Barley breeders may soon develop varieties of barley which are both less sensitive to high concentrations of salt ions in the plant and more resistant to osmotic stress caused by saline soil.
Nguyen Viet Long, who hopes to obtain his doctorate at Wageningen University (part of Wageningen UR) on 2 November 2012, has found two sequence regions in the chromosomes of barley that contain the genes for these two properties.
The section comprising resistance to osmotic stress in particular is receiving a great deal of international attention from scientists working on salt tolerance. Nguyen is hoping that barley varieties which can be cultivated in saline soils will reach the market within around five years, thanks in part to his results.
Salinisation of agricultural land is a global problem. An area two hundred times the size of the Netherlands has already become too saline to use for food production. One fifth of this represents some of the best irrigated farmlands in the world. And climate change is aggravating the problem even further.
This is why researchers and plant breeders around the world are looking for opportunities to develop salt-tolerant crops for arable farming and horticulture. Of course this mostly focuses on the major food crops such as grains and potatoes. The Vietnamese PhD student Nguyen examined the possibility of adapting barley to saline conditions. Since barley is a grain, many of the results of this research will be useful to scientists studying wheat or rice. Nguyen worked together with the Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK) in Germany, which has a large collection of different varieties of barley.
Nguyen examined some two hundred different varieties, including barley types from the Middle East. This is the area where barley originated, which means that large genetic variation can be found there – and the greater the genetic variation of examined varieties, the higher the chance of finding genetic factors that can be used in plant breeding. Being able to investigate so many different types of barley enabled Nguyen to determine the positions of the important hereditary properties faster and more accurately. In his research, Nguyen studied the growth of barley plants in high salt conditions.
He looked at a number of plant characteristics that are important for salt tolerance such as delayed yellowing of leaves, number of shoots and ion content in the leaves. By linking these observations to DNA analysis, he found two positions in the barley genome that affect the plant’s resistance to salt.
One of the two areas, on chromosome 4, affects how the plant deals with increased concentrations of salt ions such as Na+ and Cl-. The plant uses a kind of ‘ion pump’ to prevent these elevated i
on concentrations from reaching the leaves. This allows the photosynthesis in the leaves to continue as normal, permitting the plant to continue growing and producing seeds. The discovery of a similar mechanism in wheat was in the news quite recently.
The second area identified by Nguyen, on chromosome 6, contains one or more genes that make barley plants less sensitive to osmotic stress, which is the result of the high concentration of ions in saline soil. In this situation, plants absorb water less easily, which directly affects growth of the plants. This discovery is a real breakthrough, and has led to considerable international interest.
The precise genes responsible for salt tolerance in barley will probably be identified soon.
“Examining the genetic makeup and salt tolerance of so many different types of barley enabled me to map the interesting areas quickly and accurately,” Nguyen explains. “I am therefore hopeful that we will have barley varieties that can be grown on saline soils within around five years “ This research was funded by Wageningen UR Plant Breeding and the Vietnamese Ministry of Education.
Note for the editors
Further information: Erik Toussaint + 31 6 51 56 59 49, email@example.com Wageningen University is part of the international expertise organisation Wageningen UR (University & Research centre). Our mission is ‘To explore the potential of nature to improve the quality of life’.
Within Wageningen UR, nine research institutes – both specialised and applied – have joined forces with Wageningen University and Van Hall Larenstein University of Applied Sciences to help answer the most important questions in the domain of healthy food and living environment. With approximately 40 locations (in the Netherlands, Brazil and China), 6500 members of staff and 10,000 students, Wageningen UR is one of the leading organisations in its domain worldwide. The integral approach to problems and the cooperation between the exact sciences and the technological and social disciplines are at the heart of the Wageningen Approach.
Erik Toussaint | Wageningen University
New insight into why Pierce's disease is so deadly to grapevines
11.06.2018 | University of California - Davis
Where are Europe’s last primary forests?
29.05.2018 | Humboldt-Universität zu Berlin
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
Light detection and control lies at the heart of many modern device applications, such as smartphone cameras. Using graphene as a light-sensitive material for...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
19.06.2018 | Physics and Astronomy
19.06.2018 | Life Sciences
19.06.2018 | Physics and Astronomy