Płachno Bartosz J, Adamec Lubomír, Kozieradzka-Kiszkurno Małgorzata, Swiątek Piotr, Kamińska Iwona
Department of Plant Cytology and Embryology, Jagiellonian University Kraków, 9 Gronostajowa St, 30-387, Cracow, Poland,
Protoplasma. 2014 Nov;251(6):1449-54. doi: 10.1007/s00709-014-0646-8. Epub 2014 Apr 26.
Turions, which are modified shoot apices, are vegetative, dormant overwintering organs produced by perennial aquatic plants. In this study, the turion cytochemistry and ultrastructure of Aldrovanda vesiculosa, Utricularia vulgaris and U. stygia were compared with particular emphasis placed on storage substances. These three aquatic, rootless carnivorous plant species were studied at the end of their winter dormancy. At this stage, the turions of all species had starch as their main storage material. In contrast with A. vesiculosa, Utricularia turions were rich in protein storage vacuoles, and proteins were also accumulated as crystalline inclusions in the nuclei. All examined species accumulated lipid droplets in cells of epidermal glands.
块茎是经过修饰的茎尖，是多年生水生植物产生的营养性、越冬休眠器官。在本研究中，对狸藻、普通狸藻和Stygia狸藻的块茎细胞化学和超微结构进行了比较，特别关注储存物质。这三种水生、无根食虫植物物种在冬季休眠结束时进行了研究。在此阶段，所有物种的块茎都以淀粉作为主要储存物质。与狸藻不同，狸藻的块茎富含蛋白质储存液泡，蛋白质也以晶体内含物的形式在细胞核中积累。所有检测的物种在表皮腺细胞中都积累了脂滴。
