OCCURRENCE OF BRASSINOSTEROIDS AND SOME BIOSYNTHETICALLY RELATED COMPOUNDS

(incomplete list, subjected to revision)

Species	Family	Brassinosteroids	References
Acutodesmus acuminatus (Lagerh.) Tsarenko	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Acutodesmus incrassatulus (Bohlin) Tsarenko	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Aegle marmelos Correa	Rutaceae	24-epibrassinolide	Sondhi et al., 2008
Alnus glutinosa Gaertn.	Betulaceae	brassinolide castasterone	Plattner et al., 1986
Apium graveolens L.	Umbelliferae	2-deoxybrassinolide*	Schmidt et al., 1995c
Arabidopsis thaliana (L.) Henyh.	Brassicaceae	brassinolide^C, D, E, F, G, H, I, J, L, P, T, U, AJ, AK, AL 24-epibrassinolide^B 3-epibrassinolide^G*, T 2-deoxybrassinolide (= 7-oxatyphasterol)^Z 3-epi-2-deoxybrassinolide (=7-oxateasterone)^Z* castasterone^A, A’,^B, C, D, E, F, H, I, J, L, M, N, O, P, Q, R, S, T, U, V, W, Y, AA, AB, AD, AE, AF, AG, AH, AJ, AK 3-epicastasterone^T 28-norcastasterone^E, AI, AK 28-homocastasterone^AK dolichosterone^AC typhasterol^A, C, D, F, I, L, M, N, O, P, Q, R, S, V, W, AA, AB, AD, AF, AH 28-nortyphasterol^E* teasterone^D, F, I, L, N, O, P, W, Y, AK typhasterol^A’, AK 3-dehydroteasterone^F, Y 6-deoxocastasterone^A, A’, C, D, F, H, I, J, L, M, N, O, P, Q, R, S, U, V, W, Y, AA, AB, AD, AE, AF, AG, AH 6-deoxotyphasterol^A, A’, C, D, F, H, I, J, L, M, N, O, P, R, S, U, V, W, Y, AA, AB, AD, AE, AF, AG, AH 6-deoxoteasterone^C*,D, F, H, I, J, L, M, N, O, P, R, S, U, V, W, Y, AA, AB, AD, AE, AF, AG, AH 3-dehydro-6-deoxoteasterone^F, I, J, P, R, S, U, W, Y, AB, AD, AE, AF, AG, AH 23-O-b-D-glucopyranosylcastasterone^Q* 23-O-b-D-glucopyranosylbrassinolide^Q* 6-deoxocathasterone^H, I, J, K, L, LA, M, O, P, R, S, U, V, W, AA, AB, AD, AE, AF, AG, AH 3-epi-6-deoxocathasterone^LA, Y, AB, AE 3-epi-6-deoxo-28-norcathasterone^LA* 26-norcastasterone^AI*	A) Fujioka et al., 1996 A’) Fujioka et al., 1997 B) Schmidt et al., 1997 C) Fujioka et al., 1998a D) Noguchi et al., 1999a E) Fujioka et al., 2000a F) Noguchi et al., 2000 G) Konstantinova et al., 2001 H) Choe et al., 2001 I) Nomura et al., 2001 J) Bancos et al., 2002 K) Carland et al., 2002 L) Choe et al., 2002 LA) Fujioka et al., 2002a M) He et al., 2003 N) Shimada et al., 2003b O) Kim et al., 2005a P) Nakamura et al., 2005 Q) Poppenberger et al., 2005 R) Takahashi et al., 2005 S) Turk et al., 2005 T) Antonchick et al., 2006 U) Bancos et al., 2006 V) Kim et al., 2006b W) Lee et al., 2006a Y) Ohnishi et al., 2006c Z) Katsumata et al., 2008 AA) Carland et al., 2010 AB) Chung et al., 2010 AC) Lee et al., 2010a AD) Beste et al., 2011 AE) Ohnishi et al., 2012 AF) Schneider et al., 2012 AG) Villiers et al., 2012 AH) Choi et al., 2013 AI) Son et al., 2013 AJ) Xin et al., 2013ª AK) Singh et al., 2014 AL) Lv et al., 2014
Areca catechu L.	Arecaceae	brassinolide	Wang & Lu, 2008
Atractylodes lancea	Compositae	brassinolide	Ren et al., 2014
