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Vegetative anatomy and endorrhizal fungal morphology of an endangered medicinal plant Gloriosa superba L.
Microscopy Research and Technique ( IF 2.5 ) Pub Date : 2022-06-25 , DOI: 10.1002/jemt.24183
Mayakrishnan Balachandar 1 , Ravichandran Koshila Ravi 1 , Thangavelu Muthukumar 1
Affiliation  

Gloriosa superba L. is of great economic importance due to its high medicinal value. Nevertheless, there is a need to reexamine species delimitation in the Gloriosa taxa as most of the species have been synonymised as G. superba. Therefore, the present study was undertaken to investigate the vegetative anatomical traits of G. superba. The leaf, scale leaf, tendril, stem, tuber, and roots of G. superba were freehand sectioned and stained with various staining solutions to record the anatomical structures. The cellular dimensions of each plant part were measured. The present study revealed the presence of intercostal and costal regions in the leaf epidermis, anomocytic stomata on abaxial surface, uniseriate epidermis covered by cuticle, undifferentiated mesophyll, and a bundle sheath surrounding vascular bundles in a leaf. Unlike the leaf, the scale leaf contains air chambers in the mesophyll region and bundle sheath is absent. The tendril had uniseriate cuticularized epidermis followed by few layers of cells developing wall thickenings, and collateral vascular bundles. The mature stem is differentiated from the young stem by the presence of bi-layered epidermis, the absence of stomata on the stem surface, and chlorenchymatous hypodermis. Air passage containing epidermis covered by thin cuticle is recorded in the stem. Starch grains are present in the tuber ground tissue. Velamen is reported for the first time in G. superba root. Scalariform perforation end plate present in root metaxylem. Roots of G. superba are colonized by arbuscular mycorrhizal and dark septate endophytic fungi. Therefore, these anatomical traits could aid in the identification of G. superba.

中文翻译:

濒危药用植物Gloriosa superba L.的植物解剖学和内生真菌形态学。

Gloriosa superba L. 由于其高药用价值而具有重要的经济意义。然而,有必要重新检查Gloriosa分类群中的物种划界,因为大多数物种已被同义为G. superba。因此,本研究旨在调查G. superba的营养解剖特征。G. superba的叶、鳞叶、卷须、茎、块茎和根徒手切片并用各种染色液染色以记录解剖结构。测量每个植物部分的细胞尺寸。本研究揭示了叶表皮中存在肋间和肋区,背面有异常细胞气孔,被角质层覆盖的单列表皮,未分化的叶肉和叶中维管束周围的束鞘。与叶子不同,鳞片叶在叶肉区域包含气室,并且不存在束鞘。卷须具有单列表皮表皮,随后几层细胞发展为壁增厚和侧支维管束。成熟茎与幼茎的区别在于存在双层表皮、茎表面没有气孔和绿叶组织。在茎中记录包含被薄角质层覆盖的表皮的空气通道。淀粉粒存在于块茎研磨组织中。Velamen 首次在G. superba根。存在于后木质部的鳞状穿孔端板。G. superba的根被丛枝菌根和深色有隔膜内生真菌定殖。因此,这些解剖特征可以帮助鉴定G. superba
更新日期:2022-06-25
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