摘要:
Methods and compositions for modulating plant development are provided. Polynucleotide sequences encoding ZmSNAC polypeptides are provided, as are the amino acid sequences of the encoded polypeptides. The sequences can be used in a variety of methods including modulating root development, modulating floral development, modulating leaf and/or shoot development, modulating senescence, modulating seed size and/or weight, and modulating tolerance of plants to abiotic stress. Transformed plants, plant cells, tissues, and seed are also provided. A stress-inducible ZmSNAC1 promoter is also provided.
摘要:
Compositions and methods for modulating abscisic acid (ABA) perception and signal transduction in developing seed are provided. The methods and compositions find use in increasing yield in plants, particularly under abiotic stress. Compositions comprise genetic constructs known to affect ABA sensitivity, particularly ABA biosynthetic mutants and fragments and variants thereof.
摘要:
Compositions and methods for regulating expression of heterologous nucleotide sequences in a plant are provided. Compositions include a novel nucleotide sequence for a maize actin depolymerization factor 4 promoter. Also provided is a method for expressing a heterologous nucleotide sequence in a plant using a promoter sequence disclosed herein.
摘要:
Compositions and methods for suppressing the shade-avoidance response of plants and improving plant yield are provided. Compositions of the invention include an early flowering 3 (ELF3) maize gene, the promoter for this gene, an Arabidopsis basic helix-loop-helix transcription factor (bHLH-041), and fragments and variants thereof. The ELF3 promoter sequence is useful for driving expression of polynucleotides of interest in a plant. The ELF3 and bHLH-041 sequences of the invention, or variants and fragments thereof, are provided in expression cassettes for use in manipulating expression of the ELF3 and bHLH-041 genes. By increasing expression of ELF3 and/or suppressing expression of bHLH-041, the methods of the invention provide for altered response of a plant to light quality and suppression of the high-density-invoked survival mode of development. The invention thus provides methods for growing crop plants at high population densities for yield enhancement. Transformed plants having the altered shade-avoidance phenotype of the invention, and seeds of said plants, are also provided.
摘要:
Compositions and methods for modulating flower organ development, leaf formation, phototropism, apical dominance, fruit development, initiation of roots and for increasing yield in a plant are provided. The compositions include an AP2 transcription factor sequence. Compositions of the invention comprise amino acid sequences and nucleotide sequences selected from SEQ ID NOS: 1-11 as well as variants and fragments thereof. Nucleotide sequences encoding the AP2 transcription factors are provided in DNA constructs for expression in a plant of interest are provided for modulating the level of an AP2 transcription factor sequence in a plant or a plant part are provided. The methods comprise introducing into a plant or plant part a heterologous polynucleotide comprising an AP2 transcription factor sequence of the invention. The level of the AP2 transcription factor polypeptide can be increased or decreased. Such method can be used to increase the yield in plants; in one embodiment, the method is used to increase grain yield in cereals.
摘要翻译:提供了用于调节花器官发育,叶形成,光向性,顶端优势,果实发育,根的起始和增加植物产量的组合物和方法。 组合物包括AP2转录因子序列。 本发明的组合物包含选自SEQ ID NO:1-11的氨基酸序列和核苷酸序列以及其变体和片段。 在DNA构建体中提供了编码AP2转录因子的核苷酸序列,以提供用于在植物中表达的植物中的表达的植物或植物部分中的AP2转录因子序列的水平。 所述方法包括向植物或植物部分引入包含本发明的AP2转录因子序列的异源多核苷酸。 可以增加或减少AP2转录因子多肽的水平。 这种方法可以用于提高植物的产量; 在一个实施方案中,该方法用于增加谷物中的谷物产量。