<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Aptos;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:12.0pt;
font-family:"Aptos",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#467886;
text-decoration:underline;}
p.s3, li.s3, div.s3
{mso-style-name:s3;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Aptos",sans-serif;}
span.bumpedfont15
{mso-style-name:bumpedfont15;}
span.EmailStyle26
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;
mso-ligatures:none;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="#467886" vlink="#96607D" style="word-wrap:break-word">
<div class="WordSection1">
<div>
<p class="MsoNormal"><b><span style="font-size:18.0pt;font-family:"Times New Roman",serif;color:black;background:white">Special Seminar tomorrow at 2pm in the Genomics Auditorium: </span></b><b><span style="font-size:18.0pt;font-family:"Times New Roman",serif;background:white"><o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="s3" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in">
<span class="bumpedfont15"><b><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:#060607">RNase-based Self-Incompatibility in Angiosperms: Degradation, Phase Separation, and Evolution</span></b></span><span style="font-size:13.5pt"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:13.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="s3" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in">
<b><span style="font-size:13.5pt;font-family:"Times New Roman",serif"><img width="1170" height="1123" style="width:12.1875in;height:11.6979in" id="Picture_x0020_1" src="cid:B65932B5-67FE-49F9-8CE3-83643918CAE9"></span></b><span style="font-size:13.5pt"><o:p></o:p></span></p>
<p class="s3" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in">
<span class="bumpedfont15"><b><span style="font-size:13.5pt;font-family:"Times New Roman",serif">Dr. Yongbiao Xue</span></b></span><span class="bumpedfont15"><span style="font-size:13.5pt;font-family:"Times New Roman",serif"> is a Professor of Plant Molecular
Genetics and a Group Leader at the Institute of Genetics and Developmental Biology, Chinese Academy of Sciences. He earned his Ph.D. in Plant Molecular Biology from University of East Anglia and the John Innes Center and subsequently completed postdoctoral
research at both the University of Oxford and the John Innes Center. His lab adopts an interdisciplinary approach to explore the molecular and evolutionary mechanisms underlying self-incompatibility in angiosperms.</span></span><span style="font-size:13.5pt"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="s3" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in">
<span class="bumpedfont15"><b><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:#060607">S-RNase-based Self-Incompatibility in Angiosperms: Degradation, Phase Separation, and Evolution</span></b></span><span style="font-size:13.5pt"><o:p></o:p></span></p>
<p class="s3" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in">
<span class="bumpedfont15"><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:#060607">Yongbiao Xue</span></span><span style="font-size:13.5pt"><o:p></o:p></span></p>
<p class="s3" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in">
<span class="bumpedfont15"><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:#060607">Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China</span></span><a name="_GoBack"></a><span style="font-size:13.5pt"><o:p></o:p></span></p>
<p class="s3" style="mso-margin-top-alt:0in;margin-right:0in;margin-bottom:7.5pt;margin-left:0in">
<span class="bumpedfont15"><span style="font-size:13.5pt;font-family:"Times New Roman",serif;color:black;background:white">Angiosperms, with over 300,000 identified species, are the most diverse group of plants. A key characteristic of approximately half of
these species is self-incompatibility, an intraspecific reproductive barrier that prevents hermaphroditic plants from producing seeds through self-pollination. This trait is governed by a multi-allelic genetic locus known as the <i>S</i>-locus, which encodes
both female (pistil) and male (pollen) S factors responsible for self-incompatibility. Recent studies have revealed the role of the pistil S factor, S-RNase, in families such as Solanaceae, Plantaginaceae, Rosaceae, and Rutaceae. S-RNase interacts with pollen
S factors, SLFs (S-locus F-box proteins), to control cross-pollen compatibility and self-pollen incompatibility. This control occurs through two distinct mechanisms: the ubiquitin 26S proteasome degradation pathway and liquid-liquid phase separation of S-RNases.
Phylogenetic analyses have shown that S-RNase-based self-incompatibility is the most ancient form of this phenomenon, tracing back to the early evolutionary stages of angiosperms during the Cretaceous period. These insights enhance our understanding of the
molecular mechanisms underlying self and non-self recognition in angiosperms and their evolutionary trajectory.</span></span><span style="font-size:13.5pt"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">Hailing Jin, Ph.D.<br>
Professor & Cy Mouradick Endowed Chair<br>
Department of Microbiology & Plant Pathology<br>
Center for Plant Cell Biology<br>
Institute for Integrative Genome Biology<br>
University of California<br>
Riverside, CA 92521<br>
Phone: 951-827-7995<br>
<a href="https://sites.google.com/a/ucr.edu/dr-hailing-jin-s-laboratory/homepage">https://sites.google.com/a/ucr.edu/dr-hailing-jin-s-laboratory/homepage</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
</body>
</html>