The Role of Uniconazole in Improving Physiological and Biochemical Attributes of Bean (Phaseolus vulgaris L.) Subjected to Drought Stress

Keshavarz, Hamed; Khodabin, Ghorban

doi:10.1007/s12892-019-0050-0

Cited by 39 publications

(21 citation statements)

References 35 publications

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“…1 e). Uniconazole application under drought stress can increase the levels of compounds involved in osmoregulation, lessen lipid peroxidation 16 , and protect cell integrity. These positive effects can improve absorption of light energy and thereby enhance photosynthesis capacity.…”

Section: Discussionmentioning

confidence: 99%

“…Uniconazole, as one of the most efficient plant growth regulators, alters different parameters involved in the growth and development of plants under environmental stress 13 . Uniconazole applied exogenously under stress increases resistance to freezing injury 14 , water deficit stress 15 , drought stress 16 , waterlogging-induced damage 17 , and salt stress 18 . Previous studies 14 – 18 revealed that uniconazole improved net photosynthesis and transpiration rate, suggesting an increase in leaf water potential and chlorophyll (Chl) content.…”

Section: Introductionmentioning

confidence: 99%

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Physiological and transcriptome analyses for assessing the effects of exogenous uniconazole on drought tolerance in hemp (Cannabis sativa L.)

Jiang

Sun

Zheng

et al. 2021

Sci Rep

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Uniconazole (S-(+)-uniconazole), a plant growth retardant, exerts key roles in modulating growth and development and increasing abiotic stress tolerance in plants. However, the underlying mechanisms by which uniconazole regulates drought response remain largely unknown. Here, the effects of exogenous uniconazole on drought tolerance in hemp were studied via physiological and transcriptome analyses of the drought-sensitive industrial hemp cultivar Hanma No. 2 grown under drought stress. Exogenous uniconazole treatment increased hemp tolerance to drought-induced damage by enhancing chlorophyll content and photosynthesis capacity, regulating activities of enzymes involved in carbon and nitrogen metabolism, and altering endogenous hormone levels. Expression of genes associated with porphyrin and chlorophyll metabolism, photosynthesis-antenna proteins, photosynthesis, starch and sucrose metabolism, nitrogen metabolism, and plant hormone signal transduction were significantly regulated by uniconazole compared with that by control (distilled water) under drought stress. Numerous genes were differentially expressed to increase chlorophyll content, enhance photosynthesis, regulate carbon–nitrogen metabolism-related enzyme activities, and alter endogenous hormone levels. Thus, uniconazole regulated physiological and molecular characteristics of photosynthesis, carbon–nitrogen metabolism, and plant hormone signal transduction to enhance drought resistance in industrial hemp.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Physiological and transcriptome analyses for assessing the effects of exogenous uniconazole on drought tolerance in hemp (Cannabis sativa L.)

Jiang

Sun

Zheng

et al. 2021

Sci Rep

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“…The amounts of antioxidant enzymes produced in NIMA were higher than the Ks7 cultivar. Keshavarz and Khodabin reported that high levels of enzymes in plants indicate increased tolerance to drought stress. Seyed Ebrahimi et al .…”

Section: Resultsmentioning

confidence: 99%

“…The amounts of antioxidant enzymes produced in NIMA were higher than the Ks7 cultivar. Keshavarz and Khodabin [41] reported that high levels of enzymes in plants indicate increased tolerance to drought stress. Seyed Ebrahimi et al [42] stated that the activity of superoxide dismutase and peroxidase enzymes in drought resistant cultivars was higher than susceptible cultivars.…”

Section: Effect Of Drought Stress On Production Of Proline Catalasementioning

confidence: 99%

Effect of Drought Stress on Certain Morphological and Physiological Characteristics of a Resistant and a Sensitive Canola Cultivar

