Effects of supplemental nitrogen application on physiological characteristics, dry matter and nitrogen accumulation of winter rapeseed (Brassica napus L.) under waterlogging stress

Men, Shuang; Chen, Hong‐Lin; Chen, Shanghong; Zheng, Sheng-Hua; Shen, Xizhong; Wang, Changtao; Yang, Zepeng; Liu, Dinghui

doi:10.1038/s41598-020-67260-7

Cited by 45 publications

(33 citation statements)

References 34 publications

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“…Hence, the total nitrogen levels in the plant tissues were enhanced; ultimately, more photoassimilates were available towards the reproductive parts (pods). Our results are in agreement with the previously published studies (Bell et al, 2004;Dordas & Sioulas, 2008;Hokmalipour & Darbandi, 2011;Men et al, 2020). It was depicted that the high rate of nitrogen application had increased the leaf and pod wall chlorophyll content (Men et al, 2020;Ni et al, 2019;Singh et al, 2017).…”

Section: Chlorophyll Contentsupporting

confidence: 94%

“…Our results are in agreement with the previously published studies (Bell et al, 2004;Dordas & Sioulas, 2008;Hokmalipour & Darbandi, 2011;Men et al, 2020). It was depicted that the high rate of nitrogen application had increased the leaf and pod wall chlorophyll content (Men et al, 2020;Ni et al, 2019;Singh et al, 2017). During the flowering period, high chlorophyll content improved the photosynthetic efficiency of plants (Liu et al, 2017), which increased the number of pods with more seed weight (Khan, Zhou et al, 2018b).…”

Section: Chlorophyll Contentsupporting

confidence: 93%

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Carbohydrates accumulation, oil quality and yield of rapeseed genotypes at different nitrogen rates

Ghafoor

Karim

Asghar

et al. 2021

Plant Production Science

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A field experiment was conducted in 2018-2020 to investigate the effect of two nitrogen application rates (N 0 = 0 kg ha −1 (control), N 90 = 90 kg ha −1 , and N 180 = 180 kg ha −1 ) on morphological and physiological behaviours of two new rapeseed varieties; V 1 = JYJS01 (semi-dwarf variety) and V 2 = CY36 (tall variety). Our results indicated that N application enhanced the plant growth and seed protein content in comparison to control. Contrastingly, compared with control, sugar contents, i.e. sucrose and reducing sugars, decreased significantly in response to an increase in N. Seed oil content also decreased by 8.5% and 5.5%, 6.7% and 3.9% against N 180 in V 1 and V 2 during 2019 and 2020, respectively. Furthermore, higher nitrogen application rates decreased seed fatty acid proportions by decreasing the sugar availability for fatty acid biosynthesis. Our results demonstrated the highest seed yield (9.4 g plant −1 in 2018/19 and 9.5 g plant −1 in 2019/20) in V 2 against N 180 , and the lowest seed yield (3.2 g plant −1 in 2018/19 and 3.4 g plant −1 in 2019/20) in V 1 at control. These findings imply that a high nitrogen application rate had increased the yield. At the same time, the carbohydrates translocation from stems to seed for fatty acid biosynthesis decreased, which played their significant role in seed physiology for fatty acid metabolisms, ultimately affected the seed quality. However, there is still a dire need to evaluate how nitrogen application affect the carbohydrate availability for fatty acid metabolism in the seed of new winter rapeseed varieties.

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Section: Chlorophyll Contentsupporting

confidence: 94%

Section: Chlorophyll Contentsupporting

confidence: 93%

Carbohydrates accumulation, oil quality and yield of rapeseed genotypes at different nitrogen rates

Ghafoor

Karim

Asghar

et al. 2021

Plant Production Science

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“…The compromised plasma membrane integrity due to lipid peroxidation may have caused leakage of the enzyme resulting in the reduced activity of the enzymes. Also, in this study, the increase in the MDA level was due to oxidative stress occasioned by the long use of the extract 36 . Enzymatic cellular antioxidants that defend against oxidative stress are SOD and catalase.…”

Section: Discussionsupporting

confidence: 47%

Comparative Modulatory Assessment of the Sperm Quality and Testicular Function by Solvent Fractions of the Cannabis Extract in Rats

