The significance and functions of ethylene in flooding stress tolerance in plants

Khan, M. Iqbal R.; Trivellini, Alice; Chhillar, Himanshu; Chopra, Priyanka; Ferrante, António; Khan, Nafees A.; Ismail, Abdelbagi M.

doi:10.1016/j.envexpbot.2020.104188

Cited by 82 publications

(44 citation statements)

References 159 publications

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“…These processes can lead to the spread of, for example, heavy metals, which can create severe ecological problems even at low levels ( Wuana and Okieimen, 2011 ). There are other abiotic stresses that are more location specific, including frost ( Keep et al, 2021 ; Simioniuc et al, 2021 ), ultraviolet radiation ( Böttner et al, 2021 ; Navarro et al, 2021 ), and floods ( Khan et al, 2020 ; Liu et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Rhizospheric Bacillus amyloliquefaciens Protects Capsicum annuum cv. Geumsugangsan From Multiple Abiotic Stresses via Multifarious Plant Growth-Promoting Attributes

et al. 2021

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Plant growth-promoting rhizobacteria (PGPR) are beneficial microorganisms that can be utilized to improve plant responses against biotic and abiotic stresses. In this study, we investigated whether PGPR (Bacillus amyloliquefaciens) isolated from the endorhizosphere of Sasamorpha borealis have the potential to sustain pepper growth under drought, salinity, and heavy metal stresses. The bacterial strain was determined based on 16S rDNA and gyrB gene sequencing and characterized based on the following biochemical traits: nitrogen fixation; 1-aminocyclopropane-1-carboxylate deaminase activity; indole acetic acid production; inorganic phosphate, potassium, zinc, and silicon solubilization; and siderophore production. Various abiotic stresses were applied to 28-day-old pepper seedlings, and the influence of the PGPR strain on pepper seedling growth under these stress conditions was evaluated. The application of PGPR improved survival of the inoculated pepper plants under stress conditions, which was reflected by higher seedling growth rate and improved physiochemical traits. The PGPR-treated plants maintained high chlorophyll, salicylic acid, sugar, amino acid, and proline contents and showed low lipid metabolism, abscisic acid, protein, hydrogen peroxide contents, and antioxidant activities under stress conditions. Gene expression studies confirmed our physiological and biochemical findings. PGPR inoculation led to enhanced expression of XTH genes and reduced expression of WRKY2, BI-1, PTI1, and binding immunoglobulin protein (BiP) genes. We conclude that the PGPR strain described in this study has great potential for use in the phytoremediation of heavy metals and for enhancing pepper plant productivity under stress conditions, particularly those involving salinity and drought.

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Section: Introductionmentioning

confidence: 99%

Rhizospheric Bacillus amyloliquefaciens Protects Capsicum annuum cv. Geumsugangsan From Multiple Abiotic Stresses via Multifarious Plant Growth-Promoting Attributes

et al. 2021

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“…The signal perception of ET takes place at the membrane of endoplasmic reticulum and is bacterial two-component type which initiates a cascade signaling events through transcriptional regulation in the nucleus, thus eventually controlling a myriad of plant developmental events. Meanwhile, the interplay of ET with other signaling molecules provides adaptation to plants under various abiotic pressures [7,8,[82][83][84][85][86][87][88]. Now, we will focus our attention on various reports on the functions of ET on tolerance toward major abiotic stresses in crop plants.…”

Section: Role Of Ethylenementioning

confidence: 99%

Abiotic Stress Tolerance in Crop Plants: Role of Phytohormones

Alhaithloul¹,

Abu-Elsaoud²,

Soliman³

2021

Abiotic Stress in Plants

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Crop plants are encountered by various abiotic pressures which limit their growth and development. Stresses such as drought, heat, pathogen attack, heavy metal, salinity, and radiations impose negative effect on crop plants. The reduction in crop productivity in the current era of climate change is compromising the efforts/strategies used for sustainable agricultural practices. Therefore, plant stress physiologists are engineering plants with suitable exogenous signaling elicitors to engineer tolerance to various stresses. In the present chapter, an appraisal has been made in the "Introduction" section to first assess the damages caused by various abiotic stresses in crop plants. In the second section, we attempt to summarize the role of various plant hormones, namely, salicylic acid (SA), brassinosteroids (BRs), ethylene (ET), and methyl jasmonate (MJ) in enhancing abiotic stress tolerance. The current concept may lead to the development of strategies for unraveling the underlying mechanisms of plant hormone-mediated abiotic stress tolerance in crop plants.

