{"id":675975,"date":"2025-06-19T00:27:44","date_gmt":"2025-06-18T21:27:44","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/the-seemingly-impossible-reproduction-of-dogroses-hinges-on-a-centromere-trick\/"},"modified":"2025-06-19T00:27:44","modified_gmt":"2025-06-18T21:27:44","slug":"the-seemingly-impossible-reproduction-of-dogroses-hinges-on-a-centromere-trick","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/the-seemingly-impossible-reproduction-of-dogroses-hinges-on-a-centromere-trick\/","title":{"rendered":"The seemingly impossible reproduction of dogroses hinges on a centromere trick"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a3bf2b3e098b\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a3bf2b3e098b\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/the-seemingly-impossible-reproduction-of-dogroses-hinges-on-a-centromere-trick\/#The_dogroses_secret\" >The dogrose&#8217;s secret<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/buradabiliyorum.com\/en\/the-seemingly-impossible-reproduction-of-dogroses-hinges-on-a-centromere-trick\/#The_power_of_centromeres\" >The power of centromeres<\/a><\/li><\/ul><\/nav><\/div>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2025\/the-seemingly-impossib-1.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/the-seemingly-impossib-1.jpg\" data-sub-html=\"Pentaploid Rosa canina\u2019s flower reveals its unique sexual reproduction: asymmetric meiosis maintains pentaploidy - a rare strategy among eukaryotes. Credit: Andr\u00e9 Marques\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2025\/the-seemingly-impossib-1.jpg\" alt=\"The seemingly impossible reproduction of dogroses hinges on a centromere trick\" title=\"Pentaploid Rosa canina\u2019s flower reveals its unique sexual reproduction: asymmetric meiosis maintains pentaploidy - a rare strategy among eukaryotes. Credit: Andr\u00e9 Marques\" width=\"800\" height=\"530\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                Pentaploid Rosa canina\u2019s flower reveals its unique sexual reproduction: asymmetric meiosis maintains pentaploidy &#8211; a rare strategy among eukaryotes. Credit: Andr\u00e9 Marques<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>An international research team has achieved a significant breakthrough in research into the reproduction of dogrose. The study, which has now been <a rel=\"nofollow\" target=\"_blank\" href=\"https:\/\/www.nature.com\/articles\/s41586-025-09171-z\" target=\"_blank\">published<\/a> in <i>Nature<\/i>, shows how differences in the size of the centromeres\u2014the central docking sites for chromosomes\u2014play a decisive role in the extraordinary chromosome inheritance of these plants.<\/p>\n<p>In the long term, the results could open up new avenues for the development of more robust crops. The research was led by Dr. Andr\u00e9 Marques from the Max Planck Institute for Plant Breeding Research in Cologne, Prof. Dr. Christiane Ritz from the Senckenberg Museum of Natural History in G\u00f6rlitz and Dr. Ale\u0161 Kova\u0159\u00edk from the Institute of Biophysics of the Czech Academy of <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"Science\" target=\"_blank\" rel=\"noopener\">Science<\/a>s.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_dogroses_secret\"><\/span>The dogrose&#8217;s secret<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The dogrose (Rosa canina) is by far the most common wild rose in Central Europe. Its fruits, known as &#8220;rose hips,&#8221; are used in a variety of ways\u2014from fruit tea blends to the production of &#8220;itching powder.&#8221;<\/p>\n<p>&#8220;The plant is not only pretty to look at and can be used for all kinds of purposes, but has also developed a special form of reproduction,&#8221; explains Prof. Dr. Christiane Ritz from the Senckenberg Museum of Natural History in G\u00f6rlitz.<\/p>\n<p>&#8220;While most plants and animals each have two sets of chromosomes, the dogrose has five. This makes their reproduction more complicated. An odd number of chromosome sets even often leads to infertility in many plants because the chromosomes cannot be evenly paired and distributed during meiosis\u2014the formation of egg and sperm cells.&#8221;<\/p>\n<p>However, in the course of their evolution, the dogrose has developed an ingenious solution that still enables the plant to reproduce sexually. In the so-called Canina meiosis or balanced heterogamy, only two of the plant&#8217;s five chromosome sets mate regularly and are passed on via egg cells and pollen. The other three sets remain unpaired, so-called univalents, and are passed on exclusively via the egg cell\u2014without being changed.<\/p>\n<p>&#8220;In this way, the plant combines sexual and clonal reproduction,&#8221; explains Dr. Andr\u00e9 Marques from the Max Planck Institute for Plant Breeding Research in Cologne.<\/p>\n<p>&#8220;Although this reproductive system has been known for over 100 years, little was known about the mechanisms of this method. The role of the centromeres\u2014the central chromosome regions that are important for distribution during cell division\u2014was also unclear. In our study, we examined genomes of pentaploid dogroses\u2014plants with five complete chromosome sets\u2014in high resolution down to the level of individual chromosome sets and their origin.&#8221;<\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_power_of_centromeres\"><\/span>The power of centromeres<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The researchers&#8217; aim was to find out what enables dogroses to transport their unpaired chromosomes into the egg cell in a targeted manner\u2014a process that was not fully understood until now. The scientists found the answer in the structure of the centromeres, the DNA segments to which the spindle fibers attach during cell division. Spindle fibers are part of a spindle <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>aratus that moves chromosomes during mitosis and meiosis to ensure an even distribution of chromosomes between the daughter cells.