Researchers have discovered a new way to increase plant growth by suppressing the natural response to environmental stress. The scientists have found a modifier protein that can be used to interfere with the plant's growth repression proteins independently of the previously identified hormone Gibberellin. They believe this will lead to higher crop yields, even in unfavorable conditions.
When plants face difficult conditions, like drought or high soil salinity, they produce growth-regulating DELLA proteins. It is already known that Gibberlin can reverse the effects of DELLA proteins, but the research team, led by Durham University’s Dr Ari Sadanandom, discovered that the Small Ubiquitin-like Modifier (SUMO) protein also reduces the amount of growth repression experienced.
They demonstrated the ability to block the mechanism of control growth, GID1 receptors, when DELLAs were joined with the SUMO protein. The subsequent obstruction of GID1 by SUMO-paired DELLAs led to improved growth during stress. This was done independently of the much studied growth hormone Gibberellin, that plants use to break down DELLA proteins.
The study, which involved members from the University of Nottingham, Rothamsted Research and the University of Warwick, was conducted on Thale Cress, but the team believes the research could also be applied to commercial crops, such as barley, corn, rice and wheat. They researchers believe the interaction between the modifier protein and the repressor proteins can be modified in a number of ways, including using biotechnology techniques and through conventional plant breeding methods.
“What we have found is a molecular mechanism in plants which stabilizes the levels of specific proteins that restrict growth in changing environmental conditions,” says Dr Sadanandom. “This mechanism works independently of the Gibberellin hormone, meaning we can use this new understanding for a novel approach to encourage the plant to grow, even when under stress. If you are a farmer in the field then you don’t want your wheat to stop growing whenever it is faced with adverse conditions. If we can encourage the crops to keep growing, even when faced by adverse conditions, it could give us greater yields and lead to sustainable intensification of food production that we must achieve to meet the demands on the planet’s finite resources.”
The research was published in the journal Developmental Cell and was funded by the Biotechnology and Biological Sciences Research Council. It is the subject of pending patent applications and commercial rights are available from Plant Bioscience Limited, Durham’s commercialization partner for this technology.
Source: Durham University
Natural selection has catered for a conservative/winding down of production mechanism in the absence of suitable soil nutrients or reduced available water. It allows the plant to continue to produce some reduced percentage of viable seems for its own future reproduction.
If you turn off this mechanism, then the resultant seeds can not technically be 100%. Not unless somehow the plant can harness beyond its capacity. Which translates to it ignoring its own available soil reserves to supplement the seed, which might translate to more protein volume, but producing seeds that are not mature and cannot reproduce (or have a limited reproduction). Sounds like a Monsanto stunt..
Well said! There is clearly the potential to force the farmer into having to buy proprietary seed if he cannot rely on what he retains for that purpose from his harvest.
Climate change is only nibbling at our ankles at present. When it really shows its teeth, we are going to need products such as this. I just hope that any company that adopts it has ethics very much at the front of their thinking, not profit and damn the cost.
Especially if Monsanto gets it's fingers in it. There have been cases where these companies sue farmers adjacent to fields sown with their GSM seed because cross polination, due to wind and polinator migration, added their copyrighted/patented genes to the neighbors crop without his/her doing anything to encourage it.
Of course the ruling was in their favor and hey got a huge sum for the farmers "theft" of intelectual property these days money buys judgements and justice has little to do with it. If justice were served they would have been required to remove all the modified seed at their own expense and replace the farmers seed with organic natural seed. Then cease selling their GSM product until they could guarantee it would not contaminate additional crops.
The technique decribed has only been tested on something called "Thale Cress." The researchers hope is that it will be viable on a number of food crops, including barley, corn, rice and wheat.