Banksia grandis Willd.	Proteaceae	brassinolide castasterone	cf. Takatsuto, 1994
Beta vulgaris L.	Chenopodiaceae	castasterone 24-epicastasterone	Schmidt et al., 1994
Brassica campestris var. pekinensis	Brassicaceae	brassinolide^A, C, D, E 28-homobrassinolide^C*, D 28-norbrassinolide^B*, C, D castasterone^A, C, D 28-homocastasterone^B*, C, D 28-norcastasterone^B*, C, D	A) Abe et al., 1982 B) Abe et al., 1983 C) Ikekawa et al., 1984b D) Ikekawa & Takatsuto, 1984 E) Lv et al., 2014
Brassica juncea L.	Brassicaceae	castasterone^A 24-epibrassinolide^A, B	A) Kanwar et al., 2012 B) Kanwar et al., 2013
Brassica napus L.	Brassicaceae	brassinolide^A*, B, C castasterone^A, C 28-norbrassinolide^C 28-norcastasterone^C	A) Grove et al., 1979 B) Cao et al., 1987 C) Ding et al., 2013a, b
Camellia sinensis (O) Kuntze (= Thea sinensis L.)	Theaceae	28-homodolicholide^A 24-epibrassinolide^A typhasterol^A 6-deoxocastasterone^A 6-deoxotyphasterol^A 3-dehydroteasterone^A 6-deoxo-28-norcastasterone^B 6-deoxo-28-nortyphasterol^B 6-deoxo-28-norteasterone^B 3-dehydro-6-deoxo-28-norteasterone^B 6-deoxo-28-norcathasterone^B	A) Gupta et al., 2004 B) Bhardwaj et al., 2007
Cannabis sativa L.	Cannabaceae	castasterone teasterone	Takatsuto et al., 1996b
Cassia tora L.	Fabaceae	brassinolide^A, B castasterone^A, B 28-norcastasterone^B typhasterol^B teasterone^A, B	A) Park et al., 1993a B) Park et al., 1994b
Castanea crenata Sieb. et Zucc	Fagaceae	brassinolide^C, E castasterone^A*, C, D, E 28-norcastasterone^B*, E 6-deoxocastasterone^D	A) Yokota et al., 1982a B) Abe et al., 1983 C) Ikeda et al., 1983 D) Arima et al., 1984 E) Ikekawa et al., 1984b
Catharanthus roseus Don.	Apocynaceae	brassinolide^A, B, C, D, E, G, H, J castasterone^A, B, C, D, E, G, H, J, K 3-epicastasterone^G typhasterol^E, F, G, J teasterone^E, F, G, I, J 6a-hydroxycastasterone^K 6-deoxocastasterone^H, I, J, K 6-deoxotyphasterol^I, J 6-deoxoteasterone^J 6-deoxo-3-dehydroteasterone^I cathasterone^F*, K 6-deoxocathasterone^F*, L 3-epi-6-deoxocathasterone^F*, L 6-deoxo-28-norcathasterone^L* 3-epi-6-deoxo-28-norcathasterone^L*	A) Park et al., 1989 B) Yokota et al., 1990b C) Choi et al., 1993 D) Suzuki et al., 1993a E) Suzuki et al., 1994a F) Fujioka et al., 1995b G) Suzuki et al., 1995a H) Choi et al., 1996 I) Choi et al., 1997 J) Fujioka & Sakurai, 1997a K) Fujioka et al., 2000b L) Fujioka et al., 2002a
Centella asiatica		castasterone	Sondhi et al., 2010
Chlamydomonas reinhardtii P.A. Dang.	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Chlorella minutissima Fott et Nováková	Trebouxiophyceae	brassinolide^A castasterone^A cathasterone^B 6-deoxo-24(?)-epicastasterone^B	A) Stirk et al., 2013 B) Stirk et al., 2014a
Chlorella pyrenoidosa Chick	Trebouxiophyceae	brassinolide castasterone	Stirk et al., 2013
