Table 2.

HSP21 Promotes Carotenoid Accumulation in Tomato Fruits after Cold Storage

Distribution of Carotenoid (% of Total)
At Harvest (Mature Green)7 d after Cold Storage
Type of CarotenoidControlT4-311ControlT4-311
Phytoenen.d.n.d.4.812.5
Phytofluenen.d.n.d.2.75.9
β-Carotenen.d.n.d.34.75.9
ζ-Carotenen.d.n.d.n.d.n.d.
γ-Carotenen.d.n.d.n.d.n.d.
Neurosporenen.d.n.d.n.d.n.d.
Lycopenen.d.n.d.16.668.3
Lutein86.386.141.27.4
Violaxanthin7.57.6n.d.n.d.
Neoxanthin6.26.3n.d.n.d.
Total carotenoid (μg/g FW)1.76 ± 0.522.21 ± 0.311.53 ± 0.311.89 ± 1.1
  • Carotenoids were extracted from mature green control and transgenic (T4-311) fruits at harvest and 7 d after cold storage. Total carotenoids were measured with a spectrophotometer and analyzed by HPLC. Results are average values of four different fruits. n.d., not detected.