{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T10:58:16Z","timestamp":1790074696195,"version":"4.0.1"},"reference-count":41,"publisher":"National Academy of Sciences","issue":"24","license":[{"start":{"date-parts":[[2022,6,6]],"date-time":"2022-06-06T00:00:00Z","timestamp":1654473600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","award":["FOR2581 HA6316\/2"],"award-info":[{"award-number":["FOR2581 HA6316\/2"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","award":["EXC 2048\/1 Project ID: 390686111"],"award-info":[{"award-number":["EXC 2048\/1 Project ID: 390686111"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.pnas.org"],"crossmark-restriction":true},"short-container-title":["Proc. Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2022,6,14]]},"abstract":"<jats:title>Significance<\/jats:title>\n                  <jats:p>\n                    The sudden explosion of seed pods in popping cress (\n                    <jats:italic>Cardamine hirsuta<\/jats:italic>\n                    ) takes less than 3 ms to accelerate seeds away from the plant. This explosive mechanism relies on polar deposition of the cell-wall polymer lignin. To investigate the genetic basis for polar lignin deposition, we conducted a mutant screen and identified SQUAMOSA PROMOTER-BINDING PROTEIN-LIKE 7 (SPL7)\u2014a transcriptional regulator of copper homeostasis. We discovered three multicopper laccases, LAC4, 11, and 17, that precisely colocalize with, and are required for, the polar deposition of lignin in explosive seed pods. Activity of these three laccases depends on SPL7 to acclimate to copper deficiency. Our findings demonstrate how mineral nutrition is integrated with polar lignin deposition to facilitate dispersal.\n                  <\/jats:p>","DOI":"10.1073\/pnas.2202287119","type":"journal-article","created":{"date-parts":[[2022,6,6]],"date-time":"2022-06-06T15:02:27Z","timestamp":1654527747000},"update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":42,"title":["Explosive seed dispersal depends on SPL7 to ensure sufficient copper for localized lignin deposition via laccases"],"prefix":"10.1073","volume":"119","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4071-7340","authenticated-orcid":false,"given":"Miguel","family":"P\u00e9rez-Ant\u00f3n","sequence":"first","affiliation":[{"name":"Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, 50829 Cologne, 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