Development of plastids in pollen and tapetum of rye-grass, Lolium perenne L

Pacini, E., Taylor, P. E., Singh, M. B. and Knox, R. B. 1992, Development of plastids in pollen and tapetum of rye-grass, Lolium perenne L, Annals of botany, vol. 70, no. 2, pp. 179-188.

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Title Development of plastids in pollen and tapetum of rye-grass, Lolium perenne L
Author(s) Pacini, E.
Taylor, P. E.ORCID iD for Taylor, P. E.
Singh, M. B.
Knox, R. B.
Journal name Annals of botany
Volume number 70
Issue number 2
Start page 179
End page 188
Total pages 10
Publisher Oxford University Press
Place of publication Oxford , England
Publication date 1992-08
ISSN 0305-7364
Keyword(s) elaioplasts
plastid division
plastid differentiation
starch granules
lolium perenne
Summary Proplastids of both tapetal cells and microsporocytes were present early in anther development. Tapetal proplastids differentiated—probably into elaioplasts—at late microspore stage. The tapetal cytoplasm was completely resorbed by early tricellular pollen stage. Microspore proplastids differentiated into amyloplasts at early bicellular stage, and were present in both vegetative and generative cells. In the generative cell, the amyloplasts were ephemeral and apparently degenerated within autophagic vacuoles. Plastids were absent from sperm cells. Vegetative cell amyloplasts increased in number apparently by fission such that one amyloplast produced one amyloplast and one proplastid per division. Mature pollen grains were estimated to contain between 550 and 820 amyloplasts with only one starch granule per plastid.
Language eng
Field of Research 059999 Environmental Sciences not elsewhere classified
Socio Economic Objective 970105 Expanding Knowledge in the Environmental Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
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