Seed priming improved salt-stressed sorghum growth by enhancing antioxidative defense

Guo, Xiaoqian; Zhi, Wenfang; Feng, Yuntong; Zhou, Guisheng; Zhu, Guanglong

doi:10.1371/journal.pone.0263036

Cited by 20 publications

(13 citation statements)

References 34 publications

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“…The latter remained higher than control, even after stress had been discontinued, while the former returned to the untreated control level. These results were also recorded for sorghum [56,68], melon [69] and wheat [57], confirming the retention of high levels of osmoprotectants as a mechanism and explaining the role of salt priming in the enhancement of the subsequent tolerance to salt stress [67]. The importance of proline for osmotic adjustment in primed plants over TSS was confirmed in the present study by the higher level of proline in P/ShK plants, compared with Shk plants, while TSS were comparable in both plant groups.…”

Section: Discussionsupporting

confidence: 67%

“…Working on sweet sorghum, Yan et al [56] documented enhanced activity for SOD and APX in primed plants exposed to salt stress, compared with unprimed stressed conditions, while CAT appeared to be insignificantly affected with pretreatment. Working with the same species, Guo et al [68] found, surprisingly, that seed priming with NaCl was accompanied by higher levels of CAT and POX under salt stress, compared with the exposure to salt stress without priming. The same results were recorded for melon plants derived from saltprimed seeds [69].…”

Section: Discussionmentioning

confidence: 99%

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Salt Priming as a Smart Approach to Mitigate Salt Stress in Faba Bean (Vicia faba L.)

Nasrallah

Atia

El-Maksoud

et al. 2022

Plants

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The present investigation aims to highlight the role of salt priming in mitigating salt stress on faba bean. In the absence of priming, the results reflected an increase in H2O2 generation and lipid peroxidation in plants subjected to 200 mM salt shock for one week, accompanied by a decline in growth, photosynthetic pigments, and yield. As a defense, the shocked plants showed enhancements in ascorbate peroxidase (APX), catalase (CAT), glutathione reductase (GR), peroxidase (POX), and superoxide dismutase (SOD) activities. Additionally, the salt shock plants revealed a significant increase in phenolics and proline content, as well as an increase in the expression levels of glutathione (GSH) metabolism-related genes (the L-ascorbate peroxidase (L-APX) gene, the spermidine synthase (SPS) gene, the leucyl aminopeptidase (LAP) gene, the aminopeptidase N (AP-N) gene, and the ribonucleo-side-diphosphate reductase subunit M1 (RDS-M) gene). On the other hand, priming with increasing concentrations of NaCl (50–150 mM) exhibited little significant reduction in some growth- and yield-related traits. However, it maintained a permanent alert of plant defense that enhanced the expression of GSH-related genes, proline accumulation, and antioxidant enzymes, establishing a solid defensive front line ameliorating osmotic and oxidative consequences of salt shock and its injurious effect on growth and yield.

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Section: Discussionsupporting

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Salt Priming as a Smart Approach to Mitigate Salt Stress in Faba Bean (Vicia faba L.)

Nasrallah

Atia

El-Maksoud

et al. 2022

Plants

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“…The reduction in growth characteristics was more pronounced at a soil salinity of 8 dS m −1 . Previous studies, such as those by Guo et al (2022) and Dehnavi et al (2022), have shown that soil salinity negatively affects sorghum's fresh and dry weights. Plant growth regulators positively affect salinity tolerance by maintaining cell turgor and protecting plants from oxidative stress, thus increasing plant growth (Ibrahim, 2016; Mansour et al, 2021).…”

Section: Discussionmentioning

confidence: 93%

Effects of melatonin, proline, and salicylic acid on seedling growth, photosynthetic activity, and leaf nutrients of sorghum under salt stress