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“…IAA-induced ethylene at lower concentration promotes initiation of root but at higher concentration, inhibiting root growth (Ali and Kim, 2018). Complete submergence induces ethylene biosynthesis and ethylene accumulation in most plant species (Khan et al, 2020). In contrast to other stresses, gas diffusion is inhibited under submergence because the diffusion coefficient of ethylene in water is 10,000 times lower than in air.…”

Section: Introductionmentioning

confidence: 99%

“…The excess ethylene entrapped in the plant tissue and its effect under submergence is crop species specific. Rice is the most studied crop for submergence-tolerant species because it is an important crop in humid tropic and areas affected by high rainfall (Jackson, 2008;Khan et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Alleviation of Submergence Stress in Rice Seedlings by Plant Growth-Promoting Rhizobacteria With ACC Deaminase Activity

Bal

Adhya

2021

Front. Sustain. Food Syst.

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Submergence stress slows seed germination, imposes fatalities, and delays seedling establishment in rice. Seeds of submergence susceptible rice variety IR 42 were inoculated with four 1-aminocyclopropane-1-carboxylic acid (ACC) utilizing isolates viz., Bacillus sp. (AR-ACC1), Microbacterium sp. (AR-ACC2), Methylophaga sp. (AR-ACC3), and Paenibacillus sp. (ANR-ACC3) and subjected to submergence stress under controlled conditions for 7 days. Seeds treated with Microbacterium sp. AR-ACC2, Paenibacillus sp. ANR-ACC3, and Methylophaga sp. AR-ACC3 significantly enhanced the germination percentage (GP), seedling vigor index (SVI), and other growth parameters like root and shoot length and total chlorophyll contents, when compared with nonbacterized seeds submerged similarly. However, the values were statistically at par when control seeds were treated with l-α-(2-aminoethoxyvinyl) glycine hydrochloride (AVG), a known inhibitor of ethylene production. Results suggest that stress ethylene production was significantly reduced by around 85% in seedlings treated with Microbacterium sp. AR-ACC2 as compared with untreated control seeds under submergence. Paenibacillus sp. ANR-ACC3 and Methylophaga sp. AR-ACC3 were the next effective strains. Ethylene synthesis in seedlings was statistically at par with seeds treated with AVG suggesting ACC deaminase can effectively reduce ethylene levels in plants subjected to submergence. Bacillus sp. (AR-ACC1) was neither able to significantly promote seedling growth parameters nor inhibit ethylene production as compared with control seeds. Results suggest that flooded soil planted to rice harbor microorganisms with plant growth-promoting properties that can be used effectively to alleviate submergence stresses in susceptible rice varieties under field conditions.

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The significance and functions of ethylene in flooding stress tolerance in plants

Cited by 82 publications

References 159 publications

Rhizospheric Bacillus amyloliquefaciens Protects Capsicum annuum cv. Geumsugangsan From Multiple Abiotic Stresses via Multifarious Plant Growth-Promoting Attributes

Rhizospheric Bacillus amyloliquefaciens Protects Capsicum annuum cv. Geumsugangsan From Multiple Abiotic Stresses via Multifarious Plant Growth-Promoting Attributes

Abiotic Stress Tolerance in Crop Plants: Role of Phytohormones

Alleviation of Submergence Stress in Rice Seedlings by Plant Growth-Promoting Rhizobacteria With ACC Deaminase Activity

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