{"id":1030,"date":"2024-12-04T07:48:06","date_gmt":"2024-12-04T14:48:06","guid":{"rendered":"https:\/\/richardson-lab.nau.edu\/?p=1030"},"modified":"2024-12-04T08:04:52","modified_gmt":"2024-12-04T15:04:52","slug":"new-nsc-papers-out-in-pnas-and-new-phytologist","status":"publish","type":"post","link":"https:\/\/richardson-lab.nau.edu\/?p=1030","title":{"rendered":"New NSC papers out in PNAS and New Phytologist"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Way back in 2022, Raquel Alfaro-S\u00e1nchez (a postdoc at Wilfrid Laurier University in Waterloo, Canada) visited the lab to learn about nonstructural carbohydrate (NSC) analyses. During her visit, she analyzed samples from black spruce trees collected from 15 sites in low subarctic and high-mid boreal forests in the Northwest Territories, Canada. The sites varied in the depth and stability of permafrost. Results from Raquel&#8217;s work have been published in the paper, &#8220;<a href=\"https:\/\/www.pnas.org\/doi\/abs\/10.1073\/pnas.2411721121\">Permafrost instability negates the positive impact of warming temperatures on boreal radial growth<\/a>&#8220;, out this week in <em>PNAS<\/em>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Also this week, former postdoc Drew Peltier&#8217;s paper, &#8220;<a href=\"https:\/\/nph.onlinelibrary.wiley.com\/doi\/full\/10.1111\/nph.20310\">Decades-old carbon reserves are widespread among tree species, constrained only by sapwood longevity<\/a>&#8220;, has been published in <em>New Phytologist<\/em>. Drew&#8217;s paper synthesizes data on the radiocarbon (<sup>14<\/sup>C) content of NSCs  in nine different tree species, including evergreen conifers, and both ring- and diffuse-porous angiosperms. The <sup>14<\/sup>C data enable estimation of the age of NSC reserves, and were used with a new model describing the distribution of NSC reserves across rings to investigate how the distribution, mixing, and turnover of reserves vary across trees and species. Drew&#8217;s paper shows that deep mixing and rapid turnover indicate most photosynthate is rapidly metabolized. Across species, maximum reserve ages appear primarily constrained by sapwood longevity, and thus old reserves are probably widespread. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"655\" src=\"https:\/\/richardson-lab.nau.edu\/wp-content\/uploads\/2024\/12\/IMG_8862-1024x655.jpeg\" alt=\"\" class=\"wp-image-1031\" srcset=\"https:\/\/richardson-lab.nau.edu\/wp-content\/uploads\/2024\/12\/IMG_8862-1024x655.jpeg 1024w, https:\/\/richardson-lab.nau.edu\/wp-content\/uploads\/2024\/12\/IMG_8862-300x192.jpeg 300w, https:\/\/richardson-lab.nau.edu\/wp-content\/uploads\/2024\/12\/IMG_8862-768x491.jpeg 768w, https:\/\/richardson-lab.nau.edu\/wp-content\/uploads\/2024\/12\/IMG_8862-1536x982.jpeg 1536w, https:\/\/richardson-lab.nau.edu\/wp-content\/uploads\/2024\/12\/IMG_8862-2048x1309.jpeg 2048w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Coast redwood (<em>Sequoia sempervirens<\/em>; SESE) was one of the nine species included in Drew&#8217;s recent paper.  This photo shows Alatna Richardson at the base of a spectacular SESE known as <em>Triclops<\/em>, in Prairie Creek Redwoods State Park, California.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Way back in 2022, Raquel Alfaro-S\u00e1nchez (a postdoc at Wilfrid Laurier University in Waterloo, Canada) visited the lab to learn about nonstructural carbohydrate (NSC) analyses. During her visit, she analyzed samples from black spruce trees collected from 15 sites in low subarctic and high-mid boreal forests in the Northwest Territories, Canada. The sites varied in &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/richardson-lab.nau.edu\/?p=1030\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;New NSC papers out in PNAS and New Phytologist&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1030","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>New NSC papers out in PNAS and New Phytologist - The Richardson Lab<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/richardson-lab.nau.edu\/?p=1030\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"New NSC papers out in PNAS and New Phytologist - The Richardson Lab\" \/>\n<meta property=\"og:description\" content=\"Way back in 2022, Raquel Alfaro-S\u00e1nchez (a postdoc at Wilfrid Laurier University in Waterloo, Canada) visited the lab to learn about nonstructural carbohydrate (NSC) analyses. During her visit, she analyzed samples from black spruce trees collected from 15 sites in low subarctic and high-mid boreal forests in the Northwest Territories, Canada. 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