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SPOROCYTIC CONTROL OF SPORE WALL PATTERN IN LIVERWORTS
Author(s) -
Brown Roy C.,
Lemmon Betty E.,
Renzaglia Karen S.
Publication year - 1986
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1986.tb12079.x
Subject(s) - biology , meiosis , spore , ploidy , botany , prophase , nucleus , morphogenesis , sporogenesis , transcription (linguistics) , genetics , microbiology and biotechnology , gene , linguistics , philosophy
Extracellular material preferentially deposited in the sporocyte wall during meiotic prophase serves as an exine precursor in development of the distinctively patterned spore exines of the liverworts Haplomitrium hookerii and Pallavicinia lyellii. This unusual occurrence of prepat‐terning of the exine in prophasic sporocytes provides clear structural evidence that control of wall patterning is an integral part of a genetic program triggered in the sporocyte and, at least in some cases, does not depend upon genetic transcription in the haploid nucleus following meiosis.