Physiological Implications of Hydrogen Sulfide in Plants: Pleasant Exploration behind Its Unpleasant Odour

Table 1

Enzymes and coding genes related to H₂S generation in Arabidopsis.

Substrate	Enzyme	Cellular localization	Locus	Reference
L-Cys	AtLCD	Cytoplasm	At3g62130	[16]
	AtNFS1/Nifs1	Mitochondria	At5g65720	[27]
	AtNFS2/Nifs2	Plastid	At1g08490	[28]
	DES1	Cytoplasm	At5g28030	[24]
	OASTL-A1	Cytoplasm	At4g14880	[25]
	OASTL-A2	Cytoplasm	At3g22460	[30]
	OASTL-B	Plastid	At2g43750	[26]
	OASTL-C	Mitochondria	At3g59760	[27]
D-Cys	AtDCD1	Mitochondria	At1g48420	[17]
L/D-Cys	AtDCD2	Mitochondria	At3g26115	[18]
Unknown	PLP-dependent transferase superfamily	Chloroplast	At5g26600	[15]
Unknown	NAC domain containing protein 1	Unknown	At1g01010	[15]

At: Arabidopsis thaliana, Cys: cysteine, DCD: D-Cys desulfhydrase, DES: desulfhydrase, LCD: L-Cys desulfhydrase, NAC: N-acetyl-L-cysteine, NFS: nitrogenase Fe-S cluster, OASTL: O-acetyl-L-serine(thiol)lyase, and PLP: pyridoxal 5′-phosphate.