Androsterone-induced molecular and physiological changes in maize seedlings in response to chilling stress

Erdal, Serkan

doi:10.1016/j.plaphy.2012.04.016

Cited by 73 publications

(55 citation statements)

References 44 publications

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“…In our study, we have found that Chl a, Chl b, total chlorophyll and carotenoid amounts decreased in pepino due to chilling stress ( Figs 1, 2). This decrease in chlorophyll content due to the chilling stress effects may be originated from destruction of chlorophyll pigments and increase of chlorophyllase activity as stated by Erdal [9]. It was shown in stress groups pre-treated with ascorbic acid in the 5 th day, that Chl a and Chl a/Chl b levels were higher than in the 10 th day (Figs 1, 3).…”

Section: Discussionmentioning

confidence: 68%

“…Kaur et al [19] reported that chlorophyll content in chickpea leaves exposed to chilling stress decreased, compared to the control. Erdal [9] determined decreased chlorophyll and carotenoid amounts in corn plants which were exposed to chilling stress. In our study, we have found that Chl a, Chl b, total chlorophyll and carotenoid amounts decreased in pepino due to chilling stress ( Figs 1, 2).…”

Section: Discussionmentioning

confidence: 99%

“…Lipid peroxidation in biological membranes is an important symptom of oxidative stress in plants [20]. It was determined experimentally in plants exposed to chilling stress that; there is an increase in malondialdehyde (MDA) content which is the final product of membrane polyunsaturated fatty acid oxidation [9,22].…”

Section: Introductionmentioning

confidence: 99%

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Effects of ascorbic acid on some physiological changes of pepino (Solanum muricatumAit.) under chilling stress

Sivaci¹,

Kaya²,

Duman³

2014

Acta Biologica Hungarica

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In this study, the changes caused by chilling stress on some physiological parameters of pepino (Solanum muricatum Ait.) plant and the effects of ascorbic acid (100 mM) applied exogenously on these changes were examined. For this purpose, the photosynthetic pigments (chlorophyll a, chlorophyll b, total chlorophylls and carotenoids), ascorbic acid, total phenolic compounds, malondialdehyde and proline contents in leaves of pepino taken on 5 th and 10 th days were determined. As a result of chilling stress, it was found that while the photosynthetic pigments and proline contents decreased in pepino leaves, the ascorbic acid, total phenolic compounds and malondialdehyde contents increased. In plants which were subjected to pre-treatment of ascorbic acid on the 10 th day of stress, ascorbic acid and proline contents increased while a decrease was observed in malondialdehyde content, compared to stress group without pre-treated. This study may be important for explaining resistance induced by treatment of exogenous ascorbic acid in pepino exposed to chilling stress.

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Section: Discussionmentioning

confidence: 68%

Section: Discussionmentioning

confidence: 99%

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Effects of ascorbic acid on some physiological changes of pepino (Solanum muricatumAit.) under chilling stress

Sivaci¹,

Kaya²,

Duman³

2014

Acta Biologica Hungarica

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“…AN supplementation activated mechanisms that lead to reduction of frost damage of seedling leaves. Another androgen (androsterone) stimulated resistance to cold in maize plants, among others, by decreasing the membrane damage (also measured by electrolyte leakage) (Erdal 2012a). Improvement of the resistance to stress (for example, drought, salinity) through the application of AN and other androgens has also been reported by Janeczko and others (2012) and Erdal (2012b).…”

Section: Discussionmentioning

confidence: 67%

“…The plants treated with AN had a higher antioxidant enzyme activity and a greater concentration of Fe 3+ on day 15 of cold exposure than the control plants. According to data obtained by Erdal (2012a), another androgen (androsterone) also stimulated resistance to cold in maize plants by activation of the antioxidative system. In conclusion, the AN-induced redox changes in the cells can be one of the factors responsible for higher frost resistance and subsequent acceleration of wheat generative development.…”

Section: Discussionmentioning

confidence: 86%

Biochemical and Physicochemical Background of Mammalian Androgen Activity in Winter Wheat Exposed to Low Temperature

Janeczko

Biesaga‐Kościelniak

Dziurka

et al. 2017

J Plant Growth Regul

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development of wheat. The AN-induced changes in redox homeostasis seemed to be important for processes of acclimation to low temperature and generative induction. AN influenced hormonal balance in wheat and stimulated accumulation among other gibberellins and cytokinins. For example, in aerial part of plants, the content of GA 3 was increased by AN in 12 days of cold by about 30%, whereas the content of cis-zeatin was increased by 65%. AN was absorbed into plant membranes (Langmuir bath studies). The membrane absorption of AN increased the distance between lipid molecules and this may be an important step in the AN-induced enhancement of frost resistance. AN interaction with lipid membranes showed similarity to the interactions of some known regulators stimulating flowering in plants, and thus it may also underlie the acceleration Abstract Understanding of the physiological role of mammalian hormone-androstenedione (AN)-in plants is scant and the mechanisms of its action at a cellular level are practically unknown. The aim of this study was to investigate the physicochemical and biochemical background of AN activity in winter wheat exposed to low temperature. Cold periods are important in the lifecycle of this species as they induce frost resistance and further generative development. Wheat seedlings (control and AN-supplemented) were acclimated 2 weeks in cold and then exposed to frost (−12 °C). AN supplementation reduced frost damages by 30%. Moreover, AN also accelerated generative Electronic supplementary material The online version of this article

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DPS1 regulates cuticle development and leaf senescence in rice

Zafar

Uzair

Khan³

et al. 2021

Food and Energy Security

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Leaves are the primary food‐producing organs for a plant that carry out photosynthesis and contribute to biomass and grain yield. Leaf senescence is a developmentally regulated physiological process but early leaf senescence is known to negatively affect plant yield. The cuticle is an outer waxy protective layer on the leaf surface which protects plants from pathogens attack as well as dehydration. Our understanding of the molecular mechanisms underlying cuticle development and leaf senescence is still immature. The present study reports the role of the DEGENERATED PANICLE AND PARTIAL STERILITY 1 (DPS1) gene encoding a cystathionine β‐synthase (CBS) domain‐containing protein in cuticle development and leaf senescence in rice. The dps1 loss‐of‐function mutant showed leaf senescence phenotype with twisted leaves, significantly reduced chlorophyll content and degenerated chloroplasts characterized by a reduced number of starch granules and an abundance of osmiophilic bodies. Furthermore, dps1 leaves displayed defective cuticle development, reduced wax and cutin compounds, and lower relative water content as compared with wild type. Physiological assays showed significantly higher accumulation of reactive oxygen species (ROS) accompanied by enhanced DNA fragmentation in dps1 leaves, which could be associated with chloroplast degeneration and defective cuticle development. Transcriptome analysis revealed altered expression of several critical genes related to photosynthesis and wax/cutin pathway. This study revealed a crucial role of DPS1 in regulating leaf cuticle development and senescence by affecting the expression of several genes. Thus, a moderate expression of DPS1 is necessary for better plant growth and productivity.

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Androsterone-induced molecular and physiological changes in maize seedlings in response to chilling stress

Cited by 73 publications

References 44 publications

Effects of ascorbic acid on some physiological changes of pepino (Solanum muricatumAit.) under chilling stress

Effects of ascorbic acid on some physiological changes of pepino (Solanum muricatumAit.) under chilling stress

Biochemical and Physicochemical Background of Mammalian Androgen Activity in Winter Wheat Exposed to Low Temperature

DPS1 regulates cuticle development and leaf senescence in rice

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