ArticleAnnals of botany2020
The SAUR41 subfamily of SMALL AUXIN UP RNA genes is abscisic acid inducible to modulate cell expansion and salt tolerance in Arabidopsis thaliana seedlings.
Article in Annals of botany, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.
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41 citing papers in PubMed, 102 citations in OpenAlex.
- Article
- Complex Interplay of Tandem, Segmental, Whole Genome Duplication, and Re-organization Drives Expansion of SAUR Gene Family in Brassicaceae.Biochemical genetics · 2026Article
- Integrated transcriptomic and Metabolomic insights into the dynamic changes in gene expression and secondary metabolites in gibberellin-treated grape berries.Food chemistry. Molecular sciences · 2026Article
- Small auxin-up RNA promotesFrontiers in plant science · 2026Article
- Genome-wide identification ofPeerJ · 2026Article
- Natural variants ofScience advances · 2025Article
- Integrating 3D imaging, GWAS, and single-cell transcriptome approaches to elucidate root system architecture in Populus.Plant physiology · 2025Article
- Article
- Genome-Wide Identification and Expression Analysis of Auxin-ResponsivePlants (Basel, Switzerland) · 2025Article
- Plant Growth-Promoting Rhizobacteria Enhance Sweet Cherry Root System Development Through the Production of Volatile Organic Compounds.Foods (Basel, Switzerland) · 2025Article
- PtrSAUR32 Interacts with PtrPP2C.Ds to Regulate Root Growth in Citrus.Plants (Basel, Switzerland) · 2025Article
- Acidic Stress Induces Cytosolic Free Calcium Oscillation, and an Appropriate Low pH Helps Maintain the Circadian Clock in Arabidopsis.Plants (Basel, Switzerland) · 2024Article
- The Small Auxin-Up RNA 50 (SAUR50) Gene fromPlants (Basel, Switzerland) · 2024Article
- Promising New Methods Based on the SOD Enzyme and SAUR36 Gene to Screen for Canola Materials with Heavy Metal Resistance.Biology · 2024Article
- The genetic orchestra of salicylic acid in plant resilience to climate change induced abiotic stress: critical review.Stress biology · 2024Review
- Genome-Wide Analysis of the SAUR Gene Family and Its Expression Profiles in Response to Salt Stress inPlants (Basel, Switzerland) · 2024Article
- Alfalfa Responses to Intensive Soil Compaction: Effects on Plant and Root Growth, Phytohormones and Internal Gene Expression.Plants (Basel, Switzerland) · 2024Article
- STOP1-regulatedPlant direct · 2024Article
- The Small Auxin-Up RNAPlants (Basel, Switzerland) · 2023Article
- Pan-genome analysis of 13 Malus accessions reveals structural and sequence variations associated with fruit traits.Nature communications · 2023Article
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Authors and funding
10 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsMost primary auxin response genes are classified into three families: AUX/IAA, GH3 and SAUR genes. Few studies have been conducted on Arabidopsis thaliana SAUR genes, possibly due to genetic redundancy among different subfamily members. Data mining on arabidopsis transcriptional profiles indicates that the SAUR41 subfamily members of SMALL AUXIN UP RNA genes are, strikingly, induced by an inhibitory phytohormone, abscisic acid (ABA). We aimed to reveal the physiological roles of arabidopsis SAUR41 subfamily genes containing SAUR40, SAUR41, SAUR71 and SAUR72.
methodsTranscriptional responses of arabidopsis SAUR41 genes to phytohormones were determined by quantitative real-time PCR. Knock out of SAUR41 genes was carried out with the CRISPR/Cas9 (clustered regulatory interspaced short palindromic repeats/CRISPR-associated protein 9) genome editing technique. The saur41/40/71/72 quadruple mutants, SAUR41 overexpression lines and the wild type were subjected to ultrastructural observation, transcriptome analysis and physiological characterization. KEY
resultsTranscription of arabidopsis SAUR41 subfamily genes is activated by ABA but not by gibberellic acids and brassinosteroids. Quadruple mutations in saur41/40/71/72 led to reduced cell expansion/elongation in cotyledons and hypocotyls, opposite to the overexpression of SAUR41; however, an irregular arrangement of cell size and shape was observed in both cases. The quadruple mutants had increased transcription of calcium homeostasis/signalling genes in seedling shoots, and the SAUR41 overexpression lines had decreased transcription of iron homeostasis genes in roots and increased ABA biosynthesis in shoots. Notably, both the quadruple mutants and the SAUR41 overexpression lines were hypersensitive to salt stress during seedling establishment, whereas specific expression of SAUR41 under the ABA-responsive RD29A (Responsive to Desiccation 29A) promoter in the quadruple mutants rescued the inhibitory effect of salt stress.
conclusionsThe SAUR41 subfamily genes of arabidopsis are ABA inducible to modulate cell expansion, ion homeostasis and salt tolerance. Our work may provide new candidate genes for improvement of plant abiotic stress tolerance.
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