Table 1.

H₂S is involved in plant growth and development.

Development	Plant Species	H2S Doses	Effects	References
Germination	Arabidopsis thaliana	12 μmol L−1 NaHS	Activated AOX Mediated cyanide-resistant respiration pathway	[83]
	Arabidopsis thaliana	0.1 mmol L−1 NaHS	Maintained the protein stability of ABSCISIC ACID-INSENSITIVE 4	[1]
Root development	Peach (Prunus persica (L.) Batsch)	0.2 mmol L−1 NaHS	Increased the concentration of endogenous auxin Upregulated the expression of LATERAL ORGAN BOUNDARIES DOMAIN 16	[145]
	Cucumber (Cucumis sativus L.)	100 μmol L−1 NaHS	Promoted the occurrence of adventitious roots Regulated osmotic substance content (proline) and enhanced antioxidant ability	[106]
Photosynthesis	Wheat (Triticum aestivum L.)	200 µmol L−1 NaHS	Increased photosynthesis and carbohydrate metabolism	[109]
	Garlic (Allium sativum)	200 µmol L−1 NaHS	Increased the values of net photosynthetic rate, transpiration rate and stomatal conductance	[108]
Flowering	Heading Chinese cabbage (B. rapa L. syn. B. campestris L. ssp. chinensis Makino var. pekinensis (Rupr.) J. Cao et Sh. Cao)	100 µmol L−1 NaHS	Promoted plant flowering by weakening or eliminating the binding abilities of BraFLCs to downstream promoters via S-sulfhydration	[120]
Maturity and senescence	Strawberry (Fragaria chiloensis (L.) Mill.)	0.2 mmol L−1 NaHS	Maintained fruit firmness Delayed pectin degradation Downregulated the expression of polygalacturonase, pectate lyase, and expansin	[130]
	Goji berry (Lycium barbarum L.)	1.4 mmol L−1 NaHS	Improved postharvest quality Increased bioactive compounds accumulation Boosted antioxidant capacity	[128]

NaHS: sodium hydrosulfide; AOX: alternative oxidase.