Physiological and Biochemical Parameters as An Index for Herbicides Damage in Wheat Plants

Salem, Rehab; Elsobki, Ahmed E. A.

doi:10.21608/eajbsf.2021.182445

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…In general, photosynthetic organelles in plants are targeted by atrazine phytotoxicity, often resulting in a decrease in chlorophyll content in plants exposed to atrazine (Yang & Zhang, 2020;Salem & El-Sobki, 2021). However, atrazine did not affect the chlorophyll, carotenoid, and proline contents of the rice cultivar Leum Pua and waxy corn cultivar Muang Tam because the amounts of pigments and proline in the shoots of both plants grown in non-contaminated and atrazine-contaminated soil did not differ significantly (Table 5).…”

Section: Chlorophyll Carotenoid and Proline Contentsmentioning

confidence: 98%

Potential of Bacillus stercoris B.PNR2 to stimulate growth of rice and waxy corn under atrazine-contaminated soil

Somtrakoon,

Prasertsom,

Sangdee

et al. 2024

jaa

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The presence of atrazine residue in agricultural soil may affect crop growth and the activity of plant growth-promoting bacteria. Therefore, this study investigated the impact of atrazine contamination on indole-3-acetic acid (IAA) production by Bacillus stercoris B.PNR2. Subsequently, the ability of B. stercoris B.PNR2 to stimulate the seedling growth of rice cultivars RD6 and Leum Pua, as well as the waxy corn cultivar Muang Tam, under atrazine contamination, was determined. The results showed that B. stercoris B.PNR2 produced IAA under various atrazine concentrations, and atrazine was not toxic to B. stercoris B.PNR2 cells. Atrazine at 20 mg/kg of soil did not affect the shoot and root dry weight of rice cultivars RD6 and Leum Pua, as well as the waxy corn cultivar Muang Tam grown in atrazine-contaminated soil without receiving a bacterial inoculum. The application of B. stercoris B.PNR2 did not stimulate the germination and growth of any of the plants used in this study. The application of B. stercoris B.PNR2 decreased the shoot and root dry weight of waxy corn grown under atrazine-contaminated soil. Additionally, the chlorophyll b and total chlorophyll content in rice cultivar RD6, grown under atrazine-contaminated soil, decreased to only 162.6 ± 4.2 and 616.0 ± 55.8 μg/g fresh weight, which was related to the increase in proline content to 343.6 ± 41.6 μg/g fresh weight. In conclusion, it can be stated that soaking seeds with B. stercoris B.PNR2 was not an appropriate means of inoculation to stimulate the growth of plants in this study.

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Section: Chlorophyll Carotenoid and Proline Contentsmentioning

confidence: 98%

Potential of Bacillus stercoris B.PNR2 to stimulate growth of rice and waxy corn under atrazine-contaminated soil

Somtrakoon,

Prasertsom,

Sangdee

et al. 2024

jaa

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“…The total chlorophyll content in A. microphylla grown under different concentrations of atrazine did not significantly differ from each other (P>0.05). The reductions in the chlorophyll content are a sign of atrazine toxicity because the toxic effect of atrazine was to inhibit photosystem II in plants (Salem & El-Sobki, 2021;Yang & Zhang, 2020). If protein and photosynthetic pigment in the plant photosystem are destroyed, the ability to fix carbon and plant growth will decrease (Yang & Zhang, 2020).…”

Section: Growth Of Aquatic Plants Under Various Concentrations Of Atr...mentioning

confidence: 99%

Screening of Atrazine Tolerant Aquatic Plant and Roles of Plant Growth Regulators on Plant Growth and Atrazine Tolerance

