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Exogenous application of pipecolic acid induces stomatal closure in Arabidopsis thaliana L.

Cilt: 61 Sayı: 2 1 Temmuz 2024
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Exogenous application of pipecolic acid induces stomatal closure in Arabidopsis thaliana L.

Abstract

Objective: The major objectives of this study were (i) to determine whether exogenous Pipecolic acid treatment triggers the stomatal closure; (ii) to assess how the stomatal response is influenced by the method and concentrations of Pipecolic acid treatment; (iii) to investigate the response of Pipecolic acid-primed plants to the foliar bacterial pathogen Pseudomonas syringae pv. tomato DC3000 that invades plants through stomata. Material and Methods: Freshly harvested Arabidopsis leaves were immersed in MES-KCl buffer supplemented with 1 mM of D,L-Pipecolic acid for 2 h. Stomatal aperture was measured in epidermal strips collected from the abaxial side of the leaves. Stomatal aperture in Pipecolic acid-treated plants was also directly quantified after Pseudomonas syringae pv. tomato DC3000 inoculation. Results: The treatment with D,L-Pipecolic acid resulted in increased stomatal closure in a concentration-dependent manner. Treatments with 0.1 mM and 1 mM of D,L-Pipecolic acid led to a reduction in stomatal aperture by 32.5% and 54.7%, respectively. Leaves treated with either 1 mM of D,L-Pipecolic acid or L-Pipecolic acid demonstrated similar stomatal apertures corresponding to 2.67 and 2.49 μm, respectively. The stomatal apertures did not exhibit a significant difference between the treatments following the Pseudomonas syringae pv. tomato DC3000 infection. Pipecolic acid-mediated enhanced defense is independent of stomatal immunity. Conclusion: Exogenous Pipecolic acid triggers preinvasion stomatal closure in Arabidopsis. There is no difference between pipecolic acid application methods (soil drenching or foliar spray) in terms of affecting stoma closure.

Keywords

L-Pip , plant defense responses , Pseudomonas syringae pv. tomato DC3000 , systemic acquired resistance , stomatal defense

Kaynakça

  1. Acharya, B.R. & S.M. Assmann, 2009. Hormone interactions in stomatal function. Plant Molecular Biology, 69 (4): 451-462.
  2. Bernsdorff, F., A.C. Döring, K. Gruner, S. Schuck, A. Bräutigam & J. Zeier, 2016. Pipecolic acid orchestrates plant systemic acquired resistance and defense priming via salicylic acid-dependent and -independent pathways. The Plant Cell, 28 (1): 102-129.
  3. Chen, Y.C., E.C Holmes, J. Rajniak, J.G. Kim, S. Tang, C.R. Fischer, M.B. Muggett & E.S. Sattely, 2018. N-hydroxy-pipecolic acid is a mobile metabolite that induces systemic disease resistance in Arabidopsis. Proceedings of the National Academy of Sciences, 115 (21): E4920-E4929.
  4. Gudesblat, G.E., P.S. Torres & A.A. Vojnov, 2009. Xanthomonas campestris overcomes arabidopsis stomatal innate immunity through a DSF cell-to-cell signal-regulated virulence factor. Plant Physiology, 149 (2): 1017-1027.
  5. Hao, F., S. Zhao, H. Dong, H. Zhang, L. Sun & C. Miao, 2010. Nia1 and Nia2 are involved in exogenous salicylic acid-induced nitric oxide generation and stomatal closure in Arabidopsis. Journal of Integrative Plant Biology, 52 (3): 298-307.
  6. Hao, J.H., X.L. Wang, C.J. Dong, Z.G. Zhang & Q.M. Shang, 2011. Salicylic acid induces stomatal closure by modulating endogenous hormone levels in cucumber cotyledons. Russian Journal of Plant Physiology, 58 (5): 906-913.
  7. Hartmann, M., D. Kim, F. Bernsdorff, Z. Ajami-Rashidi, N. Scholten, S. Schreiber, T. Zeier, S. Schuck, V. Reichal-Deland & J. Zeier, 2017. Biochemical principles and functional aspects of pipecolic acid biosynthesis in plant immunity. Plant Physiology, 174 (1): 124-153.
  8. Hartmann, M. & J. Zeier, 2019. N-hydroxypipecolic acid and salicylic acid: a metabolic duo for systemic acquired resistance. Current Opinion in Plant Biology, 50: 44-57.
  9. Hsu, P.K., G. Dubeaux, Y. Takahashi & J.I. Schroeder, 2021. Signaling mechanisms in abscisic acid-mediated stomatal closure. The Plant Journal, 105 (2): 307-321.
  10. Jia, W. & J. Zhang, 2008. Stomatal movements and long-distance signaling in plants. Plant Signaling & Behavior, 3 (10): 772-777.