Exogenous Putrescine Alleviates Drought Stress by Altering Reactive Oxygen Species Scavenging and Biosynthesis of Polyamines in the Seedlings of Cabernet Sauvignon

Zhao, Jiaqi; Wang, Xuefei; Pan, Xingbo; Jiang, Qianqian; Xi, Zhumei

doi:10.3389/fpls.2021.767992

Cited by 35 publications

(21 citation statements)

References 60 publications

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“…Since these pigments are responsible for light interception and electron transfer excitation processes, their degradation decreased the photochemical activity of PSII (F v /F m ). The decreased PSII activity leads to increased excitation energy, resulting in excessive energy, ROS production, and lipid peroxidation (Santos et al, 2021;Zhao et al, 2021), thus inhibiting NADPH oxidation and electron transfer to the reaction centers (Xiong et al, 2021).…”

Section: Resultsmentioning

confidence: 99%

Salicylic acid alleviates the water stress on photochemical apparatus and quality of Schinus terebinthifolia seedlings

Santos

Lima

Saracho

et al. 2022

Rev. bras. eng. agríc. ambient.

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Water deficit adversely affects photosynthetic pigment synthesis, photochemical processes, and seedling quality. Exogenous foliar application of salicylic acid (SA) is hypothesized to contribute to photochemical regulation and increase stress tolerance. This study aimed to evaluate the effect of SA in alleviating the effects of water deficit stress on the photosynthetic photochemical activities and quality of Schinus terebinthifolia Raddi. seedlings. The seedlings were subjected to four regimes of water deficit: 0, 4, 8, and 12 days of water restriction (DWR), associated with the application of four concentrations of SA: 0, 50, 100, and 200 mg L-1 (via foliar spray; 10 mL per plant) during 48 days. Growth of S. terebinthifolia seedlings was adversely affected by longer duration of water restriction in absence of SA treatment. However, application of 200 mg L-1 of SA increased photosynthetic pigment levels, photochemical quantum efficiency in photosystem II, and absorbed energy conversion efficiency in seedlings under 12 DWR. The seedling quality was better at 7 and 12 DWR when associated with application of 100 and 200 mg L-1 SA, respectively. The exogenous application of SA contributed positively to pigment concentration and photochemical stability of photosynthesis, and it improved the quality of S. terebinthifolia seedlings subjected to long water restriction periods.

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Section: Resultsmentioning

confidence: 99%

Salicylic acid alleviates the water stress on photochemical apparatus and quality of Schinus terebinthifolia seedlings

Santos

Lima

Saracho

et al. 2022

Rev. bras. eng. agríc. ambient.

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“…Drought stress usually causes water deficit in plant, which is embodied in height decreased, leaf wilting, number and area of leaves changed ( Yang X. Y. et al., 2021 ). At the physiological and biochemical level, the balance of ROS homeostasis in plant was broken down due to the excessive accumulation ( Zhao J. Q. et al., 2021 ). Furthermore, the increasing reactive oxygen free radicals make plant cells suffer oxidative stress ( Guo et al., 2018 ; Yang X. Y. et al., 2021 ).…”

Section: Erfs Regulate Plant Responses To Various Abiotic Stressesmentioning

confidence: 99%

ERF subfamily transcription factors and their function in plant responses to abiotic stresses

Zhang

et al. 2022

Front. Plant Sci.

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Ethylene Responsive Factor (ERF) subfamily comprise the largest number of proteins in the plant AP2/ERF superfamily, and have been most extensively studied on the biological functions. Members of this subfamily have been proven to regulate plant resistances to various abiotic stresses, such as drought, salinity, chilling and some other adversities. Under these stresses, ERFs are usually activated by mitogen-activated protein kinase induced phosphorylation or escape from ubiquitin-ligase enzymes, and then form complex with nucleic proteins before binding to cis-element in promoter regions of stress responsive genes. In this review, we will discuss the phylogenetic relationships among the ERF subfamily proteins, summarize molecular mechanism how the transcriptional activity of ERFs been regulated and how ERFs of different subgroup regulate the transcription of stress responsive genes, such as high-affinity K+ transporter gene PalHKT1;2, reactive oxygen species related genes LcLTP, LcPrx, and LcRP, flavonoids synthesis related genes FtF3H and LhMYBSPLATTER, etc. Though increasing researches demonstrate that ERFs are involved in various abiotic stresses, very few interact proteins and target genes of them have been comprehensively annotated. Hence, future research prospects are described on the mechanisms of how stress signals been transited to ERFs and how ERFs regulate the transcriptional expression of stress responsive genes.

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“…Likewise, under salt stress, Pas might counteract drought stress by controlling Ca 2+ and K + flux, thereby causing stomata to close [105]. Exogenous putrescine can mitigate drought by reducing oxidative stress and increasing the synthesis of endogenous PAs [106]. In the osmotic stress response, PAs likely facilitate and enhance the synthesis of osmoprotectants [107].…”

Section: Can Polyamines Ameliorate the Damaging Effect Of Stress?mentioning

confidence: 99%

Male Fertility under Environmental Stress: Do Polyamines Act as Pollen Tube Growth Protectants?

Aloisi

Piccini

Cai

et al. 2022

IJMS

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Although pollen structure and morphology evolved toward the optimization of stability and fertilization efficiency, its performance is affected by harsh environmental conditions, e.g., heat, cold, drought, pollutants, and other stressors. These phenomena are expected to increase in the coming years in relation to predicted environmental scenarios, contributing to a rapid increase in the interest of the scientific community in understanding the molecular and physiological responses implemented by male gametophyte to accomplish reproduction. Here, after a brief introduction summarizing the main events underlying pollen physiology with a focus on polyamine involvement in its development and germination, we review the main effects that environmental stresses can cause on pollen. We report the most relevant evidence in the literature underlying morphological, cytoskeletal, metabolic and signaling alterations involved in stress perception and response, focusing on the final stage of pollen life, i.e., from when it hydrates, to pollen tube growth and sperm cell transport, with these being the most sensitive to environmental changes. Finally, we hypothesize the molecular mechanisms through which polyamines, well-known molecules involved in plant development, stress response and adaptation, can exert a protective action against environmental stresses in pollen by decoding the essential steps and the intersection between polyamines and pollen tube growth mechanisms.

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Exogenous Putrescine Alleviates Drought Stress by Altering Reactive Oxygen Species Scavenging and Biosynthesis of Polyamines in the Seedlings of Cabernet Sauvignon

Cited by 35 publications

References 60 publications

Salicylic acid alleviates the water stress on photochemical apparatus and quality of Schinus terebinthifolia seedlings

Salicylic acid alleviates the water stress on photochemical apparatus and quality of Schinus terebinthifolia seedlings

ERF subfamily transcription factors and their function in plant responses to abiotic stresses

Male Fertility under Environmental Stress: Do Polyamines Act as Pollen Tube Growth Protectants?

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