摘要:
A process of generating transgenic plants or plant cells transformed on their plastome and being devoid of a selection marker, comprising the following steps: (a) transforming plastids of a plant or plant cell with a DNA comprising: (i) a nucleotide sequence conferring replication of said DNA in a plant cell, (ii) at least one sequence of interest, (iii) sequences flanking said at least one sequence of interest necessary for stable integration of said at least one sequence of interest into the plastid genome, and (iv) a selection marker outside of said sequences flanking said sequence(s) of interest; (b) allowing integration of said at least one sequence of interest into the plastome in the presence of selective pressure; (c) allowing loss of said selection marker sequence by releasing selective pressure; and (d) recovering cells and/or plants being genetically transformed on their plastomes and being devoid of said selection marker.
摘要:
Plant carrying in its genome one or more genes coding for one or more enzymes of the early stages of the phytosterol biosynthesis pathway. The genes are capable of coding for a mevalonate kinase, a farnesyl disphosphate synthetase or a mevalonyl 5-phosphate kinase and can be the genes ERG12, ERG20 and ERG8. The plants in which these genes are introduced in a stable manner have a number of advantages including increased development, enhanced productivity and regenerative ability.
摘要:
The disclosure pertains to methods and compositions for the rapid and efficient transformation of plants. The disclosure further provides methods for producing a transgenic plant, comprising (a) transforming a cell of an explant with an expression construct comprising (i) a nucleotide sequence encoding a WUS/WOX homeobox polypeptide; (ii) a nucleotide sequence encoding a polypeptide comprising two AP2-DNA binding domains; or (iii) a combination of (i) and (ii); and (b) allowing expression of the polypeptide of (a) in each transformed cell to form a regenerable plant structure in the absence of exogenous cytokinin, wherein no callus is formed; and (c) germinating the regenerable plant structure to form the transgenic plant. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.
摘要:
The invention provides methods for identifying regenerated transformed plants and differentiated transformed plant parts, obtained without subjecting plant cells to selective conditions prior to regenerating the cells to obtain differentiated tissues. In particular embodiments, the plant cells are corn plant cells. Methods for growing and handling plants, including identifying plants that demonstrate specific traits of interest are also provided.
摘要:
The invention provides methods for identifying regenerated transformed plants and differentiated transformed plant parts, obtained without subjecting plant cells to selective conditions prior to regenerating the cells to obtain differentiated tissues. In particular embodiments, the plant cells are corn plant cells. Methods for growing and handling plants, including identifying plants that demonstrate specific traits of interest are also provided.
摘要:
A method of producing plastid transformants including a process (a) in which genes coding for proteins having a function of neutralizing nitrite toxicity are introduced into plant tissues and a process (b) in which the plant tissues into which the genes are inserted in the process (a) are cultured in a medium containing nitrite nitrogen having a concentration at which growth of wild type plant cells is suppressed or a concentration at which regeneration of wild type plants is suppressed and thus plastid transformants obtained by inserting the genes into plastid genomes are screened.
摘要:
The present disclosure relates in part to a method for identifying a soybean germline transformant from a population of soybean transformants which are comprised of a combination of soybean non-germline transformants and soybean germline transformants. The soybean non-germline transformants are identified and eliminated early in the transformation process. The soybean germline transformants are detected and selected for culturing into mature soybean plants. The method is readily applicable for screening and obtaining a soybean germline transformant at an early stage in the transformation process.
摘要:
Methods of, and compositions for, assembling one or more transcription units in a genome without a linked selectable marker or other unwanted transcription unit are provided. Also provided methods of, and compositions for, assembling one or more transcription units in a genome with a reduced frequency of vector backbone.
摘要:
The present invention provides for soybean plant and seed comprising transformation event MON89788 and DNA molecules unique to these events. The invention also provides methods for detecting the presence of these DNA molecules in a sample.
摘要:
The present invention provides a method for predicting a mantled phenotype in oil palm plants, comprising analyzing DNA material from tissue samples oil palm plants for the degree of methylation in a genomic region contained in the genome of the oil palm plant. The method of the invention can be applied for predicting a mantled phenotype in oil palm plants, in particular for predicting in young oil palms the development of a mantled phenotype in a later stage of their life cycle. Method of the invention can also be applied to identify cultures with a high risk of producing ramets that will develop a mantled phenotype. The invention thus also relates to a method to minimize the percentage of oil palm plants with a mantled phenotype in a culture. The invention also provides an isolated polynucleotide for use as a biomarker in a method to predict a mantled phenotype in oil palms.