{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T18:07:40Z","timestamp":1788890860441,"version":"build-2803163510"},"reference-count":44,"publisher":"Oxford University Press (OUP)","license":[{"start":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T00:00:00Z","timestamp":1787702400000},"content-version":"am","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"funder":[{"DOI":"10.13039\/100000001","name":"National Science Foundation-IOS","doi-asserted-by":"crossref","award":["2318280"],"award-info":[{"award-number":["2318280"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/100000161","name":"NIST","doi-asserted-by":"publisher","award":["60NANB24D191"],"award-info":[{"award-number":["60NANB24D191"]}],"id":[{"id":"10.13039\/100000161","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Vascular plants use the phloem to transport photoassimilates via sieve elements, which are cells with modified anatomy to accommodate long-distance transport. Mature sieve elements lack the majority of cell organelles to reduce friction in the tube system, but some organelles like the endoplasmic reticulum, mitochondria, phloem proteins, and sieve element plastids remain. Most of the functions of sieve element organelles are poorly characterized. This leads to the fact that sieve element plastids are often omitted from textbooks as a plastid type, although they apparently derive from proplastids. As they are ultrastructurally diverse, sieve element plastids have been used for taxonomic purposes, but functional information is scarce. Here, we review the currently available literature on the structure and function of sieve element plastids.<\/jats:p>","DOI":"10.1093\/pcp\/pcag114","type":"journal-article","created":{"date-parts":[[2026,8,14]],"date-time":"2026-08-14T11:28:58Z","timestamp":1786706938000},"source":"Crossref","is-referenced-by-count":0,"title":["Sieve element plastids: an elusive organelle"],"prefix":"10.1093","author":[{"given":"Viktoriya V","family":"Vasina","sequence":"first","affiliation":[{"name":"School of Biological Sciences, Washington State University , 100 Library Rd, Pullman, WA 99164-4236 ,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0391-9891","authenticated-orcid":false,"given":"Michael","family":"Knoblauch","sequence":"additional","affiliation":[{"name":"School of Biological Sciences, Washington State University , 100 Library Rd, Pullman, WA 99164-4236 ,","place":["USA"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,8,26]]},"reference":[{"key":"2026090813213989800_ref1","doi-asserted-by":"publisher","first-page":"894","DOI":"10.1080\/11263504.2024.2375333","article-title":"Transition dynamics in plastid interconversion in land plants","volume":"158","author":"Altamura","year":"2024","journal-title":"Plant Biosyst."},{"key":"2026090813213989800_ref2","doi-asserted-by":"publisher","first-page":"245","DOI":"10.1080\/0028825X.1974.10428869","article-title":"Secondary phloem in Pinus radiata D. Don: 1. Structure of differentiating sieve cells","volume":"12","author":"Barnett","year":"1974","journal-title":"N. Z. J. Bot."},{"key":"2026090813213989800_ref3","doi-asserted-by":"publisher","first-page":"174","DOI":"10.1007\/BF00398395","article-title":"Die Siebr\u00f6hren-Plastiden der Monocotyledonen: Vergleichende Untersuchungen \u00fcber Feinbau und Verbreitung eines charakteristischen Plastidentyps","volume":"84","author":"Behnke","year":"1969","journal-title":"Planta."},{"key":"2026090813213989800_ref4","doi-asserted-by":"publisher","first-page":"155","DOI":"10.1007\/BF02872355","article-title":"Sieve-tube plastids in relation to angiosperm systematics\u2013an attempt towards a classification by ultrastructural analysis","volume":"38","author":"Behnke","year":"1972","journal-title":"Bot. Rev."},{"key":"2026090813213989800_ref5","doi-asserted-by":"publisher","first-page":"321","DOI":"10.1007\/BF00387060","article-title":"Plastids in sieve elements and their companion cells","volume":"110","author":"Behnke","year":"1973","journal-title":"Planta."},{"key":"2026090813213989800_ref6","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1007\/BF00983281","article-title":"Sieve-element plastids of Gymnospermae: their ultrastructure in relation to systematics","volume":"123","author":"Behnke","year":"1974","journal-title":"Plant Syst. Evol."