Abstract:
:Homogeneous populations of developing microspores and pollen from anthers of lily (Lilium longiflorum Thumb.) and tobacco (Nicotiana tabacum L.) show a continuous production of biomass, reaching a maximum in young pollen. The rate of RNA synthesis was 460 fg · h(-1) in young binucleate cells, 138 fg · h(-1) in late binucleate cells and 56 fg · h(-1) in microspores. The mRNA population in developing pollen can be separated into three groups. In the first group, certain types of mRNAs are present at a constant level during all stages of development. A second group is characteristic of young pollen and increases quantitatively until anthesis. A third group is seen transiently; to this belong mRNAs present only before mitosis or at a distinct cell stage after mitosis. Some of the translation products of this latter group of mRNAs showed similarities between lily and tobacco on two-dimensional gels in respect of molecular weight and isolectric point, indicating that those mRNAs and proteins play a role in the regulation of pollen development.
journal_name
Plantajournal_title
Plantaauthors
Schrauwen JA,de Groot PF,van Herpen MM,van der Lee T,Reynen WH,Weterings KA,Wullems GJdoi
10.1007/BF00197125subject
Has Abstractpub_date
1990-09-01 00:00:00pages
298-304issue
2eissn
0032-0935issn
1432-2048journal_volume
182pub_type
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