Margońska Hanna B, Kozieradzka-Kiszkurno Małgorzata, Brzezicka Emilia, Haliński Łukasz P, Davies Kevin L, Lipińska Monika M
Department of Plant Taxonomy and Nature Conservation, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308 Gdańsk, Poland.
Department of Plant Cytology and Embryology, Faculty of Biology, University of Gdańsk, Wita Stwosza 59, 80-308 Gdańsk, Poland.
Plants (Basel). 2021 Nov 4;10(11):2373. doi: 10.3390/plants10112373.
is a large genus of mainly pantropical orchids. The lips of its flowers are upwardly directed and do not serve as landing platforms for pollinators. This role is assumed by the dorsal sepal and/or gynostemium. Information about the pollination and floral morphology of this genus is scarce. To date, no papers have been published on these topics. Field observations have revealed that the flowers are visited by small flies, midges, fruit flies, other small dipterans, ants, spiders, and mites. Preliminary observations revealed at least two forms of small liquid droplets secreted on the lip surface of species: simple secretions from epidermal cells, and cell sap released upon the rupturing of raphide-producing cells. Further research revealed that this was the first time liquid secretion was recorded in this genus. Floral secretions were subjected to sequential organic solvent extraction and gas chromatography-mass spectrometry (GC-MS). Floral parts were investigated by means of scanning (SEM) and transmission electron microscopy (TEM), and histochemical tests. The presence of liquid droplets on the lip of , the presence of a food reward, and the sequence of raphide development are reported here for the first time.
是一个主要分布于泛热带地区的大属兰花。其花朵的唇瓣向上，不作为传粉者的着陆平台。这个角色由背萼片和/或合蕊柱承担。关于该属植物的授粉和花形态的信息很少。迄今为止，尚未有关于这些主题的论文发表。野外观察表明，访问这些花朵的有小型苍蝇、蠓、果蝇、其他小型双翅目昆虫、蚂蚁、蜘蛛和螨虫。初步观察发现，在该属植物的唇瓣表面至少分泌出两种形式的小液滴：表皮细胞的简单分泌物，以及含针晶体细胞破裂后释放的细胞液。进一步研究表明，这是该属首次记录到液体分泌。对花分泌物进行了连续的有机溶剂萃取和气相色谱-质谱联用（GC-MS）分析。通过扫描电子显微镜（SEM）和透射电子显微镜（TEM）以及组织化学测试对花的各个部分进行了研究。本文首次报道了该属植物唇瓣上液滴的存在、食物奖励的存在以及针晶体发育的顺序。
