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Synonyms
flavone synthase ii, fnsii, fns ii, cyp93g1, dvfns, cyp93b2, osfnsii, sbfnsii, afns2, tfns5,
more
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eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
liquiritigenin + [reduced NADPH-hemoprotein reductase] + O2
7,4'-dihydroxyflavone + [oxidized NADPH-hemoprotein reductase] + 2 H2O
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
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-
-
?
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
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-
-
?
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
D3U591
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-
-
?
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
D3U591
the enzymatic reaction of FNS II is stereoselective, favouring the (S)-enantiomer over the (R)-enantiomer
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-
?
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
the enzyme channels flavanones to the biosynthesis of tricin O-linked conjugates
-
-
?
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
-
?
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
the enzyme is involved in the biosynthesis of flavones from flavanones
-
-
?
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
liquiritigenin + [reduced NADPH-hemoprotein reductase] + O2
7,4'-dihydroxyflavone + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
liquiritigenin + [reduced NADPH-hemoprotein reductase] + O2
7,4'-dihydroxyflavone + [oxidized NADPH-hemoprotein reductase] + 2 H2O
D3U591
-
-
-
?
liquiritigenin + [reduced NADPH-hemoprotein reductase] + O2
7,4'-dihydroxyflavone + [oxidized NADPH-hemoprotein reductase] + 2 H2O
D3U591
the enzymatic reaction of FNS II is stereoselective, favouring the (S)-enantiomer over the (R)-enantiomer
-
-
?
liquiritigenin + [reduced NADPH-hemoprotein reductase] + O2
7,4'-dihydroxyflavone + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
D3U591
-
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
D3U591
the enzymatic reaction of FNS II is stereoselective, favouring the (S)-enantiomer over the (R)-enantiomer
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
the enzyme channels flavanones to the biosynthesis of tricin O-linked conjugates
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
the enzyme is involved in the biosynthesis of flavones from flavanones
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
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eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
liquiritigenin + [reduced NADPH-hemoprotein reductase] + O2
7,4'-dihydroxyflavone + [oxidized NADPH-hemoprotein reductase] + 2 H2O
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
D3U591
-
-
-
?
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
the enzyme channels flavanones to the biosynthesis of tricin O-linked conjugates
-
-
?
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
the enzyme is involved in the biosynthesis of flavones from flavanones
-
-
?
eriodictyol + [reduced NADPH-hemoprotein reductase] + O2
luteolin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
liquiritigenin + [reduced NADPH-hemoprotein reductase] + O2
7,4'-dihydroxyflavone + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
liquiritigenin + [reduced NADPH-hemoprotein reductase] + O2
7,4'-dihydroxyflavone + [oxidized NADPH-hemoprotein reductase] + 2 H2O
D3U591
-
-
-
?
liquiritigenin + [reduced NADPH-hemoprotein reductase] + O2
7,4'-dihydroxyflavone + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
D3U591
-
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
the enzyme channels flavanones to the biosynthesis of tricin O-linked conjugates
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
the enzyme is involved in the biosynthesis of flavones from flavanones
-
-
?
naringenin + [reduced NADPH-hemoprotein reductase] + O2
apigenin + [oxidized NADPH-hemoprotein reductase] + 2 H2O
-
-
-
?
