Zinc (Zn) deficiency was first identified as a field problem in rice in 1966 ().It is now widely recognized as one of the most widespread soil constraints in rice production, with as much as 50% of all lowland rice soils prone to Zn deficiency (Sillanpaa, 1990, White and Zasoski, 1999).In a survey of 14 sites in the Philippines, Van Breemen et al. Aerobic rice is currently bred by crossing lowland with upland rice genotypes, for growth in an aerobic cultivation system, which is saving water and producing high yields. Annual Report for 1971. Soils particularly prone to zinc deficiency include: • Neutral and calcareous soils containing large quantities of bicarbonate. Agron. 119–146 (1967). Despite these differences, the two varieties appeared equally susceptible to zinc deficiency during the first four weeks of growth under field conditions. 9, 31–65 (1957). The International Rice Research Institute, Los Baños, Philippines, p. 43–46 (1972). H. D. Chapman, Univ. Since much of the Philippines is derived from lime-stones and coral reefs, zinc deficiency of rice ought to occur in the Philippines. Y. L. N ENE (1) was the first to show that a foliar application of zinc sulfate corrects a disorder of the rice plant long known as Khaira disease in North-Central India. Symptoms appear between two to four weeks after transplanting. Studies on two varieties differing in susceptibility to zinc deficiency. Soil Manure, Japan 40, 415–519 (1969) (In Japanese). Causes of Zinc Deficiency . This article explains everything you need to know about zinc, its functions, benefits, the risk of deficiency and potential side effects. Phytopath Soc. Proc. Widespread occurrence of zinc deficiency and response to application of Zn by rice plants in different rice growing countries in the world have been reported (Yoshida et al., 1973; Giordano and Mortvedt, 1974; Kang and Okoro, 1976). Incidence of the deficiency appears more closely related to zinc availability than to total zinc content of the soil, and spontaneous recoveries of affected crops are common. Proc. Several studies have investigated how rice plants respond to Zn deficiency and examined the differences between Zn-efficient (ZE) and Zn-inefficient (ZI) genotypes. J. Zinc (Zn) deficiency is the most prevalent micronutrient disorder in rice and leads to delayed development and decreased yield. Zn deficiency resulted in a marked decrease in shoot dry matter production of most genotypes after 28 days of growth. 26–47 (1948). Zinc availibility decreases after flooding. Zn deficiency results in brown blotches and streaks 2 to 3 weeks after transplanting, as well as stunting, reduced tillering, and low productivity of rice … Plant and Soil 16, 347–360 (1962). Soil factors associated with the deficiency, Plant and Soil In the Mineral Nutrition of the Rice Plant. Reasons 33, 49–54, (1969). 2007a). With ongoing deficiency the complete leaf blade turns bronze to brown. Zinc (Zn) deficiency is one of the most widespread soil constraints affecting rice productivity, but the molecular mechanisms underlying the regulation of Zn deficiency response is still limited. Soil Sci. Sta., No. Using a chelated Zn source allows any of the Zn that does not contact rice leaves to be mobile in the soil and move downward towards the rice roots where it can also be actively taken up by the plant. Moreover many genes involved in starch synthesis/transport were up-regulated by Zn deficiency in rice … 10.1007/s11104-007-9368-4 ; Wissuwa M., Ismail A. M., Yanagihara S. (2006). Duncan, O. W., Correction of zinc deficiency in linseed on the Darling Downs, Queensland. Sc.) Healthier Rice Varieties High-iron and high-zinc rice Iron and Zinc deficiencies Globally, more than 1.6 billion people are anemic. Results of the present study indicate that transient peaks in the concentration of bicarbonate and possibly of organic acids in the soil solution following soil submergence may induce temporary zinc deficiencies. Yoshida, S. and Tanaka, A., Zinc deficiency of the rice plant in calcareous soils. Formerly a Research Scholar of the International Rice Research Institute, Philippines. Zinc has been particularly missing in the rice of Bangladesh. Could using a new type of flour in cooking help tackle this deficiency? Its occurrence has increased with the introduction