The finding sheds first-ever light on the molecular-level mechanisms of plant cell dedifferentiation, offering fundamental insights on wound-induced organ regeneration and promising applications in agriculture and manufacturing.
One of the most remarkable properties of plants is their capacity to regenerate tissue structures and even whole organs to replace those damaged or lost through injury. Plants are able to do this thanks to high-level dedifferentiation, a process whereby mature cells withdraw from their specialized state and acquire proliferation ability and pluripotency, enabling them to develop anew into different cell types. While the knowledge and use of techniques for plant organ regeneration has a long history in horticulture, little is known about the molecular mechanisms underlying dedifferentiation.
To clarify these mechanisms, the researchers studied a common type of cell dedifferentiation induced by wounding, where its role in tissue and organ regeneration is critical to survival. In plants, this regeneration frequently occurs through the creation of masses of cells known as callus, which grow over the wound to protect it. Using data from earlier research, the researchers identified a gene in the model plant Arabidopsis thaliana that is upregulated in callus. Further investigation revealed that the gene is rapidly expressed at the wound site and throughout the development of the callus, pointing to a potential role in wound-induced dedifferentiation.
Through a series of experiments, the researchers went on to analyze the function of this gene and the transcription factor it encodes, referred to as WOUND INDUCED DEDIFFERENTIATION 1 (WIND1). Elevated expression of the WIND1 gene in wounds, and formation of callus in response to WIND1 activation, reveal its role as a master regulator for wound-induced dedifferentiation in plants.
Together, the findings establish a mechanism for transcriptional control of cell dedifferentiation underlying wound-induced organ regeneration. While laying the groundwork for fundamental advances in plant science, the research also opens the door to applications in agricultural technology as well as in the production of useful materials.
For more information, please contact:
About the RIKEN Plant Science Center
With rapid industrialization and a world population set to top 9 billion within the next 30 years, the need to increase our food production capacity is more urgent today than it ever has been before. Avoiding a global crisis demands rapid advances in plant science research to boost crop yields and ensure a reliable supply of food, energy and plant-based materials.The RIKEN Plant Science Center (PSC), located at the RIKEN Yokohama Research Institute in Yokohama City, Japan, is at the forefront of research efforts to uncover mechanisms underlying plant metabolism, morphology and development, and apply these findings to improving plant production. With laboratories ranging in subject area from metabolomics, to functional genomics, to plant regulation and productivity, to plant evolution and adaptation, the PSC's broad scope grants it a unique position in the network of modern plant science research. In cooperation with universities, research institutes and industry, the PSC is working to ensure a stable supply of food, materials, and energy to support a growing world population and its pressing health and environmental needs.
gro-pr | Research asia research news
Single-stranded DNA and RNA origami go live
15.12.2017 | Wyss Institute for Biologically Inspired Engineering at Harvard
New antbird species discovered in Peru by LSU ornithologists
15.12.2017 | Louisiana State University
DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
15.12.2017 | Power and Electrical Engineering
15.12.2017 | Materials Sciences
15.12.2017 | Life Sciences