Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars

Mauad, Munir; Crusciol, Carlos Alexandre Costa; Nascente, Adriano Stephan; Filho, Hélio Grassi; Lima, Giuseppina Pace Pereira

doi:10.5935/1806-6690.20160064

Cited by 80 publications

(41 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, silicon fertilization reduced proline levels, that is considered a biochemical indicator of stress and due to its capacity of osmotic regulation (Gunes et al 2008;Mauad et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Stress Oxidative Evaluation on SiK®-Supplemented Castanea sativa Mill. Plants Growing Under High Temperature

Carneiro-Carvalho

Anjos

Pinto

et al. 2020

J Soil Sci Plant Nutr

View full text Add to dashboard Cite

The protective effect of silicon (Si) against environmental stress has been observed in many crops. The objective of this work was to evaluate the impact of SiK® (potassium silicate) fertilization on the resilience capacity of chestnut plants growing under high air temperature conditions and their recovery capacity after a turnover to adequate temperatures. Castanea sativa plants were supplied with 0 mM, 5 mM, 7.5 mM, and 10 mM SiK® and exposed sequentially to 25°C, 32°C, and 25°C for 1 month each. Data suggested that silicon are involved in increasing the heat tolerance of chestnut plants by reducing the oxidative damage and improving the antioxidant enzymes and metabolites. Under heat stress (32°C), there was an increase in the catalase, ascorbate peroxidase, and peroxidase activities, as well as in the phenol content of supplemented plants, which consequently reduced the electrolyte leakage, lipid peroxidation, and hydrogen peroxide content. Additionally, a lower proline content was measured inside the leaves' tissues of Si-treated plants. Besides the resilience against heat stress, after exposure to 32°C, the recovery was also quick.

show abstract

Section: Introductionmentioning

confidence: 99%

Stress Oxidative Evaluation on SiK®-Supplemented Castanea sativa Mill. Plants Growing Under High Temperature

Carneiro-Carvalho

Anjos

Pinto

et al. 2020

J Soil Sci Plant Nutr

View full text Add to dashboard Cite

show abstract

“…Silicon (Si) has a vital role in agriculture, providing many benefits to the plants through biochemical and physiological processes, by promoting a decrease of environmental stresses. Furthermore, Si is considered by many authors as an antistress agent that can reduce transpiration, cell membrane damage, and increase leaf relative water content in the plants (Mauad et al 2016). Many studies show that Si application in crops under water stress also enhances the activity of antioxidant enzymes and the contents of ascorbic acid and glutathione by improving the capacity of water absorption and, consequently, the root hydraulic conductance (Shi et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Ecophysiological study of SiK impact on Castanea sativa Mill. tolerance to drought stress

Carneiro-Carvalho¹,

Anjos²,

Lousada³

et al. 2020

Photosynt.

View full text Add to dashboard Cite

Drought is an abiotic stress that may be aggravated by climate changes with increasingly warmer and drier summers. This is a severe problem in the chestnut crop in Portugal due to its need for water during this time, which is essential for good formation and development of the fruit. Si fertilization is referenced by several authors as important in the tolerance of plants under drought. The experiments were carried out in the field trial and chestnuts were fertilized with 0, 5, 7.5, and 10 mM potassium silicate (SiK), which was applied to the soil and to the leaves and exposed to a non-irrigation and an irrigation phase during the summer. Results indicate that Si fertilization increased the relative water content and water potential, while the transpiration rate, stomatal conductance, and stomatal density were reduced under deficit irrigation in Si-treated plants (10 mM SiK). Moreover, the Si induces a higher photosynthetic activity and vessel frequency with a smaller diameter, promoting a higher relative hydraulic conductivity and a lower vulnerability to cavitation. This work suggests that Si can be used as a potential source to induce drought tolerance in chestnuts.

show abstract

“…Some studies indicate that silicon (Si) application is able to avoid the damage of plant when grown under drought stress condition (Sacala, 2009;Boecharnikova & Benes, 2011;Son et al, 2011;Mauad et al, 2016;Hajiboland et al, 2017). Unfortunately, many soils in Indonesia are considered lack of available silicon that has positive impact for plant by stimulate nutrient uptake and plant photosynthesis, decrease susceptibility to disease and insect damage, alleviate water and various mineral stresses and decrease the toxic effects of aluminum and heavy metals (Currie & Perry, 2007;Heckman, 2013;Ng et al, 2016;Sakr, 2016;Khalifa et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Solubilization of silicate from quartz mineral by potential silicate solubilizing bacteria (Pelarutan silika asal mineral kuarsa oleh bakteri pelarut silika potensial )

Santi¹,

Goenadi²

2017

View full text Add to dashboard Cite

AbstrakSilika (Si) AbstractSilicon (Si) is the second most abundant in the soil varies from 50 to 400 g Si per kg of soil. Silicon has positive influence on the plant resistance to various abiotic and biotic stressors such as salinity, drought, heavy metal toxicities and diseases. Although Si is abundant in soil, most of its sources are not available for plant uptake due to low solubility of Si compounds in soil. To improve plant-available Si in the soil, silicate solubilizing bacteria (SSB) are potentially important in solubilizing insoluble forms of silicate. The objectives of this study were to determine: (i) silicate solubilizing activity of Burkholderia cenocepacia KTG, Aeromonas punctata RJM3020, and B. vietnamiensis ZEO3 on magnesium trisilicate and quartz, (ii) biochemical characteristics of SSB, and (iii) solubilization of silicate, Ca, and Mg from quarts by SSB activity. A laboratory study was conducted at Microbiology and Environment Laboratory, the Indonesian Research Institute for Biotechnology and Bioindustry, Bogor, in 2016. All SSB were grown on Bunt and Rovira media containing 0.25% magnesium trisilicate or quartz as substrate, respectively. Silica solubilizing activities by SSB were determined by using inductively coupled plasma-atomic emission spectrometry while organic acid concentration in the culture were measured by using highperformance liquid chromatography (HPLC

show abstract

Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars

Cited by 80 publications

References 28 publications

Stress Oxidative Evaluation on SiK®-Supplemented Castanea sativa Mill. Plants Growing Under High Temperature

Stress Oxidative Evaluation on SiK®-Supplemented Castanea sativa Mill. Plants Growing Under High Temperature

Ecophysiological study of SiK impact on Castanea sativa Mill. tolerance to drought stress

Solubilization of silicate from quartz mineral by potential silicate solubilizing bacteria (Pelarutan silika asal mineral kuarsa oleh bakteri pelarut silika potensial )

Contact Info

Product

Resources

About