Abscisic acid in plants under abiotic stress: crosstalk with major phytohormones

Singh, Ankur; Roychoudhury, Aryadeep

doi:10.1007/s00299-023-03013-w

Cited by 62 publications

(21 citation statements)

References 146 publications

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“…Abscisic acid (ABA), a sesquiterpene, is a phytohormone that regulates seed germination, plant growth, development, and response to environmental stress. ABA can be rapidly synthesized under stress conditions, such as extreme temperature (high and low temperature), salt, and drought stress, and thus increases the stress tolerance in plants [8,9]. Therefore, ABA is also known as a stress hormone.…”

Section: Introductionmentioning

confidence: 99%

The Essential Role of H2S-ABA Crosstalk in Maize Thermotolerance through the ROS-Scavenging System

Wang,

Xiang,

2023

IJMS

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Hydrogen sulfide (H2S) and abscisic acid (ABA), as a signaling molecule and stress hormone, their crosstalk-induced thermotolerance in maize seedlings and its underlying mechanism were elusive. In this paper, H2S and ABA crosstalk as well as the underlying mechanism of crosstalk-induced thermotolerance in maize seedlings were investigated. The data show that endogenous levels of H2S and ABA in maize seedlings could be mutually induced by regulating their metabolic enzyme activity and gene expression under non-heat stress (non-HS) and HS conditions. Furthermore, H2S and ABA alone or in combination significantly increase thermotolerance in maize seedlings by improving the survival rate (SR) and mitigating biomembrane damage. Similarly, the activity of the reactive oxygen species (ROS)-scavenging system, including enzymatic antioxidants catalase (CAT), ascorbate peroxidase (APX), guaiacol peroxidase (POD), glutathione reductase (GR), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), and superoxide dismutase (SOD), as well as the non-enzymatic antioxidants reduced ascorbic acid (AsA), carotenoids (CAR), flavone (FLA), and total phenols (TP), was enhanced by H2S and ABA alone or in combination in maize seedlings. Conversely, the ROS level (mainly hydrogen peroxide and superoxide radical) was weakened by H2S and ABA alone or in combination in maize seedlings under non-HS and HS conditions. These data imply that the ROS-scavenging system played an essential role in H2S-ABA crosstalk-induced thermotolerance in maize seedlings.

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Section: Introductionmentioning

confidence: 99%

The Essential Role of H2S-ABA Crosstalk in Maize Thermotolerance through the ROS-Scavenging System

Wang,

Xiang,

2023

IJMS

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“…Plant hormones are organic compounds produced in trace amounts within plants, and they play a crucial role in regulating various physiological processes throughout their life cycle. Abscisic acid (ABA), commonly referred to as a stress hormone, regulates stomatal opening, growth, and development, but also contributes to plant responses to abiotic stress [ 52 , 53 ]. By conducting qRT-PCR, we observed that all of the selected genes were regulated by ABA treatment.…”

Section: Discussionmentioning

confidence: 99%

Comprehensive Genomic Analysis of Trihelix Family in Tea Plant (Camellia sinensis) and Their Putative Roles in Osmotic Stress

Lang,

Xu,

et al. 2023

Plants

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In plants, Trihelix transcription factors are responsible for regulating growth, development, and reaction to various abiotic stresses. However, their functions in tea plants are not yet fully understood. This study identified a total of 40 complete Trihelix genes in the tea plant genome, which are classified into five clades: GT-1 (5 genes), GT-2 (8 genes), GTγ (2 genes), SH4 (7 genes), and SIP1 (18 genes). The same subfamily exhibits similar gene structures and functional domains. Chromosomal mapping analysis revealed that chromosome 2 has the most significant number of trihelix family members. Promoter analysis identified cis-acting elements in C. sinensis trihelix (CsTH), indicating their potential to respond to various phytohormones and stresses. The expression analysis of eight representative CsTH genes from four subfamilies showed that all CsTHs were expressed in more tissues, and three CsTHs were significantly induced under ABA, NaCl, and drought stress. This suggests that CsTHs plays an essential role in tea plant growth, development, and response to osmotic stress. Furthermore, yeast strains have preliminarily proven that CsTH28, CsTH36, and CsTH39 can confer salt and drought tolerance. Our study provides insights into the phylogenetic relationships and functions of the trihelix transcription factors in tea plants. It also presents new candidate genes for stress-tolerance breeding.

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“…The changes in the root system architecture are often attributed to hormones produced by PGPB. The senescence induced by abiotic stress results in crop yield and significant economic losses for farmers, which is mainly due to the crosstalk between plant hormones under stress, especially cytokinin and abscisic acid [157][158][159][160][161][162]. Drought stress leads to the accumulation of abscisic acid, and excessive abscisic acid reduces the cytokinin content via the MYB2-dependent repression of IPT genes [159].…”

Section: Production Of Hormonesmentioning

confidence: 99%

“…Abscisic acid (ABA) is one of the most important stress phytohormones. Salt stress forces plants to produce a large amount of ABA, and an excessive accumulation of ABA exerts detrimental effects on plant growth [161]. Inoculation with Bacillus aryahattai ALT29 and Arthrobacter woluwensis ALT43 significantly reduced the endogenous ABA levels of soybeans under salt stress [188].…”

Section: Production Of Hormones and Acc Deaminasesmentioning

confidence: 99%

Bacterial Strategies for Improving the Yield, Quality, and Adaptability of Oil Crops

Ma,

Luo,

Chen

et al. 2023

Agriculture

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Oil crops are the second most cultivated economic crop in the world after food crops, and they are an important source of both edible and industrial oil. The growth of oil crops is limited by biotic and abiotic stresses, which hinder their yield and quality. Among all the agronomic measures, plant growth promoting bacteria (PGPB) play a crucial role in improving the yield, quality, and adaptability of oil crops. In this review, we considered the recent research on the sources of beneficial bacteria and their interactions with and influences on host plants, with a focus on summarizing the important roles and molecular mechanisms of PGPB in promoting growth and resisting biotic and abiotic stresses in oil crops. Finally, we outlined the current opportunities and challenges of microbial strategies for the improvement of the yield, quality, and adaptability of oil crops, providing a theoretical basis for the future use of microbial inoculants in these crops.

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Abscisic acid in plants under abiotic stress: crosstalk with major phytohormones

Cited by 62 publications

References 146 publications

The Essential Role of H2S-ABA Crosstalk in Maize Thermotolerance through the ROS-Scavenging System

The Essential Role of H2S-ABA Crosstalk in Maize Thermotolerance through the ROS-Scavenging System

Comprehensive Genomic Analysis of Trihelix Family in Tea Plant (Camellia sinensis) and Their Putative Roles in Osmotic Stress

Bacterial Strategies for Improving the Yield, Quality, and Adaptability of Oil Crops

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