of modern varieties, crop intensification, and increased Zn removal. It means many people who depend on rice as a staple food are effectively being starved of essential micronutrients such as iron, zinc and pro-vitamin A.. Nutritionists call it "hidden hunger." Common symptoms include increased rates of diarrhea. Many studies have identified Zn efficient rice genotypes, but causal mechanisms for … What is Zinc Deficiency? Zinc deficiency is the most widespread micronutrient disorder in rice. However at pH 4.5 the same concentrations of acetic acid reduced uptake by more than 90 per cent. Zinc deficiency is a widespread problem in Sub-Saharan Africa. In this review the diagnosis and correction of Zn deficiency in several important crops in a wide range of soils has been discussed. Zinc nutrition also modulates drought induced growth and antioxidant dysfunction in plant and mitigates dehydration induced damages and improves post stress rehydration responses in plant [30,36]. Studies have suggested a simple way to overcome zinc deficiency in humans is by applications of zinc to crops like rice. 19, 446–448 (1955). Water Pollut. The International Rice Research Institute, Los Baños, Philippines, p. 134–137, 155–157 (1970). - Volume 97 Issue 1 - Rosalind S. Gibson, Mari Skar Manger, Woravimol Krittaphol, Tippawan Pongcharoen, Sueppong Gowachirapant, Karl B. Bailey, Pattanee Winichagoon Severe yield losses are threatening food security, caused by abiotic stresses such as zinc deficiency, a widespread micronutrient disorder … Zn deficiency resulted in a marked decrease in shoot dry matter production of most genotypes after 28 days of growth. concept— a product delivering the desired levels of iron and zinc biofortification in milled rice. But most cannot in Bangladesh. While severe zinc deficiency is rare in industrialised nations, the World Health Organization estimates that nearly half the world's popular suffers from zinc deficiency. Adv. Shiratori, K., Suzuki, T. and Miyoshi, H., (On a disease of rice plant similar to “Akagare” occurring in paddy field soil dredged from Tone River.) Subscription will auto renew annually. Tanaka, A., Shimono, K. and Ishizuka, Y., (Zinc deficiency as the cause of the “Akagare” in the rice plants). Zinc (Zn) is an indispensable element for rice growth. Soviet Soil Sci. Proc. This article explains everything you need to know about zinc, its functions, benefits, the risk of deficiency and potential side effects. The high dependence on rice and the lack of diversity in the diet have led to nutritional and health problems, particularly micronutrient deficiencies. Zinc deficiency is more common among older people who live in institutions and people who are homebound. Pratt, P. F., Carbonate and bicarbonate In Diagnotic Criteria for Plants and Soils (H. D. Chapman Ed., Univ. Soc. Rice grain zinc concentrations as affected by genotype, native soil-zinc availability, and zinc fertilization. PubMed Google Scholar. What is the role of Zinc (Zn) in plants. (Ed. Forno, D. A., Asher, C. J. and Yoshida, S., Zinc deficiency in rice. Zinc (Zn) deficiency is one of the leading nutrient disorders in rice (Oryza sativa). Caroll, M. D. and Loneragan, J. F., Response of plant species to concentrations of zinc in solution I. Sc.) It can also be found in plant sources like tofu, hemp seeds, lentils, shiitake mushrooms, tahini, pumpkin seeds, wild rice, cashew, soybeans, and chia seeds. Lindsay, W. I. and Norwell, W. A., Equilibrium relationships of Zn+, Fe3+, Ca+ and H+ with EDTA and DTPA in soils. Background: Zinc (Zn) deficiency is one of the most widespread soil constraints affecting rice productivity, but the molecular mechanisms underlying the regulation of Zn deficiency response is still limited. Soil analysis has proven to be an Until very recently zinc deficiency of the rice plant had not been shown to occur in the field. Formation of Zn deficient clay soil was used in our screening the same true... Poor communities has led to the soil raised bicarbonate concentrations substantially and organic acid concentrations slightly 10! And Albertson, O. W., Correction of Zn deficient clay soil was used in our.. John Hopkins Press, Baltimore, Maryland ) pp that we are storing and accessing cookies your! 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