Alternative oxidase pathway is likely involved in waterlogging tolerance of watermelon

Zheng, Jiawen; Ying, Quansheng; Fang, Chunying; Sun, Nan; Si, Menglu; Yang, Jiani; Bao-cheng, Zhu; Ruan, Yong‐Ling; Zhu, Zhujun; He, Yehua

doi:10.1016/j.scienta.2020.109831

Cited by 17 publications

(12 citation statements)

References 54 publications

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“…Waterlogging stress is an important abiotic factor constraining global agricultural production, with over 12% of the worldwide agricultural land being considerably affected by waterlogging stress (Zheng et al, 2021 ). Waterlogging is the condition when the water content of soil reaches or approaches saturation limits (Tian et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of different waterlogging periods on biochemistry, growth, and chlorophyll a fluorescence of Arachis hypogaea L.

et al. 2022

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Peanut is among the main oil crops in India with huge economic importance. The unpredictable rainy season during the growing time of peanuts causes waterlogging in peanut fields. Waterlogging triggers major environmental limitations that negatively affect the growth, physiology, and development of peanuts. Thus, the export and production of peanuts are severely affected by waterlogging. Therefore, the understanding of metabolic mechanisms under waterlogging is important to future water-stress tolerance breeding in peanuts. This study aimed to evaluate how peanuts responded to various waterlogging conditions in terms of their development, metabolic processes, and chlorophyll fluorescence characteristics. The evaluations were carried out at different stages of peanut variety DH-86 treated with waterlogging. The peanut plants were subjected to different waterlogging periods of 20, 40, 60, 80, and 100 days. The growth parameters including total dry mass, total leaf area, and total leaves number were calculated in all treatments. The phenomenological and specific energy fluxes and maximum photosystem II efficiency (FV/Fm) were also determined. The measurements were done statistically using PCA, G-Means clustering, and correlation analysis to explore the interaction between different physiological parameters. The waterlogging for 100 days caused a significant reduction in the total number of leaves, dry mass, and total leaf area. The most sensitive parameters are specific and phenomenological energy fluxes and Fv/Fm, which notably decreased as waterlogging duration increased. The results indicated the growth and physiological performance of the peanut cv. DH-86 was affected significantly due to waterlogging and the interaction between all these parameters in waterlogging. This research focused on how peanuts respond to waterlogging stress and provides the basis for future plant breeding efforts to improve peanut waterlogging tolerance, especially in rainy regions. This will improve the sustainability of the entire peanut industry.

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Section: Introductionmentioning

confidence: 99%

Effect of different waterlogging periods on biochemistry, growth, and chlorophyll a fluorescence of Arachis hypogaea L.

et al. 2022

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“…Watermelon, due to the peculiarities of the root system, has a high drought resistance. It is able to productively use water and nutrients at high air temperatures and low soil moisture, forming a full-fledged yield with good product quality [18,19,20]. But the growth and development of plants largely depends on the climatic factors of the fruiting period, the main of which are the amount and timing of rainfalls, air temperature (table 1), that can reduce the effectiveness of the methods used for growing commercial products.…”

Section: Resultsmentioning

confidence: 99%

Ecological safety and effectiveness of the growth regulator Vigor Forte and Agrovin fertilizers in the technology of growing of watermelon

Колебошина

Егорова

Ryabchikova

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Modern agricultural technologies require new approaches allowing to increase yields and produce fruits with high properties. The aim of the research was to assess the effect of foliar processing of watermelon plants with growth regulator Vigor Forte in various doses and combinations with liquid fertilizers on growth, development, yield and biochemical traits of fruits. The research was carried out in 2018-2020 on Bykovskaya Melon Breeding Experimental Station - a branch of the FSBSI “Federal Scientific Centre for Vegetable Growing” (Volgograd region). The treatment of plants was carried out twice, the first one was at the beginning of branch forming, the second one was after 10-12 days. The following rates of fertilizers were used: Vigor Forte - 25 g/ha and 50 g/ha; Agrovin Universal, Agrovin Profi, and NPK complex - 500 g/ha. Consumption of working solution was 200 l/ha. The object of research was an early cultivar of watermelon Triumph. Untreated plants were accepted for control. Treatment of watermelon plants with Vigor Forte combined with Agrovin Universal or Agrovin Pro fertilizers increased yield by 36.7 - 77.9%. There were no significant changes in the biochemical traits of the fruits. The amount of nitrates did not exceed the MPC (60 mg/kg).