Chlorella vulgaris Beijerinck	Trebouxiophyceae	brassinolide^A, B, C, D castasterone^A, B, C, D typhasterol^A, B, D teasterone^A, B, D 6-deoxocastasterone^A, B, D 6-deoxotyphasterol^A, B, D 6-deoxoteasterone^A, B, D 6-deoxo-3-dehydroteasterone^D	A) Bajguz, 2009 B) Bajguz & Piotrowska-Niczyporuk, 2013 C) Stirk et al., 2013 D) Bajguz & Piotrowska-Niczyporuk, 2014
Chlorococcum ellipsoideum Deason et Bold	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Cistus hirsutum Theill.	Cistaceae	brassinolide castasterone	cf. Takatsuto, 1994
Citrus sinensis Osbeck	Rutaceae	brassinolide castasterone	Motegi et al., 1994
Citrus unshiu Marcov.	Rutaceae	brassinolide castasterone typhasterol teasterone	cf. Takatsuto, 1994
Coccomyxa sp.	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Coelastrum microporum Nägeli	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Cryptomeria japonica D. Don.	Taxodiaceae	28-homobrassinolide^C dolicholide^A, B, C 28-homodolicholide^C typhasterol^B, C 3-dehydroteasterone^B, C cryptolide^C* x-epi-28-homobrassinolide^B(3 epimers) x-epi-28-homodolicholide^B x-epi-23-dehydrobrassinolide^B (4 epimers)	A) cf. Takatsuto, 1994 B) Yokota et al., 1998 C) Watanabe et al., 2000b
Cucurbita moschata Duchesne	Cucurbitaceae	brassinolide^A, B castasterone^A, B	A) Jang et al., 2000 B) Pachtong et al., 2006
Cupressus arizonica E. Greene	Cupressaceae	brassinolide castasterone 28-homocastasterone dolichosterone typhasterol teasterone 6-deoxocastasterone 3-dehydroteasterone 6-deoxotyphasterol* 3-dehydro-6-deoxoteasterone*	Griffiths et al., 1995b
Cystoseira myrica (S.G.Gmelin) C.Agardh	Sargassaceae	3-keto-22-epi-28-norcathasterone*	Hamdy et al., 2009
Daucus carota ssp. sativus L.	Apiaceae	brassinolide^A, B castasterone^A 24-epicastasterone^A	A) Schmidt et al., 1998 B) Lv et al., 2014
Desmodesmus armatus (R. Chodat) E. Hegewald	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Diospyros kaki Thunb.	Ebenaceae	castasterone	cf. Takatsuto, 1994
Distylium racemosum Sieb et Zucc.	Hammamelidaceae	brassinolide^A, B, C 28-norbrassinolide^A, B, C castasterone^A, B, C 28-norcastasterone^A, B, C typhasterol^C teasterone^C 3-dehydroteasterone^C*	A) Ikekawa et al., 1984b B) Ikekawa & Takatsuto, 1984a C) Abe et al., 1994
Dolichos lablab Adans.	Leguminosae	brassinolide^C, D dolicholide^A*, D 28-homodolicholide^C*, D castasterone^C, D dolichosterone^B*, D 28-homodolichosterone^B*, D 6-deoxocastasterone^D 6-deoxodolichosterone^D	A) Yokota et al., 1982b B) Baba et al., 1983 C) Yokota et al., 1983b D) Yokota et al., 1984
Echium plantagineum L.	Boraginaceae	brassinolide castasterone	cf. Takatsuto, 1994
Ecklonia maxima	Phaeophyceae	brassinolide castasterone	Stirk et al., 2014b
Elaeis guineenses Jacq. var. tenera	Palmae	brassinolide	Habib et al., 2012
Equisetum arvense L.	Equisetaceae	28-norbrassinolide castasterone dolichosterone 28-norcastasterone	Takatsuto et al., 1990
Eriobottrya japonica Lindl.	Rosaceae	castasterone	cf. Takatsuto, 1994
Erythronium japonicum Decne	Liliaceae	typhasterol	Yasuta et al., 1995
