Method to transform algae, materials therefor, and products produced thereby
First Claim
1. A method to transform a chlorophyll C-containing alga, comprising introducing a recombinant molecule comprising a nucleic acid molecule encoding a dominant selectable marker operatively linked to an algal regulatory control sequence into a chlorophyll C-containing alga such that said marker is produced by the transformed alga, wherein the regulatory control sequence is selected from the group consisting of a Cyclotella cryptica acetyl-CoA carboxylase 5'"'"' untranslated regulatory control sequence, a Cyclotella cryptica acetyl-CoA carboxylase 3'"'"'-untranslated regulatory control sequence, and combinations thereof.
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Abstract
Disclosed is a method to transform chlorophyll C-containing algae which includes introducing a recombinant molecule comprising a nucleic acid molecule encoding a dominant selectable marker operatively linked to an algal regulatory control sequence into a chlorophyll C-containing alga in such a manner that the marker is produced by the alga. In a preferred embodiment the algal regulatory control sequence is derived from a diatom and preferably Cyclotella cryptica. Also disclosed is a chimeric molecule having one or more regulatory control sequences derived from one or more chlorophyll C-containing algae operatively linked to a nucleic acid molecule encoding a selectable marker, an RNA molecule and/or a protein, wherein the nucleic acid molecule does not normally occur with one or more of the regulatory control sequences. Further specifically disclosed are molecules pACCNPT10, pACCNPT4.8 and pACCNPT5.1. The methods and materials of the present invention provide the ability to accomplish stable genetic transformation of chlorophyll C-containing algae.
163 Citations
31 Claims
- 1. A method to transform a chlorophyll C-containing alga, comprising introducing a recombinant molecule comprising a nucleic acid molecule encoding a dominant selectable marker operatively linked to an algal regulatory control sequence into a chlorophyll C-containing alga such that said marker is produced by the transformed alga, wherein the regulatory control sequence is selected from the group consisting of a Cyclotella cryptica acetyl-CoA carboxylase 5'"'"' untranslated regulatory control sequence, a Cyclotella cryptica acetyl-CoA carboxylase 3'"'"'-untranslated regulatory control sequence, and combinations thereof.
- 22. A chimetic molecule comprising one or more C. cryptica acetyl-CoA carboxylase regulatory control sequences operatively linked to a nucleic acid molecule encoding a compound selected from the group consisting of a selectable marker, an RNA molecule and a protein, wherein said nucleic acid molecule is not naturally associated with one or more of said regulatory control sequences, and wherein said regulatory control sequences are selected from the group consisting of 5'"'"'-untranslated regulatory control sequences, 3'"'"'-untranslated regulatory control sequences, and combinations thereof.
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29. A recombinant chlorophyll C-containing algal strain, wherein said strain is selected from the group consisting of:
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(a) a chlorophyll C-containing algal strain transformed with a chimeric molecule comprising one or more C. cryptica acetyl-CoA carboxylase regulatory control sequences operatively linked to a nucleic acid molecule encoding a compound selected from the group consisting of a selectable marker, an RNA molecule and a protein, wherein said nucleic acid molecule is not naturally associated with one or more of said regulatory control sequences; and (b) chlorophyll C-containing algal strain transformed with at least one additional copy of a homologous nucleic acid molecule;
wherein the regulatory control sequences are selected from the group consisting of a Cyclotella cryptica acetyl-CoA carboxylase 5'"'"'-untranslated regulatory control sequence, a Cyclotella cryptica acetyl-CoA carboxylase 3'"'"'-untranslated regulatory control sequence, and combinations thereof. - View Dependent Claims (30)
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31. An isolated nucleic acid molecule comprising a nucleic acid sequence selected from the group consisting of sequences identified as SEQ ID NO:
- 1, SEQ ID NO;
2, SEQ ID NO;
3 and homologues thereof wherein the regulatory control sequences of said homologues are selected from the group consisting of a Cyclotella cryptica acetyl-CoA carboxylase 5'"'"'-untranslated regulatory control sequence, a Cyclotella cryptica acetyl-CoA carboxylase 3'"'"'-untranslated regulatory control sequence, and combinations thereof;
said homologues having a regulatory function of the nucleic acid sequence SEQ ID NO;
1, SEQ ID NO;
2 or SEQ ID NO;
3.
- 1, SEQ ID NO;
Specification