Jasmonic acid affects epidermal cell fate determination via influencing cell cycle related gene expression in mangrove Avicennia marina.

Avicennia marina, a pioneer mangrove species, has adapted to the intertidal habitat along the tropical and subtropical coasts by developing salt glands on its leaf epidermis. Jasmonic acid (JA) is known to regulate the development of various plant epidermis. However, its role in the development of salt glands in A. marina remains unclear. In this study, we treated A. marina seedling using exogenous methyl jasmonate (MeJA) to investigate the effect of JA on the development and cell fate determination of salt glands, stomata and trichomes in A. marina leaf. The results showed MeJA significantly increased both the density of salt glands and the Na⁺ secretion. Besides, MeJA treatment positively regulated the trichome initiation and negatively affected stomatal lineage ground cells, with a significant decrease in stomatal density but no significant change in trichome density, while it exhibited that salt gland cells may partially originate from trichomes or stomatal lineage cells. Moreover, qRT-PCR results indicated that MeJA affects salt gland development via influencing the process of cell cycle, like reducing endoreduplication. These findings clarify how salt glands contribute to A. marina adaptation to coastal intertidal habitat from a tissue development perspective.

• Publication year

  2026

• Venue

  Plant Science

• Publication date

  2026-02-03

• Fields of study

  Biology, Medicine, Environmental Science

• Identifiers
  DOI 10.1016/j.plantsci.2026.113019PMID 41644061
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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