Khodabin

Tahmasebi‐Sarvestani

Rad

et al. 2020

Chemistry & Biodiversity

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Water stress is one of the main abiotic factors that reduces plant growth, mainly due to high evaporative demand and low water availability. In order to evaluate the effects of drought stress on certain morphological and physiological characteristics of two canola cultivars, we conducted a factorial experiment based on a completely randomized design. The findings show that drought stress exacerbations result in the plant's response to stress due to increased canola resistance caused by changes in plant pigments, proline, catalase, ascorbate peroxidase, peroxidase, superoxide dismutase and malondialdehyde, glucose, galactose, rhamnose and xylose. These in turn ultimately influence the morphological characteristics of canola. Drought stress reduces the concentration of carotenoids, chlorophyll a, chlorophyll b, total chlorophylls; however, glucose, galactose, rhamnose, xylose, proline, catalase, ascorbate peroxidase, peroxidase, superoxide dismutase, malondialdehyde (in leaves and roots) and the chlorophyll a and b ratios were increased. Reduction of plant height, stem height, root length, fresh and dry weight of canola treated with 300 g/l PEG compared to non‐treatment were 0.264, 0.236, 0.394, 0.183 and 0.395, respectively. From the two canola cultivars, the morphological characteristics of the NIMA increased compared to the Ks7 cultivar. Interaction effects of cultivar and drought stress showed that NIMA cultivar without treatment had the highest number of morphological characteristics such as carotenoid concentration, chlorophyll a, chlorophyll b, total chlorophylls a and b, whereas the cultivar with 300 g/l PEG (drought stress) had the highest amount of proline, malondialdehyde, soluble sugars and enzymes in leaves and roots. Increasing activity of oxidative enzymes and soluble sugars in canola under drought stress could be a sign of their relative tolerance to drought stress.

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“…system, leading to a lower dry matter weight (Keshavarz & Khodabin, 2019). A reduction in LAI is also an important factor when drought stress was subjected over the growing period, reducing biological yield because of lower photosynthetic rates (Yang, Zhao, Chang, Li, & Li, 2015).…”

Section: Discussionmentioning

confidence: 99%

Is there any relationship between agronomic traits, soil properties and essential oil profile of peppermint (Mentha piperita L.) treated by fertiliser treatments and irrigation regimes?

Keshavarz

Tohidi-Moghadam

Hosseini

2021

Annals of Applied Biology

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One of the greatest challenges in recent years is providing enough food to feed the increasing world population, with limited freshwater resources. However, effective fertiliser management also has a fundamental role to improve yield quality and quantity. Organic fertiliser not only supplements nutrients but also improves physicochemical and biological soil properties. A 2-year field experiment was conducted to examine the influence of urea and vermicompost fertiliser on oil phytochemical properties of peppermint pH, soil cation exchange capacity (CEC) and organic carbon of experimental site under three irrigation regimes in 2018 and 2019. The experiments had three water deficit regimes (no stress, moderate, and severe drought stress) as a main plot. The subplot division consisted of six fertiliser treatments: unfertilised (control); 140 kg urea ha À1 ; 105 kg urea ha À1 + 3.3 ton vermicompost ha À1 ; 70 kg urea ha À1 + 6.6 ton vermicompost ha À1 ; 35 kg urea ha À1 + 10 ton vermicompost ha À1 ; and 13.5 ton vermicompost ha À1 . The maximum leaf area index (4.29) and dry matter weight (3,803 kg ha À1 ) were observed in control irrigation, while the highest essential oil content (0.97%) could be seen under mild water deficit stress. Additionally, the highest organic carbon and CEC were obtained under well-watered conditions at 1.20% and 6.41 (meq 100 g soil À1 ), respectively. Dry matter weight and essential oil content increased considerably in response to increasing vermicompost in fertiliser treatments, and the highest content of these traits were observed in 2019 and with 13.5 ton vermicompost ha À1 . The menthol content increases in response to deficit irrigation and integrated fertiliser. These data indicate that mild drought stress can increase the synthesis of medical compounds and vermicomposting can alleviate the impact of drought by conserving soil moisture as an acclimation mechanism to improve nutrient uptake and avoid yield losses.

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The Role of Uniconazole in Improving Physiological and Biochemical Attributes of Bean (Phaseolus vulgaris L.) Subjected to Drought Stress

Cited by 39 publications

References 35 publications

Physiological and transcriptome analyses for assessing the effects of exogenous uniconazole on drought tolerance in hemp (Cannabis sativa L.)

Physiological and transcriptome analyses for assessing the effects of exogenous uniconazole on drought tolerance in hemp (Cannabis sativa L.)

Effect of Drought Stress on Certain Morphological and Physiological Characteristics of a Resistant and a Sensitive Canola Cultivar

Is there any relationship between agronomic traits, soil properties and essential oil profile of peppermint (Mentha piperita L.) treated by fertiliser treatments and irrigation regimes?

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