Physiological characterization of re-oxygenation responses in mahaleb seedlings
Physiological characterization of re-oxygenation responses in mahaleb seedlings
复制标题
马哈利布幼苗复氧反应的生理特征
DOI：
10.17660/actahortic.2019.1235.47
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发表时间：
2019-02
期刊：
影响因子：
--
通讯作者：
L.Deguo
中科院分区：
文献类型：
--
作者：
Z.Peng;J.Luting;Q.Sijun;L.Deguo
中国辽宁省夏季经常发生短时暴雨，这是樱桃生产的一个常见环境制约因素，因为它会导致植物缺氧。马哈利（Prunus mahaleb）是我国寒地甜樱桃的优良砧木，具有繁殖快、适应性强等优点。然而，该物种很容易受到短期严重干旱造成的内涝的影响，特别是在雨季。在本研究中，我们的特点是基本的驯化反应Mahaleb幼苗复氧期间恢复后的缺氧期。复氧迅速降低丙二醛含量的Mahaleb，和酶的测定表明，过氧化氢酶和过氧化物酶的水平在淹水和复氧下降。我们还表征了根和叶组织之间对复氧反应的差异。我们的研究结果证实，不同的组织表现出不同的反应，再氧化根恢复更快的氧化损伤相比，叶。
Short-term heavy rain, a frequent event during the summer season in Liaoning Province, China, is a common environmental constraint for cherry production as it causes oxygen deprivation in plants. Mahaleb (Prunus mahaleb) has been used as a sweet cherry rootstock in cool regions because of its high propagation rate and adaptability. However, this species is vulnerable to waterlogging caused by short-term heavy rainfalls, especially during the rainy season. In the present study, we characterized the fundamental acclimation responses of mahaleb seedlings to re-oxygenation during the recovery after the period of anoxia. Re-oxygenation rapidly decreased the malondialdehyde content in mahaleb, and the enzymatic assays revealed that the levels of catalase and peroxidase during waterlogging and re-oxygenation decreased. We also characterized the differences in the response to re-oxygenation between root and leaf tissues. Our results confirm that different tissues show different response to re-oxygenation - roots recover faster from oxidative damage compared to leaves.