Difference between revisions of "Team:FAFU-CHINA"
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Overview | Overview | ||
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<!-- 前面内容 --> | <!-- 前面内容 --> | ||
| − | <p style="text-align:center; color: #6a8d2c ; font-size: | + | <p style="text-align:center; color: #6a8d2c ; font-size:35px"><br/><br/><br/>Metalliferous soils</p> |
</div> | </div> | ||
<div class="back"> | <div class="back"> | ||
<!-- 背面内容 --> | <!-- 背面内容 --> | ||
| − | <p> Soil polluted by heavy metals represent an important environmental problem due to the toxic effects of metals, their accumulations throughout the food chain and the additional risk of groundwater contamination. | + | <p> Soil polluted by heavy metals represent an important environmental problem due to the toxic effects of metals, their accumulations throughout the food chain and the additional risk of groundwater contamination. |
<br/> </p> | <br/> </p> | ||
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<div class="front"> | <div class="front"> | ||
<!-- 前面内容 --> | <!-- 前面内容 --> | ||
| − | <p style="text-align:center; color: #6a8d2c ; font-size: | + | <p style="text-align:center; color: #6a8d2c ; font-size:35px"><br/><br/><br/>ACC Deaminase</p> |
</div> | </div> | ||
<div class="back"> | <div class="back"> | ||
<!-- 背面内容 --> | <!-- 背面内容 --> | ||
| − | <div>1-aminocyclopropane-1-carboxylate (ACC) deaminase, which regulates ethylene production by metabolizing ACC (an immediate precursor of ethylene biosynthesis in higher plants) into α-ketobutyrate and ammonia，simultaneously enhances plant growth and biomass by P solubilization and uptake particularly under stress condition by heavy metals. In our project, we aimed for increasing ability of transgenic plants expressing the bacterial enzyme ACC deaminase to accumulate heavy metals.</div> | + | <div> 1-aminocyclopropane-1-carboxylate (ACC) deaminase, which regulates ethylene production by metabolizing ACC (an immediate precursor of ethylene biosynthesis in higher plants) into α-ketobutyrate and ammonia，simultaneously enhances plant growth and biomass by P solubilization and uptake particularly under stress condition by heavy metals. In our project, we aimed for increasing ability of transgenic plants expressing the bacterial enzyme ACC deaminase to accumulate heavy metals.</div> |
</div> | </div> | ||
</div> | </div> | ||
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<div class="front"> | <div class="front"> | ||
<!-- 前面内容 --> | <!-- 前面内容 --> | ||
| − | <p style="text-align:center; color: #6a8d2c ; font-size: | + | <p style="text-align:center; color: #6a8d2c ; font-size:35px"><br/><br/><br/>Phytoremediation</p> |
</div> | </div> | ||
<div class="back"> | <div class="back"> | ||
<!-- 背面内容 --> | <!-- 背面内容 --> | ||
| − | <div>Phytoextraction is based on the use of hyperaccumulator plants, which can tolerate and accumulate high concentration of metals. Ideal hyperaccumulators require the characteristics of deep rooted, rapid growth and a high amount of biomass. In fact, many hyperaccumulators are slow in growth, produce low bow biomass and cannot grow in metal-stress soil. </div> | + | <div> Phytoextraction is based on the use of hyperaccumulator plants, which can tolerate and accumulate high concentration of metals. Ideal hyperaccumulators require the characteristics of deep rooted, rapid growth and a high amount of biomass. In fact, many hyperaccumulators are slow in growth, produce low bow biomass and cannot grow in metal-stress soil. </div> |
</div> | </div> | ||
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<!-- 前面内容 --> | <!-- 前面内容 --> | ||
| − | <p style="text-align:center; color: #6a8d2c ; font-size: | + | <p style="text-align:center; color: #6a8d2c ; font-size:35px"><br/><br/><br/>Phosphate-solubilizing bacteria</p> |
</div> | </div> | ||
<div class="back"> | <div class="back"> | ||
<!-- 背面内容 --> | <!-- 背面内容 --> | ||
| − | <div><p style="font-size:17px">Phosphorus is the second important key element after nitrogen as a mineral nutrient in terms of quantitative plant equirement. However, plants can use only a small amount of this P since 75–90% of added P is precipitated by metal–cation complexes, and rapidly becomes fixed in soils. In this regard, phosphate solubilizing microbes are considered as the most efficient and eco-friendly means for phytoremediation of metalliferous soils. | + | <div><p style="font-size:17px"> Phosphorus is the second important key element after nitrogen as a mineral nutrient in terms of quantitative plant equirement. However, plants can use only a small amount of this P since 75–90% of added P is precipitated by metal–cation complexes, and rapidly becomes fixed in soils. In this regard, phosphate solubilizing microbes are considered as the most efficient and eco-friendly means for phytoremediation of metalliferous soils. |
Although, several bacterial strains have been identified as PSB their performance under in situ conditions is not reliable. Therefore,we genetically engineered our chassis B. megaterium as a new strategy to accelerate phytoremediation process.</p> | Although, several bacterial strains have been identified as PSB their performance under in situ conditions is not reliable. Therefore,we genetically engineered our chassis B. megaterium as a new strategy to accelerate phytoremediation process.</p> | ||
</div> | </div> | ||
Revision as of 02:06, 23 October 2017
Overview
Synergism of Phosphate-solubilizing microoranisms-plant
interactions for bioremediation of metalliferous soils
Continued worldwide industrialization has caused extensive environmental and human health problems. A wide variety of chemicals, e.g., heavy metals, pesticides, chlorinated solvents, etc., have been detected in different natural resources such as soil, water, and air. Among the pollutants, the heavy metals are of concern to human health due to their cytotoxicity, mutagenicity, and carcinogenicity.
Metalliferous soils
Soil polluted by heavy metals represent an important environmental problem due to the toxic effects of metals, their accumulations throughout the food chain and the additional risk of groundwater contamination.
ACC Deaminase
1-aminocyclopropane-1-carboxylate (ACC) deaminase, which regulates ethylene production by metabolizing ACC (an immediate precursor of ethylene biosynthesis in higher plants) into α-ketobutyrate and ammonia，simultaneously enhances plant growth and biomass by P solubilization and uptake particularly under stress condition by heavy metals. In our project, we aimed for increasing ability of transgenic plants expressing the bacterial enzyme ACC deaminase to accumulate heavy metals.
Phytoremediation
Phytoextraction is based on the use of hyperaccumulator plants, which can tolerate and accumulate high concentration of metals. Ideal hyperaccumulators require the characteristics of deep rooted, rapid growth and a high amount of biomass. In fact, many hyperaccumulators are slow in growth, produce low bow biomass and cannot grow in metal-stress soil.
Phosphate-solubilizing bacteria
Phosphorus is the second important key element after nitrogen as a mineral nutrient in terms of quantitative plant equirement. However, plants can use only a small amount of this P since 75–90% of added P is precipitated by metal–cation complexes, and rapidly becomes fixed in soils. In this regard, phosphate solubilizing microbes are considered as the most efficient and eco-friendly means for phytoremediation of metalliferous soils. Although, several bacterial strains have been identified as PSB their performance under in situ conditions is not reliable. Therefore,we genetically engineered our chassis B. megaterium as a new strategy to accelerate phytoremediation process.
