Prohexadione-calcium alleviates saline-alkali stress in soybean seedlings by improving the photosynthesis and up-regulating antioxidant defense

Feng, Naijie; Yu, Mingliang; Yao, Li; Jin, Duo; Zheng, Dianfeng

doi:10.1016/j.ecoenv.2021.112369

Cited by 58 publications

(48 citation statements)

References 35 publications

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“…Chlorophyll is essential for photosynthesis. Saline-alkali stress damages the chlorophyll metabolism and photosynthesis in plant (Hu et al, 2016;Feng et al, 2021). In the present study, salinity-alkalinity stress could significantly inhibit the chlorophyll content and photosynthesis rate in apple Effects of GR24 treatment on root activity (A), triphenyltetrazolium chloride (TTC) reductive intensity of apple roots (B), citric acid content of apple leaves (C), and malic acid content of apple leaves (D) under salinity-alkalinity stress.…”

Section: Discussionmentioning

confidence: 73%

Strigolactone alleviates the salinity-alkalinity stress of Malus hupehensis seedlings

Bian

Liu

et al. 2022

Front. Plant Sci.

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Salinity-alkalinity stress can remarkably affect the growth and yield of apple. Strigolactone (SL) is a class of carotenoid-derived compounds that functions in stress tolerance. However, the effects and mechanism of exogenous SL on the salinity-alkalinity tolerance of apple seedlings remain unclear. Here, we assessed the effect of SL on the salinity-alkalinity stress response of Malus hupehensis seedlings. Results showed that treatment with 100 μM exogenous SL analog (GR24) could effectively alleviate salinity-alkalinity stress with higher chlorophyll content and photosynthetic rate than the apple seedlings without GR24 treatment. The mechanism was also explored: First, exogenous GR24 regulated the expression of Na+/K+ transporter genes and decreased the ratio of Na+/K+ in the cytoplasm to maintain ion homeostasis. Second, exogenous GR24 increased the enzyme activities of superoxide, peroxidase and catalase, thereby eliminating reactive oxygen species production. Third, exogenous GR24 alleviated the high pH stress by regulating the expression of H+-ATPase genes and inducing the production of organic acid. Last, exogenous GR24 application increased endogenous acetic acid, abscisic acid, zeatin riboside, and GA3 contents for co-responding to salinity-alkalinity stress indirectly. This study will provide important theoretical basis for analyzing the mechanism of exogenous GR24 in improving salinity-alkalinity tolerance of apple.

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Section: Discussionmentioning

confidence: 73%

Strigolactone alleviates the salinity-alkalinity stress of Malus hupehensis seedlings

Bian

Liu

et al. 2022

Front. Plant Sci.

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“…4-7). Feng et al 25 reported spraying Pro-Ca on soybean signi cantly increased the chlorophyll content of leaves, increased the Pn, and maintained the photosynthetic process under saline-alkali stress. Exogenous spraying of Pro-Ca could enhance the photosynthetic activity of rice mesophyll cells and the adaptability under salt stress at the tillering stage, which indicated that Pro-Ca could maintain the photosynthetic activity of rice leaves at the tillering stage under NaCl stress and enhance the stress resistance of rice at the tillering stage.…”

Section: Discussionmentioning

confidence: 99%

“…9 and 10), which suggested that Pro-Ca can enhance the activities of related antioxidant enzymes in rice leaves, reduce oxidative damage, and improve the salt tolerance of rice at the tillering stage. Feng et al 25 found that the application of exogenous Pro-Ca signi cantly increased the activities of antioxidant enzymes (SOD, CAT, and POD) in soybean seedlings under saline-alkali stress. An earlier study also suggested that Pro-Ca can increase SOD, CAT, and POD enzyme activities by stimulating the antioxidative defense system in cucumber plants 53 .…”

Section: Discussionmentioning

confidence: 99%

“…Nakayama et al 24 found that Pro-Ca can shorten the height of rice stalks, and increase the chlorophyll content, thus increasing the photosynthetic rate of plants and promoting crop growth. Studies have witnessed that spraying Pro-Ca has remarkable effects on soybean, tomato, and sweet potato [25][26][27] . Pro-Ca can also increase the number of grains per ear, with no residue, no pollution, and a broad application prospec 24 .…”

