Genome-Wide Identification and Expression Analysis of PLT Gene Family in Peanut(Arachis hypogaea L.)
The PLT family is a class of transcription factors specific to the plant,which play important roles in growth and development of embryos,stem cells,meristematic tissues and organs.In this study,12 PLT family genes distributed on 11 chromosomes were identified from the genome of cultivated peanut by bioin-formatics technology.Most AhPLT proteins contained two conserved AP2 structural domains,coding 439 to 713 amino acids,and were predicted to be localized in nucleoli or chloroplasts.The AhPLT genes had diverse structures of short exons with the number of exons between 5 and 8,and had different conserved motifs distrib-uted among different family members.Cis-acting elements related to hormones such as growth hormone,gib-berellin and jasmonic acid existed in the promoter region of AhPLT family members.Results of qRT-PCR showed that AhPLT1-B and AhPLT5-B had the highest expression level in roots and seeds,and responsed dif-ferently to IAA,6-BA,and GA3.The expression of AhPLT5-B was up-regulated the most significantly by 6-BA,and the expression of AhPLT5-B showed a first increasing and then decreasing pattern under the regula-tion of 6-BA,IAA and GA3.These results could provide a basis for research of PLT gene function in peanut.
万方数据
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