The lycopene β-cyclase plays a significant role in provitamin A biosynthesis in wheat endosperm

BMC Plant Biology

Table 1 Cartenoids content and compositions in developing grains

Grain	Lutein	Zeaxanthin	β-cryptoxanthin	α-carotene	β-carotene	Total carotenoid
Grain	(μ g g ⁻¹ )	( μg g ⁻¹ )	( μg g ⁻¹ )	( μg g ⁻¹ )	( μg g ⁻¹ )	( μg g ⁻¹ )
1	5.52 ± 0.61a (60%)	0.60 ± 0.09a (7%)	0.27 ± 0.03a (3%)	0.36 ± 0.05a (4%)	2.35 ± 0.31a (26%)	9.10 ± 1.82a
2	4.70 ± 0.42b (59%)	0.56 ± 0.08a (7%)	0.23 ± 0.02a (3%)	0.33 ± 0.04a (4%)	2.12 ± 0.29b (27%)	7.94 ± 0.95b
3	3.80 ± 0.88c (62%)	0.40 ± 0.06b (6%)	0.17 ± 0.02b (3%)	0.32 ± 0.04a (5%)	1.47 ± 0.21c (24%)	6.16 ± 0.80c
4	1.93 ± 0.29d (50%)	0.22 ± 0.03c (6%)	0.08 ± 0.01c (2%)	0.31 ± 0.03a (8%)	1.32 ± 0.15d (34%)	3.86 ± 0.54d
5	0.52 ± 0.08e (53%)	0.17 ± 0.03c (17%)	ND	ND	0.29 ± 0.03e (30%)	0.98 ± 0.16e

Data represent the average carotenoid content (±SEM) of grains from five individual ears per line. Different letters indicate significant differences (P = 0.05) in carotenoid pigment content were determined by Tukey’s HSD test. Values in parentheses represent the percentages of each carotenoid composition relative to the total content. ND = not detected.

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