Abstract
It has been confirmed that thiourea (TU) was effective in inhibiting urea hydrolysis and nitrite formation. However, few studies focused on the toxicological effects and environmental impacts of TU. In this study, the influences of TU on the soil pH and available metals contents were reported. The addition of thiourea to the urea-treated soils led to a slower decrease or even increase in soil pH. The application of thiourea had slight influence on the content of available Cu in soils. Mn content increased with increasing TU concentration, however, the changes of Zn and Al contents were opposite. Pot culture experiments were conducted to investigate the effects of TU on the physiological characteristics of maize seedlings, including the plant growth, chlorophyll (CHL) content, metal ions uptakes and malondialdehyde (MAD) content in the leaves. 1 mmol kg - 1 soil thiourea significantly inhibited the growth of maize seedlings. The application of thiourea enhanced the Mn accumulation in leaves, and negatively affected the Fe uptake, which thereby inhibited the biosynthesis of CHL. There was not any noticeable difference in MDA content in plants treated with 1-2.5 mmol kg - 1 soil thiourea. An obvious increase of MDA content was found at 5 mmol kg - 1 soil thiourea.
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Claims 6
Claim · model-written summary
Thiourea at 1 mmol kg - 1 soil significantly inhibited maize seedling growth.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1 mmol kg - 1 soil thiourea significantly inhibited the growth of maize seedlings”
Claim · model-written summary
Thiourea enhanced manganese accumulation in maize leaves.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of thiourea enhanced the Mn accumulation in leaves”
t0“Maize Physiological Characteristics”
Claim · model-written summary
Thiourea negatively affected maize iron uptake.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“negatively affected the Fe uptake”
t0“Thiourea on Metals Availability and Maize Physiological Characteristics”
Claim · model-written summary
Thiourea inhibited chlorophyll biosynthesis in maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which thereby inhibited the biosynthesis of CHL”
t0“Thiourea on Metals Availability and Maize Physiological Characteristics”
Claim · model-written summary
Maize MDA content did not noticeably differ at 1-2.5 mmol kg - 1 soil thiourea.
- Treatment
- 1-2.5 mmol kg - 1 soil thioureae0
- Outcome
- MDA contente0
- Direction
- not any noticeable differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was not any noticeable difference in MDA content in plants treated with 1-2.5 mmol kg - 1 soil thiourea”
t0“Maize Physiological Characteristics”
Claim · model-written summary
Maize MDA content increased at 5 mmol kg - 1 soil thiourea.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An obvious increase of MDA content was found at 5 mmol kg - 1 soil thiourea”
t0“Maize Physiological Characteristics”
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