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Table 1 The top 20 KEGG pathways enriched by target genes of DE miRNA in 6 groups

From: High-throughput sequencing of small RNAs revealed the diversified cold-responsive pathways during cold stress in the wild banana (Musa itinerans)

pathway_term

group

pathway_term

group

pathway_term

group

Sulfur metabolism

Purine metabolism

Selenocompound metabolism

Citrate cycle

Sulfur relay system

Peroxisome

Endocytosis

ABC transporters

mRNA surveillance pathway

Cysteine and methionine metabolism

Nicotinate and nicotinamide metabolism

▲ ■

Glycerophospholipid metabolism

RNA polymerase

Ether lipid metabolism

Sphingolipid metabolism

Pyruvate metabolism

Carbon metabolism

Pyrimidine metabolism

Propanoate metabolism

Other glycan degradation

▲ ■

Aminoacyl-tRNA biosynthesis

Synthesis and degradation of ketone bodies

Sesquiterpenoid andtriterpenoid biosynthesis

▲ ■

Ribosome biogenesis in eukaryotes

Spliceosome

Oxidative phosphorylation

Carotenoid biosynthesis

RNA degradation

Biosynthesis of amino acids

Glycosaminoglycan degradation

SNARE interactions in vesicular transport

Protein export

Fructose and mannose metabolism

Fatty acid degradation

Plant-pathogen interaction

Lysine biosynthesis

Butanoate metabolism

Fatty acid biosynthesis

Steroid biosynthesis

Photosynthesis

RNA transport

Galactose metabolism

Alanine, aspartate and glutamate metabolism

Phenylalanine, tyrosine and tryptophan biosynthesis

Glyoxylate and dicarboxylate metabolism

Circadian rhythm - plant

Phosphatidylinositolsignaling system

  
  1. : L4 vs L0; : L4 vs L13; ▲: L4 vs L28; : L0 vs L13; : L0 vs L28; ■: L13 vs L28
  2. pathways played specific roles in response to chilling to 0 °C treated temperature; the RNA transport pathway occurred only in L13 vs L28, implying that the RNA transport was the evident difference from the normal growth to the critical growth temperature; the fatty acid biosynthesis pathway, as well as the steroid biosynthesis pathway, the alanine, aspartate and glutamate metabolism pathway, butanoate metabolism pathway occurred only in L4 vs L28, implying that 4 pathways specifically responded to chilling in the wild banana; and finally, the plant-pathogen interaction pathway and the phenylalanine, tyrosine and tryptophan biosynthesis pathway occurred only in L4 vs L13, implying that 2 specific pathways were the evident difference from the critical growth temperature to the chilling temperature, which might be very important for chilling responses. Some pathways occurred in 2–5 groups, such as the carotenoid biosynthesis pathways in L0 vs L28 and L4 vs L28, implying that the carotenoid biosynthesis was the evident difference of response between the normal growth temperature and the chilling and 0 °C treated temperature; the RNA degradation pathway and the protein export in pathway in L0 vs L28 and L13 vs L28, implying that the 13 °C and 0 °C, but not 4 °C, were likely the 2 main peaks of RNA degradation and protein export; the spliceosome pathway in L4 vs L13 and L0 vs L13, implying that the splicesome played important roles such as alternative splicing at the chilling and 0 °C treated temperatures; the glycerophospholipid metabolism in L4 vs L0, L4 vs L13, L0 vs L13, implying that both for chilling and for 0 °C treated temperature, the glycerophospholipid metabolism changed significantly; the endocytosis pathway in L13 vs L28, L4 vs L13, L4 vs L0 and L0 vs L28, implying that endocytosis occurred significantly during all the 3 cold-stress temperatures; only selenocompound metabolism pathway in 5 groups except for L4 vs L28 and the TCA cycle pathway in 5 groups except for L13 vs L28, implying that selenocompound metabolism and the TCA cycle played