In silico analysis of drought responsive transposons and transcription factors in Solanum tuberosum L.

İngilizce (OpenAlex)

Potato (Solanum tuberosum L.) is the most important non-grainfood crop and is essential for global food security. Drought is one of the major abiotic stress factors resulting in huge yield loss in the production of crops and similarly, it negativelly affects the tuberization, tuber yield and tuber quality of potato. Transposable elements (TEs) account for a large portion of the genome in many eukaryotic species. Several studies have identified the molecular mechanism that cause the activation of TEs under stress. Stresses and environmental challenges, in particular, are known to alter the expression or stimulate the transposition of mobile elements in plants. Transcription of these stress-responsive genes is largely controlled by transcription factors (TFs). A number of transcription factors playing an essential role in drought tolerance of plants have been identified in the past few years. In this work, a subset of drought responsive TE families and TFs in potato at tuber bulking stage was defined, based on genome-wide transposon homology and annotation. Our results indicated that, the read numbers for TE subfamilies yielded different distributions between DNA and RNA transposons. In addition, many TFs such as bHLH, WRKY, NAC, AP2/ERF may have important functions in regulation of drought tolerance in potato. Identification of TEs and TFs which are taking part in stress can offer useful information for functional genomics and designing novel breeding strategies for developing stress tolerant plants.