Section: Introductionmentioning

confidence: 99%

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Effect of NaCl stress on tillering of rice (Oryza sativa L.) and mitigation regulation of prohexadione-calcium

Zhang

Zheng

Feng

et al. 2022

Preprint

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Salt stress inhibits crop quality and yields, and growth regulators are used to enhance salt tolerance of crops. Here, we report the effect of prohexadione-calcium (Pro-Ca) on rice tillering under salt stress. The results showed the malondialdehyde (MDA) levels and electrolyte leakage in leaves were increased as well as the expression of the antioxidant enzymes was induced under salt stress. Foliar application of Pro-Ca reduced seedling height, increased the stem base width, improved the lodging resistance of rice, decreased MDA content and electrolyte leakage, and alleviated the membrane damage of rice under salt stress. Exogenous Pro-Ca also increased the net photosynthetic rate (Pn) and the stomatal conductance (Gs) of rice, decreased the intercellular CO2 concentration (Ci), and increased the activities of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) of rice at the tillering stage under salt stress. In conclusion, Pro-Ca improved the salt tolerance of rice at the tillering stage by enhancing the lodging resistance of rice, alleviating cell membrane damage of leaves caused by NaCl stress, and enhancing photosynthesis and antioxidant capacity. Effect of Pro-Ca on rice at the tillering stage under 0.3% NaCl stress was discussed, which provided a theoretical basis for revealing physiological changes at the rice tillering stage.

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“…In China, saline soils cover a vast area of the total arable land and coastal alluvial regions. Simultaneously, saline soils also experience alkalization, which is even more toxic to plants than single salinization ( Feng et al, 2021 ). For instance, the Yellow River Estuary (YRE) (Shandong Province, China) is a densely populated saline-alkaline mudflat area with diversified cultures and economic activities.…”

Section: Introductionmentioning

confidence: 99%

Integrative Transcriptome and Metabolome Profiles Reveal Common and Unique Pathways Involved in Seed Initial Imbibition Under Artificial and Natural Salt Stresses During Germination of Halophyte Quinoa

et al. 2022

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Salt stress is a major environmental factor that seriously restricts quinoa seed germination. However, the key regulatory mechanisms underlying the effect of salt stress on the initial imbibition stage of quinoa seeds are unclear. In this study, dry seeds (0 h) and imbibed (8 h) seeds with 450 mM NaCl (artificial salt) and 100% brackish water of Yellow River Estuary (BW, natural salt) were used to assess the key salt responses based on germination, transcriptome, and metabolome analyses. The results indicated that the capacity of germinating seeds to withstand these two salt stresses was similar due to the similarities in the germination percentage, germination index, mean germination time, and germination phenotypes. Combined omics analyses revealed that the common and unique pathways were induced by NaCl and BW. Starch and sucrose metabolism were the only commonly enriched pathways in which the genes were significantly changed. Additionally, amino sugar and nucleotide sugar metabolism, and ascorbate and aldarate metabolism were preferably enriched in the NaCl group. However, glutathione metabolism tended to enrich in the BW group where glutathione peroxidase, peroxiredoxin 6, and glutathione S-transferase were significantly regulated. These findings suggest that the candidates involved in carbohydrate metabolism and antioxidant defense can regulate the salt responses of seed initial imbibition, which provide valuable insights into the molecular mechanisms underlying the effect of artificial and natural salt stresses.

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Prohexadione-calcium alleviates saline-alkali stress in soybean seedlings by improving the photosynthesis and up-regulating antioxidant defense

Cited by 58 publications

References 35 publications

Strigolactone alleviates the salinity-alkalinity stress of Malus hupehensis seedlings

Strigolactone alleviates the salinity-alkalinity stress of Malus hupehensis seedlings

Effect of NaCl stress on tillering of rice (Oryza sativa L.) and mitigation regulation of prohexadione-calcium

Integrative Transcriptome and Metabolome Profiles Reveal Common and Unique Pathways Involved in Seed Initial Imbibition Under Artificial and Natural Salt Stresses During Germination of Halophyte Quinoa

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