Drought Effects on Membrane Lipids and Photosynthetic Activity in Different Peanut Cultivars

Lauriano, J.A.; Lidon, Fernando C.; Carvalho, Cláudio Antonio Ferraz de; Campos, Paula Scotti; Matos, M. do Céu

doi:10.1023/a:1026775319916

Cited by 56 publications

(34 citation statements)

References 34 publications

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“…At stage R5 in both years (DOY 220 in 2011 and 227 in 2012), the F v /F m3 was higher for rainfed than irrigated plants. Even though MI was useful for drought-tolerance selection in other studies (Bajji et al, 2002;Lauriano et al, 2000;Clavel et al, 2006), here the relationship between MI and pod yield was weak (data not shown), and genotypes showed significant differences for this characteristic only at late stages of development (data not shown). Because of this, Reynolds et al (1994, p. 726) concluded: "The use of seedlings is favorable logistically since the conditions of plant acclimation can be controlled, while this is not possible in the field.…”

Section: Membrane Injurymentioning

confidence: 61%

“…In 2012, MI was relatively low compared to 2011 and similar across water regimes, with averages ranging from 11 to 15%. Even though MI was useful for drought-tolerance selection in other studies (Bajji et al, 2002;Lauriano et al, 2000;Clavel et al, 2006), here the relationship between MI and pod yield was weak (data not shown), and genotypes showed significant differences for this characteristic only at late stages of development (data not shown). Because of this, MI may have little value for field screening for water deficit tolerance of the virginia-type peanut; rather, use of seedlings under controlled conditions could be more informative, as suggested by Reynolds et al (1994).…”

Section: Membrane Injurymentioning

confidence: 61%

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Differential Physiological and Metabolic Responses to Drought Stress of Peanut Cultivars and Breeding Lines

et al. 2014

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The Virginia–Carolina region is the most important peanut (Arachis hypogaea L.) production region for the large‐seeded, virginia‐type peanut in the United States, but 85% of the production is rainfed and predisposed to water deficit stress. The mechanisms virginia‐type peanut uses in response to drought stress are poorly understood. We evaluated several physiological and metabolic characteristics and their relationship with pod yield in eight virginia‐type cultivars and advanced breeding lines in rainfed and irrigated field trials in 2011 and 2012. Each year, evaluations were performed at three sampling dates in conjunction with growth stages beginning flower, pod, and seed. Significant (p ≤ 0.05) genotypic variation in membrane injury, chlorophyll fluorescence (Fv/Fm ratio), and relative levels of metabolites and lipid‐derived fatty acids was observed in response to water regime and sampling time. In general, in both years, the Fv/Fm ratio, organic acids, and fatty acids decreased in rainfed vs. irrigated plants, while the relative levels of sugar and cyclic polyols increased. Because higher levels of organic acids and lower levels of sugars were associated (p ≤ 0.05) with higher pod yield, we conclude that natural stress responses rather than adaptive mechanisms to drought prevailed for the genotypes used in this study. Based on its minimal changes in the Fv/Fm ratio and metabolite levels of the rainfed vs. irrigated plants, line SPT 06‐07 showed improved tolerance to water deficit stress; this line can be an important source for drought tolerance improvement of the virginia‐type peanut.

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Section: Membrane Injurymentioning

confidence: 61%

Section: Membrane Injurymentioning

confidence: 61%

Differential Physiological and Metabolic Responses to Drought Stress of Peanut Cultivars and Breeding Lines

et al. 2014

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“…Membrane Injury: During abiotic stress, lipid peroxidation can cause severe membrane injury (MI) and as such, it can be measured to assess the degree of stress in crops including peanuts (Bajji et al, 2002;Blum and Ebercon, 1981;Srinivasan et al, 1996). MI and the Fv/Fm ratio have previously been used in screening peanut genotypes for salt, heat, and drought stress tolerance (Lauriano et al, 2000;Qin et al, 2011;Srinivasan et al, 1996). Peanut seedlings exposed to a 40/35 °C temperature treatment in this study showed on average 18% increased MI compared to control plants (Table 2).…”

