Holm Amara, Marie-Anne Lelu-Walter, Vincent Gloaguen, Céline Faugeron-Girard
{"title":"Cell wall modifications in roots of <i>in vitro</i> grown Douglas-fir plantlets exposed to aluminum.","authors":"Holm Amara, Marie-Anne Lelu-Walter, Vincent Gloaguen, Céline Faugeron-Girard","doi":"10.1080/15226514.2025.2456099","DOIUrl":null,"url":null,"abstract":"<p><p>Aluminum (Al) is a trace element that may hamper plant growth and development. Tolerance mechanisms could imply the cell wall as it is the first barrier before entry into the plant cell. Douglas-fir plantlets were grown <i>in vitro</i> on media supplemented with different aluminum chloride (AlCl<sub>3</sub>) concentrations up to 1 mM. The characterization of the cell wall revealed quantitative and qualitative modifications in the polysaccharidic composition of the wall, in particular in roots whose pectins showed a higher galacturonic acid content with less ramification and a lower degree of methylesterification (DME) explained by a higher pectin methylesterase activity; these Al-induced changes suggest an Al-trapping process in cell wall structures. In stems and needles, the observed increase in DME rather suggests an exclusion of Al from the cell wall.</p>","PeriodicalId":14235,"journal":{"name":"International Journal of Phytoremediation","volume":" ","pages":"926-933"},"PeriodicalIF":3.1000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Phytoremediation","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1080/15226514.2025.2456099","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/7 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Aluminum (Al) is a trace element that may hamper plant growth and development. Tolerance mechanisms could imply the cell wall as it is the first barrier before entry into the plant cell. Douglas-fir plantlets were grown in vitro on media supplemented with different aluminum chloride (AlCl3) concentrations up to 1 mM. The characterization of the cell wall revealed quantitative and qualitative modifications in the polysaccharidic composition of the wall, in particular in roots whose pectins showed a higher galacturonic acid content with less ramification and a lower degree of methylesterification (DME) explained by a higher pectin methylesterase activity; these Al-induced changes suggest an Al-trapping process in cell wall structures. In stems and needles, the observed increase in DME rather suggests an exclusion of Al from the cell wall.
期刊介绍：
The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
