Effects of boron toxicity on root and leaf anatomy in two Citrus species differing in boron tolerance

Huang, Jing-Hao; Cai, Z. Y.; Wen, Shusheng; Guo, Peng; Ye, Xin; Lin, Guoxing; Chen, Li‐Song

doi:10.1007/s00468-014-1075-1

Cited by 63 publications

(62 citation statements)

References 46 publications

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“…In relation to E and C i , these variables presented not significant changes, corroborating with the study by Huang et al (2014) who also did not found modification in E of Citrus sinensis under B excess. Papadakis et al (2004) studying the B toxicity effects in Citrus plants observed decreased in P N /C i , similar with results detected in this research.…”

Section: Ros Frequently Induces Increases In Elsupporting

confidence: 89%

Oxidant and antioxidant compounds, gas exchange and growth of young Schizolobium parahyba var. amazonicum plants under high boron and calcium concentrations

Lobato

2018

Emir J Food Agric

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Boron (B) and Calcium (Ca) unbalance in plants during early stages can generate oxidative stress and consequently to interfere negatively on growth and quality of seedlings. This study aims to evaluate the gas exchange and measure the biochemical responses, responding how high concentrations of B and Ca can affect the growth and quality of young Schizolobium parahyba plants. The experimental design used was completely randomised with four treatments [1 -25 µM B + 5 mM Ca (control); 2 -25 µM B + 50 mM Ca (Ca high); 3-250 µM B + 5 mM Ca (B high) and 4 -250 µM B + 50 mM Ca (B and Ca high)]. Negative impacts on gas exchange, photosynthetic pigments and total glutathione were obtained, besides increases in hydrogen peroxide and electrolyte leakage were verified in plants treated with B and Ca high, indicating oxidative stress. Thus, application 250 µM B combined with 50 mM Ca promoted disorders in plant metabolism, decreasing the growth and quality of young Schizolobium parahyba plants. Callegari, et al.: Boron and calcium in Schizolobium parahyba plants Emir. J. Food Agric • Vol 29 • Issue 12 • 2017 995 Fig 4. Ascorbate in leaf (A), ascorbate in root (B), glutathione total in leaf (C) and glutathione total in root (D) in young S. parahyba plants subjected to different of B and Ca supplies. Bars with different letters indicate significant differences from the Skott-Knott test (P<0.05). Bars represent the mean values and error bars represent the standard deviations from five repetition.

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Section: Ros Frequently Induces Increases In Elsupporting

confidence: 89%

Oxidant and antioxidant compounds, gas exchange and growth of young Schizolobium parahyba var. amazonicum plants under high boron and calcium concentrations

Lobato

2018

Emir J Food Agric

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“…The main morpho-anatomical changes promoted by B excess encompasses modifications at root level, such as alteration of root meristems (Choi et al 2007), thickening of hypodermis and deposition of suberin in cortical cells (Ghanati et al 2002), root lignification, which likely represent an attempt by the plant to reduce the intake of B and limit the toxicity to root apparatus. At stem level, B excess can promote the development of cork and collenchyma cells with increased cell wall thickness in loquat (Papadakis et al 2018) and thickening in the cell wall of phloem cells in citrus (Huang et al 2014), mechanisms which reduce the amount of free B and represent a further detoxifying mechanism by storing excessive B in tissues where it could be less harmful. Addressing the effect in leaves, few reports have investigated the morpho-anatomical changes that are provoked by B excess.…”

Section: Physiological and Biochemical Responses To B Excessmentioning

confidence: 99%

Boron toxicity in higher plants: an update

Landi

Margaritopoulou

Papadakis

et al. 2019

Planta

169

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“…Boric acid, while affects growth, did not induce apoptosis in breast cancer cells [7]. Studies in flora and insects already pointed to autophagy elevation in boric acid toxicity [9,10], which was behind the reasoning that autophagy might responsible of BA mechanism of action.…”

Section: Discussionmentioning

confidence: 99%

“…The mechanism of its lethal effects did not involve apoptosis, but it is suspected to be through histone deacetylase inhibition [7,8]. Furthermore, boric acid toxicity was reported to be associated with autophagy in plants and insects [9,10]. While on the other hand, several studies linked histone deacetylase inhibitors (HDACi) with an increased autophagy [11].…”

Section: Introductionmentioning

confidence: 99%

High concentrations of boric acid induce autophagy in cancer cell lines

Al‐Ali

González‐Sarmiento

2017

Preprint

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Background/AimBoric acid (BA) is thought to have anticancer effects, but only a handful of studies tackled this subject. Though a very common compound, little is known about its therapeutic value, mechanisms and effective doses. This study investigates into its therapeutic value and autophagy as a possible mechanism. Materials and MethodsWe evaluated the potency of BA treatment in seven different cell lines. We hypothesized that autophagy is involved in the mechanism of BA toxicity in tumor cells based on observations in plants, insects and cancer cell lines. Changes in autophagy-related proteins were measured after BA treatment. Finally, we suspected that blockage of autophagy would increase the effectiveness of BA treatment and enable the use of smaller doses. ResultsOur results demonstrate that all studied cell lines did not suffer mortality in low to medium doses of BA (up to 5mM). However, a high dose (over 25mM) could inflict significant death in all cell lines. Those high doses caused P62/SQSTM1 consumption and LC3II-B accumulation after 3 days of treatment. Using small doses of BA in combination with autophagy blockage did not improve cytotoxicity in lung cancer cell lines. ConclusionWe conclude that high concentrations of BA affect autophagy in short-term treatments. Not enough data is available about BA toxicity, so BA use as cancer treatment can be possible if new toxicity studies are performed.

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Effects of boron toxicity on root and leaf anatomy in two Citrus species differing in boron tolerance

Cited by 63 publications

References 46 publications

Oxidant and antioxidant compounds, gas exchange and growth of young Schizolobium parahyba var. amazonicum plants under high boron and calcium concentrations

Oxidant and antioxidant compounds, gas exchange and growth of young Schizolobium parahyba var. amazonicum plants under high boron and calcium concentrations

Boron toxicity in higher plants: an update

High concentrations of boric acid induce autophagy in cancer cell lines

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