Abstract:
In a transgenic plant, a stress-responsive promoter containing CE3 and ABRE2 from HVA1 ABRC3 and CE1 from HVA22 ABRC1, directs low background expression of a gene under normal growth conditions, but is highly inducible by an abiotic stress, such as abscisic acid, dehydration, salt or cold. Compared with the wild type plant, the transgenic plant that expresses a stress-resistant gene under the control of the stress-responsive promoter is more resistant and/or tolerant to abiotic stresses and exhibits similar or higher growth rate and strength under regular or normal environmental conditions.
Abstract:
Novel gibberellin 2-oxidase (GA2ox) genes were identified. Differential expression of GA2ox genes correlated with flower development, seed germination, tiller growth and other developmental processes. In addition, the early and increased growth of tiller and adventitious root and altered root architecture caused by overexpression of GA2oxs further suggest the pleiotropic role of GA2oxs in controlling growth and architecture in plants such as rice. GA2ox5, GA2ox6 and GA2ox9 were three genes encoding class C20 GA2oxs in rice. Mutants or transgenic rice overexpressing class C20 GA2oxs exhibited a broad range of mutant phenotypes, including semi-dwarfism, increased root system and higher tiller numbers that may favor grain yield. Mutations in the conserved domain III were found to affect the physiological activity of class C20 GA2oxs. Methods are described for controlling plant growth and architecture by controlling gene expression of gibberellin 2-oxidase in the plant.
Abstract:
A novel thermophilic endo-glucanase, nucleic acid encoding the endo-glucase, and uses thereof in converting ligocellulosic material to fermentable sugars.
Abstract:
Disclosed are chill- or cold-tolerant plants and methods of making the plants. Also disclosed are methods for identifying a plant that is tolerant to chill.
Abstract:
A nucleic acid containing a glutelin gene promoter. Disclosed are transformed plant cells and transgenic plants containing a nucleic acid that includes the promoter operably linked to a sequence encoding heterologous protein. Also disclosed are methods of making the transformed plant cells and transgenic plants and methods for expressing a polypeptide.
Abstract:
A pure polypeptide containing an amino acid sequence at least 70% identical to SEQ ID NO:7, 8, or 9. The polypeptide regulates expression of a gene in a cell. Also disclosed is an isolated nucleic acid characterized in that it hybridizes under stringent conditions to SEQ ID NO:1, 2, or 3, or a complementary sequence thereof. Also within the scope of the invention are a transformed cell or a transgenic plant containing such a nucleic acid and a method of identifying a compound that modulates the activity of the polypeptide.
Abstract translation:含有与SEQ ID NO:7,8或9至少70%相同的氨基酸序列的纯多肽。该多肽调节基因在细胞中的表达。 还公开了分离的核酸,其特征在于其在严格条件下与SEQ ID NO:1,2或3或其互补序列杂交。 也在本发明的范围内的是含有这种核酸的转化细胞或转基因植物以及鉴定调节多肽活性的化合物的方法。
Abstract:
A recombinant nucleic acid containing a transcriptional enhancer from a rice αAmy8 gene, a promoter operably linked to the enhancer, and a coding sequence operably linked to the promoter and encoding a transcript. Also disclosed is a stably transformed plant cell or a transgenic plant containing a recombinant nucleic acid described above, or a similar recombinant nucleic acid with a plurality of a rice αAmy3 enhancer.
Abstract:
The invention relates to the promoter of a rice glycine-rich RNA binding protein gene and its use for expression of heterologous proteins in plant tissues, including tissues of the plant embryo and seedling.
Abstract:
Disclosed is a method for producing a transgenic angiosperm plant, particularly a monocot, comprising the step of transforming an immature embryo of an angiosperm plant with a DNA fragment expressible in said angiosperm embryo, said DNA fragment comprising a promoter region derived from an &agr;-amylase gene of a plant, and an exogenous gene encoding a desired gene product, said promoter region being inducible under a sugar-depleted or sugar-free condition to promote the expression of said gene, whereby at least a part of the resultant transgenic angiosperm plant has the ability to express said gene product. Transgenic angiosperm plants and transgenic angiosperm plant seeds are also disclosed. The transgenic angiosperm plant seeds may have application in the industrial production of alcohol, beer, glucose and the like.
Abstract:
Disclosed are a transgenic plant and a transformed plant cell containing a heterologous nucleic acid that includes a sweet potato sporamin SPO promoter operably linked to a sequence encoding a polypeptide. Also disclosed are uses of the plant or cell.