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evolution
D3U591
phylogenetic analyses of the subfamily of plant CYP93B enzymes indicate the evolution of a gene encoding a flavone synthase which originally catalyzes the direct conversion of flavanones into flavones, via early gene duplication into a less efficient enzyme with an altered catalytic mechanism. Ultimately, this allows the evolution of the legume-specific isoflavonoid synthase activity
malfunction
the lignin of the fnsII mutant is completely devoid of tricin, indicating that FNSII activity is essential for the deposition of tricin-bound lignin in rice cell walls. The mutant also shows substantially reduced lignin content with decreased syringyl/guaiacyl lignin unit composition. The loss of tricin in the mutant lignin appears to be partially compensated by incorporating naringenin, which is a preferred substrate of OsFNSII. The fnsII mutant is further revealed to have enhanced enzymatic saccharification efficiency, suggesting that the cell wall recalcitrance of grass biomass may be reduced through the manipulation of the flavonoid monomer supply for lignification
metabolism
the dark or light brown color variation in injured leaves of sorghums is associated with the gene expression of flavone synthase II and flavonoid 3'-hydroxylase. Flavone synthase II pathway is activated to synthesize flavones (apigenin and luteolin) and the expression level of flavonoid 3'-hydroxylase changes the balance of apigenin and luteolin. Expression of flavone synthase II is related to the synthesis of flavones (apigenin and luteolin) and the expression level of flavonoid 3'-hydroxylase is related to the balance of apigenin and luteolin. Expression of flavone synthase II and flavonoid 3'-hydroxylase is thus associated with dark or light brown coloration in tan-colored injured leaves of sorghum. Expression of both flavone synthase II and flavonoid 3'-hydroxylase leads to the synthesis of apigenin and luteolin in Sorghum bicolor #7
metabolism
expression of FNSII is related to the synthesis of flavones (apigenin and luteolin). The enzyme is associated with colors in tan-colored injured leaves in sorghum
metabolism
the enzyme channels flavanones to the biosynthesis of tricin O-linked conjugates
metabolism
-
the enzyme is involved in the biosynthesis of flavones from flavanones
metabolism
the enzyme is involved in the flavonoid pathway and is responsible for flavone formation
metabolism
the enzyme plays an essential role in tricin lignification in the cell wall
metabolism
the suppression of flavone synthesis is caused by post-transcriptional gene silencing (PTGS) of FNS II (DvFNS), leading to the high accumulation of both total anthocyanins and cyanidin-based anthocyanins
metabolism
-
the dark or light brown color variation in injured leaves of sorghums is associated with the gene expression of flavone synthase II and flavonoid 3'-hydroxylase. Flavone synthase II pathway is activated to synthesize flavones (apigenin and luteolin) and the expression level of flavonoid 3'-hydroxylase changes the balance of apigenin and luteolin. Expression of flavone synthase II is related to the synthesis of flavones (apigenin and luteolin) and the expression level of flavonoid 3'-hydroxylase is related to the balance of apigenin and luteolin. Expression of flavone synthase II and flavonoid 3'-hydroxylase is thus associated with dark or light brown coloration in tan-colored injured leaves of sorghum. Expression of both flavone synthase II and flavonoid 3'-hydroxylase leads to the synthesis of apigenin and luteolin in Sorghum bicolor #7
-
metabolism
-
expression of FNSII is related to the synthesis of flavones (apigenin and luteolin). The enzyme is associated with colors in tan-colored injured leaves in sorghum
-
metabolism
-
the dark or light brown color variation in injured leaves of sorghums is associated with the gene expression of flavone synthase II and flavonoid 3'-hydroxylase. Flavone synthase II pathway is activated to synthesize flavones (apigenin and luteolin) and the expression level of flavonoid 3'-hydroxylase changes the balance of apigenin and luteolin. Expression of flavone synthase II is related to the synthesis of flavones (apigenin and luteolin) and the expression level of flavonoid 3'-hydroxylase is related to the balance of apigenin and luteolin. Expression of flavone synthase II and flavonoid 3'-hydroxylase is thus associated with dark or light brown coloration in tan-colored injured leaves of sorghum. Expression of both flavone synthase II and flavonoid 3'-hydroxylase leads to the synthesis of apigenin and luteolin in Sorghum bicolor #7
-
metabolism
-
expression of FNSII is related to the synthesis of flavones (apigenin and luteolin). The enzyme is associated with colors in tan-colored injured leaves in sorghum
-
physiological function
expression of flavone synthase II and flavonoid 3'-monooxygenase is associated with dark or light brown coloration in tan-colored injured leaves of sorghum
physiological function
-
the enzyme plays an important role in torenia flower color
physiological function
-
expression of flavone synthase II and flavonoid 3'-monooxygenase is associated with dark or light brown coloration in tan-colored injured leaves of sorghum
-
physiological function
-
expression of flavone synthase II and flavonoid 3'-monooxygenase is associated with dark or light brown coloration in tan-colored injured leaves of sorghum
-
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differentially expressed genes before and after cutting stress are identified by using RNA sequencing. Expression of only flavone synthase II (FNSII) leads to the synthesis of apigenin in sorghum M36001 with light brown injured leaves. Expression of FNSII is related to the synthesis of flavones (apigenin and luteolin)
induced by coronalon and by 12-oxo-phytodienoic acid. Jasmonic acid at a concentration of 0.1 mM is a comparatively weak inductor
D3U591
Tobacco streak virus (strain dahlia) suppresses posttranscriptional gene silencing of flavone synthase II in black dahlia cultivars and causes a drastic flower color change
differentially expressed genes before and after cutting stress are identified by using RNA sequencing. Expression of only flavone synthase II (FNSII) leads to the synthesis of apigenin in sorghum M36001 with light brown injured leaves. Expression of FNSII is related to the synthesis of flavones (apigenin and luteolin)
differentially expressed genes before and after cutting stress are identified by using RNA sequencing. Expression of only flavone synthase II (FNSII) leads to the synthesis of apigenin in sorghum M36001 with light brown injured leaves. Expression of FNSII is related to the synthesis of flavones (apigenin and luteolin)
-
-
differentially expressed genes before and after cutting stress are identified by using RNA sequencing. Expression of only flavone synthase II (FNSII) leads to the synthesis of apigenin in sorghum M36001 with light brown injured leaves. Expression of FNSII is related to the synthesis of flavones (apigenin and luteolin)
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-
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Mizuno, H.; Yazawa, T.; Kasuga, S.; Sawada, Y.; Kanamori, H.; Ogo, Y.; Hirai, M.Y.; Matsumoto, T.; Kawahigashi, H.
