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Bulletin of Botanical Research ›› 2023, Vol. 43 ›› Issue (1): 20-29.doi: 10.7525/j.issn.1673-5102.2023.01.003

• Systematic and Evolutionary • Previous Articles     Next Articles

Anatomical and Histochemical Features of the Pteris vittata (Pteridaceae)

Teng LI1, Cunyu ZHOU1(), Chaodong YANG1, Zhanfeng LIU2   

  1. 1.College of Horticulture and Gardening,Yangtze University,Jingzhou 434025
    2.CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones/South China Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650
  • Received:2021-12-18 Online:2023-01-20 Published:2022-12-23
  • Contact: Cunyu ZHOU E-mail:zhoucy@yangtzeu.edu.cn
  • About author:LI Teng(1995—),male,master postgraduates,mainly engaged in the study of wetland plants and ecological restoration.
  • Supported by:
    the National Key Research and Development Program of China(2021YFC3100405)


The perennial fern Pteris vittata(Pteridaceae) is a hyperaccumulator of arsenic and is used for remediation of soils contaminated by heavy metals. In order to identify the characters that the P.vittata sporophyte thrives in xeromorphic rocky environments and hyperaccumulates ions, the brightfield and epifluorescence microscopy were used to investigate the anatomical structures and histochemical features of this species. The results were as follows: (1)The structure of the rhizome, adventitious roots and leaves of P. vittata sporophytes were all primary structures, the adventitious roots had an vascular bundles, endodermis with Casparian band, lignified sclerenchyma layers, cortex, rhizodermis. (2)The rhizomes had a dictyostele, endodermis, cortex, epidermis, cuticle. (3)The stipes had a single vascular bundle with a central endodermis, cortex, sclerenchyma layers, while the epidermis had a cuticle. The pinnae had bifacial mesophyll with palisade tissue and spongy tissue, the epidermis had a cuticle. (4)The surfaces of the rhizodermis and the root hairs were pectin-rich and underlain by a lignified cortex, and permeability tests using a berberine tracer showed that these structures retained large volumes of berberine. In summary, the suberized endodermis, lignified sclerenchyma layers, bifacial mesophyll, and a cuticle, all of which reflect an adaption to xeromorphic rocky environments. The result of the berberine permeability test are consistent with the hyperaccumulation of ions by P. vittata.

Key words: aerial adventitious roots, endodermis, pectin, permeability, sclerenchyma layer

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