A brief appraisal of ethylene signaling under abiotic stress in plants

Husain, Tajammul; Fatima, Abreeq; Suhel, Mohammad; Singh, Shikha; Sharma, Anket; Prasad, Sheo Mohan; Singh, Vijay Pratap

doi:10.1080/15592324.2020.1782051

Cited by 80 publications

(49 citation statements)

References 65 publications

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“…Moreover, it has a crucial role during cell signaling for stress tolerance in several plant species. The biosynthesis and sources of ET production, interaction with other signaling molecules, and its exogenous application under different abiotic stresses have been discussed (Hussain et al, 2020).…”

Section: Ethylene Induced Physiological and Biochemical Mechanisms Of Stress Tolerancementioning

confidence: 99%

Potential Role of Plant Growth Regulators in Administering Crucial Processes Against Abiotic Stresses

et al. 2021

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Plant growth regulators are naturally biosynthesized chemicals in plants that influence physiological processes. Their synthetic analogous trigger numerous biochemical and physiological processes involved in the growth and development of plants. Nowadays, due to changing climatic scenario, numerous biotic and abiotic stresses hamper seed germination, seedling growth, and plant development leading to a decline in biological and economic yields. However, plant growth regulators (PGRs) can potentially play a fundamental role in regulating plant responses to various abiotic stresses and hence, contribute to plant adaptation under adverse environments. The major effects of abiotic stresses are growth and yield disturbance, and both these effects are directly overseen by the PGRs. Different types of PGRs such as abscisic acid (ABA), salicylic acid (SA), ethylene (ET), and jasmonates (JAs) are connected to boosting the response of plants to multiple stresses. In contrast, PGRs including cytokinins (CKs), gibberellins (GAs), auxin, and relatively novel PGRs such as strigolactones (SLs), and brassinosteroids (BRs) are involved in plant growth and development under normal and stressful environmental conditions. Besides, polyamines and nitric oxide (NO), although not considered as phytohormones, have been included in the current review due to their involvement in the regulation of several plant processes and stress responses. These PGRs are crucial for regulating stress adaptation through the modulates physiological, biochemical, and molecular processes and activation of the defense system, upregulating of transcript levels, transcription factors, metabolism genes, and stress proteins at cellular levels. The current review presents an acumen of the recent progress made on different PGRs to improve plant tolerance to abiotic stress such as heat, drought, salinity, and flood. Moreover, it highlights the research gaps on underlying mechanisms of PGRs biosynthesis under stressed conditions and their potential roles in imparting tolerance against adverse effects of suboptimal growth conditions.

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Section: Ethylene Induced Physiological and Biochemical Mechanisms Of Stress Tolerancementioning

confidence: 99%

Potential Role of Plant Growth Regulators in Administering Crucial Processes Against Abiotic Stresses

et al. 2021

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“…Signaling molecules such as ABA, CK, indole acetic acid (IAA), gibberrelins (GA), ROS, and Ca 2+ interacts with ETH and thereby contribute in plant stress-adaptation [15,138,149,150]. The DELLA proteins and GA-opposable growth inhibitors of the GA signaling pathway participate in plant salt-tolerance [151].…”

Section: Ethylene In Salt Tolerancementioning

confidence: 99%

Coordinated Role of Nitric Oxide, Ethylene, Nitrogen, and Sulfur in Plant Salt Stress Tolerance

et al. 2021

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Salt stress significantly contributes to major losses in agricultural productivity worldwide. The sustainable approach for salinity-accrued toxicity has been explored. The use of plant growth regulators/phytohormones, mineral nutrients and other signaling molecules is one of the major approaches for reversing salt-induced toxicity in plants. Application of the signaling molecules such as nitric oxide (NO) and ethylene (ETH) and major mineral nutrient such as nitrogen (N) and sulfur (S) play significant roles in combatting the major consequences of salt stress impacts in plants. However, the literature available on gaseous signaling molecules (NO/ETH) or/and mineral nutrients (N/S) stands alone, and major insights into the role of NO or/and ETH along with N and S in plant-tolerance to salt remained unclear. Thus, this review aimed to (a) briefly overview salt stress and highlight salt-induced toxicity, (b) appraise the literature reporting potential mechanisms underlying the role of gaseous signaling molecules and mineral nutrient in salt stress tolerance, and (c) discuss NO and ETH along with N and S in relation to salt stress tolerance. In addition, significant issues that have still to be investigated in this context have been mentioned.

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“…This happens as a rapid surge of ACC (the immediate precursor of ethylene) levels in plant cells either during the interaction with phytopathogens [ 3 ] or exposure to abiotic stresses like heavy metal, drought, salinity, etc. [ 4 , 5 ]. The influence of pathogen-induced ethylene in virulence and disease development has been studied earlier [ 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Structural heterogeneity assessment among the isoforms of fungal 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase: a comparative in silico perspective

Pramanik¹,

Mandal²

2022

Journal of Genetic Engineering and Biotechnology

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Background The primary amino acid sequence of a protein is a translated version from its gene sequence which carries important messages and information concealed therein. The present study unveils the structure-function and evolutionary aspects of 1-aminocyclopropane-1-carboxylic acid deaminase (ACCD) proteins of fungal origin. ACCD, an important plant growth-promoting microbial enzyme, is less frequent in fungi compared to bacteria. Hence, an inclusive understanding of fungal ACC deaminases (fACCD) has brought forth here. Results In silico investigation of 40 fACCD proteins recovered from NCBI database reveals that fACCD are prevalent in Colletotrichum (25%), Fusarium (15%), and Trichoderma (10%). The fACCD were found 16.18–82.47 kDa proteins having 149–750 amino acid residues. The enzyme activity would be optimum in a wide range of pH having isoelectric points 4.76–10.06. Higher aliphatic indices (81.49–100.13) and instability indices > 40 indicated the thermostability nature. The secondary structural analysis further validates the stability owing to higher α-helices. Built tertiary protein models designated as ACCNK1–ACCNK40 have been deposited in the PMDB with accessions PM0083418–39 and PM0083476–93. All proteins were found as homo-dimer except ACCNK13, a homo-tetramer. Conclusions Hence, these anticipated features would facilitate to explore and identify novel variants of fungal ACCD in vitro aiming to industrial-scale applications.

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A brief appraisal of ethylene signaling under abiotic stress in plants

Cited by 80 publications

References 65 publications

Potential Role of Plant Growth Regulators in Administering Crucial Processes Against Abiotic Stresses

Potential Role of Plant Growth Regulators in Administering Crucial Processes Against Abiotic Stresses

Coordinated Role of Nitric Oxide, Ethylene, Nitrogen, and Sulfur in Plant Salt Stress Tolerance

Structural heterogeneity assessment among the isoforms of fungal 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase: a comparative in silico perspective

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