{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T05:04:10Z","timestamp":1790053450895,"version":"4.0.1"},"reference-count":71,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T00:00:00Z","timestamp":1790035200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100005197","name":"Chinese Academy of Forestry","doi-asserted-by":"publisher","award":["CAFYBB2022QC001"],"award-info":[{"award-number":["CAFYBB2022QC001"]}],"id":[{"id":"10.13039\/501100005197","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Plant Sci."],"abstract":"<jats:p>\n                    Salt stress significantly constrains plant growth and development, with the root system serving as the primary organ for sensing and responding to salinity. Poplar (\n                    <jats:italic>Populus<\/jats:italic>\n                    spp.), a widely cultivated tree species, plays a pivotal role in urban greening, windbreak and sand fixation, and various economic sectors. Six poplars as experimental materials to analyze lignin deposition in the root system and variations in the casparian strip under salt stress. Lignin enrichment and changes in the casparian strip are as follows:\n                    <jats:italic>P. alba \u00d7 P. glandulosa<\/jats:italic>\n                    \u201884K\u2019 showed the most pronounced changes, followed by\n                    <jats:italic>P. cathayana<\/jats:italic>\n                    and\n                    <jats:italic>P. tremula \u00d7 P. alba<\/jats:italic>\n                    , then\n                    <jats:italic>P<\/jats:italic>\n                    .\n                    <jats:italic>deltoids<\/jats:italic>\n                    \u00d7\n                    <jats:italic>P<\/jats:italic>\n                    .\n                    <jats:italic>euramericana<\/jats:italic>\n                    \u2018Nanlin895\u2019,\n                    <jats:italic>Populus<\/jats:italic>\n                    \u00d7\n                    <jats:italic>euramaricana<\/jats:italic>\n                    \u2018Bofeng 3 hao\u2019 and\n                    <jats:italic>P. simonii.<\/jats:italic>\n                    Transcriptome sequencing revealed the molecular mechanisms in the 84K poplar and\n                    <jats:italic>P. simonii<\/jats:italic>\n                    with the greatest and smallest lignin increase, respectively. The results reveal that 84K poplar and\n                    <jats:italic>P. simonii<\/jats:italic>\n                    mainly regulate the accumulation of lignin through phenylalanine metabolism, starch and sucrose metabolism, as well as the MAPK signaling pathway under salt stress. This study provides critical theoretical support for elucidating the molecular response mechanisms of root lignin and the casparian strip under salt stress.\n                  <\/jats:p>","DOI":"10.3389\/fpls.2026.1888861","type":"journal-article","created":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T04:25:17Z","timestamp":1790051117000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["The lignin deposition responses of different poplar root systems to salt stress"],"prefix":"10.3389","volume":"17","author":[{"given":"Jia-Hui","family":"Meng","sequence":"first","affiliation":[{"name":"College of Horticulture, China Agricultural University","place":["Beijing, China"]},{"name":"State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry","place":["Beijing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wen-Teng","family":"Zuo","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry","place":["Beijing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Rao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry","place":["Beijing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kang-Ping","family":"Liao","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry","place":["Beijing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hong-Chao","family":"Liu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry","place":["Beijing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liu-Qiang","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of the State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry","place":["Beijing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ting-Ting","family":"Sun","sequence":"additional","affiliation":[{"name":"College of Horticulture, China Agricultural University","place":["Beijing, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,9,22]]},"reference":[{"key":"B38","doi-asserted-by":"publisher","DOI":"10.3390\/agronomy7010018","article-title":"Plant responses to salt stress: Adaptive mechanisms","volume":"7","author":"Acosta-Motos","year":"2017","journal-title":"Agronomy"},{"key":"B47","doi-asserted-by":"publisher","first-page":"9353","DOI":"10.1073\/pnas.92.20.9353","article-title":"A membrane-associated form of sucrose synthase and its potential role in synthesis of cellulose and callose in plants","volume":"92","author":"Amor","year":"1995","journal-title":"Proc. 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