Cell architecture during gametophytic and embryogenic microspore development in Brassica napus L.
نویسندگان
چکیده
منابع مشابه
Isolation of an embryogenic line from non-embryogenic Brassica napus cv. Westar through microspore embryogenesis
Brassica napus cultivar Westar is non-embryogenic under all standard protocols for induction of microspore embryogenesis; however, the rare embryos produced in Westar microspore cultures, induced with added brassinosteroids, were found to develop into heritably stable embryogenic lines after chromosome doubling. One of the Westar-derived doubled haploid (DH) lines, DH-2, produced up to 30% the ...
متن کاملDynamics of Calcium during In vitro Microspore Embryogenesis and In vivo Microspore Development in Brassica napus and Solanum melongena
Calcium is widely known to have a role as a signaling molecule in many different processes, including stress response and activation of the embryogenic program. However, there are no direct clues about calcium levels during microspore embryogenesis, an experimental process that combines a developmental switch toward embryogenesis and the simultaneous application of different stressing factors. ...
متن کاملStorage oil breakdown during embryo development of Brassica napus (L.).
In this study it is shown that at least 10% of the major storage product of developing embryos of Brassica napus (L.), triacylglycerol, is lost during the desiccation phase of seed development. The metabolism of this lipid was studied by measurements of the fate of label from [1-(14)C]decanoate supplied to isolated embryos, and by measurements of the activities of enzymes of fatty acid cataboli...
متن کاملTriacylglycerol Bioassembly in Microspore-Derived Embryos of Brassica napus L. cv Reston.
Erucic acid (22:1) was chosen as a marker to study triacylglycerol (TAG) biosynthesis in a Brassica napus L. cv Reston microspore-derived (MD) embryo culture system. TAGs accumulating during embryo development exhibited changes in acyl composition similar to those observed in developing zygotic embryos of the same cv, particularly with respect to erucic and eicosenoic acids. However, MD embryos...
متن کاملNuclear bodies domain changes with microspore reprogramming to embryogenesis.
We analysed the presence of nuclear bodies and particularly Cajal bodies during representative stages of gametophytic and haploid embryogenic development in isolated microspore and anther cultures of a model system (Brassica napus cv. Topas) and a recalcitrant species (Capsicum annuum L. var. Yolo Wonder B). The nuclear bodies domain is involved on several important roles on nuclear metabolism,...
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ژورنال
عنوان ژورنال: Acta Physiologiae Plantarum
سال: 2005
ISSN: 0137-5881,1861-1664
DOI: 10.1007/s11738-005-0070-y