ArticlePlant molecular biology2012
Divergent functions of orthologous NAC transcription factors in wheat and rice.
Article in Plant molecular biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.
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43 citing papers in PubMed, 97 citations in OpenAlex.
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- Genome-wide identification and characterization of greenbug-inducible NAC transcription factors in sorghum.Molecular biology reports · 2024Article
- Transcription Factors and Their Regulatory Roles in the Male Gametophyte Development of Flowering Plants.International journal of molecular sciences · 2024Review
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- Transcriptome profiling of flower buds of male-sterile lines provides new insights into male sterility mechanism in alfalfa.BMC plant biology · 2022Article
- Identification of QTLs for Grain Protein Content in Russian Spring Wheat Varieties.Plants (Basel, Switzerland) · 2022Article
- MdNAC4 Interacts With MdAPRR2 to Regulate Nitrogen Deficiency-Induced Leaf Senescence in Apple (Frontiers in plant science · 2022Article
- The biotechnological importance of the plant-specific NAC transcription factor family in crop improvement.Journal of plant research · 2021Review
- Evolutionary Divergence and Biased Expression of NAC Transcription Factors in Hexaploid Bread Wheat (Plants (Basel, Switzerland) · 2021Article
- Iron Biofortification in Rice: An Update on Quantitative Trait Loci and Candidate Genes.Frontiers in plant science · 2021Review
- Functional Validation ofInternational journal of molecular sciences · 2020Article
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- Potential Implications of Interactions between Fe and S on Cereal Fe Biofortification.International journal of molecular sciences · 2020Review
- The barley stripe mosaic virus expression system reveals the wheat C2H2 zinc finger protein TaZFP1B as a key regulator of drought tolerance.BMC plant biology · 2020Article
- Identification of Transcription Factors Regulating Senescence in Wheat through Gene Regulatory Network Modelling.Plant physiology · 2019Article
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Authors and funding
9 authors at 4 institutions in 3 countries.
Funding
Abstract
The wheat GPC-B1 gene located on chromosome 6B is an early regulator of senescence and affects remobilization of protein and minerals to the grain. GPC-B1 is a NAC transcription factor and has a paralogous copy on chromosome 2B in wheat, GPC-B2. The closest rice homolog to both wheat GPC genes is Os07g37920 which is located on rice chromosome 7 and is colinear with GPC-B2. Since rice is a diploid species with a sequenced genome, we initiated the study of Os07g37920 to develop a simpler model to study senescence and mineral remobilization in cereals. We developed eleven independent RNA interference transgenic rice lines (Os07g37920-RNAi) and 10 over-expressing transgenic lines (Os07g37920-OE), but none of them showed differences in senescence. Transgenic Os07g37920-RNAi rice plants had reduced proportions of viable pollen grains and were male-sterile, but were able to produce seeds by cross pollination. Analysis of the flower morphology of the transgenic rice plants showed that anthers failed to dehisce. Transgenic Os07g37920-OE lines showed no sterility or anther dehiscence problems. Os07g37920 transcript levels were higher in stamens compared to leaves and significantly reduced in the transgenic Os07g37920-RNAi plants. Wheat GPC genes showed the opposite transcription profile (higher transcript levels in leaves than in flowers) and plants carrying knock-out mutations of all GPC-1 and GPC-2 genes exhibited delayed senescence but normal anther dehiscence and fertility. These results indicate a functional divergence of the homologous wheat and rice NAC genes and suggest the need for separate studies of the function and targets of these transcription factors in wheat and rice.
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