cgi-bin/community/feature/200408.pl

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  30 $page->header('The Unit of Plant Biology', undef, $stylesheet);
  31 print<<END_HEREDOC;
  32
  33   <center>
  34     <h1>The Unit of Plant Biology - Louvain-la-Neuve</h1>
  35   </center>
  36
  37   <h2>Research Focus</h2>
  38
  39   <p>The research interests of the Unit of Plant Biology are
  40   focused on two main topics: i) investigating a key developmental
  41   change in plant life cycle, namely flowering (J.-M. Kinet), ii)
  42   understanding the physiological, genetic and biochemical basis of
  43   sensing and responding to environmental cues such as drought,
  44   cold, mineral toxicity and other abiotic signals by which plants
  45   interact with their surroundings (H. Batoko and S. Lutts). A
  46   comprehensive set of approaches are currently used including
  47   whole plant physiology (S. Lutts and J.M. Kinet), biochemistry
  48   (S. Lutts), histology (J.-M. Kinet), cell and molecular biology
  49   (H. Batoko). A variety of plant species are investigated
  50   (Arabidopsis thaliana, rice, xero-halophyte species belonging to
  51   the genus Atriplex, Fagopyrum esculentum, etc.), the choices
  52   being driven mostly by conceptual or specific hypotheses-based
  53   suitability.</p>
  54
  55   <p>Tomato is among the main model-plants used in the laboratory.
  56   The main objectives of the ongoing researchs are:</p>
  57
  58   <ol>
  59     <li><p>to study the salt tolerance mechanisms in Lycopersicon
  60     esculentum and its wild relatives (namely L. chesmanii and L.
  61     pennellii) in relation to the role of the SOS pathway in ion
  62     homeostasis (Fig. 1)</p>
  63
  64 <center>
  65         <img src="/static_content/community/feature/200408-1.png" border="0" width="435" height="275"
  66         alt="Figure 1" /><br />
  67         Figure 1. Zhu, J.-K., 2003<br />
  68         Curr.Op. Plant. Biol., 6, 441-445
  69 </center>
  70     </li>
  71
  72     <li><p>to characterize the impact of Cd in relation to oxidative
  73     stress and phytochelatine synthesis.</p></li>
  74
  75     <li><p>to characterize genes involved in flowering. Up to now, the
  76     main focus was on uf mutant which initiates single flowers
  77     instead of multi- flowered inflorescences (Fig. 2). Ongoing
  78     work has already established that UNIFLORA is a pivotal gene
  79     that regulates floral transition and the identity of the
  80     inflorescential meristem in tomato. Other mutations that are
  81     concomitantly investigated include compound inflorescence,
  82     jointless, blind, single flower truss and self pruning.</p></li>
  83   </ol>
  84
  85 <center>
  86     <img src="/static_content/community/feature/200408-2.jpg" border="0" width="450" height="660"
  87     alt="solitary, normal and fertile flowers" /> <img src=
  88     "/static_content/community/feature/200408-3.jpg" border="0" width="414" height="660" alt=
  89     "SEM views" /><br />
  90     Figure 2. The reproductive structure of the uf tomato mutant.
  91     Left: solitary, normal and fertile flowers are consistently
  92     produced instead of inflorescences. Right: SEM views of a same
  93     uf-induced floral structure showing that the single-flower
  94     phenotype results from the inability of the plant to produce an
  95     inflorescence and not from post-initiation abortion processes
  96     affecting young flower buds. The isolated flower is seen with
  97     its 6 sepals (1 to 6) and was initiated after the formation of
  98     the 12th leaf (A). An axillary bud (AB) bearing three leaves
  99     (B,C, D) has been initiated at the basis of the flower (Dielen,
 100     et al., 1998. Plant Growth Regul., <strong>25</strong>,
 101     149-157).
 102 </center>
 103
 104   <h2>Some Publications</h2>
 105
 106   <div style="margin-left: 40px">
 107     <p class="bibliography">Bajji, M., Kinet, J.M. and Lutts, S.
 108     1998. Salt stress effects on roots and leaves of Atriplex
 109     halimus L. and their corresponding callus cultures. Plant Sci.,
 110     137, 131-142.</p>
 111
 112     <p class="bibliography">Lutts, S., Majerus, V. and Kinet, J.M.
