この研究は、リョクトウ（Vigna radiata）の発芽、初期成長、タンパク質と炭水化物の含有量、およびいくつかの酵素の活性に対する携帯電話からの電磁放射（電力密度8.55 μW / cm2）の影響を調べた。電磁放射へのばく露時間は、0.5、1、2、および4時間とした。その結果、いずれのばく露時間でも、ばく露後にリョクトウの苗の長さおよび乾燥重量が有意に減少した；その上、電磁放射を受けたリョクトウにおいて、タンパク質および炭水化物の含有量が減少した；しかし、電磁放射を受けた植物の幼根において、プロテアーゼ、α-アミラーゼ、β-アミラーゼ、ポリフェノールオキシダーゼ、およびペルオキシダーゼの活性は増強した；これらの増強は、電磁放射によって誘発されるストレスに対する防護対策が提供されたことを示唆する、と報告している。
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To study the effects of cell phone electromagnetic fields on germination and growth of mung bean.
Additionally, the changes in biomolecules and some enzyme activities were investigated to better understand the mechanism of action of mobile phones on early growth of plants.
Five sets of 50 seeds were divided into four exposure groups (exposed for 0.5, 1, 2, or 4 h) and one control group. Exposed seeds were allowed to germinate and grow for seven days before measurements were performed.
| ばく露 | パラメータ |
|---|---|
|
ばく露1:
900 MHz
ばく露時間:
continuous for 0.5 h, 1 h, 2 h, 4 h
|
|
| 周波数 | 900 MHz |
|---|---|
| タイプ |
|
| ばく露時間 | continuous for 0.5 h, 1 h, 2 h, 4 h |
| ばく露の発生源／構造 |
|
|---|---|
| チャンバの詳細 | 47.5 cm x 26 cm x 17.5 cm closed shielded room acting as Faraday cage, maintained at 25 °C |
| ばく露装置の詳細 | seeds placed equidistantly between two GSM cell phones which were used in conversation mode |
| 測定量 | 値 | 種別 | Method | Mass | 備考 |
|---|---|---|---|---|---|
| 電力密度 | 8.55 µW/cm² | average over time | 測定値 | - | - |
Exposure to cell phone electromagnetic fields affected the germination of mung beans depending upon the time of exposure: There was no change in seed germination when the seeds were exposed for less or equal two hours. However, exposure to an electromagnetic field for 4 h reduced the germination by 50%.
Additionally, cell phone exposure significantly reduced the seedling length and dry weight of mung bean after exposure for 0.5, 1, 2, and 4 h.
Furthermore, the contents of proteins and carbohydrates were reduced in electromagnetic field exposed plants. However, the enzyme activities of proteases, alpha-amylases, beta-amylases, polyphenol oxidases, and peroxidases were enhanced in mobile phone exposed radicles indicating their role in providing protection against electromagnetic field-induced stress.
The authors conclude that cell phone electromagnetic fields impair early growth of mung bean seedlings by inducing biochemical changes.
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