Table 2. N-starvation-responsive miRNAs and their targets.

Class	Families	Members	Target gene families	Target genes	Potential roles	Other nutrient stimuli	References
NSS	miR158	a	Pentatricopeptide repeat (PPR)	At1g64100			[21], [22]
			Fucosyltransferase	At2g03210	Glycosylation
				At2g03220
	miR169	a–c,h–n	CAAT binding factor	At1g17590	Nitrogen homeostasis	-P	[12], [17], [25], [61]
				At1g54160
				At1g72830+
				At3g05690+
				At3g20910
				At5g06510+
				At5g12840+
	miR172	a,b	AP2 transcription factor	At5g60120	Flower development		[58]–[60]
				At4g36920
				At2g28550
				At2g28550
				At5g67180
	miR395	a–f	ATP sulfurylase	At3g22890+	Sulfate homeostasis	-S -P	[10], [12], [57]
			Sulfate transporter	At4g14680
				At5g43780+
				At5g10180
	miR397	a,b	Laccase	At2g29130+	Copper homeostasis	-Cu	[15], [56]
				At2g38080+
				At5g60020+
	miR398	b,c	Cu/Zn superoxide dismutase;	At1g08830+	Copper homeostasis	-Cu -P -K	[12], [15], [56]
			Cytochrome oxidase c;	At2g28190+
			Copper chaperone	At3g15640
				At1g12520
	miR399	a–f	Ubiquitin conjugase E2	At2g33770+	Phosphate homeostasis	-P	[11]
	miR408		Laccase; Plantacyanin	At2g30210+	Copper homeostasis	-Cu	[15]
				At5g05390−
				At5g07130+
				At2g02850+
	miR775		Fucosyltransferase	At1g53290	Glycosylation		[35]
	miR783		Protein of unknown	At4g01090	Unknown
	miR825		*	*	*
	miR827		E3 ligase with RING and SPX	At1g02860+	Nitrogen/Phosphorus metabolism	-P	[12], [27]
	miR841		Histone H2A	At2g38810	Unknown		[55]
				At4g13570
	miR849		CXC domain-containing protein	At4g29000	Unknown
	miR850		*	*	*
	miR851	3p	*	*	*
	miR854	a–d	Oligouridylate binding protein1b	At1g17370	Transcription regulation		[62]
	miR857		Laccase	At3g09220+	Copper homeostasis	-Cu	[15]
	miR861	5p	*	*	*
	miR863	3p	Transducin/WD40 repeat-like other RNA	At2g40360+	rRNA process		[23], [25]
				At4g13495	Unknown
	miR1886.3		Dentin sialophosphoprotein-related	At5g07970	Unknown
	miR1888		Haloacid dehalogenase-like hydrolase	At5g65140	Trehalose biosynthesis		[22]
			SAUR-like auxin-responsive protein	At2g16580	Response to auxin stimulus
	miR2111	a,b	Kelch repeat-containing F-box	At3g27150	Phosphate metabolism	-P	[12], [13]
NSI	miR156	h	SPL transcription factors	At1g53160	Vegetative phase change	-P -K	[12], [21], [54]
				At2g33810
				At3g15270
				At5g43270
				At1g27360
				At1g27370
				At1g69170
				At2g42200
				At3g57920
				At5g50570
	miR160	a–c	Auxin response factors	At2g28350−	Root/Flower development		[21], [43]
				At4g30080−
				At1g77850−
	miR171	b,c	SCL transcription factors	At2g45160−	Root development		[45]
				At3g60630−
				At4g00150−
	miR780.1		Na+/H+ antiporter family	At5g41610	Sodium ion export		[35]
				At4g33260
	miR826		Alkenyl hydroxalkyl producing 2	At4g03060−	Glucosinolate synthesis		[22], [55]
	miR829.1		*	*	*
	miR829.2		AP2 domain ethylene response	At5g18560	Root development		[52], [55]
	miR839		*	*	*
	miR842		Jacalin lectin family protein	At1g60130	Unknown		[22], [55]
				At1g57570
				At5g38550
	miR846		Jacalin lectin family protein	At5g49850	Unknown		[55]
				At2g25980
				At5g49870

Boldface letters indicate the previously validated targets. “*”indicates that no target was predicted. “+” and “−” indicate that up-regulation and down-regulation by N-starvation.