ArticleBMC plant biology2024
Transcriptome analysis of axillary buds in low phosphorus stress and functional analysis of TaWRKY74s in wheat.
Article in BMC plant biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 112 citations in OpenAlex.
- Rhizobacteria-Induced Systemic Priming Against Fungal Pathogens Involves Hydroxycinnamic Acid Amides.Plant, cell & environment · 2026Article
- Potential unlocked: an atlas of cloned wheat genes for genome engineering and breeding.The New phytologist · 2026Review
- Transcription factors in phosphorus utilization: enhancing crop productivity and stress resilience.Planta · 2026Review
- From genes to traits: maximizing phosphorus utilization efficiency in crop plants.Frontiers in plant science · 2025Review
- Transcriptome time-course analysis unravels the regulatory networks governing ratooning decline in sugarcane.Frontiers in plant science · 2025Article
- Evolution of theInternational journal of molecular sciences · 2024Article
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7 authors at 2 institutions in 1 country.
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Abstract
backgroundWheat is one of the main grain crops in the world, and the tiller number is a key factor affecting the yield of wheat. Phosphorus is an essential element for tiller development in wheat. However, due to decreasing phosphorus content in soil, there has been increasing use of phosphorus fertilizer, while imposing risk of soil and water pollution. Hence, it is important to identify low phosphorus tolerance genes and utilize them for stress resistance breeding in wheat.
resultsWe subjected the wheat variety Kenong 199 (KN199) to low phosphorus stress and observed a reduced tiller number. Using transcriptome analysis, we identified 1651 upregulated genes and 827 downregulated of genes after low phosphorus stress. The differentially expressed genes were found to be enriched in the enzyme activity regulation related to phosphorus, hormone signal transduction, and ion transmembrane transport. Furthermore, the transcription factor analysis revealed that TaWRKY74s were important for low phosphorus tolerance. TaWRKY74s have three alleles: TaWRKY74-A, TaWRKY74-B, and TaWRKY74-D, and they all belong to the WRKY family with conserved WRKYGQK motifs. These proteins were found to be located in the nucleus, and they were expressed in axillary meristem, shoot apical meristem(SAM), young leaves, leaf primordium, and spikelet primordium. The evolutionary tree showed that TaWRKY74s were closely related to OsWRKY74s in rice. Moreover, TaWRKY74s-RNAi transgenic plants displayed significantly fewer tillers compared to wild-type plants under normal conditions. Additionally, the tiller numebr of the RNAi transgenic plants was also significantly lower than that of the wild-type plants under low-phosphorus stress, and increased the decrease amplitude. This suggestd that TaWRKY74s are related to phosphorus response and can affect the tiller number of wheat.
conclusionsThe results of this research showed that TaWRKY74s were key genes in wheat response to low phosphorus stress, which might regulate wheat tiller number through abscisic acid (ABA) and auxin signal transduction pathways. This research lays the foundation for further investigating the mechanism of TaWRKY74s in the low phosphorus environments and is significant for wheat stress resistance breeding.
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