Abstract:
:The storage-protein content of non-zygotic and zygotic embryos of B. napus was compared, using antibodies to guantitate 12S storage protein in extracts by rocket immunoelectrophoresis. Non-zygotic embryos were induced from microspores in anther culture and on the hypocotyls of zygotic embryos in culture. All embryo-like structures were found to contain 12S storage protein, whereas preculture anthers, anthers from which embryos had been removed, and regenerated shoots did not have detectable 12S storage protein. In zygotic embryos, 12S storage protein was first detected at the cotyledon stage, but microsporic embryos contained storage protein at the globular and heart stages. Storage protein levels in microsporic and hypocotyl embryos were low relative to those in zygotic embryos. The largest microsporic embryo had a storage protein concentration of 13 μg mg(-1) fresh weight, almost 10 times lower than a mature zygotic embryo. Thus, although storage proteins are present in both zygotic and non-zygotic embryos, the timing and extent of accumulation differ.
journal_name
Plantajournal_title
Plantaauthors
Crouch MLdoi
10.1007/BF00392774subject
Has Abstractpub_date
1982-01-01 00:00:00pages
520-4issue
6eissn
0032-0935issn
1432-2048journal_volume
156pub_type
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