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Spatial distribution of fossil fuel derived CO_(2) over India using radiocarbon measurements in crop plants

Journal of Environmental Sciences 2023年第2期124卷 19-30页

作者： Rajveer Sharma Ravi Kumar Kunchala Sunil Ojha Pankaj Kumar Satinath Gargari Sundeep Chopra Inter University Accelerator Centre New Delhi 110067India Centre for Atmospheric Sciences Indian Institute of Technology DelhiNew Delhi 110016India

Examining the contribution of fossil fuel CO_(2) to the total CO_(2) changes in the atmosphere is of primary concern due to its alarming levels of fossil fuel emissions over the globe,specifically developing countries.Atmospheric radiocarbon represents an important observational constraint and utilized to trace fossil fuel derived CO_(2)(CO_(2ff))in the atmosphere.For the first time,we have presented a detailed analysis on the spatial distribution of fossil fuel derived CO_(2)(CO_(2ff))over India using radiocarbon(Δ14C)measurements during three-year period.Analysis shows that theΔ14C values are varying between 29.33‰ to-34.06‰ across India in the year 2017,where highest value belongs to a location from Gujarat while lowest value belongs to a location from Chhattisgarh.Based on the14C patterns,spatial distributions of CO_(2ff) mole fractions have been determined over India and the calculated values of CO_(2ff) mole fractions are varying between 4.85 ppm to 26.59 ppm across India.It is also noticed that the highest CO_(2ff) mole fraction is observed as 26.59 ppm from a site in Chhattisgarh.CO_(2ff) mole fraction values from four high altitude sites are found to be varied between 4.85 ppm to 14.87 ppm.Effect of sampling different crop plants from the same growing season and different crop plant organs(grains,leaves,stems)on theΔ14C and CO_(2ff) have been studied.Annual and intra seasonal variations in theΔ14C and CO_(2ff) mole fractions have also been analyzed from a rural location(Dholpur,Rajasthan).

关键词： Carbon dioxide crop plants Fossil fuel CO_(2) Radiocarbon measurements

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Reversible protein phosphorylation, a central signaling hub to regulate carbohydrate metabolic networks

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作物学报:英文版 2023年第5期11卷 1279-1286页

作者： Fengyi Gao Liang Zhang James RLloyd Wenbin Zhou Yanmei Chen State Key Laboratory of Plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBeijing 100193China College of Biology and Food Shangqiu Normal UniversityShangqiu 476000HenanChina College of Life Science Henan Normal UniversityXinxiang 453007HenanChina Department of Genetics Institute for Plant BiotechnologyStellenbosch University7600 StellenboschSouth Africa Institute of crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China

plants produce a range of carbohydrates to meet their growth and developmental needs. Protein reversible phosphorylation plays key roles in coordinating multiple metabolic pathways and integrating diverse internal and external cues. Understanding such regulatory metabolism will provide novel resources for breeding and crop management by modulating metabolic pathways for control of growth and stress response. In this review, we summarize the complex, multifaceted functions of protein phosphorylation and their connections to plant metabolism. We focus particularly on carbohydrate metabolic pathways that are controlled by key kinases and discuss how they are linked to downstream changes in physiology, important agronomic traits and crop quality.

关键词： crop plants Metabolomics SnRK kinase TOR kinase Transcription factor Phosphoproteomics

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