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Researchers from the Viikki Biocenter discover how plants control the formation of wood cells
Date:5/31/2011

An international research group headed by Professor and Research Director Yrj Helariutta has discovered the genetic process that controls the development of wood cells in the roots of plants. Wood is the vascular tissue that transports water and nutrients upward from the root, also contributing to the formation of the woody element in the stem. The work, published in the online version of the prestigious Current Biology journal, presents a potential method for engineering plants to produce more wood.

All multicellular organisms start life as a single cell. This cell begins to divide, and the new cells need to take on new identities. Understanding the genetic messages that control these processes helps researchers to direct the development of plants. Plant cells can be engineered to produce more or less of a certain cell or tissue, for example. More durable and faster-growing plants are particularly important in this era of climate change and energy considerations. The goal is to direct the development of plants for the good of mankind.

The research carried out by Professor Helariutta's team will help to direct future crop and forestry improvements. According to researcher Anthony Bishopp, the results enhance our understanding of how plants develop.

"The formation of water-transporting tissues has been paramount to plants' colonisation of the land. We are now presenting a mechanism through which the identity of water-conducting wood cells can be assigned," says Bishopp.

The results show that the interaction between two hormones controls the extent to which wood forms in the root. In addition to altering the movement of these hormones, the researchers altered the plants' ability to perceive them. This resulted in plants with deficient or excessive wood tissue. Wood cells are rich in cellulose, which can be harnessed to produce biofuels. The forestry industry could also benefit from trees with wood properties that have
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Contact: Anthony Bishopp
anthony.bishopp@helsinki.fi
358-919-159-425
University of Helsinki
Source:Eurekalert

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