Eucalyptus calophylla R. Br.	Myrtaceae	brassinolide	cf. Takatsuto, 1994
Eucalyptus marginata Sn.	Myrtaceae	dolichosterone	cf. Takatsuto, 1994
Fagopyrum esculentum Moench.	Polygonaceae	brassinolide castasterone	Takatsuto et al., 1990
Gingko biloba L.	Gingkoaceae	teasterone	Takatsuto et al., 1996a
Gyoerffyana humicola Kol et Chodat	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Gypsophyla perfoliata L.	Caryophyllaceae	24-epibrassinolide	Schmidt et al., 1996a
Helianthus annuus L.	Asteraceae	brassinolide castasterone 28-norcastasterone	Takatsuto et al., 1989
Hordeum vulgare L.	Poaceae	castasterone	Dockter et al., 2014
Hydrodictyon reticulatum (L.) Lagerheim	Hydrodictyaceae	28-homocastasterone 24-epicastasterone*	Yokota et al., 1987a
Klebsormidium flaccidum (Kütz.) P.C. Silva, K.R. Mattox et W.H. Blackw.	Charophyceae	brassinolide castasterone	Stirk et al., 2013
Lilium elegans Thunb.	Araceae	brassinolide castasterone typhasterol teasterone	Suzuki et al., 1994b
Lilium longiflorum Thunb.	Araceae	brassinolide^A castasterone^A typhasterol^A, B teasterone^B, E 3-dehydroteasterone^B* 3-O-b-D-glucopyranosylteasterone^F* teasterone 3-laurate^D*, E teasterone 3-myristate^C*, D, E	A) Abe, 1991 B) Abe et al., 1994 C) Asakawa et al., 1994 D) Asakawa et al., 1996 E) Soeno et al., 2000a F) Soeno et al., 2000b
Lolium perenne L.	Poaceae	25-methylcastasterone*	Taylor et al., 1993
Luffa cylindrica (L.) M.J. Roem	Cucurbitaceae	brassinolide castasterone	Pachtong et al., 2007
Lychnis vicaria L.	Caryophyllaceae	24-epicastasterone 24-episecasterone*	Friebe et al., 1999
Lycopersicon esculentum Mill.	Solanaceae	brassinolide^F 24-epibrassinolide^G castasterone^A, B, C, D, F 24-epicastasterone^G 28-norcastasterone^A, D, E typhasterol^G teasterone^G 6a-hydroxycastasterone^B* 6-deoxocastasterone^A, B, C, D, F 6-deoxo-24-epicastasterone^G 6-deoxo-28-norcastasterone^E 6-deoxotyphasterol^B, D, F 6-deoxoteasterone^B, C, D, F 6-deoxo-3-dehydroteasterone^B, D, F 6-deoxo-28-nortyphasterol^E* 6-deoxocathasterone^C, D, F	A) Yokota et al., 1997b B) Bishop et al., 1999 C) Koka et al., 2000 D) Nomura et al., 2001 E) Yokota et al., 2001a F) Nomura et al., 2005b G) Wu et al., 2013
Malus prunifolia (Willd.) Borkh.	Rosaceae	castasterone typhasterol teasterone 6-deoxocastasterone 6-deoxotyphasterol 6-deoxo-3-dehydroteasterone 6-deoxoteasterone 6-deoxocathasterone	Pereira-Netto et al., 2009
Marchantia polymorpha L.	Marchantiaceae	castasterone	Kim et al., 2002d
Monoraphidium contortum (Thur.) Komárková-Legnerová	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Myrmecia bisecta Reisigl	Trebouxiophyceae	brassinolide castasterone	Stirk et al., 2013
Nautococcus mamillatus Korschikov	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Nicotiana tabacum L.	Solanaceae	castasterone teasterone 6-deoxocastasterone 6-deoxotyphasterol 6-deoxo-3-dehydroteasterone 6-deoxoteasterone 6-deoxocathasterone	Ohnishi et al., 2006b
