Transcriptome Changes Induced by Different Potassium Levels in Banana Roots

• Published in: Plants (Basel) Vol. 9; no. 1; p. 11
• Main Authors: He, Yingdui, Li, Ruimei, Lin, Fei, Xiong, Ying, Wang, Lixia, Wang, Bizun, Guo, Jianchun, Hu, Chengxiao
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 19-12-2019; MDPI
• Subjects: Amino acids; Chitinase; Fertilizers; Fruits; Gene expression; Gene regulation; Genes; Hsp70 protein; Kinases; Peroxidase; Plant growth; Plant resistance; Potash; Potassium; Potassium sulfate; Proteins; Roots; Signal transduction; Transcriptomes; banana; potassium; transcriptome; root
• ISSN: 2223-7747; 2223-7747
• DOI: 10.3390/plants9010011

Potassium plays an important role in enhancing plant resistance to biological and abiotic stresses and improving fruit quality. To study the effect of potassium nutrient levels on banana root growth and its regulation mechanism, four potassium concentrations were designed to treat banana roots from no potassium to high potassium. The results indicated that K2 (3 mmol/L K
SO
) treatment was a relatively normal potassium concentration for the growth of banana root, and too high or too low potassium concentration was not conducive to the growth of banana root. By comparing the transcriptome data in each treatment in pairs, 4454 differentially expressed genes were obtained. There were obvious differences in gene function enrichment in root systems treated with different concentrations of potassium. Six significant expression profiles (profile 0, 1, 2, 7, 9 and 13) were identified by STEM analysis. The hub genes were
, and
in the profile 0;
in profile 1;
in profile 7;
, chitinase and peroxidase in profile 9. Our results provide a comprehensive and systematic analysis of the gene regulation network in banana roots under different potassium stress.