Section: Discussionmentioning

confidence: 99%

Heat Stress Related Physiological and Metabolic Traits in Peanut Seedlings

Singh¹,

Balota²,

Collakova³

et al. 2016

Peanut Science

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To maintain high yields under an increasingly hotter climate, high temperature resilient peanut cultivars would have to be developed. Therefore, the mechanisms of plant response to heat need to be understood. The objective of this study was to explore the physiological and metabolic mechanisms developed by virginia-type peanut at early growth stages in response to high temperature stress. Peanut seedlings were exposed to 40/35°C (heat) and 30/25°C (optimum temperature) in a growth chamber. Membrane injury (MI), the Fv/Fm ratio, and several metabolites were evaluated in eight genotypes at four time-points (day 1, 2, 4, and 7) after the heat stress treatment initiation. Even though we were able to highlight some metabolites, e.g., hydroxyproline, galactinol, and unsaturated fatty acid, explaining specific differential physiological (MI) responses in peanut seedlings, overall our data suggested general stress responses rather than adaptive mechanisms to heat. Rather than individual metabolites, a combination of several metabolites better explained (41 to 61%) the MI variation in heat stressed peanut seedlings. The genotype SPT 06 07 exhibited lower MI, increased galactinol, reduced hydroxyproline, and higher saturated vs. unsaturated fatty acid ratio under heat stress compared to other genotypes. SPT 06-07 was also separated from the other genotypes during hierarchical clustering and, based on this and previous fieldwork, SPT 06-07 is proposed as a potential source for heat tolerance improvement of virginia-type peanut.

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“…Altered lipid biosynthesis and specific fatty acid reduced the impairment of cell membranes under drought stress [21]. Several studies showed that lipid metabolism in different plants was modified by drought stress [22][23][24][25]. In the moss Atrichum androgynum, the contents of phosphoglyceride and monogalactosyldiacylglycerol (MGDG) were reduced significantly, but the content of triacylglycerols (TAGs) was increased significantly under drought stress [25].…”

Section: The Effect Of Exogenous Aba On Chlorophyll Metabolism and Phmentioning

confidence: 99%

Exogenous abscisic acid induces on lipid and flavonoid metabolism of tea plant under drought stress

Gai

Wang

Ding

et al. 2019

Preprint

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Background: Abscisic acid (ABA) is an important phytohormone responsible for activating drought resistance, but the regulation mechanism of exogenous ABA on tea plants under drought stress was rarely reported. Results: The results showed that the exogenous ABA significantly induced the metabolic pathways of tea leaves under drought stress, including the chlorophyll synthesis, photosynthesis, sucrose and starch metabolism, TCA cycle, glycolysis, lipid metabolism and flavonoids biosynthesis. In which, the exogenous ABA could up-regulated the genes related to lipid metabolism and flavonoid biosynthesis, including LPCAT , ALDH, FLS, CHI, DFR, and down-regulated the genes related to lipid metabolism and flavonoid biosynthesis, including FATB, EKI, DGK , PAL, 4CL . The exogenous ABA could also increase the contents of flavone, anthocyanins, flavonol, isoflavone of tea leaves under drought stress, including delphinidin 3-O-glucosidewere, cyanidin 3-O-rutinoside, kaempferitrin, sakuranetin, prunetin, kaempferol, and decrease the contents of glycerophospholipids, glycerolipids and fatty acids of tea leaves under drought stress, including LysoPE 14:0, LysoPE 16:0, LysoPE 18:0, LysoPE 18:1, LysoPC 15:1 and LysoPC 16:0. And there were strong correlations between the genes and metabolites. Conclusions: The results suggested that the exogenous ABA could alleviate the damages of tea leaves under drought stress through inducing the expressions of the genes and altering the contents of metabolites in response to drought stress. The data also provide a good foundation for further research on the roles of the genes and metabolites in response to ABA.

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Drought Effects on Membrane Lipids and Photosynthetic Activity in Different Peanut Cultivars

Cited by 56 publications

References 34 publications

Differential Physiological and Metabolic Responses to Drought Stress of Peanut Cultivars and Breeding Lines

Differential Physiological and Metabolic Responses to Drought Stress of Peanut Cultivars and Breeding Lines

Heat Stress Related Physiological and Metabolic Traits in Peanut Seedlings

Exogenous abscisic acid induces on lipid and flavonoid metabolism of tea plant under drought stress

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