Ethylene response of salt stressed rice seedlings following Ethephon and 1-methylcyclopropene seed priming

Hussain, Sajid; C, Zhu; Huang, Jie; Huang, Jing; Zhu, Li; Cao, Xiaochuang; Nanda, Satyabrata; Khaskheli, Maqsood Ahmed; Liang, Qingduo; Kong, Yali; Jin, Qing; Zhang, Junhua

doi:10.1007/s10725-020-00632-1

Cited by 18 publications

(4 citation statements)

References 40 publications

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“…Ethylene plays a major role in seed germination, growth, yield, and various physiological processes (Hussain et al, 2019;Ahmed et al, 2020), including root elongation and root hair formation in association with IAA (Muday et al, 2012). Salinity strongly increased ethylene production (Figure 4), resulting in depressed plant growth, increased ROS production and adverse physiological consequences (Steffens, 2014;Hussain et al, 2020b). Conversely, SA application considerably reduced ethylene production (Figure 4), resulting in significant improvement in growth and physiological traits.…”

Section: Discussionmentioning

confidence: 99%

Improved salinity tolerance in early growth stage of maize through salicylic acid foliar application

Sultan

Khan

Chattha

et al. 2021

Italian Journal of Agronomy

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Soil salinity threatens agricultural production worldwide by constraining plant growth and final crop yield. The early stages are most sensitive to salinity, in response to which salicylic acid (SA) has demonstrated beneficial effects in various plant species. Based on this, a maize (Zea mays L.) pot experiment was set up combining three levels of soil salinity (0, 6 and 12 dS m–1), obtained through NaCl addition, with three levels of SA (0, 300 and 600 mM), applied by leaf spraying 20 days after seedling emergence. Fifteen days later, the following traits were assessed: morphology (plant height, leaf number), growth (root and shoot dry weight), leaf water status [relative water content (RWC), electrolyte leakage (EL)], pigments (chlorophyll a and b, carotenoids, anthocyanin), antioxidant enzymes (peroxidase, catalase, ascorbate peroxidase, vitamin C), oxidative stress markers (H2O2, malondialdehyde), osmo-regulating compounds (free amino acids, soluble proteins and sugars, proline), hormones [indole-3-acetic acid, gibberellic acid (GA), abscisic acid (ABA), ethylene], element (Na, K, Ca, Mg and Cl) concentration and content in roots, stem and leaves. Salinity severely affected maize growth (–26% total dry weight), impaired leaf water status (–31% RWC), reduced photosynthetic pigments, enhanced all antioxidant enzymes and oxidative stress markers, two osmo-regulating compounds (soluble sugars and proline) out of four, and all hormones except GA. SA was shown effective in containing most of the stress effects, while supporting plant defences by upgrading antioxidant activities (reduced oxidative stress markers), increasing cell membrane stability (–24% EL) and leaf water status (+20% RWC), and reducing plant stress signalling (–10% ABA and -20% ethylene). Above all, SA contrasted the massive entry of noxious ions (Na+ and Cl–), in favour of K+, Ca2+ and Mg2+ accumulation. Lastly, salicylic acid was shown beneficial for maize growth and physiology also under non-saline condition, suggesting a potential use in normal field conditions. Highlights - Foliar applied salicylic acid alleviated salinity effects on maize growth at early plant stage. - Salicylic acid improved leaf water status, chlorophyll content, and strengthened anti-oxidant enzymes under salinity. - Salicylic acid reduced oxidative stress markers while enhancing osmo-regulating and hormonal responses to salinity. - Salicylic acid hampered Na and Cl entry and translocation to above ground organs, preserving leaf cell membrane integrity. - Salicylic acid was shown beneficial for maize growth and physiology also under non-saline conditions.

