Table S1.

Primer list

Gene	Arabidopsis Gene Identifier number	Forward	Reverse	Spans intron?
IAA5	At1g15580	GCTCTGCAAATTCTGTTCGGA	ATTCACTTTCCTTCAACGTATCATCAA	Yes
STH7	At4g39070	CATCTCCGGTTCTCTCTCACTTCT	CATTCTCTGCATAGTATTGCTCTGTC	Yes
ACTIN2	At3g18780	AGTGGTCGTACAACCGGTATTGT	GATGGCATGAGGAAGAGAGAAAC	Yes
ACTIN7	At5g09810	AGTGGTCGTACAACCGGTATTGT	GAGGAAGAGCATACCCCTCGTA	Yes
ACTIN8	At1g49240	AGTGGTCGTACAACCGGTATTGT	GAGGATAGCATGTGGAAGTGAGAA	Yes
LBO promoter clone		CACTACCCTAAGACCGTTGAAAG	ATTGAAAGCAGACCAAGAAAGAA	n/a
LBO cDNA clone		ATGGCTCCTCTACCTATTTCTTC	TTAATTGAGAATCTTGGCAAAATC	n/a
LBO WT genotype		TTGGTCTGCTTTCAATATGGC	AGCACTTCCATCAGAATGTGG	n/a
lbo-1 T-DNA genotype		CAGGTGCCCACGGAATAGT	AGCACTTCCATCAGAATGTGG	n/a
LBO TILLING screen		GCCTGTCATTGATTTCTCTAAGC	AAGTCCAAAGTCCTCTTTCCTTG	n/a
lbo-2 PCR sequencing		GTTTGCCCTTGGTGTTCATCC	CCTCTCCTTTTCCCTGTTTGTTAC	n/a
lbo-3 PCR sequencing		TTGGTCTGCTTTCAATATGGC	AGCACTTCCATCAGAATGTGG	n/a

STH7, SALT TOLERANCE HOMOLOG7. n/a, not applicable.