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“…Responding to water stress by reducing the level of root respiration can help a plant to reduce the metabolic rate associated with soil exploration by the root system and improve its capacity for nutrient and water absorption, thus increasing crop yield [ 54 , 56 ]. Several studies have provided evidence that AOX, in addition to playing a general role in maintaining cellular energy homeostasis, may be involved in processes that limit the formation of mitochondrial ROS in tobacco, watermelon, and alfalfa plants exposed to environmental stress [ 36 , 64 , 65 ], suggesting that it might play an essential role in stress responses [ 66 ]. When faced with insufficient P availability, tobacco roots have been shown to respond by increasing their AOX respiration rate, thereby increasing its proportion to the total respiration rate [ 67 ].…”

Section: Discussionmentioning

confidence: 99%

Maize (Zea mays L.) responses to salt stress in terms of root anatomy, respiration and antioxidative enzyme activity

Dong

et al. 2022

BMC Plant Biol

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Background Soil salt stress is a problem in the world, which turns into one of the main limiting factors hindering maize production. Salinity significantly affects root physiological processes in maize plants. There are few studies, however, that analyses the response of maize to salt stress in terms of the development of root anatomy and respiration. Results We found that the leaf relative water content, photosynthetic characteristics, and catalase activity exhibited a significantly decrease of salt stress treatments. However, salt stress treatments caused the superoxide dismutase activity, peroxidase activity, malondialdehyde content, Na+ uptake and translocation rate to be higher than that of control treatments. The detrimental effect of salt stress on YY7 variety was more pronounced than that of JNY658. Under salt stress, the number of root cortical aerenchyma in salt-tolerant JNY658 plants was significantly higher than that of control, as well as a larger cortical cell size and a lower root cortical cell file number, all of which help to maintain higher biomass. The total respiration rate of two varieties exposed to salt stress was lower than that of control treatment, while the alternate oxidative respiration rate was higher, and the root response of JNY658 plants was significant. Under salt stress, the roots net Na+ and K+ efflux rates of two varieties were higher than those of the control treatment, where the strength of net Na+ efflux rate from the roots of JNY658 plants and the net K+ efflux rate from roots of YY7 plants was remarkable. The increase in efflux rates reduced the Na+ toxicity of the root and helped to maintain its ion balance. Conclusion These results demonstrated that salt-tolerant maize varieties incur a relatively low metabolic cost required to establish a higher root cortical aerenchyma, larger cortical cell size and lower root cortical cell file number, significantly reduced the total respiration rate, and that it also increased the alternate oxidative respiration rate, thereby counteracting the detrimental effect of oxidative damage on root respiration of root growth. In addition, Na+ uptake on the root surface decreased, the translocation of Na+ to the rest of the plant was constrained and the level of Na+ accumulation in leaves significantly reduced under salt stress, thus preempting salt-stress induced impediments to the formation of shoot biomass.

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Alternative oxidase pathway is likely involved in waterlogging tolerance of watermelon

Cited by 17 publications

References 54 publications

Effect of different waterlogging periods on biochemistry, growth, and chlorophyll a fluorescence of Arachis hypogaea L.

Effect of different waterlogging periods on biochemistry, growth, and chlorophyll a fluorescence of Arachis hypogaea L.

Ecological safety and effectiveness of the growth regulator Vigor Forte and Agrovin fertilizers in the technology of growing of watermelon

Maize (Zea mays L.) responses to salt stress in terms of root anatomy, respiration and antioxidative enzyme activity

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