<\/p>\n<p>&#8220;Our analysis of the three different pentaploid dogrose species showed that the univalent chromosomes have strikingly large centromeres with multiple repetitions of a rose-specific DNA sequence. These larger centromeres also increasingly bind the protein CENH3, which plays a key role in binding the spindle,&#8221; says Dr. Ale\u0161 Kova\u0159\u00edk from the Institute of Biophysics of the Czech Academy of Sciences.<\/p>\n<p>This means that the centromere size could be a decisive factor in ensuring that certain chromosomes are retained during asymmetric cell divisions. &#8220;By tweaking their centromere size and strength, these plants can literally bias which chromosomes get inherited,&#8221; adds Marques.<\/p>\n<p>&#8220;The simultaneous coexistence of sexual and clonal reproduction in the same genome\u2014controlled by differences in the centromere structure\u2014is a fascinating biological mechanism. However, the discovery not only provides new insights into the fascinating world of plant genetics, but also has practical significance for breeding,&#8221; says Ritz.<\/p>\n<p>Many cultivated plants have more than two sets of chromosomes. This makes their reproduction susceptible to errors, but can also bring advantages such as greater resistance. A better understanding of dogrose reproduction could help to make targeted use of these advantages and stabilize the fertility of polyploid plant species. Marques concludes, &#8220;In the long term, our findings could open up new avenues for the development of more robust crops.&#8221;<\/p>\n<div class=\"article-main__more p-4\">\n<p><strong>More information:<\/strong><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tV. Herklotz et al, Bimodal centromeres in pentaploid dogroses shed light on their unique meiosis, <i>Nature<\/i> (2025). <a rel=\"nofollow\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1038\/s41586-025-09171-z\" target=\"_blank\">DOI: 10.1038\/s41586-025-09171-z<\/a><\/p>\n<\/p><\/div>\n<div class=\"d-inline-block text-medium mt-4\">\n<p>\n\t\t\t\t\t\t\t\t\t\t\t\t\tProvided by<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tMax Planck Society<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" target=\"_blank\" class=\"icon_open\" href=\"http:\/\/www.mpg.de\/english\/portal\/index.html\" target=\"_blank\" rel=\"nofollow\"><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<use href=\"https:\/\/phys.b-cdn.net\/tmpl\/v6\/img\/svg\/sprite.svg#icon_open\" x=\"0\" y=\"0\"\/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/svg><br \/>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n<\/p><\/div>\n<p>\t\t\t\t\t\t\t\t\t\t<!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>\n\t\t\t\t\t\t\t\t\t\t\t\t<strong>Citation<\/strong>:<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tThe seemingly impossible reproduction of dogroses hinges on a centromere trick (2025, June 18)<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tretrieved 18 June 2025<br \/>\n\t\t\t\t\t\t\t\t\t\t\t\tfrom https:\/\/phys.org\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2025-06-seemingly-impossible-reproduction-dogroses-hinges.html\n\t\t\t\t\t\t\t\t\t\t\t <\/p>\n<p>\n\t\t\t\t\t\t\t\t\t\t\t This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no<br \/>\n\t\t\t\t\t\t\t\t\t\t\t part may be reproduced without the written permission. The content is provided for information purposes only.\n\t\t\t\t\t\t\t\t\t\t\t <\/p>\n<\/p><\/div>\n<\/p><\/div>\n<p><script id=\"facebook-jssdk\" async=\"\" src=\"https:\/\/connect.facebook.net\/en_US\/sdk.js\"><\/script><\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">If you liked the article, do not forget to share it with your friends. Follow us on\u00a0<span style=\"color: #ff0000;\"><a style=\"color: #ff0000;\" href=\"https:\/\/news.google.com\/publications\/CAAqBwgKMN63nwsw68G3Aw\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">Google News<\/a><\/span>\u00a0too, click on the star and choose us from your favorites.<\/span><\/strong><\/p><\/blockquote>\n<blockquote>\n<p style=\"text-align: center;\"><strong>If you want to read more Like this articles, you can visit our <span style=\"color: #ff9900;\"><a style=\"color: #ff9900;\" href=\"https:\/\/en.buradabiliyorum.com\/category\/sciencee\/\" target=\"_blank\" >Science category.<\/a><\/span><\/strong><\/p>\n<\/blockquote>\n<p><span style=\"color: black;\"><a style=\"color: #ff9900;\" href=\"https:\/\/phys.org\/news\/2025-06-seemingly-impossible-reproduction-dogroses-hinges.html\" target=\"_blank\" >Source<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pentaploid Rosa canina\u2019s flower reveals its unique sexual reproduction: asymmetric meiosis maintains pentaploidy &#8211; a rare strategy among eukaryotes. Credit: Andr\u00e9 Marques An international research team has achieved a significant breakthrough in research into the reproduction of dogrose. The study, which has now been published in Nature, shows how differences in the size of the&#8230;<\/p>\n","protected":false},"author":1,"featured_media":675977,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/the-seemingly-impossib-1.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-675975","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/675975","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=675975"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/675975\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/675977"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=675975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=675975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=675975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}