Morphological and anatomical characterization of Actinidia kolomikta (Rupr. & Maxim.) Maxim. (C3) and Amaranthus tricolor L. (C4) leaves
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Kuupäev
2022
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Autorid
Ajakirja pealkiri
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Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
Morphological and anatomical features of new cultivars with photosynthesis of
C3 (Actinidia kolomikta (Rupr. & Maxim.) Maxim. cv. ‘Narodnaya’) and C4 (Amaranthus
tricolor L. cv. ‘Valentina’) were established by light and scanning electron microscopy, as well
as energy-dispersive analysis. The leaf lamina of Actinidia kolomikta cv. ‘Narodnaya’ has a
dorsoventral anatomical structure, anomocytic stomata on the abaxial epidermis and two types of
trichomes: multicellular, uniseriate hairs and multicellular bristle-like protrusions, containing
raphids. The needle-like raphides are located in subepidermal layers along the veins. A vascular
system of petiole consists of two upper concentric bundles and the crescentic vascular strand. A
starch sheat is present. Raphides (needle-shaped and rectangular) are located in phloem and
cortical parenchyma cells, contain Ca, K, Mg, P and Si. The leaf lamina of Amaranthus tricolor
cv. ‘Valentina’ have the kranz-anatomy, dorsiventral mesophyll and contain druses. Betacyanins
are concentrated in the epidermis and mesophyll, but are not present in the bundle sheath. The
number of vascular bundles in petioles is odd-numbered and variable (from 5 to 13). Trichomes
are multicellular, uniseriate, ending in a large oval cell. Cells with betacyanins are present in the
epidermis cortex, and, rarely, the collenchyma and phloem of the petiole. Cells with betaxanthins
are absent. A starch sheat is brightly pigmented with betacyanins. The crystall sand is deposited
in the parenchyma cells of the cortex and pith of the petiole and contains Ca (mainly) and K
oxalates. Druses in the leaf lamina additionally contain Mg and P.
Kirjeldus
Received: February 1st, 2022 ; Accepted: March 27th, 2022 ; Published: April 27th, 2022 ; Correspondence: motyleva_svetlana@mail.ru
Märksõnad
Actinidia kolomikta (Rupr. & Maxim.) Maxim., Amaranthus tricolor L., leaf, mineral inclusions, morphology, betacyanins, light microscopy, scanning electron microscopy, energy dispersive analysis, articles