MRI imaging moves from hospitals to forests to help sick trees

May 11, 2016, University of Western Sydney
Volume rendering of a plant with stem with cut away showing internal anatomy of the xylem. One advantage of tomography is that the volume can be sliced in any orientation after the scan is completed. Credit: Dr Brendan Choat

Dr Brendan Choat from the Hawkesbury Institute for the Environment is using advanced imaging techniques normally used for human patients to gain insights into the way plants deal with severe droughts, and how quickly different species recover.

Dr Choat has successfully scanned tree branches using non-invasive commonplace in hospitals, such as CT scanning and MRI imaging, to investigate how droughts impact the transportation of water in The research was conducted at the University's Biomedical Imaging facility in Campbelltown.

The study, published in the Journal of Plant Physiology, details how these advanced medical techniques allow the visualisation of plants at unprecedented resolution and time scales.

"Traditionally, researchers looking to monitor the health of trees were forced to use techniques that were indirect and prone to inaccuracies, such as removing tree branches and spinning them in centrifuges," says Dr Choat.

"This study shows that we can have much more confidence in our results by taking the technology we currently use on human patients in hospitals and applying it to plants to monitor their health. This provides a new window into how plants respond to environmental stresses"

Even greater potential for discovery is provided by powerful facilities such as the Australian Synchrotron. Dr Choat is currently working with scientists at the Australian Synchrotron's Imaging and Medical Beamline to improve our understanding of how plants survive and recover from drought.

When trees are stressed in times of reduced rainfall and increased heat, tiny air-bubbles form, preventing the plants from transporting water from the soil through their trunks. These air-bubbles, called embolisms, are now recognised internationally as one of the principal reasons plants die during droughts.

"Droughts are devastating for farmers, and can cause ecological disasters such as forest dieback events, as we saw in Tasmania in early 2013, and in the Amazon rainforest following long-term reductions in rainfall," says Dr Choat.

"By utilising advanced imaging techniques, we can now accurately determine the health of trees and plants under threat, and put in place more effective measures to protect key crops and ecologically important species."

"Looking ahead, this breakthrough will increase the information available to farmers making costly decisions regarding crop plants, as well as feed into development of crop species with better drought tolerance."

Explore further: Study documents drought's impact on redwood forest ferns

Related Stories

Study documents drought's impact on redwood forest ferns

February 1, 2016

The native ferns that form a lush green understory in coastal redwood forests are well adapted to dry summers and periodic droughts, but California's current prolonged drought has taken a toll on them. A comprehensive study ...

Trees trade carbon among each other, study reports

April 14, 2016

Forest trees use carbon not only for themselves; they also trade large quantities of it with their neighbours. Botanists from the University of Basel report this in the journal Science. The extensive carbon trade among trees ...

Helping crops survive prolonged drought, save water

March 30, 2016

Purdue researchers are developing a technology that could enable specific plants and crops to survive extreme periods of drought, while significantly decreasing agricultural water consumption.

Recommended for you

Nanoscale Lamb wave-driven motors in nonliquid environments

March 19, 2019

Light driven movement is challenging in nonliquid environments as micro-sized objects can experience strong dry adhesion to contact surfaces and resist movement. In a recent study, Jinsheng Lu and co-workers at the College ...

OSIRIS-REx reveals asteroid Bennu has big surprises

March 19, 2019

A NASA spacecraft that will return a sample of a near-Earth asteroid named Bennu to Earth in 2023 made the first-ever close-up observations of particle plumes erupting from an asteroid's surface. Bennu also revealed itself ...

The powerful meteor that no one saw (except satellites)

March 19, 2019

At precisely 11:48 am on December 18, 2018, a large space rock heading straight for Earth at a speed of 19 miles per second exploded into a vast ball of fire as it entered the atmosphere, 15.9 miles above the Bering Sea.

Revealing the rules behind virus scaffold construction

March 19, 2019

A team of researchers including Northwestern Engineering faculty has expanded the understanding of how virus shells self-assemble, an important step toward developing techniques that use viruses as vehicles to deliver targeted ...

Levitating objects with light

March 19, 2019

Researchers at Caltech have designed a way to levitate and propel objects using only light, by creating specific nanoscale patterning on the objects' surfaces.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.