Plant nuclear factor Y (NF-Y) B subunits confer drought tolerance and lead to improved corn yields on water-limited acres
| Autor: | Neal I. Gutterson, Jacqueline E. Heard, Donald E. Nelson, Brendan Hinchey, Don R. Maszle, Katherine Krolikowski, Stanton B. Dotson, David C. Warner, Tom R. Adams, Oliver J. Ratcliffe, Paolo Castiglioni, Meghan G. Donnarummo, Peter P. Repetti, Robert A. Creelman, Robert J. Bensen, Roger D. Canales, Don C. Anstrom, Roderick W. Kumimoto, Jingrui Wu |
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| Rok vydání: | 2007 |
| Předmět: |
Stomatal conductance
Molecular Sequence Data Drought tolerance Arabidopsis Biology Photosynthesis Zea mays Disasters Crop Oligonucleotide Array Sequence Analysis Plant Proteins Multidisciplinary Genetically modified maize Arabidopsis Proteins fungi Water food and beverages Wilting Genomics Biological Sciences Plants Genetically Modified biology.organism_classification Protein Subunits CCAAT-Binding Factor Agronomy Functional genomics Transcription Factors |
| Zdroj: | Proceedings of the National Academy of Sciences. 104:16450-16455 |
| ISSN: | 1091-6490 0027-8424 |
| Popis: | Commercially improved crop performance under drought conditions has been challenging because of the complexity of the trait and the multitude of factors that influence yield. Here we report the results of a functional genomics approach that identified a transcription factor from the nuclear factor Y (NF-Y) family, AtNF-YB1 , which acts through a previously undescribed mechanism to confer improved performance in Arabidopsis under drought conditions. An orthologous maize transcription factor, ZmNF-YB2, is shown to have an equivalent activity. Under water-limited conditions, transgenic maize plants with increased ZmNF-YB2 expression show tolerance to drought based on the responses of a number of stress-related parameters, including chlorophyll content, stomatal conductance, leaf temperature, reduced wilting, and maintenance of photosynthesis. These stress adaptations contribute to a grain yield advantage to maize under water-limited environments. The application of this technology has the potential to significantly impact maize production systems that experience drought. |
| Databáze: | OpenAIRE |
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