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<p class="MsoNormal"><span style="font-size:11.0pt">Dear all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Please join us in Marley 230 on Tuesday, Nov. 26 at 4:00 PM for a seminar presented by Emma Jong from the School of Plant Sciences, University of Arizona.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><a href="https://arizona.zoom.us/j/83044711714?pwd=IQ994mWIPwbsRKMnfF9sERx5sNtv4m.1">Zoom link</a>: https://arizona.zoom.us/j/83044711714 (password: SPLS24).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Refreshments will be provided in the Marley Lobby at 3:30 PM.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt">Title: </span></b><span style="font-size:11.0pt">Generation of heat-tolerant pollen tubes in
<i>Arabidopsis thaliana</i><b><o:p></o:p></b></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt"><img border="0" width="140" height="194" style="width:1.4583in;height:2.0208in" id="Picture_x0020_2" src="cid:image001.png@01DB3C01.E3DE6B80" alt="A close-up of x-ray images
Description automatically generated"></span></b><b><span style="font-size:11.0pt"><o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt">Abstract: </span></b><span style="font-size:11.0pt">Increasing global temperatures negatively affects crop yield by inhibiting the production of seeds and/or fruits. Creating and growing crop plants that
can overcome heat stress and set seed and fruit at higher temperatures is advantageous to growers. A key aspect of fruit and seed yield is delivery of sperm cells to the ovules by the pollen tube (PT), a process that is highly susceptible to heat stress (HS).
Tomato is an economically important crop and a genetic model with genome-sequenced thermosensitive and thermotolerant varieties. Our lab found that in tomato PTs, steady-state levels of callose deposition in cell walls are higher in thermotolerant varieties
and remained higher upon HS. Here we show that overexpressing a tomato signaling protein, which positively controls callose levels, in
<i>Arabidopsis thaliana</i> PTs rendered them thermotolerant. Future research will aim to uncover the role of this signaling pathway and callose deposition in PT cell walls under HS conditions.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Courier New";mso-ligatures:none">===============================================================<br>
</span><b><span style="font-size:20.0pt;font-family:"Vladimir Script";mso-ligatures:none">Zhongguo Xiong</span></b><span style="font-size:10.0pt;font-family:"Courier New";mso-ligatures:none"> <br>
School of Plant Sciences BIO5 Institute<br>
BIO5 Email: <span style="color:blue"><a href="mailto:zxiong@arizona.edu"><span style="color:blue">zxiong@arizona.edu</span></a></span>
<br>
Phone: (520)-621-9869<br>
Forbes 303, P.O. box 210036 Fax: (520)-621-7186<br>
University of Arizona <br>
Tucson, AZ 85721-0036 <span style="color:blue"><a href="http://ag.arizona.edu/~zxiong"><span style="color:blue">http://ag.arizona.edu/~zxiong</span></a></span><br>
===============================================================</span><span style="font-size:11.0pt;mso-ligatures:none"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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