Vascular endodermis in root nodules of Lupinus luteus L. (Fabaceae)
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| Vascular endodermis in root nodules of Lupinus luteus L. (Fabaceae)*
Barbara Łotocka Department of Botany, Warsaw Agricultural University, ul. Nowoursynowska 159, 02-776 Warsaw, Poland **e-mail: lotocka@acn.waw.pl *FOOTNOTE: This work was part of the author’s unpublished doctoral dissertation. Received November 20, 2006; revision accepted October 20, 2007 The development of endodermis ensheathing the vascular system of root nodules was examined in Lupinus luteus L. Within the system, the vascular endodermis was found to attain different developmental stages. Close to the nodule meristems, nodule vascular bundles were surrounded with endodermis with a Casparian band (first developmental stage). In the oldest part of the nodule vascular system, that is, the nodule vascular trace together with its first range ramifications, vascular endodermis in the third developmental stage (not reported previously for the root nodule vascular system) was observed, with a secondary cell wall. Key words: Lupinus luteus L., yellow lupine, Casparian band, endodermis, root nodule. |