Protective Role of Silicon (Si) Against Combined Stress of Salinity and Boron (B) Toxicity by Improving Antioxidant Enzymes Activity in Rice

Farooq, Muhammad; Saqib, Zulfiqar Ahmad; Akhtar, Javaid; Bakhat, Hafiz Faiq; Ratnakumar, P.; Dietz, Karl‐Josef

doi:10.1007/s12633-015-9346-z

Cited by 74 publications

(40 citation statements)

References 21 publications

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“…Two well-known enzymatic activity in host is catalase and oxidase enzymatic activities (Zheng et al, 2018). Catalase activity is severally decreased upon the plant exposure to biotic or abiotic stresses (Farooq et al, 2019). The catalase activity was low in the uniconizole treated seedlings of maize till 72 hours which later decreased (Figure 4A-4E).…”

Section: Resultsmentioning

confidence: 99%

Phytohormonal cross-talk modulate Bipolaris sorokiniana (Scc.)interaction with Zea mays

Yousaf

Hussain

Hamayun

et al. 2019

Preprint

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16Besides acting as growth inducing molecule, Gibberellin (GA 3 ) also confers the compatibility 17 of microbial interactions with host. We inoculated 11 days old Z. mays seedlings grown under 18 hydroponic conditions and high GA 3 levels with Bipolaris sorokiniana (BIPOL) at the spore 19 density (SD) of OD 0.6 . The high level of GA 3 negatively affected the growth of the seedlings, 20 accompanied by the high level of stress deducing secondary metabolites (proline, total 21 flavanoids, phenylpropanoids, and glucosinolides). Moreover, high level of GA 3 produced a 22 hypersensitive response (HR) in the seedlings. The HR developed cross talks with IAA and 23 trans-zeatins and triggered higher production of hypersensitive inducing biomolecules. The 24 other HR co-related biological processes were demonstrated by high phytoalexins level and 25 high protease activities. Such activities ultimately inhibited the colonization of BIPOL on the 26 roots of maize seedlings. The products of the genes expressed at high GA 3 also conferred the 27 deterrence of BIPOL colonization at SD = OD 0.6 . Intriguingly, when we inhibited GA 3 28 biosynthesis in the seedlings with aerially sprayed uniconizole, prior to BIPOL treatment, the 29 BIPOL colonized and subsequently promoted the seedling growth. This low level of GA 3 30 after BIPOL treatment checked the high level of secondary metabolites and hypersensitivity 31 inducing molecules. The results, thus suggested that the aforementioned processes only 32 happened in the BIPOL at SD (OD 0.6 ), whereas the SD at lower levels (OD 0.2 or OD 0.4 ) 33 neither promoted the growth of uniconizole pre-treated seedlings nor produced HR in control 34 seedlings of maize plant.35

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Section: Resultsmentioning

confidence: 99%

Phytohormonal cross-talk modulate Bipolaris sorokiniana (Scc.)interaction with Zea mays

Yousaf

Hussain

Hamayun

et al. 2019

Preprint

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“…During the last decade, researchers have assessed the effects of Si under excess boron (B), mainly in soil-grown cereals [ 64 , 65 , 66 , 67 ]. A recent study showed that Si application alleviated the harmful effects of B deficiency and toxicity in cotton by different modes of Si application [ 68 ].…”

Section: Si and Micro-nutrient Deficiency Or Heavy Metal Toxicitymentioning

confidence: 99%

The Regulatory Role of Silicon in Mitigating Plant Nutritional Stresses

Ali¹,

Réthoré²,

Yvin³

et al. 2020

Plants

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It has been long recognized that silicon (Si) plays important roles in plant productivity by improving mineral nutrition deficiencies. Despite the fact that Si is considered as ‘quasi–essential’, the positive effect of Si has mostly been described in resistance to biotic and tolerance to abiotic stresses. During the last decade, much effort has been aimed at linking the positive effects of Si under nutrient deficiency or heavy metal toxicity (HM). These studies highlight the positive effect of Si on biomass production, by maintaining photosynthetic machinery, decreasing transpiration rate and stomatal conductance, and regulating uptake and root to shoot translocation of nutrients as well as reducing oxidative stress. The mechanisms of these inputs and the processes driving the alterations in plant adaptation to nutritional stress are, however, largely unknown. In this review, we focus on the interaction of Si and macronutrient (MaN) deficiencies or micro-nutrient (MiN) deficiency, summarizing the current knowledge in numerous research fields that can improve our understanding of the mechanisms underpinning this cross-talk. To this end, we discuss the gap in Si nutrition and propose a working model to explain the responses of individual MaN or MiN disorders and their mutual responses to Si supplementation.

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“…In soil medium, plants take up and accumulate Si ranging from (1–100 g Si·kg −1 DW) through different modes, uptake, and transport processes [ 181 ]. Si is taken up in plants as orthosilicic acid (H 4 SiO 4 ), and rice is considered as typical Si accumulator (100 g Si·kg −1 DW) [ 182 ]. Si is still to be considered as an essential element, although the beneficial impact of Si concerning multiple stress tolerances in plants has been wildly recognized [ 183 ].…”

Section: Role Of Mineral Nutrition For Mitigating Aluminum Toxicitmentioning

confidence: 99%

Importance of Mineral Nutrition for Mitigating Aluminum Toxicity in Plants on Acidic Soils: Current Status and Opportunities

Rahman

Lee

et al. 2018

IJMS

218

111

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Aluminum (Al) toxicity is one of the major limitations that inhibit plant growth and development in acidic soils. In acidic soils (pH < 5.0), phototoxic-aluminum (Al3+) rapidly inhibits root growth, and subsequently affects water and nutrient uptake in plants. This review updates the existing knowledge concerning the role of mineral nutrition for alleviating Al toxicity in plants to acid soils. Here, we explored phosphorus (P) is more beneficial in plants under P-deficient, and Al toxic conditions. Exogenous P addition increased root respiration, plant growth, chlorophyll content, and dry matter yield. Calcium (Ca) amendment (liming) is effective for correcting soil acidity, and for alleviating Al toxicity. Magnesium (Mg) is able to prevent Al migration through the cytosolic plasma membrane in root tips. Sulfur (S) is recognized as a versatile element that alleviates several metals toxicity including Al. Moreover, silicon (Si), and other components such as industrial byproducts, hormones, organic acids, polyamines, biofertilizers, and biochars played promising roles for mitigating Al toxicity in plants. Furthermore, this review provides a comprehensive understanding of several new methods and low-cost effective strategies relevant to the exogenous application of mineral nutrition on Al toxicity mitigation. This information would be effective for further improvement of crop plants in acid soils.

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Protective Role of Silicon (Si) Against Combined Stress of Salinity and Boron (B) Toxicity by Improving Antioxidant Enzymes Activity in Rice

Cited by 74 publications

References 21 publications

Phytohormonal cross-talk modulate Bipolaris sorokiniana (Scc.)interaction with Zea mays

Phytohormonal cross-talk modulate Bipolaris sorokiniana (Scc.)interaction with Zea mays

The Regulatory Role of Silicon in Mitigating Plant Nutritional Stresses

Importance of Mineral Nutrition for Mitigating Aluminum Toxicity in Plants on Acidic Soils: Current Status and Opportunities

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