Articles
ANATOMICAL CHARACTERISTICS OF LEAF MESOPHYLL ON ROSA RUGOSA AND THEIR HYBRID PLANT
Article number
870_16
Pages
137 – 142
Language
English
Abstract
The variation in structure of the leaf mesophyll tissue on Rosa rugosa and their hybrid plants were anatomically compared.
In R. rugosa, the epidermal cells composed large, thick cuticle with wax layers on the abaxial and adaxial side.
The lower epidermal cells are significantly developed with enlarged, tightly packed.
These cells can be brought about by various stresses, such as drought, waterlogging, salt damage, excess heat, damage to the leaf by pest and other agents.
Especially they may also act as a water storage tissue in plants.
The palisade cells found tightly packed, and connected to the bundle sheath cells at the level of the phloem.
In contrast to the R. rugosa, the thin leaves have long palisade cells that occupy approximately one-third to one-half of the blade thickness in hybrid plants.
In these leaves, palisade cells and spongy mesophyll are not clearly differentiated.
These cells are loosely arranged and contained intercellular spaces.
Epidermal cells on both side flattened and composed thin layers compared to the R. rugosa. In the leaves of R. rugosa, volatile organic compounds (VOCs) such as Rugosal A or pectic substances are observed throughout in the epidermal cells.
They stained in red-purplish color with toluidine blue-O. We conclude that the wild rose plant, R. rugosa may be a useful germplasm source for the plant breeders.
In R. rugosa, the epidermal cells composed large, thick cuticle with wax layers on the abaxial and adaxial side.
The lower epidermal cells are significantly developed with enlarged, tightly packed.
These cells can be brought about by various stresses, such as drought, waterlogging, salt damage, excess heat, damage to the leaf by pest and other agents.
Especially they may also act as a water storage tissue in plants.
The palisade cells found tightly packed, and connected to the bundle sheath cells at the level of the phloem.
In contrast to the R. rugosa, the thin leaves have long palisade cells that occupy approximately one-third to one-half of the blade thickness in hybrid plants.
In these leaves, palisade cells and spongy mesophyll are not clearly differentiated.
These cells are loosely arranged and contained intercellular spaces.
Epidermal cells on both side flattened and composed thin layers compared to the R. rugosa. In the leaves of R. rugosa, volatile organic compounds (VOCs) such as Rugosal A or pectic substances are observed throughout in the epidermal cells.
They stained in red-purplish color with toluidine blue-O. We conclude that the wild rose plant, R. rugosa may be a useful germplasm source for the plant breeders.
Authors
T. Tabuchi, N. Hiramatsu, Y. Hida
Keywords
bundle-sheath extension, germplasm resources, Hama-nashi, Hama-nasu, rose, Rosa rugosa, Rugosal A, salt tolerance, volatile organic chemicals
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