Soybean plant osmotic and oxidative stress as affected by herbicide and salinity levels in soil

Benedetti, Lariza; Scherner, Ananda; Cuchiara, Cristina Copstein; Moraes, Ítalo Lucas de; Avila, Luis Antônio de; Deuner, Sidnei

doi:10.1590/s0100-83582020380100051

Cited by 7 publications

(5 citation statements)

References 28 publications

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“…One of the obvious effects of salt stress in soybean is the reduction of osmotic potential. A dose-dependent decline of osmotic potential was observed in soybean plants upon 28-d exposure to salt (60 and 120 mM NaCl), with more negative values in the treatment with 120 mM NaCl [71].…”

Section: Water Relationmentioning

confidence: 93%

Salt Stress Responses and Tolerance in Soybean

Hasanuzzaman¹,

Parvin²,

Anee³

et al. 2022

Physiology

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Soybean is one of the major oil crops with multiple uses which is gaining popularity worldwide. Apart from the edible oil, this crop provides various food materials for humans as well as feeds and fodder for animals. Although soybean is suitable for a wide range of soils and climates, it is sensitive to different abiotic stress such as salinity, drought, metal/metalloid toxicity, and extreme temperatures. Among them, soil salinity is one of the major threats to soybean production and the higher yield of soybean is often limited by salt stress. Salt stress negatively affects soybean seedling establishment, growth, physiology, metabolism, and the ultimate yield and quality of crops. At cellular level, salt stress results in the excess generation of reactive oxygen species and creates oxidative stress. However, these responses are greatly varied among the genotypes. Therefore, finding the precise plant responses and appropriate adaptive features is very important to develop salt tolerant soybean varieties. In this connection, researchers have reported many physiological, molecular, and agronomic approaches in enhancing salt tolerance in soybean. However, these endeavors are still in the primary stage and need to be fine-tuned. In this chapter, we summarized the recent reports on the soybean responses to salt stress and the different mechanisms to confer stress tolerance.

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Section: Water Relationmentioning

confidence: 93%

Salt Stress Responses and Tolerance in Soybean

Hasanuzzaman¹,

Parvin²,

Anee³

et al. 2022

Physiology

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“…It alters the enzymatic activates during germination process [6]. It not only delays the germination but also affects the vegetative and propagative growth of the plant by creating osmotic and oxidative stresses as well as deficiency and toxicity in them [17].…”

Section: Introductionmentioning

confidence: 99%

Influence of Salinity with Different Cl-:SO42- Ratios on Wheat (Triticum aestivum L.) Growth

Asad

Zuhra

Murtaza

et al. 2022

IJPSS

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A major threat for sustainable agriculture is the continuous increase in salt-affected area. Salt stress causes the land degradation, ecological imbalance, Environmental pollution and reduce the crop production. It changes different physical and chemical processes taking place in plant body such as seed germination and uptake of different nutrients and water. Wheat is the main cereal crop and primary diet for one third population of the humans. It can tolerate the salinity effect to some extent but at higher level of salinity, its production reduces significantly. Salt-affected soils have relatively more number of salts which are easily solubilize in water and exchangeable sodium as compared to the normal soil. These salts are ionized and produce different types of cations (Mg2+, Ca2+ and Na+) and anions (Cl-, CO32-, SO42-, and HCO3-). Sulphate salinity is also toxic for plant growth as chloride salinity. The objective of this research is to assess the effect of salinity with various Cl-:SO42- ratios on wheat growth. A pot trial was conducted on wheat by creating salinity with different levels of chloride and sulphate (4:1, 3:1, 2:1, 1:1, 1:2, 1:3 and 1:4). Experimental design was complete randomized design (CRD). Different physiochemical parameters of soil before and after harvesting of the crop and also growth parameters were determined. Data was analysed using statistical software. On the basis of these results, it was determined that both types of salinity reduced the wheat growth significantly, but chloride type salinity has more injurious effect than sulphate salinity. It was concluded that chloride ion has more toxic effect than sulphate ion for wheat growth and development.

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“…It is imperative to understand the effects of herbicide stress on morphological, physiological, and biochemical processes in plants [45]. Photosynthesis inhibitor herbicides such as bentazone and atrazine typically alter chloroplast ultrastructure, pigment ratios, and chlorophyll-related protein levels in the photosynthetic apparatus [46].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Hyperspectral Imagery and Physiological Characteristics of Bentazone-Tolerant and -Susceptible Soybean Cultivars

Ali

Choi

et al. 2022

Agronomy

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Bentazone is a broadleaf post-emergence herbicide widely used for crop production that inhibits photosynthetic activity, resulting in phytotoxicity and injury in plants. Evaluating and identifying herbicide-tolerant genotypes is a critical step in plant breeding programs. In this study, we determined the reaction of 138 Korean soybean cultivars to bentazone using visual evaluation, and selected cultivars were further evaluated to determine the effects of bentazone on physiological parameters. For physiological parameters, we measured the normalized difference vegetation index (NDVI) from hyperspectral reflectance images. From 2 to 4 DAT, the NDVI for two sensitive cultivars was between 0.60 and 0.69, while the NDVI for tolerant cultivars was between 0.70 and 0.86. Photosynthesis rate (A), transpiration (E), stomatal conductance (gsw), and total conductance of CO2 (gtc) were measured using chlorophyll fluorescence. Visual score evaluation showed that moderate bentazone-tolerant cultivars were predominant among the Korean cultivars. For physiological measurements, differences in NDVI were detected between bentazone-tolerant and -sensitive cultivars 2 days after treatment (DAT). However, the A, E, gsw, and gtc levels dramatically decreased 1 DAT in the sensitive cultivars. This study provides insights into the tolerance and sensitivity of soybeans to bentazone.

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Soybean plant osmotic and oxidative stress as affected by herbicide and salinity levels in soil

Cited by 7 publications

References 28 publications

Salt Stress Responses and Tolerance in Soybean

Salt Stress Responses and Tolerance in Soybean

Influence of Salinity with Different Cl-:SO42- Ratios on Wheat (Triticum aestivum L.) Growth

Comparison of Hyperspectral Imagery and Physiological Characteristics of Bentazone-Tolerant and -Susceptible Soybean Cultivars

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