Alleviation of Cadmium Toxicity in Rice by γ-Polyglutamic Acid Produced by Bacillus subtilis
The effect of γ-polyglutamic acid (PGA) produced by Bacillus subtilis on cadmium (Cd)-damaged rice was investigated in experiments with pots containing soil contaminated with Cd at a concentration of 0-200 mg/kg and PGA at a concentration of 0-500 mg/kg. Although Cd reduced the growth and productiv...
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| Format: | Article |
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Thai Society of Higher Eduction Institutes on Environment
2017-01-01
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| Series: | EnvironmentAsia |
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| Online Access: | http://tshe.org/ea/pdf/vol10no1-08.pdf |
| _version_ | 1828308724820738048 |
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| author | Nuchnapa Kotabin Kritchaya Issakul Elke Pawelzik Yasutaka Tahara Orawan Chunhachart |
| author_facet | Nuchnapa Kotabin Kritchaya Issakul Elke Pawelzik Yasutaka Tahara Orawan Chunhachart |
| author_sort | Nuchnapa Kotabin |
| collection | DOAJ |
| description | The effect of γ-polyglutamic acid (PGA) produced by Bacillus subtilis on cadmium (Cd)-damaged rice was
investigated in experiments with pots containing soil contaminated with Cd at a concentration of 0-200 mg/kg and PGA at a concentration of 0-500 mg/kg. Although Cd reduced the growth and productivity of rice in comparison to the control,
the addition of 500 mg/kg of PGA alleviated the effects of Cd toxicity in rice, resulting in increases in shoot and root
lengths, the vigor of the rice and the number of seeds per panicle. Micrographs of ultrathin sections of root cells showed that
the addition of 500 mg/kg of PGA decreased Cd accumulation in both the epidermis and the intracellular space of cortex,
suggesting that PGA reduced Cd transportation into root cells. Based on these results and the metal-binding characteristics
of PGA, it is conceivable that the mechanism by which PGA alleviates Cd toxicity is the extracellular formation of
Cd-PGA complexes. |
| first_indexed | 2024-04-13T15:18:00Z |
| format | Article |
| id | doaj.art-a65d1aac6b784a05a2a4587b0c5a4d35 |
| institution | Directory Open Access Journal |
| issn | 1906-1714 |
| language | English |
| last_indexed | 2024-04-13T15:18:00Z |
| publishDate | 2017-01-01 |
| publisher | Thai Society of Higher Eduction Institutes on Environment |
| record_format | Article |
| series | EnvironmentAsia |
| spelling | doaj.art-a65d1aac6b784a05a2a4587b0c5a4d352022-12-22T02:41:47ZengThai Society of Higher Eduction Institutes on EnvironmentEnvironmentAsia1906-17142017-01-01101637210.14456/ea.2017.8Alleviation of Cadmium Toxicity in Rice by γ-Polyglutamic Acid Produced by Bacillus subtilisNuchnapa Kotabin0Kritchaya Issakul1Elke Pawelzik2Yasutaka Tahara3Orawan Chunhachart4Bioproducts Science Program, Department of Science, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus, Nakhon Pathom, 73140, Thailand and Center for Advanced Studies in Tropical Natural Resources, NRU-KU, Kasetsart University, Chatuchak, Bangkok, 10900, ThailandDepartment of Environmental Science, School of Energy and Environment, University of Payao, Phayao, 56000, ThailandSection Quality of Plant Products, Department of Crop Sciences, Faculty of Agricultural Sciences, Georg-August-University Goettingen, Goettingen 37075, GermanyDepartment of Applied Biological Chemistry, Faculty of Agriculture, Shizuoka University, 836 Ohya, Shizuoka 422-8529, JapanBioproducts Science Program, Department of Science, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus, Nakhon Pathom, 73140, Thailand and Center for Advanced Studies in Tropical Natural Resources, NRU-KU, Kasetsart University, Chatuchak, Bangkok, 10900, ThailandThe effect of γ-polyglutamic acid (PGA) produced by Bacillus subtilis on cadmium (Cd)-damaged rice was investigated in experiments with pots containing soil contaminated with Cd at a concentration of 0-200 mg/kg and PGA at a concentration of 0-500 mg/kg. Although Cd reduced the growth and productivity of rice in comparison to the control, the addition of 500 mg/kg of PGA alleviated the effects of Cd toxicity in rice, resulting in increases in shoot and root lengths, the vigor of the rice and the number of seeds per panicle. Micrographs of ultrathin sections of root cells showed that the addition of 500 mg/kg of PGA decreased Cd accumulation in both the epidermis and the intracellular space of cortex, suggesting that PGA reduced Cd transportation into root cells. Based on these results and the metal-binding characteristics of PGA, it is conceivable that the mechanism by which PGA alleviates Cd toxicity is the extracellular formation of Cd-PGA complexes.http://tshe.org/ea/pdf/vol10no1-08.pdfBacillus subtilisγ-polyglutamic acidcadmiumrice |
| spellingShingle | Nuchnapa Kotabin Kritchaya Issakul Elke Pawelzik Yasutaka Tahara Orawan Chunhachart Alleviation of Cadmium Toxicity in Rice by γ-Polyglutamic Acid Produced by Bacillus subtilis EnvironmentAsia Bacillus subtilis γ-polyglutamic acid cadmium rice |
| title | Alleviation of Cadmium Toxicity in Rice by γ-Polyglutamic Acid Produced by Bacillus subtilis |
| title_full | Alleviation of Cadmium Toxicity in Rice by γ-Polyglutamic Acid Produced by Bacillus subtilis |
| title_fullStr | Alleviation of Cadmium Toxicity in Rice by γ-Polyglutamic Acid Produced by Bacillus subtilis |
| title_full_unstemmed | Alleviation of Cadmium Toxicity in Rice by γ-Polyglutamic Acid Produced by Bacillus subtilis |
| title_short | Alleviation of Cadmium Toxicity in Rice by γ-Polyglutamic Acid Produced by Bacillus subtilis |
| title_sort | alleviation of cadmium toxicity in rice by γ polyglutamic acid produced by bacillus subtilis |
| topic | Bacillus subtilis γ-polyglutamic acid cadmium rice |
| url | http://tshe.org/ea/pdf/vol10no1-08.pdf |
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