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Proteome analysis of soybean roots subjected to short-term drought stress
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Proteome analysis of soybean roots subjected to short-term drought stress
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Journal Article
Proteome analysis of soybean roots subjected to short-term drought stress
2010
Overview
Drought is one of the most important constraints on the growth and productivity of many crops, including soybeans. However, as a primary sensing organ, the plant root response to drought has not been well documented at the proteomic level. In the present study, we carried out a proteome analysis in combination with physiological analyses of soybean roots subjected to severe but recoverable drought stress at the seedling stage. Drought stress resulted in the increased accumulation of reactive oxygen species and subsequent lipid peroxidation. The proline content increased in drought-stressed plants and then decreased during the period of recovery. The high-resolution proteome map demonstrated significant variations in about 45 protein spots detected on Comassie briliant blue-stained 2-DE gels. Of these, 28 proteins were identified by mass spectrometry; the levels of 5 protein spots were increased, 21 were decreased and 2 spots were newly detected under drought condition. When the stress was terminated by watering the plants for 4 days, in most cases, the protein levels tended towards the control level. The proteins identified in this study are involved in a variety of cellular functions, including carbohydrate and nitrogen metabolism, cell wall modification, signal transduction, cell defense and programmed cell death, and they contribute to the molecular mechanism of drought tolerance in soybean plants. Analysis of protein expression patterns revealed that proteins associated with osmotic adjustment, defense signaling and programmed cell death play important roles for soybean plant drought adaptation. The identification of these proteins provides new insight that may lead to a better understanding of the molecular basis of the drought stress responses.
Publisher
Springer,Springer Netherlands,Springer Nature B.V
Subject
/ Agronomy. Soil science and plant productions
/ Animal, plant and microbial ecology
/ Biological and medical sciences
/ Biomedical and Life Sciences
/ crops
/ Drought
/ Droughts
/ Ecology
/ Fundamental and applied biological sciences. Psychology
/ Gels
/ General agronomy. Plant production
/ Plants
/ Proline
/ Proteins
/ proteome
/ Roots
/ Soil-plant relationships. Soil fertility
/ Soil-plant relationships. Soil fertility. Fertilization. Amendments
/ Soybean
/ Soybeans
/ Stress