Ornithopus sativus Brot.	Fabaceae	castasterone^A, B 24-epicastasterone^A, B 6-deoxocastasterone^B 6-deoxo-28-norcastasterone^B* 6-deoxo-24-epicastasterone^B*	A) Schmidt et al., 1993a B) Spengler et al., 1995
Oryza sativa L.	Poaceae	brassinolide^C, G 24-epibrassinolide^Q, S castasterone^A, B, D, E, H, I, J, K, L, M, O, P, Q, R 24-epicastasterone^S dolichosterone^A, B, S typhasterol^H, I, J, L, M, N, P, Q, R, S 28-homotyphasterol^F* teasterone^D, E,^H, I, J, M, N, P, Q, R, S 28-homoteasterone^F 6-deoxocastasterone^D, E, F, H, I, J, K, L, M, P, R 6-deoxo-24-epicastasterone^S 6-deoxotyphasterol^H, I, J, K, L, M, N, P, R 3-dehydroteasterone^P 3-dehydro-6-deoxoteasterone^H, J, K, M, N, P, R 6-deoxoteasterone^H, I, J, K, L, M, N, R 6-deoxocathasterone^H, I, J, K, L, M, N, R 3-epi-6-deoxocathasterone^M	A) Abe et al., 1984b B) Ikekawa & Takatsuto, 1984 C) Abe, 1991 D) Park et al., 1993d E) Park et al., 1994a F) Abe et al., 1995a G) Shim et al., 1998 H) Mori et al., 2002a I) Tanabe et al., 2005 J) Nakamura et al., 2006a K) Sakamoto et al., 2006b L) Kim et al., 2008a M) Wu et al., 2008 N) Sakamoto et al., 2012 O) Ding et al., 2013a, b P) Li et al., 2013 Q) Xin et al., 2013a R) Asahina et al., 2014 S) Wang et al., 2014
Perilla frutescens Britton.	Labiatae	28-homodolicholide^A castasterone^A, B	A) Park et al., 1993b B) Park et al., 1994a
Petunia hybrida line W138	Solanaceae	brassinolide^A, castasterone^A, B typhasterol^A, teasterone^A, 6-deoxocastasterone^A, B 6-deoxotyphasterol^A, B 6-deoxoteasterone^A, B 3-dehydroteasterone^A, 6-deoxo-3-dehydroteasterone^A, B cathasterone^A, 6-deoxocathasterone^A, B 3-epi-6-deoxocathasterone^A, B	A) Verhoef et al., 2013 B) Verhoef et al., 2014
Phalaris canariensis L.	Poaceae	castasterone teasterone	Shimada et al., 1996
Pharbitis nil (L.) Choisy	Convolvulaceae	castasterone typhasterol teasterone 6-deoxocastasterone 6-deoxotyphasterol 6-deoxoteasterone 6-deoxocathasterone	Suzuki et al., 2003b
Pharbitis purpurea Voigt	Convolvulaceae	castasterone 28-norcastasterone	Suzuki et al., 1985
Phaseolus vulgaris L.	Fabaceae	brassinolide^E, G dolicholide^A, E, G castasterone^A, E, G dolichosterone^E, G 25-methyldolichosterone^B*, G 2-epicastasterone^C*, G, N 3-epicastasterone^C, G, O 3,24-diepicastasterone^C*, G 2,3-diepicastasterone^C*, G, O 2-epi-25-methyldolichosterone^C*, G 2,3-diepi-25-methyldolichosterone^C*, G 1b-hydroxycastasterone^G* 3-epi-1a-hydroxycastasterone^G* typhasterol^H teasterone^H 28-homocastasterone^K 28-homotyphasterol^K 2-deoxy-25-methyldolichosterone^D*, G, M 3-epi-2-deoxy-25-methyldolichosterone^D*, ^G, M 6-deoxocastasterone^A*, E, G 6-deoxodolichosterone^A*, E, G 6-deoxo-28-homodolichosterone^E*, G 6-deoxo-25-methyldolichosterone^G* 3-epi-6-deoxocastasterone^G*, L 23-O-b-D-glucopyranosyl-25- methyldolichosterone^E*, ^G 23-O-b-D-glucopyranosyl-2-epi- -25-methyldolichosterone^G* 23-dehydro-2-epicastasterone^J* 