Glycine Betaine Enhances Poplar Cultivar (Populus deltoides × Populus euramericana) Tolerance to Confront NaCl Stress

Chen, Feiyan; Movahedi, Ali; Wei, Hui; Zhuge, Qiang; Sun, Weibo

doi:10.3390/f15081295

Open AccessArticle

Glycine Betaine Enhances Poplar Cultivar (Populus deltoides × Populus euramericana) Tolerance to Confront NaCl Stress

by

Feiyan Chen

¹,

Ali Movahedi

¹

,

Hui Wei

²,

Qiang Zhuge

¹

and

Weibo Sun

^1,*

¹

College of Life Sciences, Nanjing Forestry University, Nanjing 210037, China

²

Key Laboratory of Landscape Plant Genetics and Breeding, School of Life Sciences, Nantong University, Nantong 226001, China

^*

Author to whom correspondence should be addressed.

Forests 2024, 15(8), 1295; https://doi.org/10.3390/f15081295

Submission received: 28 June 2024 / Revised: 21 July 2024 / Accepted: 23 July 2024 / Published: 25 July 2024

(This article belongs to the Special Issue Adaptive Mechanisms of Tree Seedlings to Adapt to Stress—Second Edition)

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Abstract

Glycine betaine (GB) serves as a compatible solute crucial for stress tolerance across numerous plant species. Populus trichocarpa grows along coastal regions and often suffers from salt stress. In this study, we explored the effects of foliar spraying of GB on the growth, physicochemical indexes, gene expression, and stress tolerance of poplar under salt stress. To achieve this, poplar plants (Populus deltoides × Populus euramericana “Nanlin 895”) were grown under four NaCl concentrations: 0, 50, 100, and 150 mM. Additionally, they were treated with 0, 5, 15, and 25 mM GB. The degree of effect on potted poplars was observed after 8 weeks. A GB treatment of about 15 mM significantly reduced the impact of salt stress and photosynthetic pigments and caused an improvement in the activity of the antioxidant enzymes peroxidase (POD) and superoxide dismutase (SOD). Moreover, GB-treated poplars had significantly more malonaldehyde (MDA) than the control lines. This study indicated that GB treatment reduces salt stress symptoms in poplars. This research helps to develop safe levels of endogenous GB, which will make poplars more resistant to environmental stresses.

Keywords: Glycine Betaine; salt stress; resistant poplar

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MDPI and ACS Style

Chen, F.; Movahedi, A.; Wei, H.; Zhuge, Q.; Sun, W. Glycine Betaine Enhances Poplar Cultivar (Populus deltoides × Populus euramericana) Tolerance to Confront NaCl Stress. Forests 2024, 15, 1295. https://doi.org/10.3390/f15081295

AMA Style

Chen F, Movahedi A, Wei H, Zhuge Q, Sun W. Glycine Betaine Enhances Poplar Cultivar (Populus deltoides × Populus euramericana) Tolerance to Confront NaCl Stress. Forests. 2024; 15(8):1295. https://doi.org/10.3390/f15081295

Chicago/Turabian Style

Chen, Feiyan, Ali Movahedi, Hui Wei, Qiang Zhuge, and Weibo Sun. 2024. "Glycine Betaine Enhances Poplar Cultivar (Populus deltoides × Populus euramericana) Tolerance to Confront NaCl Stress" Forests 15, no. 8: 1295. https://doi.org/10.3390/f15081295

APA Style

Chen, F., Movahedi, A., Wei, H., Zhuge, Q., & Sun, W. (2024). Glycine Betaine Enhances Poplar Cultivar (Populus deltoides × Populus euramericana) Tolerance to Confront NaCl Stress. Forests, 15(8), 1295. https://doi.org/10.3390/f15081295

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Glycine Betaine Enhances Poplar Cultivar (Populus deltoides × Populus euramericana) Tolerance to Confront NaCl Stress

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