Table 1. The detailed information of OsBBX members.

Name	RGAP LOC	RAP Os ID	Originalname	flcDNA	Genomic position	Gene orientation	CDS length	Protein length	Mutant lines
OsBBX1	LOC_Os01g10580	Os01g0202500	OsDBB3c	AK242176	5638769–5640495	Upward	1074	357	2C-30193, 2A-20608
OsBBX2	LOC_Os02g07930	Os02g0176000	N/A	AK241477	4149767–4151241	Downward	669	222	2A-50063, 2A-70002
OsBBX3	LOC_Os02g08150	Os02g0178100	OsF	AK109630	4315272–4316958	Upward	1050	349	N/A
OsBBX4	LOC_Os02g39360	Os02g0606200	OsSTH	AK104293, AK061044, CT830238, AB001885	23753345–23754688	Upward	816	271	3A-06908, 1B-23515, RdSpm2065A_3.1, K-05221
OsBBX5	LOC_Os02g39710	Os02g0610500	OsCOL4/OsD	AK100097, AK058536	23983881–23985424	Upward	999	332	GSNU_Ds48, 1C-02709
OsBBX6	LOC_Os02g43170	Os02g0646200	N/A	AK071507, CT832305	26021916–26023624	Upward	810	269	1C-09019, 4A-50785, 2D-21119, 3C-00699
OsBBX7	LOC_Os02g49230	Os02g0724000	OsN	CT832281, CT832280, CT832282, CT832279, AK071630, AB001888	30088390–30093805	Upward	1443	480	1B-01905, 03Z11BI26, T28979T, T29560T, K-02893, 3A-03271, H0027_1_204_1A
OsBBX8	LOC_Os02g49880	Os02g0731700	OsK	AK120314, AK072346	30466919–30469904	Downward	1359	452	GSNU_Ds56, DAI1F05
OsBBX9	LOC_Os03g22770	Os03g0351100	OsP	AK101822, AK099864, AB001882	13151678–13154262	Upward	1212	403	GSNU_Ds123
OsBBX10	LOC_Os03g50310	Os03g0711100	OsJ	AK120563	28680012–28682770	Upward	1266	421	1A-21121, SAO6E12,
OsBBX11	LOC_Os04g41560	Os04g0493000	OsSTO	AK061664, AB001883	24462763–24464258	Downward	774	257	3A-52431, 3D-01977, 1A-23305
OsBBX12	LOC_Os04g42020	Os04g0497700	OsC	AK121024, AK059443	24704844–24706348	Upward	1002	333	N/A
OsBBX13	LOC_Os04g45690	Os04g0540200	N/A	AK061333, CT830169	26842136–26844370	Upward	753	250	2A-50066, 1D-04450
OsBBX14	LOC_Os05g11510	Os05g0204600	OsDBB3b	AK106865	6514687–6517221	Upward	1137	378	T00477T, 05NPBLD37 04Z11RN03
OsBBX15	LOC_Os06g01340	N/A	N/A	N/A	208204–209107	Upward	672	223	1C-06536, M0022530 RDs501_5.2, RDs686_5.1
OsBBX16	LOC_Os06g05890	Os06g0152200	OsDBB3a	AK072231, AK104083, AB001886	2694461–2698504	Upward	1083	360	3B-00658, 3A-07296 1A-06932
OsBBX17	LOC_Os06g15330	Os06g0264200	OsL	AK287836, AK241249	8703832–8705950	Upward	1347	448	DAK3H04
OsBBX18	LOC_Os06g16370	Os06g0275000	Hd1/OsA	AK241018, AB041838	9335360–9337644	Upward	1188	395	T09919T, T31488T, T40187T, T32475T, T09921T, T17365T, T34409T, T10771T
OsBBX19	LOC_Os06g19444	Os06g0298200	OsM	AK072192, AK121630, AK098865, CT833045	11069109–11075722	Downward	1227	408	5A-00300, M0065138, NE2301
OsBBX20	LOC_Os06g44450	Os06g0654900	OsE	AK243265, CT837522	26842090–26843779	Downward	1116	371	4A-04189, 04Z11IK06
OsBBX21	LOC_Os06g45040	Os06g0661200	N/A	N/A	27252386–27254042	Upward	825	274	3B-00549, 1A-15201, 05NPBMT81
OsBBX22	LOC_Os06g49880	Os06g0713000	N/A	AK105957, CT833308, CT831615, AB001884	30195099–30196607	Upward	927	308	2B-20503, 3A-51129
OsBBX23	LOC_Os07g47140	Os07g0667300	N/A	AK120101	28183868–28186917	Downward	1143	380	04Z11HI63, 05NPBNR43, FL047220
OsBBX24	LOC_Os08g08120	Os08g0178800	N/A	AK287608, AK063025	4609503–4611921	Downward	852	283	NE1871
OsBBX25	LOC_Os08g15050	Os08g0249000	OsG	AK109938, CT833687	9097577–9098884	Upward	912	303	N/A
OsBBX26	LOC_Os08g42440	Os08g0536300	OsO	AK099722	26790110–26794467	Downward	1467	488	2C-60235, 1D-05321, 2C-20399, 3A-51217, 2D-30775, 3A-03017, 05NPBNP03, 05NPBNZ01
OsBBX27	LOC_Os09g06464	Os09g0240200	OsCO3/OsB	AK241570, CT835894, AB001887	3047020–3063571	Downward	1008	335	1C-03305, 1C-03306
OsBBX28	LOC_Os09g33550	Os09g0509700	N/A	AK120589	19783043–19786296	Downward	1416	471	T28637T, NE4523_0_503_1A, T09425T, T09366T, FL007537
OsBBX29	LOC_Os09g35880	Os09g0527900	OsDBB1	AK058794, AK122172, CT828272	20645916–20649512	Downward	636	211	3C-00717, 4A-01958
OsBBX30	LOC_Os12g10660	Os12g0209200	N/A	AK067820	5698772–5701407	Upward	633	210	2C-50216