6-deoxocathasterone^I brassinolide derivatives^E (2) x-homobrassinolide^E (1 isomer) dolicholide derivatives^E (4) x-dolicholide^E (1 isomer) x-homodolicholide^E x-homodolicholide derivatives^E (3) x-castasterone^E (4 isomers) x-hydroxycastasterone^E (1 isomer) x-28-homocastasterone^E (2 isomers) x-homodolichosterone^E (3 isomers) x-6-deoxo-28-homodolichosterone^E (1 isomer)	A) Yokota et al., 1983c B) Kim et al., 1987 BA) Takahashi et al., 1987 BB) Yokota & Takahashi, 1987 BC) Yokota et al., 1987b C) Yokota et al., 1987d D) Kim, 1991 E) Kim et al., 2000d F) Joo et al., 2002 G) Hwang et al., 2006 H) Kim et al., 2006c I) Hwang et al., 2007b J) Park et al., 2009a K) Park et al., 2009b L) Lee et al., 2011b
Phoenix dactylifera L.	Arecaceae	24-epicastasterone	Zaki et al., 1993
Picea sitchensis (Bong.) Carr.	Pinaceae	castasterone typhasterol	Yokota et al., 1985
Pinus silvestris Lour.	Pinaceae	brassinolide castasterone	Kim et al., 1990
Pinus thubergii Parl.	Pinaceae	castasterone typhasterol	Yokota et al., 1983a
Pisum sativum L.	Fabaceae	brassinolide^A, B, C, E 2-deoxybrassinolide^A castasterone^A, B, C, D, E typhasterol^A, B, C 6-deoxocastasterone^A, B, C, D, E 3-dehydroteasterone^C, D 6-deoxotyphasterol^C, D, E 6-deoxoteasterone^C, D, E 6-deoxo-3-dehydroteasterone^E 6-deoxocathasterone^C, E x-hydroxybrassinolide^A x-6-deoxocastasterone^A (1 isomer)	A) Yokota et al., 1996a B) Nomura et al., 1997b C) Nomura et al., 2001 D) Nomura et al., 2004 E) Nomura et al., 2007
Poloidion didymos Pascher	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Protococcus viridis C. Agardh	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Protosiphon botryoides G.A. Klebs	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Psophocarpus tetragonolobus DC	Fabaceae	brassinolide castasterone 28-homocastasterone 6-deoxocastasterone 6-deoxo-28-homocastasterone	cf. Takatsuto, 1994
Raphanus sativus L.	Brassicaceae	brassinolide^A castasterone^A teasterone^B 28-homoteasterone^B*	A) Schmidt et al., 1991 B) Schmidt et al., 1993b
Raphidocelis subcapitata (Korshikov) G. Nygaard, J. Komárek, Kristiansen et Skulberg	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Rheum rhabarbarum L.	Polygonaceae	brassinolide castasterone 24-epicastasterone	Schmidt et al., 1995a
Robinia pseudo-acacia L.	Fabaceae	castasterone typhasterol 6-deoxocastasterone	Abe et al., 1995b
Saccharomyces cerevisiae, strain WAT21	Saccharomycetaceae	castasterone	Kim et al., 2010c
Scotiellopsis terrestris (Reisigl) Puncoch. et Kalina	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Secale cereale L.	Poaceae	castasterone^A, C 28-homocastasterone^A 28-norcastasterone^A 2-epicastasterone^C 3-epicastasterone^C typhasterol^A teasterone^A secasterone^A*, B, C 2,3-diepisecasterone^B*, C secasterol^B* 6-deoxocastasterone^A	A) Schmidt et al., 1995b B) Antonchick et al., 2003 C) Antonchick et al., 2005
