UNIFLORA, a pivotal gene that regulates floral transition and meristem identity in tomato (Lycopersicon esculentum)
UNIFLORA, a pivotal gene that regulates floral transition and meristem identity in tomato (Lycopersicon esculentum)
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DOI：
10.1046/j.1469-8137.2003.00937.x
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发表时间：
2004-02-01
期刊：
影响因子：
9.4
通讯作者：
Kinet, JM
中科院分区：
文献类型：
--
作者：
Dielen, V;Quinet, M;Kinet, JM
番茄（Lycopersicon esculentum）突变体uniflora（uf）在冬季开花晚且高度不同步。这一令人困惑的行为促使我们进一步研究该突变体的开花调控，以提高我们的理解MANUFACTURLORA基因function.Growing植物在不同的日照长度和光照强度下显示，开花时间在uf依赖于每日光能积分。在播种后不同时间将植物从低光能积分转换到高光能积分表明，光条件效应是阶段依赖性的，这表明光能积分和内源调节途径之间的相互作用影响分生组织对开花信号的敏感性。碳水化合物分析表明，这些信号之一可能是蔗糖，但其他相互作用的因素可能是由根系产生的。如嫁接实验所示，因此，该基因似乎在番茄中具有双重作用：花转变调节和花序分生组织同一性的维持。
Flowering of uniflora (uf), a tomato (Lycopersicon esculentum) mutant which consistently produces solitary flowers instead of inflorescences, is late and highly asynchronous in winter. This puzzling behaviour prompted us to further investigate flowering regulation in this mutant to improve our understanding of UNIFLORA gene function.Growing plants under different daylengths and light intensities revealed that flowering time in uf is dependent on daily light energy integral. Transferring plants from low to high light energy integrals at different times after sowing showed that the light-conditions effect was stage dependent, suggesting that interactions between light energy integrals and endogenous regulatory pathways affect meristem sensitivity to flowering signals.Carbohydrate analyses suggested that one of these signals could be sucrose, but other interacting factors are probably generated by the root system, as indicated by grafting experiments.The UNIFLORA gene thus appears to have a dual role in tomato: floral transition regulation and the maintenance of inflorescence meristem identity.