses of G (PDR) type ABC transporter genes of rice
Gupta BB, Selter LL, Baranwal VK, Arora D, Mishra SK, Sirohi P, Poonia AK, Chaudhary R, Kumar R, Krattinger SG, Chauhan H (2019) Updated inventory, evolutionary and expression analyses of G (PDR) type ABC transporter genes of rice. Plant Physiology and Biochemistry 142: 429-439.
ABC transporters constitute the largest family of transporter proteins
in living organisms and divided into eight subfamilies, from A-H. ABCG
members, specific to plants and fungi, belong to subfamily G. In this
study, we provide updated inventory, detailed account of phylogeny, gene
structure characteristics, and expression profiling during reproductive
development, abiotic and biotic stresses of members of ABCG gene family
in rice along with reannotation and cloning of FL-cDNA of OsABCG50/PDR23.
We observed that of the 22 ABCGs/PDRs, four genes evolved as a result
of gene duplication events and their expression pattern changed after
duplication. Analysis of expression revealed seed and developmental
stage preferential expression of five ABCG/PDR members. Transcript
levels of eight ABCGs/PDRs were affected by abiotic and biotic stresses. Expression of seven ABCG/PDR
genes was also altered by hormonal elicitors. The modulated expression
is nicely correlated with the presence of tissue/stress specific cis-acting elements present in putative promoter region.