Effects of Trinexapac‐Ethyl and Daconil Action (Acibenzolar‐<i>S</i>‐Methyl and Chlorothalonil) on Heat and Drought Tolerance of Creeping Bentgrass

Jespersen, David; Huang, Bingru

doi:10.2135/cropsci2016.05.0377

Cited by 9 publications

(8 citation statements)

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“…A number of metabolic pathways induced by ASM during pathogen attack, including anti-oxidant metabolism, have also been demonstrated to be activated during abiotic stress ( Soylu et al, 2003 ). Several recent studies under field conditions have demonstrated that ASM improved heat and drought tolerance in creeping bentgrass ( Shekoofa et al, 2015 ; Jespersen and Huang, 2016 ), and the improved drought performance of creeping bentgrass was associated with ASM-reduction of transpirational water loss ( Shekoofa et al, 2015 ). The mode of action for ASM regulation of abiotic stress tolerance is still unclear and how it alters metabolic pathways to improve stress tolerance is not well understood.…”

Section: Introductionmentioning

confidence: 99%

Metabolic Effects of Acibenzolar-S-Methyl for Improving Heat or Drought Stress in Creeping Bentgrass

Jespersen

Huang

2017

Front. Plant Sci.

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Acibenzolar-S-methyl (ASM) is a synthetic functional analog of salicylic acid which can induce systemic acquired resistance in plants, but its effects on abiotic stress tolerance is not well known. The objectives of this study were to examine effects of acibenzolar-S-methyl on heat or drought tolerance in creeping bentgrass (Agrostis stolonifera) and to determine major ASM-responsive metabolites and proteins associated with enhanced abiotic stress tolerance. Creeping bentgrass plants (cv. ‘Penncross’) were foliarly sprayed with ASM and were exposed to non-stress (20/15°C day/night), heat stress (35/30°C), or drought conditions (by withholding irrigation) in controlled-environment growth chambers. Exogenous ASM treatment resulted in improved heat or drought tolerance, as demonstrated by higher overall turf quality, relative water content, and chlorophyll content compared to the untreated control. Western blotting revealed that ASM application resulted in up-regulation of ATP synthase, HSP-20, PR-3, and Rubisco in plants exposed to heat stress, and greater accumulation of dehydrin in plants exposed to drought stress. Metabolite profiling identified a number of amino acids, organic acids, and sugars which were differentially accumulated between ASM treated and untreated plants under heat or drought stress, including aspartic acid, glycine, citric acid, malic acid, and the sugars glucose, and fructose. Our results suggested that ASM was effective in improving heat or drought tolerance in creeping bentgrass, mainly through enhancing protein synthesis and metabolite accumulation involved in osmotic adjustment, energy metabolism, and stress signaling.

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Section: Introductionmentioning

confidence: 99%

Metabolic Effects of Acibenzolar-S-Methyl for Improving Heat or Drought Stress in Creeping Bentgrass

Jespersen

Huang

2017

Front. Plant Sci.

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“…Glutamate acid is an important component of several pathways and links amino acid and respiration metabolism together by serving as a precursor of proline and arginine and converting to and from α-ketoglutarate in the TCA cycle [17]. The accumulation of glutamate in leaves of creeping bentgrass (Agrostis stoloniferaand) tall fescue (Festuca arundinacea) has been positively correlated with heat and drought tolerance [18,19]. Arginine is an important precursor of nitric oxide and compounds involved in the synthesis of polyamines, participates in various physiological and biochemical processes of plants, and significantly contributes to plant growth, development, and stress tolerance [20].…”

Section: Discussionmentioning

confidence: 99%

Metabolic and Physiological Regulation of Aspartic Acid-Mediated Enhancement of Heat Stress Tolerance in Perennial Ryegrass