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Section: Discussionmentioning

confidence: 99%

Improved salinity tolerance in early growth stage of maize through salicylic acid foliar application

Sultan

Khan

Chattha

et al. 2021

Italian Journal of Agronomy

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“…The external application of Jasmonic acid tends to increase the tolerance against salinity in rice plants. Seed priming with Ethephon with a suitable ethylene inhibitor like 1-MCP can help increase the germination rates in rice seedlings under salt stress (Hussain et al, 2020). But some studies also suggest that ethylene negatively impacts rice seedlings (Qin and Huang 2020).…”

Section: Plant Hormones In Salinity Stressmentioning

confidence: 99%

Salt stress and its impact on rice physiology with special reference to India- A review

Sezhiyan,

Subiramaniyan,

Perumal

et al. 2023

JANS

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With the increasing population, by 2030, the population of India will have seen an unprecedented rise of 1.43 billion and require food grains of around 311 million tones. Of the total area, nearly 5% of the area in India is affected by soil salinity. It is said that about 10% of soil is salinized every year. At this rate, 50% of the land area will be salinized by 2050.These repercussions challenge us to expand the area under cultivation or to increase the yield per unit area to maintain food security and sustainability. In order to meet the growing demands of the increased population, two major approaches can be met. Firstly, the available area under cultivation must be increased, which can be done by the reclamation of various problematic soils and making them suitable for cultivation. The second and holistic approach is to employ various biotechnological and breeding aspects in the development of resistant varieties surviving the harsh and unfavourable environment and showing no subsequent reduction in the yield parameters. For this, one must understand the various physiological aspects of tolerance for screening the elite varieties suited for a particular ecosystem or environment. Thus, the present study vividly explains the various physiological aspects of salt stress on rice. Employing these techniques, one can screen superior genotypes resistant to various stresses, thus keeping the Malthus predictions at bay.

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“…At present, salt tolerance and the potential mechanisms of salt tolerance of a large number of plant varieties have been studied, such as Arabidopsis [ 3 , 4 ], tobacco [ 5 ], corn [ 6 ] and tomato [ 7 ]. Research on soybeans [ 8 ] and rice [ 9 ] have shown that the method of increasing the plant expression of intrinsic salt tolerance genes can effectively enhance their salt tolerance.…”

Section: Introductionmentioning

confidence: 99%

Chrysanthemum × grandiflora leaf and root transcript profiling in response to salinity stress

Liu

et al. 2022

BMC Plant Biol

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As high soil salinity threatens the growth and development of plants, understanding the mechanism of plants’ salt tolerance is critical. The Chrysanthemum × grandiflora is a newly developed species with a strong salt resistance that possesses multiple genes controlling its quantitative salt resistance. Because of this multigene control, we chose to investigate the plant stress genes overall responses at the transcriptome level. C. grandiflora were treated with a 200 mM NaCl solution for 12 h to study its effect on the roots and leaves via Illumina RNA sequencing. PAL, CYP73A, and 4CL in the phenylpropanoid biosynthesis pathway were upregulated in roots and leaves. In the salicylic acid signal transduction pathway, TGA7 was upregulated in the roots and leaves, while in the jasmonic acid signal transduction pathway, TIFY9 was upregulated in the roots and leaves. In the ion transporter gene, we identified HKT1 that showed identical expression patterns in the roots and leaves. The impact of NaCl imposition for 12 h was largely due to osmotic effect of salinity on C. grandiflora, and most likely the transcript abundance changes in this study were due to the osmotic effect. In order to verify the accuracy of the Illumina sequencing data, we selected 16 DEGs for transcription polymerase chain reaction (qRT-PCR) analysis. qRT-PCR and transcriptome sequencing analysis revealed that the transcriptome sequencing results were reliable.

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Ethylene response of salt stressed rice seedlings following Ethephon and 1-methylcyclopropene seed priming

Cited by 18 publications

References 40 publications

Improved salinity tolerance in early growth stage of maize through salicylic acid foliar application

Improved salinity tolerance in early growth stage of maize through salicylic acid foliar application

Salt stress and its impact on rice physiology with special reference to India- A review

Chrysanthemum × grandiflora leaf and root transcript profiling in response to salinity stress

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