Work

Age-Dependent Differences in Leaf Sulfur Assimilation and Relationship with Resistance to Air Pollutant SO2

Year: 2025

Type: article

Abstract: Two poplar varieties with different resistance to sulfur dioxide were subjected to different concentrations of SO2 fumigation treatment. Young and mature leaves of Purui poplar (resistant) vs. 74/76 poplar (susceptible) were used to measure the changes in the activity of enzymes and metabolite content. Among the five key enzymes involved in sulfur metabolism and sulfur metabolites, APR, SO enzyme, GSH, and sulfate content have the greatest impact on young leaves of Purui, followed by 74/76 young leaves. The results show that for both Purui and 74/76 poplar, young leaves have stronger sulfur metabolism ability than mature leaves, indicating that young leaves have stronger SO2 resistance. Purui has stronger sulfur metabolism ability than 74/76 poplar, especially reflected in their young leaves. The comparison between young and mature leaves, as well as the comparison between resistant and susceptible varieties, mutually confirms that sulfur metabolism in leaves is an important mechanism for sulfur dioxide resistance.

Source: Forests

DOI: 10.3390/f16101582

Authors: Jinxia Feng, Luyi Wang, Wenxin Liu, Ying Gao, Xianchong Wan

Institutions: Chinese Academy of Forestry, Jiujiang University

Language: English

Topic: Nitrogen and Sulfur Effects on Brassica

Subfield: Molecular Biology

Field: Biochemistry, Genetics and Molecular Biology

Domain: Life Sciences

Open Access status: gold

Estimated APC paid: $3,137

Funder: Chinese Academy of Forestry