ArticleJournal of experimental botany2018
An early ABA-induced stomatal closure, Na+ sequestration in leaf vein and K+ retention in mesophyll confer salt tissue tolerance in Cucurbita species.
Article in Journal of experimental botany, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.
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49 citing papers in PubMed, 139 citations in OpenAlex.
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- Comparative metabolomic and transcriptomic analysis revealing the role of salicylic acid for short-term response with arginine and myristic acid for long-term tolerance under salt stress in watermelon (Frontiers in plant science · 2026Article
- Advances in deciphering the mechanisms of salt tolerance in Maize.Plant signaling & behavior · 2025Review
- Effect of Salinity Stress on Growth, Physiology and Anatomy of Pumpkin (Tropical life sciences research · 2025Article
- Evolution and comparison of the expression of TCP genes in the benincaseae and cucurbiteae tribes.Scientific reports · 2025Article
- Phenotypic, Physiological, and Transcriptomic Analyses Reveal Different Responses to Salt Stress in Cultivated Red Lettuce and Wild Lettuce Seedlings.International journal of molecular sciences · 2025Article
- A large-scale gene co-expression network analysis reveals Glutamate Dehydrogenase 2 (GhGDH2_D03) as a hub regulator of salt and salt-alkali tolerance in cotton.Plant molecular biology · 2025Article
- Continuous watermelon cropping impairs plant growth by modifying soil biochemistry and rhizosphere microbial communities.Frontiers in microbiology · 2025Article
- Integrated Transcriptomic, Proteomic, and Metabolomic Analyses Revealed Molecular Mechanism for Salt Resistance in Soybean (International journal of molecular sciences · 2024Article
- Adaptive Strategy of the Perennial Halophyte GrassPlants (Basel, Switzerland) · 2024Article
- Molecular cloning and functional characterization in response to saline-alkali stress of thePhysiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- Trans2express - de novo transcriptome assembly pipeline optimized for gene expression analysis.Plant methods · 2024Article
- Understanding Ameliorating Effects of Boron on Adaptation to Salt Stress in Arabidopsis.Plants (Basel, Switzerland) · 2024Article
- Hydrogen sulfide-mitigated salinity stress impact in sunflower seedlings was associated with improved photosynthesis performance and osmoregulation.BMC plant biology · 2024Article
- Genome-wide identification and expression analysis of the ALDH gene family and functional analysis ofPhysiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- Pectin demethylation-mediated cell wall NaTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
- Nanopore Direct RNA Sequencing Reveals the Short-Term Salt Stress Response in Maize Roots.Plants (Basel, Switzerland) · 2024Article
- Integration of Physiological, Transcriptomic, and Metabolomic Analyses Reveal Molecular Mechanisms of Salt Stress inPlants (Basel, Switzerland) · 2024Article
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Authors and funding
10 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Tissue tolerance to salinity stress is a complex physiological trait composed of multiple 'sub-traits' such as Na+ compartmentalization, K+ retention, and osmotic tolerance. Previous studies have shown that some Cucurbita species employ tissue tolerance to combat salinity and we aimed to identify the physiological and molecular mechanisms involved. Five C. maxima (salt-tolerant) and five C. moschata (salt-sensitive) genotypes were comprehensively assessed for their salt tolerance mechanisms and the results showed that tissue-specific transport characteristics enabled the more tolerant lines to deal with the salt load. This mechanism was associated with the ability of the tolerant species to accumulate more Na+ in the leaf vein and to retain more K+ in the leaf mesophyll. In addition, C. maxima more efficiently retained K+ in the roots when exposed to transient NaCl stress and it was also able to store more Na+ in the xylem parenchyma and cortex in the leaf vein. Compared with C. moschata, C. maxima was also able to rapidly close stomata at early stages of salt stress, thus avoiding water loss; this difference was attributed to higher accumulation of ABA in the leaf. Transcriptome and qRT-PCR analyses revealed critical roles of high-affinity potassium (HKT1) and intracellular Na+/H+ (NHX4/6) transporters as components of the mechanism enabling Na+ exclusion from the leaf mesophyll and Na+ sequestration in the leaf vein. Also essential was a higher expression of NCED3s (encoding 9-cis-epoxycarotenoid dioxygenase, a key rate-limiting enzyme in ABA biosynthesis), which resulted in greater ABA accumulation in the mesophyll and earlier stomata closure in C. maxima.
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