Impact of silicon on maize seedlings exposed to short-term UV-B irradiation

AbstractEnhanced UV-B irradiation is one of the most important abiotic stresses that can influence various aspects of plant morphology, biochemistry and physiology. Silicon as a beneficial element can increase the plant’s tolerance against different abiotic stresses, including UV-B stress. In this work, the effect of silicon supplementation on the sensitivity of young maize (Zea mays L.) seedlings exposed to short-term UV-B radiation was studied. The seedlings were grown with 0 or 5 mM silicon in cultivation medium and on the fifth day of cultivation, they were exposed for 15 and 30 min to UV-B (302 nm) radiation. No significant changes in growth and content of assimilation pigments and the chlorophyll a/b ratio were observed in any of tested irradiation periods in control or Si-treated plants. Under UV-B stress, the content of ROS (hydrogen peroxide and superoxide radical) and TBARS increased in control plants. The oxidative status of Si-treated plants was only slightly affected even after 30 min. Phenolic metabolites (total phenols and flavonoids), important for their screening function under radiation stress, slightly increased after UV-B exposure in control plants, however, only flavonoids increased after 30 min in Si-treated plants. The measured parameters indicated that to some extent silicon supplementation contributes to higher UV-B tolerance of maize seedlings.

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Short Term Cardiovascular Effects and Oxidative Status of Calcium and Vitamin D Supplementation of Postmenopausal Hypertensive Blacks Women

Case Medical Research ◽

10.31525/ct1-nct04255992 ◽

2020 ◽

Author(s):

Keyword(s):

Vitamin D ◽

Cardiovascular Effects ◽

Vitamin D Supplementation ◽

Oxidative Status ◽

Short Term

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Alfalfa plant-derived biostimulant stimulate short-term growth of salt stressed Zea mays L. plants

Plant and Soil ◽

10.1007/s11104-012-1335-z ◽

2012 ◽

Vol 364 (1-2) ◽

pp. 145-158 ◽

Cited By ~ 93

Author(s):

Andrea Ertani ◽

Michela Schiavon ◽

Adele Muscolo ◽

Serenella Nardi

Keyword(s):

Zea Mays ◽

Zea Mays L ◽

Short Term ◽

Alfalfa Plant

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Melatonin enhances thermotolerance of maize seedlings (Zea mays L.) by modulating antioxidant defense, methylglyoxal detoxification, and osmoregulation systems

PROTOPLASMA ◽

10.1007/s00709-018-1311-4 ◽

2018 ◽

Vol 256 (2) ◽

pp. 471-490 ◽

Cited By ~ 10

Author(s):

Zhong-Guang Li ◽

Ying Xu ◽

Li-Kang Bai ◽

Shu-Yan Zhang ◽

Yue Wang

Keyword(s):

Zea Mays ◽

Antioxidant Defense ◽

Zea Mays L ◽

Maize Seedlings

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Internal Root Anatomy of Maize Seedlings (Zea mays L.) as Influenced by Temperature and Genotype

Annals of Botany ◽

10.1093/oxfordjournals.aob.a088448 ◽

1992 ◽

Vol 70 (2) ◽

pp. 125-128 ◽

Cited By ~ 9

Author(s):

C. KIEL ◽

P. STAMP

Keyword(s):

Zea Mays ◽

Zea Mays L ◽

Root Anatomy ◽

Maize Seedlings

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Effects of arbuscular mycorrhizal symbiosis on growth, nutrient and metal uptake by maize seedlings (Zea mays L.) grown in soils spiked with Lanthanum and Cadmium

Environmental Pollution ◽

10.1016/j.envpol.2018.06.003 ◽

2018 ◽

Vol 241 ◽

pp. 607-615 ◽

Cited By ~ 19

Author(s):

Qing Chang ◽

Feng-wei Diao ◽

Qi-fan Wang ◽

Liang Pan ◽

Zhen-hua Dang ◽

...

Keyword(s):

Zea Mays ◽

Metal Uptake ◽

Zea Mays L ◽

Arbuscular Mycorrhizal ◽

Arbuscular Mycorrhizal Symbiosis ◽

Mycorrhizal Symbiosis ◽

Maize Seedlings

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Differential expression of leaf proteome of tolerant and susceptible maize (Zea mays L.) genotypes in response to multiple abiotic stresses

Biochemistry and Cell Biology ◽

10.1139/bcb-2018-0338 ◽

2019 ◽

Vol 97 (5) ◽

pp. 581-588

Author(s):

Suphia Rafique

Keyword(s):

