Young Researchers and Elite Club, Ahar Branch, Islamic Azad University, Ahar, Iran.
J Food Sci Technol. 2013 Oct;50(5):1029-33. doi: 10.1007/s13197-013-0994-y. Epub 2013 Apr 9.
Storage of tomato (Solanum lycopersicum) as originally tropical fruit is limited by the risk of chilling injury (CI). To develop an effective technique to reduce CI, the effects of treatment with 0, 50 and 100 μM prohexadione-calcium (Pro-Ca) on CI, electrolyte leakage (EL), malondialdehyde (MDA) and proline contents, and activities of phospholipase D (PLD) and lipoxygenase (LOX), were investigated in tomato fruit stored at 1°C for 21 days. Treatment with Pro-Ca, without significant difference between two applied concentrations, significantly mitigated chilling injury. Also, Pro-Ca treatment maintained lower levels of EL and MDA content, higher level of proline content and inhibited the increases in PLD and LOX activities compared with the control fruit. These results suggest that Pro-Ca might mitigate CI by inhibiting PLD and LOX activities and by enhancing membrane integrity.
番茄（Solanum lycopersicum）作为一种原本生长在热带的水果，其贮藏受到冷害（CI）风险的限制。为了开发一种有效减少 CI 的技术，研究了用 0、50 和 100 μM 调果酸钙（Pro-Ca）处理对 1°C 贮藏 21 天的番茄果实中 CI、电解质渗漏（EL）、丙二醛（MDA）和脯氨酸含量以及磷脂酶 D（PLD）和脂氧合酶（LOX）活性的影响。Pro-Ca 处理，两种施用浓度之间无显著差异，显著减轻了冷害。此外，Pro-Ca 处理保持较低的 EL 和 MDA 含量，较高的脯氨酸含量，并抑制 PLD 和 LOX 活性的增加，与对照果实相比。这些结果表明，Pro-Ca 可能通过抑制 PLD 和 LOX 活性以及增强膜完整性来减轻 CI。