 113     1999. NaCl effects on proline metabolism in rice (Oryza sativa
 114     ) seedlings. Physiol. Plant., 105, 450- 458.</p>
 115
 116     <p class="bibliography">Batoko, H., Zheng, H.-Q., Hawes, C. and
 117     Moore, I. 2000. A Rab1 GTPase is required for transport between
 118     the endoplasmic reticulum and Golgi apparatus and for normal
 119     Golgi movement in plants. Plant Cell, 12, 2201-2217</p>
 120
 121     <p class="bibliography">Dielen, V., Lecouvet, V., Dupont, S.
 122     and Kinet, J.M. 2001. In vitro control of floral transition in
 123     tomato (Lycopersicon esculentum Mill.), the model for
 124     autonomously flowering plants, using the late flowering
 125     uniflora mutant. J. Exp. Bot., 52, 715-723.</p>
 126
 127     <p class="bibliography">Geelen, D., Leyman, B., Batoko, H., Di
 128     Sansebastiano, G.-P., Moore, I. and Blatt, M.R. 2002. The
 129     abscissic acid-related SNARE homolog NtSyr1 contributes to
 130     secretion and growth: evidence from competition with its
 131     cytosolic domain Plant Cell, 14, 387-406.</p>
 132
 133     <p class="bibliography">Martinez, J.P., Ledent, J.F., Bajji,
 134     M., Kinet, J.M. and Lutts, S. 2003. Effect of water stress on
 135     growth, Na+ and K+ accumulation and water use efficiency in
 136     relation to osmotic adjustment in two populations of Atriplex
 137     halimus L. Plant Growth Regul., 41, 63-73.</p>
 138
 139     <p class="bibliography">Dielen, V., Quinet, M., Chao, J.,
 140     Batoko, H., Havelange, A. and Kinet, J.M. 2004. UNIFLORA, a
 141     pivotal gene that regulates floral transition and meristem
 142     identity in tomato (Lycopersicon esculentum Mill.). New
 143     Phytol., 161, 393-400.</p>
 144
 145     <p class="bibliography">Quinet, M., Cawoy, V., Lef\350vre, I.,
 146     Van Miegroet, F., Jacquemart, A.L. and Kinet, J.M. 2004.
 147     Inflorescence structure and control of flowering time and
 148     duration by light in buckwheat (Fagopyrum esculentum Moench.).
 149     J. Exp. Bot., 55, 1509-1517.</p>
 150
 151     <p class="bibliography">Lutts, S., Lef\350vre, I.,
 152     Delp&eacute;r&eacute;e, C., Kivits, S., Dechamps, C., Robledo,
 153     A. and Correal, E. 2004. Heavy metal accumulation by the
 154     halophyte species Atriplex halimus, a promising species for
 155     phytoremediation purposes. J. Environm. Qual., 33, in
 156     press.</p>
 157   </div>
 158
 159   <h2>Contact</h2>
 160
 161   <p>Jean-Marie Kinet - Stanley Lutts - Henri Batoko<br />
 162   Universit&eacute; catholique de Louvain<br />
 163   Unit&eacute; de Biologie v&eacute;g&eacute;tale<br />
 164   D&eacute;partement de Biologie et Institut des Sciences de la Vie
 165   (ISV)<br />
 166   Croix du Sud, 5 (bte 13)<br />
 167   B-1348 Louvain-la-Neuve<br />
 168   Belgium<br />
 169   Fax : +32 10 47 34 35<br />
 170   <br />
 171   JMK : Tel : +32 10 47 20 50 - Email : <a href=
 172   "mailto:kinet\@bota.ucl.ac.be">kinet\@bota.ucl.ac.be</a><br />
 173   SL : Tel : +32 10 47 20 37 - Email : <a href=
 174   "mailto:lutts\@bota.ucl.ac.be">lutts\@bota.ucl.ac.be</a><br />
 175   HB : Tel : +32 10 47 92 65 - Email : <a href=
 176   "mailto:batoko\@bota.ucl.ac.be">batoko\@bota.ucl.ac.be</a><br />
 177   <br />
 178   For more information, please visit the lab's website at<br />
 179   <a href=
 180   "http://www.bota.ucl.ac.be/Acces.html">http://www.bota.ucl.ac.be/Acces.html</a><br />
 181
 182   <br />
 183   (note that an english version of the site will be launched
 184   soon).</p>
 185 END_HEREDOC
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