Protective effect of silicon on phenolic biosynthesis and ultraviolet spectral stress in rice crop

Goto, Masakazu; Ehara, Hiroshi; Karita, Shyuichi; Takabe, Keiji; Ogawa, N.; Yamada, Yutaka; Ogawa, Satoshi; Yahaya, M. S.; Morita, Osamu

doi:10.1016/s0168-9452(02)00419-3

Cited by 88 publications

(41 citation statements)

References 29 publications

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“…A maior parte dos estudos que comprovam os benefícios do Si na agricultura foi realizada com espécies herbáceas de rápido crescimento (Goto et al, 2003;RomeroAranda et al, 2006;Hattori et al, 2007;Côté-Beaulieu et al, 2009;Savvas et al, 2009;Hashemi et al, 2010;Zanão Júnior et al, 2010). O hábito de crescimentolento em espécies arbóreas, como o cafeeiro, ou rápido em espécies herbáceas, como o arroz -parece ser um fator adicional que altera a resposta ao Si, sendo o benefício mais evidente nas espécies anuais.…”

Section: Discussionunclassified

“…O Si é um elemento que confere às plantas maior resistência a estresses bióticos e abióticos (Goto et al, 2003;Romero-Aranda et al, 2006;Hattori et al, 2007;Côté-Beaulieu et al, 2009;Savvas et al, 2009;Hashemi et al, 2010), assim como melhora o manejo fitossanitário de cafeeiros (Reis et al, 2008) e plantas de trigo (Zanão Júnior et al, 2010).…”

Section: Introductionunclassified

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O alto teor de silício no solo inibe o crescimento radicular de cafeeiros sem afetar as trocas gasosas foliares

Ribeiro

Silva²,

Ramos³

et al. 2011

Rev. Bras. Ciênc. Solo

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RESUMOO benefício do silício (Si) no crescimento de plantas cultivadas tem sido observado em vários trabalhos. O objetivo deste estudo foi avaliar os efeitos de Si no crescimento de mudas de cafeeiro cv. Catuaí Vermelho. O experimento foi conduzido em vasos, e as plantas crescidas em casa de vegetação, sem restrição hídrica. A partição de matéria seca entre raízes, caule e folhas, os teores de nutrientes e Si nos tecidos vegetais e no solo e as trocas gasosas foliares foram avaliados em plantas submetidas a doses de silicato de cálcio correspondentes a 0 (controle), 1,5 e 6 Mg ha -1 . O delineamento experimental foi em blocos casualizados, com três tratamentos e 3, 4 ou 18 repetições, dependendo da variável considerada. Cada parcela experimental era composta por uma planta. Em relação à altura e matéria seca total, as plantas de todos os tratamentos apresentaram desenvolvimento satisfatório, com incrementos diários compatíveis com o esperado em cafeeiros bem nutridos. Os tratamentos com silicato de cálcio causaram aumento nos teores de Ca no solo e na planta e de Si no solo. Considerando que o único nutriente alterado pelos tratamentos foi o Ca e que os teores observados na planta podem ser considerados não prejudiciais, as respostas descritas a seguir são consequência do alto teor de Si no solo. Após 130 dias do início do experimento, as plantas tratadas com 6 Mg ha -1 de silicato de cálcio apresentaram menor acúmulo de matéria seca nas raízes e aumento da relação entre a matéria seca da parte (1) Recebido para publicação em julho de 2010 e aprovado em março de 2011.

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Section: Discussionunclassified

Section: Introductionunclassified

O alto teor de silício no solo inibe o crescimento radicular de cafeeiros sem afetar as trocas gasosas foliares

Ribeiro

Silva²,

Ramos³

et al. 2011

Rev. Bras. Ciênc. Solo

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“…Pei et al (2010) found that silicon improved the growth of wheat plants by stimulating antioxidant defense system when wheat plants were under short term water stress conditions.In saline soils, silicon increased the activity of antioxidant enzymes in wheat (Saqib et al 2008) and decreased plasma membrane permeability similarly silicon increased root activity which allowed better absorption of nutrients in barley (Liang et al 2003). Goto et al (2003) showed that rice plants treated with silicon absorbed less radiation than untreated plants. Ma and Takahashi (2002) reported that rice grew better after exposure to gamma rays if it had been previously fertilized with silicon.…”

Section: Silicon Imparts Positive Effect On Antioxidant Defense Systemmentioning

confidence: 97%

Alleviation of abiotic and biotic stresses in plants by silicon supplementation

2016

Sci. Agric

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Silicon has been considered as beneficial element for the plants. The supplementation of silicon as nutrient to the plants may play a significant role which includes increase in crop growth and yield, improvement of leaf exposure to light, decreased susceptibility to pathogens and pests and amelioration to abiotic and biotic stresses. The most significant effect of silicon on plants, besides improving their fitness in adverse environmental conditions and increasing agricultural productivity of plants is the restriction of pest attack and prevention of diseases. Unfortunately the significance of silicon nutrition in crop production and mitigation of abiotic and biotic stresses remains unexplored. Hence there is an urgent need to use silicon fertilizers for improvement in crop production. The understanding of the beneficial effects of silicon is important to improve crop productivity as it may enhance plant nutritional value for a growing world population.

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“…The accumulation of flavonoids and other UV-B absorbing phenolic compounds is the first line of the UV-B defence, limiting the penetration of UV-B within the tissue (Mackerness 2000;Hollósy 2002;Goto et al 2003). According to some studies (Agati & Tattini 2010;Fini et al 2011) the functional role of the well-documented UV-B mediated accumulation of phenylpropanoids and flavonoids may be primarily to increase ROS scavenging activity.…”

Section: Discussionmentioning

confidence: 99%

“…According to some studies (Agati & Tattini 2010;Fini et al 2011) the functional role of the well-documented UV-B mediated accumulation of phenylpropanoids and flavonoids may be primarily to increase ROS scavenging activity. Goto et al (2003) reported that under UV-B radiation, Si may be associated with phenolic biosynthesis. In soybean seedlings, the content of soluble phenols increased with UV-B radiation treatment and decreased with Si application (Shen et al 2010b).…”

Section: Discussionmentioning

confidence: 99%

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

2014

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Enhanced 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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Protective effect of silicon on phenolic biosynthesis and ultraviolet spectral stress in rice crop

Cited by 88 publications

References 29 publications

O alto teor de silício no solo inibe o crescimento radicular de cafeeiros sem afetar as trocas gasosas foliares

O alto teor de silício no solo inibe o crescimento radicular de cafeeiros sem afetar as trocas gasosas foliares

Alleviation of abiotic and biotic stresses in plants by silicon supplementation

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

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