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Table 1 Chemical Structures and comparison of 22 hit compounds demonstrated either inhibitory (I-) or stimulatory (S-) effects in pollen tube assay with respect to their effects in root growth assays

From: Novel small molecule modulators of plant growth and development identified by high-content screening with plant pollen

# Molecular Structure Compound Name Effect onrootgrowth, %
I-01 4‐({6‐[(3‐bromophenyl) amino]‐[1,2,5] oxadiazolo [3,4‐b] pyrazin‐5‐yl} amino) phenol 4,76 %, (p < 0.05)
I-02 (4E)‐1‐(3,4‐dichlorophenyl)‐4‐[(4‐hydroxy‐3‐iodo‐5‐methoxyphenyl) methylidene]‐3‐methyl‐4,5‐dihydro‐1H‐pyrazol‐5‐one 6,40 %, (p < 0.05)
I-03 (5E)-5-[(4-fluorophenyl) methylidene]-3-[(4-iodoanilino) methyl]-1,3-thiazolidine-2,4-dione 7,10 %, (p < 0.05)
I-04 2‐(4‐{[(2Z,5Z)‐4‐oxo‐3‐phenyl‐2‐(phenylimino)‐1,3‐thiazolidin‐5‐ylidene] methyl} phenoxy) acetic acid 7,36 %, (p < 0.05)
I-05 ethyl 4-[3-[(3-bromophenyl) methyl]-4-oxo-2-sulfanylidene-1H-quinazoline-7-carbonyl] piperazine-1-carboxylate 8,96 %, (p < 0.05)
I-06 3,4-dihydro-2H-quinolin-1-yl-[3-(4-phenylpiperazin-1-yl) sulfonylphenyl] methanone 9,60 %, (p < 0.05)
I-07 2-chloro-5-[(4Z)-4-[(3-methoxy-4-phenylmethoxyphenyl) methylidene]-3-methyl-5-oxopyrazol-1-yl] benzoic acid 9,92 %, (p < 0.05)
I-08 (4Z)-4-[(2-methoxy-1-naphthyl) methylene]-2-(4-methoxy-3-nitrophenyl)-1,3-oxazol-5 (4H)-one 11,52 %, (p < 0.05)
I-09 4-[(4E)-4-[(4,5-dimethoxy-2-nitrophenyl) methylidene]-3-methyl-5-oxopyrazol-1-yl] benzoic acid 12,16 %, (p < 0.05)
I-10 N-[(5Z)-5-[(3,4-dimethoxyphenyl) methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]-3-nitrobenzamide 14,19 %, (p < 0.05)
I-11 (4E)-2-(3,4-dichlorophenyl)-4-[(3,4-dimethoxyphenyl) methylidene]-5-methylpyrazol-3-one 14,41 %, (p < 0.05)
I-12 2-phenylethyl 7-(4-chlorophenyl)-4-(4-hydroxy-3-methoxyphenyl)-2-methyl-5-oxo-4,6,7,8-tetrahydro-1H-quinoline-3-carboxylate 16,33 %, (p < 0.05)
I-13 4-[[2-bromo-4-[(2,4,6-trioxo-1,3-diazinan-5-ylidene) methyl] phenoxy] methyl] benzoic acid 16,97 %, (p < 0.05)
I-14 methyl 4-[[(5E)-5-[(4-methylsulfanylphenyl) methylidene]-2,4-dioxo-1,3-thiazolidin-3-yl] methylamino] benzoate 17,70 %, (p < 0.05)
I-15 4-[4-(dimethylamino) phenyl]-8-{(E)-1-[4-(dimethylamino) phenyl] methylidene}-3,4,5,6,7,8-hexahydro-2 (1H)-quinazolinethione 19,74 %, (p < 0.05)
I-16 [3-(1,3-benzodioxol-5-yl)-2-methyl-4-oxo-6-propylchromen-7-yl] acetate 27,09 %, (p < 0.05)
I-17 2-(7,7-dimethyl-3-oxobicyclo [2.2.1] hept-2-yliden)-N-(4-methylphenyl)-1-hydrazinecarbothioamide 29,82 %, (p < 0.05)
I-18 2-(9H-xanthen-9-yl)-1H-indene-1,3 (2H)-dione 48,49 %, (p < 0.05)
I-19 2-{4-[(isopentyloxy) carbonyl] phenyl}-1,3-dioxo-5-isoindolinecarboxylic acid 49,20 %, (p < 0.05)
S-01 4-[bis (2-methoxyethyl) sulfamoyl]-N-[4-(4-nitrophenyl)-1,3-thiazol-2-yl] benzamide 119,09 %, (p < 0.05)
S-02 (3-Chloro-1-benzothiophen-2-yl) (10,11-dihydro-5H-dibenzo [b,f] azepin-5-yl) methanone 126,24 %, (p < 0.05)
S-03 N-[4-(4-methylphenyl)-1,3-thiazol-2-yl]-2-phenoxybenzamide 129,23 %, (p < 0.05)