Uptake Properties of Germanium to Vegetable Plants and Its Effect on Seed Germination and on Early Stage Growth

Han, Myung-Ja; Kim, Sungun; Seo, Dong‐Cheol; Cheong, Yong-Hwa; Lee, Do-Jin; Park, Moon-Su; Rim, Yo-Sup; Sohn, Bo-Kyoon; Heo, Ji Hoe; Cho, Ju-Sik

doi:10.5338/kjea.2007.26.3.217

Cited by 9 publications

(4 citation statements)

References 4 publications

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“…Several studies have reported the effect of Ge treatment on plant growth and uptake in barley, rice, lettuce, and ginseng seedlings (Puerner, Siegel, and Siegel 1990;Halperin et al 1995;Lee et al 2005;Yu et al 2005;Han et al 2007;Lim et al 2008;Cheong et al 2009). However, there is still little information on the differential regulation of GeO 2 and Ge-132 on plant growth, including uptake and distribution of Ge in plant tissue.…”

Section: Discussionmentioning

confidence: 96%

Accumulation and Toxicity of Germanium in Cucumber under Different Types of Germaniums

Choi

Seo

Han

et al. 2013

Communications in Soil Science and Plant Analysis

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The effects of germanium dioxide (GeO 2 ) and 2-carboxyethyl germanium sesquioxide (Ge-132) treatments on cucumber (Cucumis sativus L.) growth and Ge accumulation and toxicity were investigated. Accumulated Ge contents in plant treated with GeO 2 were two times greater than that in plants treated with Ge-132. Germanium accumulated primarily in the shoots in the GeO 2 treatments and in the roots in the Ge-132 treatments. In contrast GeO 2 was easily transported from roots to shoots. In cucumber fruit, the range of Ge content in both the GeO 2 and Ge-132 treatments was in the order of stalk > rind > pulp > seeds, suggesting that Ge accumulation was based on distance from xylem. Silicon (Si) content significantly decreased as GeO 2 concentration increased, but there was no difference in Si content in the Ge-132 treatment. Therefore, plant growth and Ge accumulation are affected differently by GeO 2 and Ge-132 treatments, based partly on treatment concentrations.

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Section: Discussionmentioning

confidence: 96%

Accumulation and Toxicity of Germanium in Cucumber under Different Types of Germaniums

Choi

Seo

Han

et al. 2013

Communications in Soil Science and Plant Analysis

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“…Regarding to the effects of Ge on plants, previous studies focused on the accumulation of Ge in medicinal herb or herbaceous plants and tried to find a critical toxicity value of this element (Halperin et al 1995, Yu et al 2005, Han et al 2007, Lim et al 2008, Cheong et al 2009. Previous studies also found Ge could be helpful to scavenge ROS (Munakata et al 1987), but it remains unclear on how Ge influences photosynthetic apparatus, in which ROS generates under high light and environmental stress.…”

Section: Discussionmentioning

confidence: 99%

“…In hydroponically-grown lettuce treated with a low concentration of GeO 2 , Ge was taken up by roots and barely moved to shoots. Furthermore, with all types of Ge treatment, plants showed no changes in their phenotype of leaf shape and color, including necrosis or chlorosis (Han et al 2007).…”

Section: Introductionmentioning

confidence: 94%

“…---Ge exists in all biomaterials including plants and animals (Rosenberg 2009, Sparks et al 2011. A few studies have reported the effects of Ge on plant growth and mineral nutrition uptake in barley (Halperin et al 1995), rice (Seo et al 1995), lettuce (Cheong et al 2009), Chinese cabbage (Han et al 2007), and ginseng seedlings (Yu et al 2005). Barley seedlings accumulated Ge in roots and shoots, and the shoots accumulated Ge linearly as an exogenous Ge concentration increased (Halperin et al 1995).…”

Section: Introductionmentioning

confidence: 99%

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Effects of GeO<sub>2</sub> on chlorophyll fluorescence and antioxidant enzymes in apple leaves under strong light

Wang¹,

Wang²,

Zhao³

et al. 2018

Photosynt.

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In this study, we chose apple leaf as plant material and studied effects of GeO 2 on operation of photosynthetic apparatus and antioxidant enzyme activities under strong light. When exogenous GeO 2 concentration was below 5.0 mg L -1 , maximum photochemical quantum yield of PSII and actual quantum yield of PSII photochemistry increased significantly compared with the control under irradiances of 800 and 1,600 μmol(photon) m -2 s -1 . Photosynthetic electron transport chain capacity between Q A -Q B , Q A -PSI acceptor, and Q B -PSI acceptor showed a trend of rising up with 1.0, 2.0, and 5.0 mg(GeO 2 ) L -1 and declining with 10.0 mg(GeO 2 ) L -1 . On the other hand, dissipated energy via both ΔpH and xanthophyll cycle decreased remarkably compared with the control when GeO 2 concentration was below 5.0 mg L -1 . Our results suggested that low concentrations of GeO 2 could alleviate photoinhibition and 5.0 mg(GeO 2 ) L -1 was the most effective. In addition, we found, owing to exogenous GeO 2 treatment, that the main form of this element in apple leaves was organic germanium, which means chemical conversion of germanium happened. The organic germanium might be helpful to allay photoinhibition due to its function of scavenging free radicals and lowering accumulation of reactive oxygen species, which was proven by higher antioxidant enzyme activities.

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Plant Responses to Metalloid Accumulation

Dhir

2020

Metalloids in Plants

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Uptake Properties of Germanium to Vegetable Plants and Its Effect on Seed Germination and on Early Stage Growth

Cited by 9 publications

References 4 publications

Accumulation and Toxicity of Germanium in Cucumber under Different Types of Germaniums

Accumulation and Toxicity of Germanium in Cucumber under Different Types of Germaniums

Effects of GeO<sub>2</sub> on chlorophyll fluorescence and antioxidant enzymes in apple leaves under strong light

Plant Responses to Metalloid Accumulation

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