ArticleJournal of experimental botany2015
HvEXPB7, a novel β-expansin gene revealed by the root hair transcriptome of Tibetan wild barley, improves root hair growth under drought stress.
Article in Journal of experimental botany, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.
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62 citing papers in PubMed, 134 citations in OpenAlex.
- Root hair plasticity in cereals under abiotic stress.The New phytologist · 2026Review
- Endophytic Flavobacterium promotes root hair development and enhances drought tolerance via an ERF-CEP5 hormonal regulatory module.Nature plants · 2026Article
- Recent Advances in Histone Methylation in Plant Adaptation to Salinity.Plants (Basel, Switzerland) · 2026Review
- Molecular and Genetic Regulation of Crop Root System Architecture in Drought Resilience.Plants (Basel, Switzerland) · 2026Review
- Genome-wide characterization and transcriptional profiling of the glycerol-3-phosphate acyltransferase (GPAT) family in barley reveals the role of HvGPAT1 in low nitrogen tolerance.BMC plant biology · 2026Article
- Identification, Transcriptome, and Proteome Analysis of Expansin-like Subfamilies in the Storage Root AcrossPlants (Basel, Switzerland) · 2026Article
- Root system architecture and drought adaptation: emerging tools and genetic insights.Frontiers in plant science · 2026Review
- Overexpression of the Wild Soybean Expansin GenePlants (Basel, Switzerland) · 2025Article
- Article
- Root Hair Development Is Suppressed by Long-Term Mild Heat Through Down-Regulation of RHD6 and RHD6-like Genes.Plant, cell & environment · 2025Article
- Inherited endurance: deciphering genetic associations of transgenerational and intergenerational heat stress memory in barley.Plant molecular biology · 2025Article
- Effects of salinity stress on morphological structure, physiology, and mRNA expression in different wheat (Frontiers in genetics · 2025Article
- Function diversity of the expansin subfamily genes inFrontiers in plant science · 2025Article
- Article
- Barley stripe mosaic virus-induced gene silencing for functional validation of abiotic stress in barley.Functional & integrative genomics · 2024Review
- A Study on the Functional Identification of Overexpressing Winter Wheat Expansin GeneInternational journal of molecular sciences · 2024Article
- Overexpression of Wild Soybean Expansin GenePlants (Basel, Switzerland) · 2024Article
- Transcriptional convergence after repeated duplication of an amino acid transporter gene leads to the independent emergence of the black husk/pericarp trait in barley and rice.Plant biotechnology journal · 2024Article
- Heat shock proteinPhysiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- Genome-Wide Identification, Phylogenetic and Expression Analysis of Expansin Gene Family inInternational journal of molecular sciences · 2024Article
2 more citing papers are in PubMed but not listed here.
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7 authors at 2 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
Tibetan wild barley is a treasure trove of useful genes for crop improvement including abiotic stress tolerance, like drought. Root hair of single-celled structures plays an important role in water and nutrition uptake. Polyethylene-glycol-induced drought stress hydroponic/petri-dish experiments were performed, where root hair morphology and transcriptional characteristics of two contrasting Tibetan wild barley genotypes (drought-tolerant XZ5 and drought-sensitive XZ54) and drought-tolerant cv. Tadmor were compared. Drought-induced root hair growth was only observed in XZ5. Thirty-six drought tolerance-associated genes were identified in XZ5, including 16 genes specifically highly expressed in XZ5 but not Tadmor under drought. The full length cDNA of a novel β-expansin gene (HvEXPB7), being the unique root hair development related gene in the identified genes, was cloned. The sequence comparison indicated that HvEXPB7 carried both DPBB_1 and Pollon_allerg_1 domains. HvEXPB7 is predominantly expressed in roots. Subcellular localization verified that HvEXPB7 is located in the plasma membrane. Barley stripe mosaic virus induced gene silencing (BSMV-VIGS) of HvEXPB7 led to severely suppressed root hairs both under control and drought conditions, and significantly reduced K uptake. These findings highlight and confer the significance of HvEXPB7 in root hair growth under drought stress in XZ5, and provide a novel insight into the genetic basis for drought tolerance in Tibetan wild barley.
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