Zea Mays L ◽

Stress Conditions ◽

Physiological Status ◽

Maize Seedlings ◽

Tropical Maize ◽

Combined Stress ◽

Two Dimensional Gel Electrophoresis ◽

Maize Genotypes ◽

The Given ◽

Physiological And Biochemical

In the present work, tropical maize genotypes were evaluated for multiple stresses (drought × low-N and waterlogging × low-N) applied simultaneously to 30-day-old maize seedlings. Two-dimensional gel electrophoresis was used to examine the protein changes induced by combined stress, in leaves, of tolerant and susceptible genotypes. Moreover, physiological and biochemical parameters were assessed to understand the physiological status of tolerant and susceptible genotypes under combined stress. The results show that up-regulated proteins of the tolerant genotype have a significant role in activating defense response, restoration of plant growth, and to maintain metabolic homeostasis under stressful conditions. Therefore, they contribute to improve and maintain the state of acclimation of the genotype under stress. Alternatively in the susceptible genotype, the up-regulated proteins are representative biomarkers of stress or are involved in the defense against pathogens and efforts to maintain energy metabolism. Thus, protecting the survival of the genotype under multiple stress conditions. We conclude that depending on the given stress treatment, tolerant and susceptible genotypes differed in stress-enduring approaches. Therefore, the study provides insight to comprehend the response of tolerant and susceptible genotypes under combined stress conditions, which could be valuable for further research and will demonstrate that it is advantageous to select combined stress-tolerant genotypes.

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The Thermoluminescence 'Afterglow' Band as a Sensitive Indicator of Abiotic Stresses in Plants

Zeitschrift für Naturforschung C ◽

10.1515/znc-1999-9-1003 ◽

1999 ◽

Vol 54 (9-10) ◽

pp. 629-633 ◽

Cited By ~ 9

Author(s):

Tibor Janda ◽

Gabriella Szalai ◽

Catherine Giauffret ◽

Emil Páldi ◽

Jean-Marc Ducruet

Keyword(s):

Abiotic Stresses ◽

Red Light ◽

Freezing Temperature ◽

Short Term ◽

Sudden Drop ◽

Stress Indicator ◽

Single Turn ◽

Cold Sensitive ◽

Maize Plants ◽

Turn Over

Single turn-over xenon flashes induce a thermoluminescence (TL) B-band centred near 35 °C. The far-red illumination of leaves at non-freezing temperatures induces a band peaking at around 45 °C (afterglow or AG-band), together with a downshifted B-band peaking between 15 °C and 28 °C. In control, unfrozen wheat plants, the Tmax of the B-band induced after 30 s far-red light at 0 °C was approx. 15-18 °C. In maize plants grown under the same conditions, this far-red-induced downshift was not so strong, since the B-band peaked at 28 - 30 °C. Both a decline in the AG-band and a reversal of the downshift of the B-band were observed after short-term freezing in several plant species. There was usually a sudden drop in the AG-band below a critical freezing temperature. However, while in wheat plants a weak TL emission could be seen between 40-50 °C in frozen samples, in cold-sensitive maize plants this was completely suppressed and only the B-band could be detected. In cold-hardened wheat plants the temperature at which the AG-band was suppressed was lower than in non-hardened plants. Drought and short-term heat stress also affect the AG-band. As the AG-band was found to be more sensitive to several types of stresses than the B-band, it can be used as a sensitive stress indicator. However, the behaviour of the AG-band depends on several factors (for example the age of the leaf, etc.), which must be controlled if different species or varieties are to be compared

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Transcriptome sequencing of an Antarctic microalga, Chlorella sp. (Trebouxiophyceae, Chlorophyta) subjected to short-term ultraviolet radiation stress

Journal of Applied Phycology ◽

10.1007/s10811-017-1124-4 ◽

2017 ◽

Vol 30 (1) ◽

pp. 87-99 ◽

Cited By ~ 14

Author(s):

Sze-Wan Poong ◽

Phaik-Eem Lim ◽

Siew-Moi Phang ◽

Chiew-Yen Wong ◽

Tun-Wen Pai ◽

...

Keyword(s):

Ultraviolet Radiation ◽

Transcriptome Sequencing ◽

Radiation Stress ◽

Short Term ◽

Chlorella Sp

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Effects of Routine Handling on Maize Growth

Functional Plant Biology ◽

10.1071/pp9770857 ◽

1977 ◽

Vol 4 (6) ◽

pp. 857 ◽

Cited By ~ 2

Author(s):

MF Beardsell

Keyword(s):

Zea Mays ◽

Leaf Area ◽

Zea Mays L ◽

Dry Weight ◽

Controlled Environment ◽

Short Term ◽

Total Leaf Area ◽

Reduced Height ◽

Plant Characteristics ◽

Routine Handling

Maize (Zea mays L. cv. XL45) plants were grown from seed in controlled-environment rooms. Twice-daily weighings of the plants and containers for 7 days reduced height, and removing plants from the rooms for two 20-min periods daily for 7 days gave significant reductions in stem and leaf dry weights and total leaf area. Transpiration rates were not affected by either of these treatments. Short-term removal from the rooms (up to 10 min daily) produced no significant reductions in plant characteristics. Measuring leaf lengths daily for 10 days resulted in significant reductions in stem dry weight and plant height. It is suggested that control plants should always be subjected to the same degree of handling as treated plants.

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