Abstract
Rice cultivation under cadmium (Cd) contaminated soil often results in reduced growth with excess grain Cd concentrations. A pot experiment was conducted to assess the potential of ultrasonic seed treatment to alleviate Cd stress in rice. Seeds of two aromatic rice cultivars i.e., Xiangyaxiangzhan and Meixiangzhan 2 and two non-aromatic rice cultivars i.e., Huahang 31 and Guangyan 1 were exposed to ultrasonic waves for 1.5 min in 20-40 KHz mixing frequency. The experimental treatments were comprised of untreated seeds (U0) and ultrasonic treated seeds (U1) transplanted in un-contaminated soil (H0) and Cd-contaminated soil (H1). Results revealed that Cd contents and Cd accumulation in grain in U1 were 33.33-42.31% and 12.86-57.58% lower than U0 for fragrant rice cultivars under H1. Meanwhile, biomass production was higher in U1 than U0 under H0 and better yield was assessed in U1 for all cultivars under H1. The activity of peroxidase (POD) in flag leaves was increased by 8.28-115.65% for all cultivars while malondialdehyde (MDA) contents were significantly decreased in U1 compared with U0 under H0. Conclusively, ultrasonic treatment modulated Cd distribution and accumulation in different parts while improved physiological performance as well as yield and grain quality of rice under Cd contaminated conditions.
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Claims 7
Claim · model-written summary
Ultrasonic treatment lowered grain Cd contents by 33.33-42.31% in fragrant rice under contaminated soil.
- Taxon
- rice
Oryza sativat0 - Organ / stage
- graine0
- Treatment
- ultrasonic treated seeds (U1)e1
- Outcome
- Cd contentse0
- Direction
- lowere0
- Value
- 33.33-42.31%e0
- Qualifier
- under H1e0
- Comparator
- U0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd contents and Cd accumulation in grain in U1 were 33.33-42.31% and 12.86-57.58% lower than U0 for fragrant rice cultivars under H1.”
e1“ultrasonic treated seeds (U1)”
t0“rice”
Claim · model-written summary
Ultrasonic treatment lowered grain Cd accumulation by 12.86-57.58% in fragrant rice under contaminated soil.
- Taxon
- riceOryza sativat0
- Treatment
- ultrasonic treated seeds (U1)e1
- Outcome
- Cd accumulation in graine0
- Direction
- lowere0
- Value
- 12.86-57.58%e0
- Qualifier
- under H1e0
- Comparator
- U0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd contents and Cd accumulation in grain in U1 were 33.33-42.31% and 12.86-57.58% lower than U0 for fragrant rice cultivars under H1.”
e1“ultrasonic treated seeds (U1)”
t0“rice”
Claim · model-written summary
Biomass production was higher with ultrasonic treatment under uncontaminated soil.
- Taxon
- riceOryza sativat0
- Treatment
- ultrasonic treated seeds (U1)e1
- Outcome
- biomass productione0
- Direction
- highere0
- Qualifier
- under H0e0
- Comparator
- U0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biomass production was higher in U1 than U0 under H0”
e1“ultrasonic treated seeds (U1)”
t0“rice”
Claim · model-written summary
Yield was better with ultrasonic treatment for all cultivars under contaminated soil.
- Taxon
- riceOryza sativat0
- Treatment
- ultrasonic treated seeds (U1)e1
- Outcome
- yielde0
- Direction
- bettere0
- Qualifier
- all cultivars under H1e0
- Comparator
- untreated seeds (U0)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“better yield was assessed in U1 for all cultivars under H1”
e1“untreated seeds (U0) and ultrasonic treated seeds (U1)”
t0“rice”
Claim · model-written summary
Ultrasonic treatment increased flag-leaf peroxidase activity by 8.28-115.65% for all cultivars.
- Taxon
- riceOryza sativat0
- Organ / stage
- flag leavese0
- Treatment
- ultrasonic treated seeds (U1)e1
- Outcome
- activity of peroxidase (POD)e0
- Direction
- increasede0
- Value
- 8.28-115.65%e0
- Comparator
- untreated seeds (U0)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activity of peroxidase (POD) in flag leaves was increased by 8.28-115.65% for all cultivars”
e1“untreated seeds (U0) and ultrasonic treated seeds (U1)”
t0“rice”
Claim · model-written summary
Ultrasonic treatment significantly decreased malondialdehyde contents under uncontaminated soil.
- Taxon
- riceOryza sativat0
- Treatment
- ultrasonic treated seeds (U1)e1
- Outcome
- malondialdehyde (MDA) contentse0
- Direction
- decreasede0
- Qualifier
- under H0e0
- Comparator
- U0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“malondialdehyde (MDA) contents were significantly decreased in U1 compared with U0 under H0”
e1“ultrasonic treated seeds (U1)”
t0“rice”
Claim · model-written summary
The authors conclude ultrasonic treatment modulated Cd distribution and accumulation across plant parts.
- Taxon
- riceOryza sativat0
- Treatment
- ultrasonic treatmente0
- Outcome
- Cd distribution and accumulatione0
- Qualifier
- in different partse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ultrasonic treatment modulated Cd distribution and accumulation in different parts”
t0“rice”
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