phytotoxicity of methylene blue to rice seedlings

نویسندگان

x.z. yu

y.x. feng

d.m. yue

چکیده

methylene blue is widely used in various industrial branches. due to insufficient treatment, its occurrence in wastewater is frequently detected, which may result in serious environment problems to aquatic organisms. hydroponic experiments were conducted with rice seedlings (oryza sativa l. cv. xzx 45) exposed to methylene blue to determine the effective concentration using relative growth rate and water use efficiency as response endpoints. results showed that acute toxicity of methylene blue to rice seedlings was evident. although a linear decrease in relative growth rate and water use efficiency was observed in rice seedlings with increasing methylene blue concentrations, relative growth rate of rice seedlings was more sensitive to change of methylene blue than water use efficiency. using non-linear regression, ec-48 h values for 10%, 20% and 50% inhibition of the relative growth rate were estimated to be 1.54, 3.22 and 10.13 mg mb/l for rice seedlings exposed to methylene blue, respectively, while smaller ec were obtained for 96 h exposure. in conclusion, the toxic response of young rice seedlings to methylene blue is obvious and inhibitory effects are highly dependent on response endpoints and the duration of exposure period.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Phytotoxicity of methylene blue to rice seedlings

Methylene blue is widely used in various industrial branches. Due to insufficient treatment, its occurrence in wastewater is frequently detected, which may result in serious environment problems to aquatic organisms. Hydroponic experiments were conducted with rice seedlings (Oryza sativa L. cv. XZX 45) exposed to methylene blue to determine the effective concentration using relative gr...

متن کامل

Kinetics and Equilibrium Studies of the Removal of Blue Basic 41 and Methylene Blue from Aqueous Solution Using Rice Stems

Synthetic dyes are among the most common contaminants of the environment. Therefore, the aim of this study was investigation the removal of Basic Blue 41 (BB41) and Methylene Blue (MB) from industrial effluents by useing raw and modified rice stems. In this study raw and modified rice stems treated chemically with Citric Acid (CA) and were used to explore the potentiality of rice stems for ...

متن کامل

Nitric oxide ameliorates zinc oxide nanoparticles-induced phytotoxicity in rice seedlings.

Nitric oxide (NO) has been found to function in enhancing plant tolerance to various environmental stresses. However, role of NO in relieving zinc oxide nanoparticles (ZnO NPs)-induced phytotoxicity remains unknown. Here, sodium nitroprusside (SNP, a NO donor) was used to investigate the possible roles and the regulatory mechanisms of NO in counteracting ZnO NPs toxicity in rice seedlings. Our ...

متن کامل

Methylene blue for MDI.

Bryer JB, Borrelli D J, Matthews EJ Jr, Kornetsky C (1983): The psychological correlates of the DST in depressed patients. Psychopharmacol Bull 19:633-637. Carroll B, Feinberg M, Greden J, et al (1981): A specific laboratory test for the diagnosis of melancholia. Arch Gen Psychiatry 38:15-22. Nelson WH, Khan A, Orr WW Jr, Tamragouri RN (1984): The dexamethasone suppression test: Interaction of ...

متن کامل

Methylene blue "avatar" brain.

Methylene blue is a safe and effective therapeutic agent used in a variety of different clinical settings, including as treatment for methemoglobinemia, reversing ifosfamide-induced encephalopa-thy, severe hepatopulmonary syndrome, and as a pressor during catecholamine-refractory septic shock (1). Of more relevance to neuropathologists, it has recently been experimentally tested as a dye in mul...

متن کامل

Stabilized with Methylene Blue

The in vitro viability, chemotaxis, and labeling stability of leukocytes labeled using 99mTc-exametazime stabilized with methylene blue were evaluated and compared with those obtained using nonstabilized 99mTc-exametazime. Methods: Two identical leukocyte populations, from 30 healthy donors, were labeled simultaneously using freshly prepared and 2-h-old stabilized 99mTc-exametazime. The followi...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
global journal of environmental science and management

ناشر: iran solid waste association

ISSN 2383-3572

دوره 1

شماره 3 2015

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023