The cell wall-plasmalemma interface in sieve tubes of barley

  title={The cell wall-plasmalemma interface in sieve tubes of barley},
  author={Ray F. Evert and Robert J. Mierzwa},
Both thick- and thin-walled sieve tubes in leaf-blade veins of Hordeum vulgare L. exhibit a distinct, electron-opaque inner wall layer after fixation in glutaraldehyde-osmium tetroxide and staining with uranyl acetate and lead citrate. This inner wall layer is thickest at the sieve plates and lateral sieve areas where it is permeated by a labyrinth of tubules formed by the plasmalemma. Along the lateral walls between sieve areas the inner wall layer apparently is penetrated by numerous… CONTINUE READING

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