This disclosure provides tobacco plants that exhibit altered photosynthesis as well as methods of making and using such plants.

Methods and materials for modulating low-nitrogen tolerance levels in plants are disclosed. For example, nucleic acids encoding low nitrogen tolerance-modulating polypeptides are disclosed as well as methods for using such nucleic acids to transform plant cells. Also disclosed are plants having increased.sub.[RCL2] low-nitrogen tolerance levels and plant products produced from plants having increased low-nitrogen tolerance levels.

The present invention relates to compositions and methods for improving yield, yield stability, and/or drought stress tolerance in plants. Plants and/or plant parts identified, selected and/or produced using compositions and methods of the present invention are also provided.

The present invention generally relates to the manipulation of fluids using acoustic waves such as surface acoustic waves. In some aspects, one fluid may be introduced into another fluid via application of suitable acoustic waves. For example, a fluid may be added or injected into another fluid by applying acoustic waves where, in the absence of the acoustic waves, the fluid cannot be added or injected, e.g., due to the interface or surface tension between the fluids. Thus, for example, a fluid may be injected into a droplet of another fluid. Other embodiments of the invention are generally directed to systems and methods for making or using such systems, kits involving such systems, or the like.

Provided are isolated polynucleotides and nucleic acid constructs which comprise a nucleic acid sequence at least 80% identical to a nucleic acid sequence selected form the group consisting of SEQ ID NOs: 1-219, 367-5628, 9688-9700, and 9709-9752; and isolated polypeptides which comprise an amino acid sequence at least 80% homologous to an amino acid sequence selected from the group consisting of SEQ ID NOs: 220-366, 5629-9400, 9701-9708, and 9753-9796. Also provided are transgenic cells and plants expressing same and methods of using same for increasing yield, growth rate, biomass, vigor, oil content, seed yield, fiber yield, fiber quality, nitrogen use efficiency, and/or abiotic stress of a plant.

Provided are methods of increasing yield, biomass, growth rate, vigor, and/or abiotic stress tolerance of a plant by expressing within the plant an exogenous polynucleotide comprising a nucleic acid sequence at least 80% identical to SEQ ID NO: 908 or 71; or an exogenous polynucleotide encoding a polypeptide at least 80% identical to SEQ ID NO: 176.

The invention provides a wheat cell, part, tissue culture or whole plant comprising at least one disrupted KRP gene of the present invention. The present invention also provides methods of increasing weight, size, and/or number of one or more organs, and/or yield of a wheat plant by utilizing the disrupted KRP genes of the present invention. Furthermore, methods of breeding wheat plants to produce new wheat plants having increased weight, size, and/or number of one or more organs, and/or yield are provided. The present invention provides isolated Kinase Inhibitor Protein (KIP) Related Protein (KRP) polynucleotide sequences and isolated KRP polypeptide sequences and methods of their use.

Transgenic plants that have enhanced yield-related traits, such as increased seed oil production, are produced by genetically engineering the plants to down-regulate the expression of at least one BPM protein. Such transgenic plants can, for example, be cultivated and yield higher seed oil production than control plants which have not been genetically engineered for down regulation of a BPM protein.

The present invention discloses a method for increasing the sensitivity of a plant to a gibberellin inhibitor. The method for increasing the sensitivity of a plant to a gibberellin inhibitor provided by the present invention comprises the step of introducing an encoding gene of a protein into a recipient plant to obtain a transgenic plant; the transgenic plant has increased sensitivity to the gibberellin inhibitor compared to the recipient plant; the protein is a protein of the following a) or b) or c): a) a protein whose amino acid sequence is set forth in positions 1-821 of SEQ ID NO: 1; b) a protein whose amino acid sequence is set forth in SEQ ID NO: 1; c) a fusion protein obtained by attaching tag(s) to the N-terminus or/and C-terminus of a) or b). The experiments prove that the method for increasing the sensitivity of a plant to a gibberellin inhibitor of the present invention can be used to increase the sensitivity of plants to gibberellin inhibitors, and the plant height of plants can be regulated by the plant height-related protein HRP of the present invention.

Provided herein are compositions and methods for producing transgenic plants. In specific embodiments, transgenic plants comprise a construct comprising a polynucleotide encoding CCA1, GLK1 or bZIP1, operably linked to a plant-specific promote, wherein the CCA1, GLK1 or bZIP1 is ectopically overexpressed in the transgenic plants, and wherein the promoter is optionally a constitutive or inducible promoter. In other embodiments, transgenic plants in which express a lower level of CCA1, GLK1 or bZIP1 are provided. Also provided herein are commercial products (e.g., pulp, paper, paper products, or lumber) derived from the transgenic plants (e.g., transgenic trees) produced using the methods provided herein.