Somtrakoon,

Chouychai

2024

JTAS

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The extensive use of atrazine to control weeds in agricultural areas has contaminated atrazine in surface water and groundwater. Atrazine contamination in water resources causes human health concerns. Thus, this study investigated the possible use of aquatic plants for removing atrazine from contaminated water. The experiment was performed under plant nursery conditions and divided into two parts: (1) the atrazine-tolerant plants were screened, and (2) the most atrazine-tolerant plant was used for atrazine phytoremediation stimulated by plant growth regulators. The results showed that atrazine was toxic to all aquatic plants, as the dry weight of the plants was significantly decreased when exposed to 20 mg/L of atrazine (P<0.05). Based on five aquatic plants grown under 2.5–20 mg/L atrazine-contaminated water, Azolla microphylla Kaulf. was the most tolerant aquatic plant and was more suitable for use in atrazine phytoremediation than the other aquatic plants (Ceratophyllum demersum L., Eichhornia crassipes (Mart.) Solms, Hydrilla verticillata (L. f.) Royle, and Salvinia cucullata Roxb. ex Bory). The total chlorophyll, carotenoid, and proline contents in the biomass of A. microphylla cultured in 2.5–20 mg/L of atrazine did not significantly differ between the atrazine concentrations (P>0.05). Meanwhile, the proline contents in the other four aquatic plants increased with increasing atrazine concentrations, and the chlorophyll content significantly decreased with an increase in the atrazine concentration. However, A. microphylla could not remove atrazine from contaminated water, and the application of plant growth regulators (6-benzyladenine, gibberellic acid, indole-3-butyric acid, and salicylic acid) did not improve the atrazine removal from water. Atrazine in the water was around 21–26 mg/L on day five of A. microphylla cultivation compared to the initial concentration (25 mg/L). Using a plant growth regulator was ineffective for stimulating growth and atrazine removal by A. microphylla. Future research should explore other potential mechanisms for enhancing atrazine removal by A. microphylla.

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Different Level of Tolerance to Herbicides is Displayed by Triticum aestivum L. Cultivars Depending on Herbicide Category and Mode of Application

Ariola,

Ramize,

Kathelina

2024

The EuroBiotech Journal

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Herbicides (HBs) are an integral part of modern agricultural practice globally as one of the most suitable methods for chemical weed control. Hence, they may inadvertently damage crops through similar mechanisms well-functioning at weeds. Tolerance to three categories of treatments (tribenuron-methyl, 2,4 D and their combination), and the impact of the mode of application (pre-treatment of seeds or spraying on plants) was assessed through morphometric analysis (total plant length, root length, stem length, lengths of the first three leaves, relative water content-RWC), and pigment content analysis for some wheat (Triticum aestivum L.) cultivars in use in Albania. Results speak of a cultivar specific tolerance to each HB category, discriminating “Dajti” as the most resistant cultivar, and suggesting that the stress imposed to plants by the combination of HBs can produce significant differences in pigment content. The mode of treatment, on the other side showed that glyphosate pre-treatment of seeds led to inhibition of germination, and plants germinated from seed pre-treatment with in 2,4-D displayed significant modification of plant morphology, and germination rate, and had limited impact on RWC. On contrary, few statistically significant changes in morphometric traits and pigments content were evidenced when plants were treated with 2,4-D or glyphosate after the germination. In conclusion, the combination of HBs produced significant changes in plant pigments content compared to the impact of each HB alone, and the pre-treatment of seeds lead either to inhibition or delayed germination. Based on the above we recommend avoiding these practices, and suggest further exploration of alternative HB combinations and modes of treatment before large scale applications.

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Physiological and Biochemical Parameters as An Index for Herbicides Damage in Wheat Plants

Cited by 4 publications

References 23 publications

Potential of Bacillus stercoris B.PNR2 to stimulate growth of rice and waxy corn under atrazine-contaminated soil

Potential of Bacillus stercoris B.PNR2 to stimulate growth of rice and waxy corn under atrazine-contaminated soil

Screening of Atrazine Tolerant Aquatic Plant and Roles of Plant Growth Regulators on Plant Growth and Atrazine Tolerance

Different Level of Tolerance to Herbicides is Displayed by Triticum aestivum L. Cultivars Depending on Herbicide Category and Mode of Application

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