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Agronomy 2018, 8(8), 141;

Transcriptomic Analysis of Banana in Response to Phosphorus Starvation Stress

Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Institute of Tropical Agriculture and Forestry, Hainan University, No.58 Renmin Avenue, Haikou 570228, China
Author to whom correspondence should be addressed.
Received: 7 July 2018 / Revised: 30 July 2018 / Accepted: 2 August 2018 / Published: 7 August 2018
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Bananas are an important part of the diets of millions of people around the globe. Low P absorption and use efficiency significantly restrict banana yields. To further explore the molecular mechanisms of P regulation in banana plants, we used RNA sequencing-based transcriptomic analysis for banana plants subjected to Pi deficit stress for 60 days. We detected 1900 significantly differentially expressed genes (DEGs) in aboveground plant parts and 7398 DEGs in root parts under low P stress. Gene ontology (GO) classification analysis showed that 156,291 GO terms belonging to molecular functions, 53,114 GO terms belonging to cellular components, and 228,544 GO terms belonging to biological processes were enriched in the aboveground and root components. A number of DEGs involved in energy metabolism-related processes, signal transduction, control of rhizosphere P activation, and Pi mobilization were found, which were confirmed by quantitative reverse-transcription Polymerase Chain Reaction (qRT-PCR) analysis. At the transcriptomic level, we detected 13 DEGs from different organs and with different functions in the time-course response to phosphorus deficiency stress. These DEGs may include some key genes that regulate the phosphorus network, increasing our understanding of the molecular mechanism of Pi homeostasis in banana. These findings will also help develop biotechnologies to create a variant of banana with more effective Pi absorption and utilization. View Full-Text
Keywords: banana; phosphorus deficiency stress; RNA-seq analysis; differentially expressed genes banana; phosphorus deficiency stress; RNA-seq analysis; differentially expressed genes

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Xiong, R.; Tang, H.; Xu, M.; Zeng, C.-B.; Peng, Y.; He, R.; Yan, Z.; Qi, Z.; Cheng, Y. Transcriptomic Analysis of Banana in Response to Phosphorus Starvation Stress. Agronomy 2018, 8, 141.

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