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Results for “Limonium bicolor”

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4 recordsLinked to original sources

PubMed2006

[Studies on the chemical constituents of hypogeal part from Limonium bicolor].

OBJECTIVE: To study chemical constituents of hypogeal part from Limonium bicolor. METHODS: Column chromatography and spectral analysis were usded to isolate and identify the constituents, respectively. RESULTS: Four compounds were isolated and identified as beta-sitosterol (1), gallic acid (2), luteolin (3), quercetin (4). Some white grease was obtained, and nine constituents were identified by GC-MS elementarily. They were 2,4-dimethyl-heptene (5), ethylbenzene (6), O-xylene (7), styrene (8), hexadecanoic acid etylester (9), 9,12-octodecadienoic acid etylester (10), diisooctyl phthalate (11), alpha-amyrin (12), beta-amyrin (13), respectively. CONCLUSION: Compound 1 is isolated from Limonium bicolor and compounds 5-13 are extracted from Limonium Mill for the first time.

Benzene Derivatives↗

PubMed1998

[Effect of Limonium bicolor on bombyxmori life-span].

The effect of limonium bicolor decoction (LBD) (1%, 5%, 10%) on the life-span of bombyxmori was investigated. It was found that LBD could obviously prolong not only average life-span and average of highest life-span of both female bombyxmori and moth, but also the daration of female silkworm stage. Furthermore, LBD clud be antianoxiasis and hunger-resistant, these results showed that BLD could promise longevity.

Aging↗

PubMed2026

Identification and analysis of HD-ZIP transcription factors that regulate salt gland development and salt tolerance in Limonium bicolor.

Soil salinity severely constrains agricultural production. Elucidating the salt-tolerance mechanisms of halophytes can provide innovative approaches for improving the salt tolerance of crop plants. In this study, we performed genome-wide identification and analysis of 36 LbHDZ genes encoding homeodomain-leucine zipper (HD-ZIP) transcription factors in Limonium bicolor, a typical recretohalophyte that excretes excess salt ions through specialized salt glands. Expression profiling across different stages of salt gland development, as well as in various tissues under salt stress, indicated that multiple LbHDZ genes are involved in regulating salt gland development and salt tolerance. Among these genes, LbHDZ14 (a member of the HD-ZIP II subfamily) exhibited sustained high expression during the critical period of salt gland formation, while its transcript levels were significantly downregulated in leaves and roots under salt stress. Subsequent experiments demonstrated that LbHDZ14 is localized in the nucleus and negatively regulates salt gland density and salt tolerance by directly binding to the promoter of LbGDSL, a positive regulator of salt gland development. In conclusion, this study reveals the expression patterns of LbHDZ genes in L. bicolor, characterizes the functional mechanism of LbHDZ14, further elucidates the regulatory network underlying salt gland development, and provides candidate genes for enhancing crop salt tolerance.

Plumbaginaceae↗

PubMed2026

Transcription factor LbUBC positively regulates salt gland development and salt tolerance by directly binding to the LbTTG1 promoter and repressing its transcription.

KEY MESSAGE：: LbUBC enhances salt tolerance by promoting salt gland development via repressing LbTTG1, revealing a synergisticregulatory mechanism in Limonium bicolor. In the context of increasingly severe soil salinization, salt-tolerant genetic resources from halophytes show great application potential. In particular, the recretohalophyte Limonium bicolor, which possesses specialized salt gland structures, has become a key model for deciphering the molecular mechanisms underlying salt tolerance and salt gland development. In this study, using LbTTG1-overexpressing and -silenced lines, we demonstrate that LbTTG1 negatively regulates salt-gland development and salt tolerance. Through yeast one-hybrid, EMSA, and dual-luciferase assays, Lb7G33228 (LbUBC) was screened and verified as an upstream transcriptional regulator of LbTTG1. LbUBC enhances salt tolerance in L. bicolor by positively regulating salt-gland development, verified using LbUBC silence and overexpression strains. Interestingly, LbUBC represses the expression of its downstream target LbTTG1, thereby releasing the inhibitory effect of LbTTG1 on salt-gland development. In this manner, LbUBC positively regulates salt-gland development, achieving a dynamic balance in the regulation of salt-gland development and salt tolerance in L. bicolor. This study reveals a synergistic regulatory mechanism involving multiple genes, offering new insights for comprehensively dissecting the molecular regulatory network of salt-gland development.

Salt Tolerance↗