Kiremit,

Öztürk,

Arslan

et al. 2024

Plant Direct

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Soil salinization poses a significant challenge to the sustainability and productivity of agriculture worldwide. This issue continues to hinder plant growth, requiring innovative solutions to alleviate salt stress. Moreover, climate change accelerates soil salinization, which may soon spread to previously unaffected agricultural areas. Therefore, the present study evaluated the potential role of different seed priming agents (hydro (H), salicylic acid (SA), proline (P), and melatonin (MEL)) on seedlings and leaf macro and micronutrients of sorghum grown under four (.27, 2.5, 5.0, and 8.0 dS m−1) soil salinity conditions. Soil salinity drastically reduced all the growth parameters of sorghum seedlings, primarily the reduction in growth traits, which was remarkable after 2.5 dS m−1 soil salinity. In addition, plant height, shoot fresh weight, and stomata were reduced by 40.8%, 74.6%, and 36.5%, respectively, at 8.0 dS m−1 compared to .27 dS m−1. SA‐ and MEL‐primed seeds mitigated the harmful effects of soil salinity by reducing Na+ accumulation in the leaves and increasing the K+/Na+ and Ca2+/Na+ ratios and photosynthetic activity under salt stress. However, the Zn2+, Mn2+, and Cu2+ contents of sorghum leaves increased with increasing soil salinity, and these nutrients also improved with seed priming by SA, MEL, and P. Considering all nutrients, MEL‐primed sorghum seeds had better macro‐ and micro‐nutrient uptake capacities than the H, SA, and P treatments under high soil salinity conditions. Finally, the present study showed that MEL‐induced improvement in salt tolerance in sorghum seedlings was related to enhanced nutritional status, photosynthetic activity, and biomass production in salinized areas.

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“…Thus, by stimulating the plant antioxidant defense system in advance, it is possible to create a stress memory and increase stress tolerance (Sher et al, 2019). The effects of priming agents differ depending on their concentrations and the species of plant (Guo et al, 2022). Osmo-priming provides initiation of metabolic preparations for germination by controlling the water absorption in the seed under drought stress induced by polyethylene glycol (PEG) (Jisha et al, 2013;Abid et al, 2018).…”

Section: Kuraklık Stresi Altında Farklı Priming Uygulamalarının Buğda...mentioning

confidence: 99%

Effects of Different Priming Treatments on Germination and Seedling Growth of Wheat under Drought Stress

Günay

YILDIZ>

Acar

2022

ÇOMÜ Ziraat Fakültesi Dergisi

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Wheat (Triticum aestivum L.) is a widely cultivated agricultural crop in dry areas. However, drought is one of the most limiting environmental stress factors for crop production in the world's agricultural areas. Seed priming is a physiological technique involving seed hydration and drying to improve metabolic processes before germination. The aim of this study is to determine the effect of four different priming treatments (hormo-priming (gibberellic acid, GA3), redox-priming (hydrogen peroxide, H2O2), osmo-priming (polyethylene glycol, PEG) and thermo-priming (38oC)) on total chlorophyll content (SPAD), relative water content (RWC), specific leaf area (SLA), H2O2 amounts and shoot-root lengths in a local wheat variety (cv. Ekiz). Drought stress significantly decreased seed germination, shoot-root lengths, SLA, SPAD and RWC while increasing H2O2 content. Thermo-priming treatments fully improved the negative effects of drought on chlorophyll amount and germination compared to control plants. However, shoot-root lengths improved only in half level of control plants. While drought stress decreased seed germination by 14%, hormo-priming treatment ensured germination of all seeds. On the contrary of other priming treatments, hormo-priming and osmo-priming treatments increased RWC. Consequently, thermo-priming and hormo-priming treatments found most effective than the other priming treatments in drought stress resistance for cv. Ekiz.

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Seed priming improved salt-stressed sorghum growth by enhancing antioxidative defense

Cited by 20 publications

References 34 publications

Salt Priming as a Smart Approach to Mitigate Salt Stress in Faba Bean (Vicia faba L.)

Salt Priming as a Smart Approach to Mitigate Salt Stress in Faba Bean (Vicia faba L.)

Effects of melatonin, proline, and salicylic acid on seedling growth, photosynthetic activity, and leaf nutrients of sorghum under salt stress

Effects of Different Priming Treatments on Germination and Seedling Growth of Wheat under Drought Stress

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