Growth and physiological responses of cotton plants to salt stress

Ma, Yingying; Wei, Zhenhua; Liu, Jie; Liu, Xuezhi; Liu, Fulai

doi:10.1111/jac.12484

Cited by 28 publications

(18 citation statements)

References 52 publications

(82 reference statements)

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“…During the first phase of salt stress, Ma et al ( 2021 ) reported stunted maize growth to appear with a reduced root and shoot system owing to the poor extension of cells. Similarly, the growth of salt-resistant hybrids demonstrated that it was cell wall extensibility, not turgor, that limited cell extension expansion during the initial phase.…”

Section: Discussionmentioning

confidence: 99%

Growth-Promoting Endophytic Fungus (Stemphylium lycopersici) Ameliorates Salt Stress Tolerance in Maize by Balancing Ionic and Metabolic Status

et al. 2022

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Climate change is a major cause of the world's food security problems, and soil salinity is a severe hazard for a variety of crops. The exploitation of endophytic fungi that are known to have a positive association with plant roots is preferred for improving plant growth, yield, and overall performance under salt stress. The current study thus rationalized to address how salt stress affected the growth, biochemical properties, antioxidant capacity, endogenous indole-3-acetic acid (IAA), and the ionic status of maize associated with endophytic fungus (Stemphylium lycopersici). According to the findings, salt stress reduced chlorophyll a and b, total chlorophyll, total protein, sugars, lipids, and endogenous IAA levels. Enhanced values of chlorophyll a/b ratio, carotenoids, secondary metabolites (phenol, flavonoids, and tannins), antioxidant enzyme activity (catalase, ascorbate peroxidase), proline, and lipid peroxidation were noticed in maize plants under salt stress. Increased ionic content of Na+, Cl−, Na+/K+, and Na+/Ca2+ ratio, as well as decreased Ca2+, K+, Mg2+, N, and P contents, were also found in salt-stressed maize plants. In comparison to the non-saline medium, endophytic association promoted the antioxidant enzyme activities (798.7 U/g protein; catalase activity, 106 U/g protein; ascorbate peroxidase activity), IAA content (3.47 mg/g FW), and phenolics and flavonoids (88 and 1.68 μg/g FW, respectively), and decreased MDA content (0.016 nmol/g FW), Na+ ion content (18 mg/g dry weight), Cl− ion (16.6 mg/g dry weight), and Na+/K+ (0.78) and Na+/Ca2+ (1.79) ratios, in maize plants under salt stress, whereas Ca2+, K+, Mg2+, N, and P contents were increased in maize plants associated with S. lycopersici under salt stress. Current research exposed the role of S. lycopersici as an effective natural salt stress reducer and maize growth promoter; hence, it can be used as a biofertilizer to ameliorate salt stress tolerance in crops along with better growth performance in saline regions.

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Section: Discussionmentioning

confidence: 99%

Growth-Promoting Endophytic Fungus (Stemphylium lycopersici) Ameliorates Salt Stress Tolerance in Maize by Balancing Ionic and Metabolic Status

et al. 2022

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“…Cotton is the most important natural textile fiber crop and plays an important role in agricultural production, industry and human life more broadly. It has some degree of salt tolerance and is grown in large quantities in saline–alkali soil conditions [ 30 ]. However, the seedling stage is the critical stage of development in which cotton is vulnerable to salt stress, and thus, salt can affect plant development and yield formation in cotton.…”

Section: Introductionmentioning

confidence: 99%

Effects of Exogenous Melatonin on Root Physiology, Transcriptome and Metabolome of Cotton Seedlings under Salt Stress

Duan

Liu

et al. 2022

IJMS

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Root systems are the key organs through which plants absorb water and nutrients and perceive the soil environment and thus are easily damaged by salt stress. Melatonin can alleviate stress-induced damage to roots. The present study investigated the effects of exogenous melatonin on the root physiology, transcriptome and metabolome of cotton seedlings under salt stress. Salt stress was observed to damage the cell structure and disorder the physiological system of cotton seedling roots. After subjecting melatonin-soaked seeds to salt stress, the activities of SOD, CAT and POD in cotton seedling roots increased by 10–25%, 50–60% and 50–60%, respectively. The accumulation of H2O2 and MDA were significantly decreased by 30–60% and 30–50%, respectively. The contents of soluble sugar, soluble protein and K+ increased by 15–30%, 15–30% and 20–50%, respectively, while the Na+ content was significantly reduced. Melatonin also increased auxin (by 20–40%), brassinosteroids (by 5–40%) and gibberellin (by 5–35%) and promoted melatonin content and root activity. Exogenous melatonin maintained the integrity of root cells and increased the number of organelles. Transcriptomic and metabolomic results showed that exogenous melatonin could mitigate the salt-stress-induced inhibition of plant root development by regulating the reactive oxygen species scavenging system; ABC transporter synthesis; plant hormone signal transduction, endogenous melatonin gene expression; and the expression of the transcription factors MYB, TGA and WRKY33. These results provide a new direction and empirical basis for improving crop salt tolerance with melatonin.

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“…Plants driving for water due to salinity stress have an elongated and dense root system (Rahnama et al, 2019). Therefore, we can deduce that at a moderate concentration of salt, the maize plant enhanced its root system at the expense of the shoot system (Ma et al, 2021). In most plant species grown under salinity, Na+ appears to reach a toxic concentration before Cl− does, hence most studies have concentrated on Na + exclusion and the control of Na + transport within the plant.…”

Section: Resultsmentioning

confidence: 99%

Effect of Sodium Chloride Stress on the Adaptation of Zea mays Seedlings at the Expense of Growth

Yousaf¹,

Ali²,

Ali³

2021

SJA

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Growth and physiological responses of cotton plants to salt stress

Cited by 28 publications

References 52 publications

Growth-Promoting Endophytic Fungus (Stemphylium lycopersici) Ameliorates Salt Stress Tolerance in Maize by Balancing Ionic and Metabolic Status

Growth-Promoting Endophytic Fungus (Stemphylium lycopersici) Ameliorates Salt Stress Tolerance in Maize by Balancing Ionic and Metabolic Status

Effects of Exogenous Melatonin on Root Physiology, Transcriptome and Metabolome of Cotton Seedlings under Salt Stress

Effect of Sodium Chloride Stress on the Adaptation of Zea mays Seedlings at the Expense of Growth

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