},{"key":"2026090813213989800_ref7","doi-asserted-by":"publisher","first-page":"91","DOI":"10.1007\/BF01289333","article-title":"P-type sieve-element plastids: a correlative ultrastructural and ultrahistochemical study on the diversity and uniformity of a new reliable character in seed plant systematics","volume":"83","author":"Behnke","year":"1975","journal-title":"Protoplasma."},{"key":"2026090813213989800_ref8"},{"key":"2026090813213989800_ref9","doi-asserted-by":"publisher","first-page":"381","DOI":"10.1111\/j.1756-1051.1981.tb00706.x","article-title":"Sieve-element characters","volume":"1","author":"Behnke","year":"1981","journal-title":"Nord. J. 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Plant Sci."},{"key":"2026090813213989800_ref15","doi-asserted-by":"publisher","first-page":"722","DOI":"10.1023\/B:RUPP.0000003269.31706.ed","article-title":"Exploring the radial and longitudinal aeration of primary maize roots by means of Clark-type oxygen microelectrodes","volume":"50","author":"Darwent","year":"2003","journal-title":"Russ. J. Plant Physiol."},{"key":"2026090813213989800_ref16","doi-asserted-by":"publisher","first-page":"80","DOI":"10.1007\/BF02524265","article-title":"Ultrastructural features of well-preserved and injured sieve elements: minute clamps keep the phloem transport conduits free for mass flow","volume":"214","author":"Ehlers","year":"2000","journal-title":"Protoplasma"},{"key":"2026090813213989800_ref17","doi-asserted-by":"publisher","first-page":"772","DOI":"10.1002\/j.1537-2197.1978.tb06136.x","article-title":"Hyperplastic phloem in sugarbeet leaves infected with the beet curly top virus","volume":"65","author":"Esau","year":"1978","journal-title":"Am. J. Bot."},{"key":"2026090813213989800_ref18","doi-asserted-by":"publisher","first-page":"429","DOI":"10.1073\/pnas.54.2.429","article-title":"Fixation images of sieve element plastids in Beta","volume":"54","author":"Esau","year":"1965","journal-title":"Proc. Natl. Acad. 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Hidden corners, fierce debates, future prospects","volume":"263","author":"Van Bel","year":"2026","journal-title":"Protoplasma"},{"key":"2026090813213989800_ref39","doi-asserted-by":"publisher","first-page":"1529","DOI":"10.1104\/pp.102.017202","article-title":"Phloem metabolism and function have to cope with low internal oxygen","volume":"131","author":"Van Dongen","year":"2003","journal-title":"Plant Physiol."},{"key":"2026090813213989800_ref40","doi-asserted-by":"publisher","first-page":"743","DOI":"10.1104\/pp.109.3.743","article-title":"Identification and characterization of a phloem-specific beta-amylase","volume":"109","author":"Wang","year":"1995","journal-title":"Plant Physiol."},{"key":"2026090813213989800_ref41","doi-asserted-by":"publisher","first-page":"489","DOI":"10.1111\/j.1469-8137.1978.tb01581.x","article-title":"A suggested cycle of plastid developmental interrelationships","volume":"80","author":"Whatley","year":"1978","journal-title":"New Phytol."},{"key":"2026090813213989800_ref42","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1007\/978-1-4020-4061-0_1","volume-title":"The Structure and Function of Plastids","author":"Wise","year":"2006"},{"key":"2026090813213989800_ref43","doi-asserted-by":"publisher","first-page":"230","DOI":"10.1007\/BF00384875","article-title":"The development of the sieve elements of Pinus pinea","volume":"69","author":"Wooding","year":"1966","journal-title":"Planta"},{"key":"2026090813213989800_ref44","doi-asserted-by":"publisher","first-page":"142","DOI":"10.1104\/pp.75.1.142","article-title":"Light-induced transformation of amyloplasts into chloroplasts in potato tubers","volume":"75","author":"Zhu","year":"1984","journal-title":"Plant Physiol."}],"container-title":["Plant and Cell Physiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/academic.oup.com\/pcp\/advance-article-pdf\/doi\/10.1093\/pcp\/pcag114\/70797571\/pcag114.pdf","content-type":"application\/pdf","content-version":"am","intended-application":"syndication"},{"URL":"https:\/\/academic.oup.com\/pcp\/advance-article-pdf\/doi\/10.1093\/pcp\/pcag114\/70797571\/pcag114.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T17:21:47Z","timestamp":1788888107000},"score":1,"resource":{"primary":{"URL":"https:\/\/academic.oup.com\/pcp\/advance-article\/doi\/10.1093\/pcp\/pcag114\/8770984"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,8,26]]},"references-count":44,"URL":"https:\/\/doi.org\/10.1093\/pcp\/pcag114","relation":{},"ISSN":["0032-0781","1471-9053"],"issn-type":[{"value":"0032-0781","type":"print"},{"value":"1471-9053","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,8,26]]},"article-number":"pcag114"}}