Definitions
from The Century Dictionary.
- noun In botany: In Characeæ, the product of the development and division of the oöspore, upon which the characeous plant develops as a lateral bud.
- noun In Archegoniatæ, the product of the development and division of the oöspore before the differentiation of the embryo.
- noun In phanerogams, same as
suspensor .
from the GNU version of the Collaborative International Dictionary of English.
- noun The series of cells formed in the ovule of a flowering plant after fertilization, but before the formation of the embryo.
- noun The primary growth from the spore in certain cryptogamous plants.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun botany A
cluster ofcells in theovule of afertilized flowering plant that has not yet formed into anembryo - noun botany The
protonema ofmosses
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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In this study, we developed a procedure for isolating the in vivo apical and basal cells of the two-celled proembryo from tobacco (Nicotiana tabacum), and then performed a comparative transcriptome analysis of the two cells by suppression subtractive hybridization (SSH) combined with macroarray screening.
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However, because of the difficulty to isolate the in vivo apical and basal cells of two-celled proembryo from ovule and ovary in higher plants, the transcriptome analysis of them hasn't been reported.
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The results show that some differential or specific transcripts in the apical and basal cells of two-celled proembryo were successfully isolated, and the identification of these transcripts reveals that these two daughter cells possess distinct transcriptional profiles after zygote division.
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