Silicon Uptake Mechanism and its Multidimensional Influences on Stress Mitigation in Rice (Oryza sativa L.)
نویسندگان
چکیده
Silicon (Si) is the second most abundant element in earth crust constituting 27.7 per cent. The beneficial effects of Si includes mitigation various forms abiotic and biotic stresses. Rice (Oryza sativa), a typical accumulator, takes up actively form silicic acid. There are three transporters involved uptake viz, LSi1, LSi2 LSi3. Influx transporter (LSi1) acid from soil solution mediates its transport upto exodermal layer root system, followed by efflux (LSi2), which transports it across aerenchyma. Further movement to aerial parts plant mediated another influx transporter, LSi6 finally gets deposited as silica parts. present well deposition plants helps mitigating stresses rice. application during drought stress prevents compression xylem vessels thereby resulting reduction transpiration rate. Sufficient supply stabilises culms serves decrease risk lodging. sensitive metal toxicities like Iron (Fe), Manganese (Mn) Aluminium (Al). complexation with these ions decreases their translocation rate reduces toxic effects. Heavy toxicity due accumulation cadmium (Cd) arsenic (As) can be alleviated through supplementation Si. also ameliorates salt decreasing Na root-to-shoot translocation. provides mechanical barrier against pathogens pests. supplied produce phenolics phytoalexins response fungal infection cuticle-Si double act defence mechanism preventing key mechanisms Si-mediated alleviation rice include stimulation antioxidants, Si, immobilization compartmentation within plants.
منابع مشابه
Genetic dissection of silicon uptake ability in rice (Oryza sativa L.).
The adequate presence of silicon (Si) in rice plants can enhance their yield and improve their tolerance to various biotic and abiotic stresses. In this study Si uptake abilities were compared between the japonica rice cultivar (cv.) Kinmaze and the indica rice cv. DV85 under three Si concentrations (0.16, 0.4, and 1.6mM) at different time points from 1 to 12h. The results showed that the pheno...
متن کاملCorrelation Studies in Rice (Oryza sativa L.)
Seventy genotypes of rice (Oryza sativa L.) were evaluated during Kharif 2012 to study the nature and extent of correlation among yield and yield attributing characters, days to 50 per cent flowering, days to maturity, number of effective tillers per plant, plant height, panicle length, number of grains per panicle, 1000-grain weight, grain yield per plant, kernel length, kernel breadth and L/B...
متن کاملHierarchical additive effects on heterosis in rice (Oryza sativa L.)
Exploitation of heterosis in crops has contributed greatly to improvement in global food and energy production. In spite of the pervasive importance of heterosis, a complete understanding of its mechanisms has remained elusive. In this study, a small test-crossed rice population was constructed to investigate the formation mechanism of heterosis for 13 traits. The results of the relative mid-pa...
متن کاملSelenium in soil inhibits mercury uptake and translocation in rice (Oryza sativa L.).
A great number of studies have confirmed that mercury-selenium (Hg-Se) antagonism is a widespread phenomenon in microorganisms, fish, poultry, humans, and other mammals. However, by comparison, little attention has been paid to plants. To investigate the influence of Se on the uptake and translocation of methylHg/inorganic Hg (MeHg/IHg) in the rice-soil system, we determined the levels of Se, I...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Plant and Soil Science
سال: 2023
ISSN: ['2320-7035']
DOI: https://doi.org/10.9734/ijpss/2023/v35i42793