Table 2.

Targeted negative regulation relationship in miRNA-mRNA.

Group	miRNA_ID	miRNA_FC	Style	FDR	Target Gene_ID	Gene_FC	Style	FDR	Tair	Symbol	Description
F5 vs. D5	chr17_37159_star	9.23	up	4.32 × 10−3	Potri.001G375700	0.43	down	2.44 × 10−2	AT3G15050	IQD10	IQ-domain 10
	ptc-miR169t	0.07	down	4.38 × 10−5	Potri.006G053500	2.87	up	4.10 × 10−3	AT3G14020	NF-YA6	nuclear factor Y, subunit A6
	ptc-miR395b	0.17	down	1.53 × 10−2	Potri.010G081200	1.53	up	2.96 × 10−2	AT3G22890	APS1	ATP sulfurylase 1
	ptc-miR395d	0.19	down	1.95 × 10−2	Potri.010G081200	1.53	up	2.96 × 10−2	AT3G22890	APS1	ATP sulfurylase 1
	ptc-miR395f	0.17	down	1.51 × 10−2	Potri.010G081200	1.53	up	2.96 × 10−2	AT3G22890	APS1	ATP sulfurylase 1
	ptc-miR395h	0.17	down	1.51 × 10−2	Potri.010G081200	1.53	up	2.96 × 10−2	AT3G22890	APS1	ATP sulfurylase 1
	ptc-miR395j	0.20	down	3.07 × 10−2	Potri.010G081200	1.53	up	2.96 × 10−2	AT3G22890	APS1	ATP sulfurylase 1
	ptc-miR395k	0.18	down	1.90 × 10−2	Potri.010G081200	1.53	up	2.96 × 10−2	AT3G22890	APS1	ATP sulfurylase 1
	chr5_13131_mature	7.76	up	1.51 × 10−2	Potri.012G083100	0.41	down	2.78 × 10−2	AT4G10650	AT4G10650	P-loop containing nucleoside triphosphate hydrolases superfamily protein
S5 vs. D5	chr7_17886_mature	5.46	up	2.14 × 10−2	Potri.014G185300	0.29	down	4.25 × 10−2	AT5G42710	AT5G42710	unknown protein
	chr17_37159_star	7.81	up	1.66 × 10−2	Potri.007G053400	0.11	down	3.71 × 10−5	AT5G67400	RHS19	root hair specific 19
	chr17_37159_star	7.81	up	1.66 × 10−2	Potri.010G239300	0.63	down	3.89 × 10−2	AT4G39200	AT4G39200	Ribosomal protein S25 family protein
	chr3_8559_star	0.14	down	3.84 × 10−2	Potri.005G119700	4.96	up	2.07 × 10−2	AT2G18180	AT2G18180	Sec14p-like phosphatidylinositol transfer family protein
	chr5_13131_mature	10.70	up	3.03 × 10−3	Potri.012G083100	0.34	down	4.87 × 10−3	AT4G10650	AT4G10650	P-loop containing nucleoside triphosphate hydrolases superfamily protein

FC: fold change; FDR: false discovery rate; D5, F5, S5 represent diploid, triploid-F, and triploid-S plants in the 5th leaves in the morning, respectively. ptc- means the miRNAs detecked in Populus trichocarpa miRNA database. Chl_ means the novel miRNA for Populus cathayan.