ISSN 2326-7275
International Journal of Anatomy and Physiology | Vol. 15, No. 11, November 2026 | pp. 1–7
DOI: 10.46882/2026/IJAP/001030
Full Length Research Paper
Title: Upregulation of the Arabidopsis thaliana Thylakoid Lumen 18.3 Protein Gene During Dehydration
Names of Authors: Mohammad Israil Ansari¹,², Tsan-Piao Lin¹*
Authors’ Affiliations:
¹ Institute of Plant Biology, National Taiwan University, Taipei, Taiwan.
² Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow Campus, Gomti Nagar, Lucknow-226 010, India.
Abstract:
Selaginella tamariscina is a resurrection plant and we have cloned several genes for dehydration in S. tamariscina through differential display. One of the genes (DQ471954) has 68% homology with the Arabidopsis thaliana thylakoid lumen 18.3 kDa protein (TLP18.3) gene. This gene has a domain of unknown function (DUF477) which is a family of uncharacterized proteins. The expression pattern of the A. thaliana TLP18.3 reveals that mRNA expression and protein accumulation are up-regulated during dehydration. The protein coding region of the A. thaliana TLP18.3 gene consists of 3 exons and 4 introns encoding 285 amino acids with a putative chloroplast transit peptide (cTP) target sequence at the N-terminal. GFP fusion protein with the N-terminal 80 amino acid residue reveals that this fusion protein is localized into the chloroplast. Our data strongly suggest that the A. thaliana TLP18.3 gene plays an important role in the dehydration process.
Keywords: Arabidopsis thaliana, dehydration, gene regulation, TLP18.3, thylakoid lumen.
Manuscript Timeline: Received: August 24, 2026; Revised: September 28, 2026; Accepted: October 15, 2026; Published: November 01, 2026.
Citation: Ansari MI, Lin TP. Upregulation of the Arabidopsis thaliana Thylakoid Lumen 18.3 Protein Gene During Dehydration. International Journal of Anatomy and Physiology. 2026; 15(11): 1–7. doi:10.46882/2026/IJAP/001030