Altered senescence for improved forage quality
OwnerZeng-Yu Wang, Chuanen Zhou +1inventors
InventorsZeng-Yu Wang, Chuanen Zhou, Lu Han
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Abstract
The invention provides methods and compositions for enhancing agronomic properties in plants through modification of senescence. Nucleic acid constructs therefore are also described. Transgenic plants are also provided that exhibit enhanced agronomic properties. Plants described herein may be used, for example, as improved forage crops.
Claims24
A forage crop plant comprising down-regulated SGR gene function, wherein the plant exhibits an enhanced agronomic property as a result of said down-regulated SGR gene function.
A nucleic acid molecule comprising a nucleic acid sequence selected from the group consisting of:
- (a) a nucleic acid sequence that hybridizes to the sequence of SEQ ID NO:1;
- SEQ ID NO:3;
- SEQ ID NO:5;
- SEQ ID NO:19;
- SEQ ID NO:21;
- SEQ ID NO:23;
- SEQ ID NO:25;
- SEQ ID NO:27;
- SEQ ID NO:29;
- SEQ ID NO:31;
- SEQ ID NO:33;
- or SEQ ID NO:35 under conditions of 1×SSC and 65° C.;
- (b) a nucleic acid comprising SEQ ID NO:1;
- SEQ ID NO:3;
- SEQ ID NO:5;
- SEQ ID NO:19;
- SEQ ID NO:21;
- SEQ ID NO:23;
- SEQ ID NO:25;
- SEQ ID NO:27;
- SEQ ID NO:29;
- SEQ ID NO:31;
- SEQ ID NO:33;
- or SEQ ID NO:35 or a fragment thereof;
- and
- (c) a nucleic acid sequence exhibiting at least 80% sequence identity to SEQ ID NO:1;
- SEQ ID NO:3;
- SEQ ID NO:5;
- SEQ ID NO:19;
- SEQ ID NO:21;
- SEQ ID NO:23;
- SEQ ID NO:25;
- SEQ ID NO:27;
- SEQ ID NO:29;
- SEQ ID NO:31;
- SEQ ID NO:33;
- or SEQ ID NO:35;
- (d) a fragment of at least 19 contiguous nucleotides of a nucleic acid sequence of SEQ ID NO:1;
- SEQ ID NO:3;
- SEQ ID NO:5;
- SEQ ID NO:19;
- SEQ ID NO:21;
- SEQ ID NO:23;
- SEQ ID NO:25;
- SEQ ID NO:27;
- SEQ ID NO:29;
- SEQ ID NO:31;
- SEQ ID NO:33;
- or SEQ ID NO:35, or the reverse complement thereof, wherein the presence in a plant of a double stranded ribonucleotide sequence comprising at least one strand that is complementary to said fragment down-regulates SGR gene function in the plant;
- wherein the nucleic acid sequence is operably linked to a heterologous promoter sequence.
A method of conferring at least a first altered agronomic property to a plant comprising down-regulating SGR gene function in said plant relative to a plant in which SGR gene function is not down-regulated.
Dependencies are inferred from the claim text.