Solidago altissima L.	Asteraceae	brassinolide	cf. Takatsuto, 1994
Spongiochloris excentrica Starr	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Sporolobus stapfianum Gand.	Graminae	brassinolide dolicholide castasterone	Sasse et al., 1998
Stichococcus bacillaris Nägeli	Trebouxiophyceae	brassinolide castasterone	Stirk et al., 2013
Stigeoclonium nanum (Dillwyn) Kütz.	Chlorophyceae	brassinolide castasterone	Stirk et al., 2013
Thea sinensis L.	Theaceae	brassinolide^B, D castasterone^A, B, D 28-homocastasterone^A*, D 28-norcastasterone^A*, D typhasterol^C teasterone^C*	A) Abe et al., 1983 B) Morishita et al., 1983 C) Abe et al., 1984a D) Ikekawa & Takatsuto, 1984
Triticum aestivum L.	Poaceae	brassinolide^B 24-epibrassinolide^B 28-homobrassinolide^B castasterone^A, B 28-homocastasterone^B typhasterol^A teasterone^A 3-dehydroteasterone^A* 6-deoxocastasterone^A x-castasterone^A (1 isomer) x-6-deoxocastasterone^A (2 isomers)	A) Yokota et al., 1994 B) Janeczko & Swaczynová, 2010b
Tulipa gesneriana L.	Liliaceae	typhasterol	cf. Takatsuto, 1994
Typha latifolia Mey.	Typhaceae	typhasterol*	Schneider et al., 1983
Ulothrix sp.	Ulvophyceae	brassinolide castasterone	Stirk et al., 2013
Vicia faba L.	Fabaceae	brassinolide^A, B 24-epibrassinolide^B* castasterone^A, B, C dolichosterone 28-norcastasterone^B typhasterol^C 6-deoxoteasterone^C 6-deoxotyphasterol^C 6-deoxocastasterone^C 6-deoxocathasterone^C	A) Park et al., 1987b B) Ikekawa et al., 1988 C) Fukuta et al., 2004
Zea mays L.	Poaceae	castasterone^A, B, E 28-norcastasterone^B, D typhasterol^A, E teasterone^A, B 6-deoxocastasterone^B, E 6-deoxoteasterone^C, E 6-deoxo-3-dehydroteasterone^E 6-deoxotyphasterol^C, E 6-deoxocathasterone^C, E	A) Suzuki et al., 1986 B) Park et al., 1995 C) Kim et al., 2005e D) Kim et al., 2006d E) Hartwig et al., 2011
Zinnia elegans Jacq.	Asteraceae	castasterone^A, B typhasterol^A, B 6-deoxocastasterone^A, B 6-deoxotyphasterol^A, B 6-deoxoteasterone^A, B 6-deoxocathasterone^B	A) Yamamoto et al., 2001 B) Yamamoto et al., 2007

* first reported occurrence of the natural product

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Suzuki Y, Yamaguchi I, Yokota T, Takahashi N. 1986. Identification of castasterone, typhasterol and teasterone from the pollen of Zea mays. Agricultural and Biological Chemistry 50: 3133-3138**

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Yokota T, Baba J, Koba S, Takahashi N. 1984. Purification and separation of eight steroidal plant growth regulators from Dolichos lablab seeds. Agricultural and Biological Chemistry 48: 2529-2534**

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Yokota T, Takahashi N. 1987. Isolation of brassinosteroids as plant growth regulators from kidney beans. Japan Kokai Tokkyo Kogyo JP 63,216,896 [88,216,896] [Chemical Abstracts 111:4522]

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(Updated October 9, 2014; uploaded February 24, 2017)