ArticlePlanta2021
Transcriptomic and physiological analysis reveals interplay between salicylic acid and drought stress in citrus tree floral initiation.
Article in Planta, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 39 citations in OpenAlex.
- Citrus Genotype Modulates Rhizosphere Microbiome Structure and Function Under Drought Stress.Plants (Basel, Switzerland) · 2025Article
- Effects of water deficit on fruit quality and water productivity of citrus under plastic film mulching in Western Hubei, China.Frontiers in plant science · 2025Article
- Unveiling the protective role of anthocyanin in rice: insights into drought-induced oxidative stress and metabolic regulation.Frontiers in plant science · 2024Article
- Integrating Application Methods and Concentrations of Salicylic Acid as an Avenue to Enhance Growth, Production, and Water Use Efficiency of Wheat under Full and Deficit Irrigation in Arid Countries.Plants (Basel, Switzerland) · 2023Article
- Molecular characterization of SPL gene family during flower morphogenesis and regulation in blueberry.BMC plant biology · 2023Article
- Physiology and transcriptome analysis of the response mechanism ofFrontiers in plant science · 2023Article
- Article
- Transcriptome and Physiological Analyses of a Navel Orange Mutant with Improved Drought Tolerance and Water Use Efficiency Caused by Increases of Cuticular Wax Accumulation and ROS Scavenging Capacity.International journal of molecular sciences · 2022Article
- Salicylic Acid Improves Antioxidant Defense System and Photosynthetic Performance inPlants (Basel, Switzerland) · 2022Article
- Targeted and untargeted metabolomics reveals deep analysis of drought stress responses in needles and roots ofFrontiers in plant science · 2022Article
- Exogenous melatonin ameliorates drought stress inFrontiers in plant science · 2022Article
- Is CRISPR/Cas9 a way forward to fast-track genetic improvement in commercial palms? Prospects and limits.Frontiers in plant science · 2022Review
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
MAIN
conclusionSalicylic acid (SA) and drought stress promote more flowering in sweet orange. The physiological response and molecular mechanism underlying stress-induced floral initiation were discovered by transcriptome profiling. Numerous flowering-regulated genes were identified, and ectopically expressed CsLIP2A promotes early flowering in Arabidopsis. Floral initiation is a critical developmental mechanism associated with external factors, and citrus flowering is mainly regulated by drought stress. However, little is known about the intricate regulatory network involved in stress-induced flowering in citrus. To understand the molecular mechanism of floral initiation in citrus, flower induction was performed on potted Citrus sinensis trees under the combined treatment of salicylic acid (SA) and drought (DR). Physiological analysis revealed that SA treatment significantly normalized the drastic effect of drought stress by increasing antioxidant enzyme activities (SOD, POD, and CAT), relative leaf water content, total chlorophyll, and proline contents and promoting more flowering than drought treatment. Analysis of transcriptome changes in leaves from different treatments showed that 1135, 2728 and 957 differentially expressed genes (DEGs) were revealed in response to DR, SD (SA + DR), and SA (SA + well water) treatments in comparison with the well watered plants, respectively. A total of 2415, 2318 and 1933 DEGs were expressed in DR, SD, and SA in comparison with water recovery, respectively. Some key flowering genes were more highly expressed in SA-treated drought plants than in DR-treated plants. GO enrichment revealed that SA treatment enhances the regulation and growth of meristem activity under drought conditions, but no such a pathway was found to be highly enriched in the control. Furthermore, we focused on various hormones, sugars, starch metabolism, and biosynthesis-related genes. The KEGG analysis demonstrated that DEGs enriched in starch sucrose metabolism and hormonal signal transduction pathways probably account for stress-induced floral initiation in citrus. In addition, a citrus LIPOYLTRANSFERSAE 2A homologous (LIP2A) gene was upregulated by SD treatment. Ectopic expression of CsLIP2A exhibited early flowering in transgenic Arabidopsis. Taken together, this study provides new insight that contributes to citrus tree floral initiation under the SA-drought scenario as well as an excellent reference for stress-induced floral initiation in woody trees.
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