Expression of flavone synthase II and flavonoid 3-hydroxylase is associated with color Variation in tan-colored injured leaves of Sorghum
Front. Plant Sci.
7
1718
2016
Sorghum bicolor (C5X6I4), Sorghum bicolor L. Moench (C5X6I4), Sorghum bicolor M36001 (C5X6I4)
brenda
Deguchi, A.; Tatsuzawa, F.; Hosokawa, M.; Doi, M.; Ohno, S.
Tobacco streak virus (strain dahlia) suppresses post-transcriptional gene silencing of flavone synthase II in black dahlia cultivars and causes a drastic flower color change
Planta
242
663-675
2015
Dahlia pinnata (G8Z369)
brenda
Du, Y.; Chu, H.; Wang, M.; Chu, I.K.; Lo, C.
Identification of flavone phytoalexins and a pathogen-inducible flavone synthase II gene (SbFNSII) in sorghum
J. Exp. Bot.
61
983-994
2010
Sorghum bicolor
brenda
Martens, S.; Forkmann, G.
Genetic control of flavone synthase II activity in flowers of Gerbera hybrids
Phytochemistry
49
1953-1958
1998
Gerbera hybrid cultivar (Q9XGT9)
-
brenda
Fliegmann, J.; Furtwaengler, K.; Malterer, G.; Cantarello, C.; Schueler, G.; Ebel, J.; Mithoefer, A.
Flavone synthase II (CYP93B16) from soybean (Glycine max L.)
Phytochemistry
71
508-514
2010
Glycine max (D3U591), Glycine max
brenda
Akashi, T.; Fukuchi-Mizutani, M.; Aoki, T.; Ueyama, Y.; Yonekura-Sakakibara, K.; Tanaka, Y.; Kusumi, T.; Ayabe, S.
Molecular cloning and biochemical characterization of a novel cytochrome P450, flavone synthase II, that catalyzes direct conversion of flavanones to flavones
Plant Cell Physiol.
40
1182-1186
1999
Torenia fournieri (Q9SSX4), Antirrhinum majus (Q9SSX5), Antirrhinum majus
brenda
Martens, S.; Forkmann, G.
Cloning and expression of flavone synthase II from Gerbera hybrids
Plant J.
20
611-618
1999
Gerbera hybrid cultivar (Q9XGT9)
brenda
Lam, P.Y.; Zhu, F.Y.; Chan, W.L.; Liu, H.; Lo, C.
Cytochrome P450 93G1 is a flavone synthase II that channels flavanones to the biosynthesis of tricin O-linked conjugates in rice
Plant Physiol.
165
1315-1327
2014
Oryza sativa (Q0JFI2), Oryza sativa
brenda
Lam, P.Y.; Tobimatsu, Y.; Takeda, Y.; Suzuki, S.; Yamamura, M.; Umezawa, T.; Lo, C.
Disrupting Flavone Synthase II Alters Lignin and Improves Biomass Digestibility
Plant Physiol.
174
972-985
2017
Oryza sativa (Q0JFI2), Oryza sativa
brenda
Ueyama, Y.; Suzuki, K.; Fukuchi-Mizutani, M.; Fukui, Y.; Miyazaki, K.; Ohkawa, H.; Kusumi, T.; Tanaka, Y.
Molecular and biochemical characterization of torenia flavonoid 3'-hydroxylase and flavone synthase II and modification of flower color by modulating the expression of these genes
Plant Sci.
163
253-263
2002
Torenia hybrid cultivar
-
brenda