Lei

Rossi

Huang

2022

Plants

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Aspartate is the most critical amino acid in the aspartate metabolic pathway, which is associated with multiple metabolic pathways, such as protein synthesis, nucleotide metabolism, TCA cycle, glycolysis, and hormone biosynthesis. Aspartate also plays an important role in plant resistance to abiotic stress, such as cold stress, drought stress, salt stress or heavy metal stress. This study found that the chlorophyll content and antioxidant active enzyme content (SOD, CAT, POD and APX) of perennial ryegrass treated with 2 mM aspartate were significantly higher than those treated with water under heat stress. The electrolyte leakage rate, MDA content and peroxide levels (O2− and H2O2) of perennial ryegrass treated with aspartate were significantly lower than those of perennial ryegrass treated with water, indicating that exogenous aspartate increases the content of chlorophyll, maintain the integrity of cell membrane system, and enhances SOD-CAT antioxidant pathway to eliminate the oxidative damage caused by ROS in perennial ryegrass under heat stress. Furthermore, exogenous aspartate could enhance the TCA cycle, the metabolism of the amino acids related to the TCA cycle, and pyrimidine metabolism to enhance the heat tolerance of perennial ryegrass.

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“…For example, the accumulation of amino acids, including aspartic acid, glutamic acid, proline, 5‐oxoproline, and valine, has been positively associated with heat or drought stress tolerance in various plant species, such as reported in creeping bentgrass ( Agrostis stolonifera ) and tall fescue ( Festuca arundinacea ) (Jespersen et al, 2017; Li et al, 2016; Yang et al, 2014; Yu et al, 2012). Increased levels of organic acids, such as malic acid, threonic acid, and shikimic acid, have also been found in plants with improved heat tolerance (Du et al, 2011; Jespersen & Huang, 2017; Yu et al, 2012). Although previous studies have shown that NOL is involved in the induction of leaf senescence, the metabolic factors and associated pathways underlying NOL‐mediated regulation of heat‐induced leaf senescence are unknown.…”

Section: Introductionmentioning

confidence: 99%

LpNOL‐knockdown suppression of heat‐induced leaf senescence in perennial ryegrass involving regulation of amino acid and organic acid metabolism

Lei

Rossi

et al. 2021

Physiologia Plantarum

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The nonyellow COLORING 1-like gene (NOL) is known for its roles in accelerating leaf senescence, but the underlying metabolic mechanisms for heat-induced leaf senescence remain unclear. The objectives of this study were to identify metabolites and associated metabolic pathways regulated by knockdown of NOL in perennial ryegrass (Lolium perenne) and to determine the metabolic mechanisms of NOL controlling heat-induced leaf senescence. Wild-type (WT; cv. "Pinnacle") and two lines (Noli-1 and Noli-2) of perennial ryegrass with LpNOL knockdown were exposed to heat stress at 35/33 C (day/night) or nonstress control temperatures at 25/22 C (day/night) for 30 days in growth chambers. Leaf electrolyte leakage, chlorophyll (Chl) content, photochemical efficiency (F v /F m ), and net photosynthetic rate (Pn) were measured as physiological indicators of leaf senescence, while gas chromatography-mass spectrometry was performed to identify metabolites regulated by LpNOL. Knockdown of LpNOL suppressed heat-induced leaf senescence and produced a stay-green phenotype in perennial ryegrass, as manifested by increased Chl content, photochemical efficiency, net photosynthetic rate, and cell membrane stability in Noli-1 and Noli-2. Five metabolites (valine, malic acid, threonic acid, shikimic acid, chlorogenic acid) were uniquely upregulated in LpNOL plants exposed to heat stress, and six metabolites (aspartic acid, glutamic acid, 5-oxoproline, phenylalanine, proline, tartaric acid) exhibited more pronounced increases in their content in LpNOL plants than the WT. LpNOL could regulate heat-induced leaf senescence in perennial ryegrass through metabolic reprogramming in the pathways of respiration, secondary metabolism, antioxidant metabolism, and protein synthesis.

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Effects of Trinexapac‐Ethyl and Daconil Action (Acibenzolar‐S‐Methyl and Chlorothalonil) on Heat and Drought Tolerance of Creeping Bentgrass

Cited by 9 publications

References 50 publications

Metabolic Effects of Acibenzolar-S-Methyl for Improving Heat or Drought Stress in Creeping Bentgrass

Metabolic Effects of Acibenzolar-S-Methyl for Improving Heat or Drought Stress in Creeping Bentgrass

Metabolic and Physiological Regulation of Aspartic Acid-Mediated Enhancement of Heat Stress Tolerance in Perennial Ryegrass

LpNOL‐knockdown suppression of heat‐induced leaf senescence in perennial ryegrass involving regulation of amino acid and organic acid metabolism

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