hypodermal wall cell layers are replaced by microsporocyte-like cells (Hord et al., 2006). 2. Subsequent to the differentiation of parietal cells and sporogenous cells promoted by SPL/NZZ and BAM1/2, a number of genes are involved in the specialization of tapetal cells, including several leucine-rich repeat RLK genes, (a) Formation of sporangial wall These cells act as sporangial initials. The number of stamens comprised by the androecium is sometimes the same as the number of petals, but often the stamens are more numerous or fewer in number than the petals. Of or relating to the hypodermis. Anther wall : The mature anther wall consists of the following layers a. Epidermis b. Endothecium c. Middle layers d. Tapetum. a. Epidermis: It is single layered and protective in function. Other articles where Anther is discussed: angiosperm: The androecium: …terminal saclike structures (microsporangia) called anthers. (2) Development of anther and formation of microspores (Pollen grains) : The young anther consists of homogenous mass of paranchymatous cells surrounded by epidermis. A very young anther is made up of homogeneous meristematic cells and more or less oblong in shape. derm n. 1. hypodermal: (hī′pə-dûr′məl) adj. hypodermic: [ hi″po-der´mik ] 1. beneath the skin; injected into subcutaneous tissues. We took advantage of the jam-1::gfp marker ( Mohler et al., 1998 ), which localizes to the adherens junctions surrounding the seam cells. Anthers typically contain four somatic cell layers encircling the sporogenous cells within each anther locule (Goldberg et al., 1993). Hypodermal definition: of the hypodermis | Meaning, pronunciation, translations and examples Lying below the epidermis. A group of hypodermal cells are present at each corner of the young anther. In maize anther primordia, the outer (L1) layer produces the epidermis . The hypodermal cells then secrete a soft and pliant new cuticle, extending new microvilli into it as it is constructed. Parietal cells lie immediately below the epidermis. 2. a subcutaneous, injection; a syringe for making such an injection. The seam cells are lateral hypodermal blast cells that donate daughter nuclei to the hypodermal syncytium after each cell division, and eventually fuse in adults (Sulston and Horvitz, 1977). Gradually the anther becomes a four-lobed structure, in each lobe hypodermal cells become differentiated by their shape and dense contents with distinct nucleus, these cells are called archespon'um or archesporial cells. In each of the four lobes, some of the hypodermal cells begin to act as archesporial initials. b. The cells undergo repeated anticlinal divisions to cope up with the rapidly enlarging internal tissues. 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