The new channel improves the efficiency of plant carbon water utilization

has long seemed impossible to promote photoneed cooperative carbon assination and improve plant water efficiency (WUE). Recently, researchers at the University of Glasgow in the United Kingdom found that enhanced pore dynamics can improve WUE without affecting plant carbon fixation. The findings were published in the journal Science.
and contradictory effects of plant leaf pores, which promote carbon dioxide flow into the leaves for photoneedle and limit the flow of water through evapotental action. This means that the pores absorb CO2 while also losing some of their moisture through steaming.
previous studies have focused efforts to improve WUE on reducing pore density. "The pore density responds to changes in co2 concentrations, light, atmospheric relative humidity and shedding acids in the atmosphere, and it's not easy to reduce pore density." "Furthermore, this approach significantly reduces plant photovisitor efficiency," said Wang Yizhou, one of the authors of the paper and a researcher at Zhejiang University's School of Agriculture and Biotechnology. In
2015, Anna Moroni, a professor at the University of Milan in Italy, and others developed Blu-ray-induced channel 1 (BLINK1), which activates the K-channel in zebrafish. This may be applied to plants to regulate their pores. Michael Blatt, a professor at the University of Glasgow and a professor at Zhejiang University, told China Science that he has been working on ion transport and quantitative modeling of pore defense cells for more than 30 years and is very interested in developing strategies to improve water use in crops through pore function.
researchers expressed the synthetic photocell-controlled K-channel BLINK1 in the defense cells in the amoeba pores, as a tool for regulating plant-defending cell K-conductivity and accelerating changes in the aperture of the light pores, enhancing the solute current that drives the pore aperture and accelerating the opening and closing of the pores under light.according to
Blatt, the study attempts to speed up the opening/closing of pores by accelerating changes in light intensity: when light intensity increases, the pores open faster, increasing the amount of CO2 entering the plant, and when the light intensity decreases, the pores close faster, reducing water loss. By paying attention to the dynamics of pore motion, the effects of CO2 increase and moisture loss are effectively separated temporarily.
To verify that BLINK1 in the defense cells played a role, the researchers tested the BLINK1 genetically modified strains that grew during daylight and found no significant difference from normal plants in terms of biomass accumulation, wreath area expansion, or water use.
, the researchers looked at plants in fluctuating light. The study found that as clouds passed over plants, pore response slowed and photoneedle rates decreased. "It is understood that slower pore dynamics limit gas exchange." Wang Yizhou said.
same time, the researchers looked at the BLINK1 genetically modified strains that grew during daytime fluctuations in daylight and found that BLINK1 accelerated the rate of pore motion. Compared with non-GMO strains, the instantaneous rate of dry mass or carbon assification per unit of water evaporation of BLINK1 genetically modified strains increased significantly, which proved that BLINK1 is beneficial to carbon assification and water utilization.
addition, the researchers found that the total dry matter quality of plant growth in the BLINK1 genetically modified strain was similar to that of steady-state conversion under water-filled and water-scarce conditions, demonstrating the stability of WUE by improving pore dynamics.
wang said the study is of great application and hopes to explore its use in some cash crops, such as cotton, to increase crop yields.
Blatt said the pore defense cell experiment was only part of the study, and the next step is for the team to use photogenetics tools to understand functional links between different tissue types in plants. (Source: China Science Daily, Bu Ye)