摘要:
The present invention concerns a method for improving growth characteristics of plants by increasing activity and/or expression in a plant of an SnRK2 kinase or a homologue thereof. One such method comprises introducing into a plant an SnRK2 nucleic acid molecule or functional variant thereof. The invention also relates to transgenic plants having improved growth characteristics, which plants have modulated expression of a nucleic acid encoding an SnRK2 kinase. The present invention also concerns constructs useful in the methods of the invention.
摘要:
The invention concerns a method for increasing plant yield by introducing into a plant a cyclin A nucleic acid, preferably encoding a cyclin A protein, which cyclin A nucleic acid is operably linked to a seed-preferred promoter. By using this method, plant yield may be increased in optimal and sub-optimal growing conditions. The method results in plants having increased yield relative to corresponding wild type plants and relative to transgenic plants constitutively expressing cyclin A.
摘要:
The present invention concerns a method for modifying the growth characteristics of plants by modulating expression in a plant of a B-type CDK nucleic acid and/or modulating activity and/or levels in a plant of a B-type CDK protein. The invention also relates to transgenic plants having modified growth characteristics, which plants have modulated expression of a B-type CDK nucleic acid and/or modulated activity and/or levels in a plant of a B-type CDK protein relative to expression, activity and/or levels in corresponding wild-type plants. The present invention also provides a novel screening method for the identification of mutant CDKs having enhanced CDK activity relative to corresponding non-mutated CDKs. The present invention also provides a novel screening method for the identification of non-active CDKs that are able to bind to CKIs (cyclin dependent kinase inhibitors). The invention also provides mutant CDKs obtainable by the screening methods according to the invention.
摘要:
The present invention relates to methods for stimulating root growth and/or enhancing the formation of lateral or adventitious roots and/or altering root geotropism comprising expression of a cytokinin oxidase or comprising expression of another protein that reduces the level of active cytokinins in plants or plant parts. Also provided by the present invention are methods for increasing seed size and/or weight, embryo size and/or weight, and cotyledon size and/or weight. The methods comprise expression of a cytokinin oxidase or expression of another protein that reduces the level of active cytokinins in plants or plant parts. Methods and compositions for increasing seed yield are also provided. The invention also relates to isolated plant cytokinin oxidase proteins, nucleic acid sequences encoding cytokinin oxidase proteins as well as to vectors, host cells, transgenic cells and plants comprising such sequences. The use of these sequences for improving root-related characteristics including increasing yield and/or enhancing early vigor and/or modifying root/shoot ratio and/or improving resistance to lodging and/or increasing drought tolerance and/or promoting in vitro propagation of explants and/or modifying cell fate and/or plant development and/or plant morphology and/or plant biochemistry and/or plant physiology, is also provided. The invention also relates to methods for identifying and obtaining proteins and compounds interacting with cytokinin oxidase proteins as well as the use of such proteins and/or compounds as plant growth regulators or herbicides.
摘要:
The present invention relates to a method for modifying plant growth and development processes by affecting cell cycle regulation comprising modulating expression of members of the plant E2F transcription factor family. More specific the invention relates to methods for stimulating cell division in a plant. The invention further relates to transgenic plants produced by the methods of the invention having altered plant growth and development characteristics compared to their isogenic counterparts. Preferably, the plant characteristics modified by the present invention include enlarged cotyledons, enhanced growth rate, stress resistance and seedling survival, more cells, more tillers, more panicles.