Genome-wide identification and expression profiling of TALE gene family in banana under abiotic stresses and Foc 4 infection
Keywords:
Banana, Fusarium oxysporum, Foc 4, Genome-wide, MaTALE1, PEGAbstract
Three Amino Acid Loop Extension (TALE) is a member of the homeobox gene group. In addition to being crucial for growth and development, the TALE gene family is also critical for controlling how plants react to environmental stressors. Here, we used the banana genome database to extract 47 MaTALE genes. The evolutionary analysis grouped the sequences into seven subclades, named STM, KNOX-II, and BELL-I to BELL-V. Analysis of MaTALE promoters revealed that their cis-acting elements are associated primarily with hormone (especially ABA) and stress responsiveness. The STRING database further suggested that MaTALE proteins could work in tandem with other important TFs that play a significant role in plant growth. The expression analysis under drought, cold, and Foc 4 revealed their potential involvement in stress response. Exogenous ABA treatment significantly induced the expression of MaTALE1/14/20 genes. The transient expression assay showed that MaTALE1 resides in the nucleus. Our data offer a valuable resource for developing integrated management strategies against abiotic (drought, cold) and biotic (Foc 4) stresses affecting bananas in Southern China.
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