O¹,

Oluwafemi²,

E³

et al. 2021

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Background:The bioactive ingredients present in medicinal plants have various pharmacological activities which have explored for therapeutic and management of disease conditions like infertility. Objective: This study evaluated the comparative modulations on semen quality and testicular function in the rat by solvents soluble portions of ethanolic leaf extract in varying polar solvents. Methods: Thirty Wistar rats were randomly placed into five groups (A, B, C, D, E and F) with five rats per group: A, control: 0.2 ml 2 % DMSO was administered, B (vitamin C): 90 mg/kg body weight, 4.4 mg/kg body weight of n-hexane, 3.65 mg/kg body weight of ethyl acetate, 0.52 mg/kg body weight of n-butanol and 0.18 mg/kg body weight of the residual portion of Cannabis leaf extract were given to groups C, D, E and F, respectively. The rats were sacrificed 24 hours after the last day of 60 days of treatment. Results: Sperm indices, testosterone, FSH, LH, and HDL showed significant increase (p ≤ 0.05) across the treatment groups compared to normal control. Similarly, there was a significant increase in activity (p ≤ 0.05) of ALP, ACP, SOD, and CAT across the treatment groups compared to normal control. In addition, there were significant increases in GSH, MDA, triglyceride, cholesterol, total protein concentration levels across the treatment groups compared to normal control. The n-butanol soluble portion showed normal histomorphology with typical seminiferous tubule with spermatogonia lying on the basement membrane. Conclusion: Testicular integrity and improved sperm quality were pronounced in rats administered n-butanol solvent portion.

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“…Waterlogging stress adversely affects the growth of many terrestrial crops, causing chlorosis and necrosis in their leaves, inhibiting shoot and root growth, and decreasing dry matter accumulation (Komatsu et al, 2013;Wang et al, 2017;Kaya et al, 2019;Men et al, 2020). The inhibitory effects of waterlogging stress on plant growth and development are likely due to hypoxic conditions in the root zone that hamper root respiration, resulting in limited nutrient uptake and transport (Tan et al, 2010;Qi et al, 2016;Wang et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Exogenous 6-Benzyladenine Improves Waterlogging Tolerance in Maize Seedlings by Mitigating Oxidative Stress and Upregulating the Ascorbate-Glutathione Cycle

Wang

Zhu

2021

Front. Plant Sci.

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The synthetic cytokinin 6-benzyladenine (6-BA) regulates plant growth and prevents the negative consequences of various forms of abiotic stress, including waterlogging in crop plants. The present study aimed to investigate the effects of exogenous 6-BA on the growth, oxidative stress, and ascorbate-glutathione (AsA-GSH) cycle system in the inbred SY-MY13 (waterlogging-resistant) and SY-XT1 (waterlogging-sensitive) seedlings of waxy corn in conditions of waterlogging stress. The results demonstrated that waterlogging stress causes chlorosis and necrosis in waxy corn leaves, inhibiting growth and leading to the accumulation of reactive oxygen species (ROS), which induces oxidative stress and, in turn, reduces membrane lipid peroxidation and the disruption of membrane homeostasis. This is specifically manifested in the increased concentrations of superoxide anion radicals (O2-), hydrogen peroxide (H2O2), and malondialdehyde (MDA), in addition to increased relative electrical conductivity (REC%) values. The SY-MY13 strain exhibited growth superior to that of SY-XT1 when waterlogged due to its excellent waterlogging resistance. Thus, exogenous 6-BA was found to be effective in enhancing the growth of plants stressed by waterlogging in terms of the weight of the shoots and roots, shoot height, and leaf area. In addition to this, exogenous 6-BA also reduced the accumulation of O2-, H2O2, and MDA, increased ascorbate peroxidase (APX), glutathione reductase (GR), dehydroascorbate reductase (DHAR), and monodehydroascorbate reductase (MDHAR) activity, and enhanced ascorbic acid (AsA), and reduced glutathione (GSH) concentration through the regulation of the efficiency of the AsA-GSH cycle system in maize plants. Hence, the application of exogenous 6-BA can alleviate waterlogging-induced damage and improve waterlogging tolerance in waxy corn via the activation of the AsA-GSH cycle system and the elimination of ROS.

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Effects of supplemental nitrogen application on physiological characteristics, dry matter and nitrogen accumulation of winter rapeseed (Brassica napus L.) under waterlogging stress

Cited by 45 publications

References 34 publications

Carbohydrates accumulation, oil quality and yield of rapeseed genotypes at different nitrogen rates

Carbohydrates accumulation, oil quality and yield of rapeseed genotypes at different nitrogen rates

Comparative Modulatory Assessment of the Sperm Quality and Testicular Function by Solvent Fractions of the Cannabis Extract in Rats

Exogenous 6-Benzyladenine Improves Waterlogging Tolerance in Maize Seedlings by Mitigating Oxidative Stress and Upregulating the Ascorbate-Glutathione Cycle

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