Exogenous spermidine alleviates the adverse effects of aluminum toxicity on photosystem II through improved antioxidant system and endogenous polyamine contents

Jiang, Dexing; Hou, Junjie; Gao, Wenwen; Tong, Xin; Li, Meng; Chu, Xiao; Chen, Guoxiang

doi:10.1016/j.ecoenv.2020.111265

Cited by 54 publications

(25 citation statements)

References 58 publications

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“…Leaf tissues of 0.5 g were homogenized in an ice bath in 5 mL of 65 mM phosphate buffer (pH 7.8) and centrifuged at 10,000 rpm for 15 min at 4 °C. The superoxide anion (O 2 − ) was measured by monitoring nitrite formation from hydroxylamine following the method of Jiang et al [ 37 ]. The mixture contained 200 μL supernatant, 750 μL phosphate buffer solution (65 mM, pH 7.8), 50 μL hydroxylamine hydrochloride (10 mM), 1 mL sulfanilamide (17 mM), and 1.0 mL α-naphthylamine (7 mM).…”

Section: Methodsmentioning

confidence: 99%

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RETRACTED: Formation of Proto-Kranz in C3 Rice Induced by Spike-Stalk Injection Method

Jiang

Wang

Zhang

et al. 2021

IJMS

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Introduction of C4 photosynthetic traits into C3 crops is an important strategy for improving photosynthetic capacity and productivity. Here, we report the research results of a variant line of sorghum–rice (SR) plant with big panicle and high spikelet density by introducing sorghum genome DNA into rice by spike-stalk injection. The whole-genome resequencing showed that a few sorghum genes could be integrated into the rice genome. Gene expression was confirmed for two C4 photosynthetic enzymes containing pyruvate, orthophosphate dikinase and phosphoenolpyruvate carboxykinase. Exogenous sorghum DNA integration induced a series of key traits associated with the C4 pathway called “proto-Kranz” anatomy, including leaf thickness, bundle sheath number and size, and chloroplast size in bundle sheath cells. Significantly, transgenic plants exhibited enhanced photosynthetic capacity resulting from both photosynthetic CO2-concentrating effect and improved energy balance, which led to an increase in carbohydrate levels and productivity. Furthermore, such rice plant exhibited delayed leaf senescence. In summary, this study provides a proof for the feasibility of inducing the transition from C3 leaf anatomy to proto-Kranz by spike-stalk injection to achieve efficient photosynthesis and increase productivity.

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Section: Methodsmentioning

confidence: 99%

“…The absorbance was measured at 530 nm, and a standard curve with NO 2 − was used to estimate the production rate of O 2 − . Hydrogen peroxide (H 2 O 2 ) was detected following the method of Jiang et al [ 37 ]. The mixture contained 200 μL supernatant and 2 mL 20% H 2 SO 4 ( v / v ) with 0.1% TiCl 4 ( v / v ).…”

Section: Methodsmentioning

confidence: 99%

RETRACTED: Formation of Proto-Kranz in C3 Rice Induced by Spike-Stalk Injection Method

Jiang

Wang

Zhang

et al. 2021

IJMS

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“…More specifically, bound Spd and Spm forms were detected in PSII and LHCII (light-harvesting antenna complex) [ 73 , 74 ]. There are no studies on halophytes, but the exogenous Spd application in some glycophytes showed stabilization of PSII, improving photosynthetic performance and the antioxidant system in chloroplasts under saline conditions [ 74 , 75 , 76 ]. We consider that similar effects can occur in P. coronopus when Spd is applied.…”

Section: Discussionmentioning

confidence: 99%

Plant Growth Regulators Application Enhance Tolerance to Salinity and Benefit the Halophyte Plantago coronopus in Saline Agriculture

Bueno

Cordovilla

2021

Plants

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Climate change, soil salinisation and desertification, intensive agriculture and the poor quality of irrigation water all create serious problems for the agriculture that supplies the world with food. Halophyte cultivation could constitute an alternative to glycophytic cultures and help resolve these issues. Plantago coronopus can be used in biosaline agriculture as it tolerates salt concentrations of 100 mM NaCl. To increase the salt tolerance of this plant, plant growth regulators such as polyamine spermidine, salicylic acid, gibberellins, cytokinins, and auxins were added in a hydroponic culture before the irrigation of NaCl (200 mM). In 45-day-old plants, dry weight, water content, osmolyte (sorbitol), antioxidants (phenols, flavonoids), polyamines (putrescine, spermidine, spermine (free, bound, and conjugated forms)) and ethylene were determined. In non-saline conditions, all plant regulators improved growth while in plants treated with salt, spermidine application was the most effective in improving growth, osmolyte accumulation (43%) and an increase of antioxidants (24%) in P. coronopus. The pretreatments that increase the sorbitol content, endogenous amines (bound spermine fraction), phenols and flavonoids may be the most effective in protecting to P. coronopus against stress and, therefore, could contribute to improving the tolerance to salinity and increase nutritional quality of P. coronopus.

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“…Putrescine could reduce the Al content in the CW by inhibiting the production of ethylene, therefore, alleviating the inhibition of the root growth in wheat and rice [181,182]. Likewise, the application of spermidine alleviates the adverse effects of Al toxicity by improving the antioxidant system, as has been demonstrated in rice and mung bean [183,184]. These findings show that the application of polyamines or improvement of endogenous polyamine content is an effective strategy for plants to adapt to acidic soil.…”

Section: Small Molecules To Alleviate Al Toxicitymentioning

confidence: 60%

Recent Advances in Understanding Mechanisms of Plant Tolerance and Response to Aluminum Toxicity

et al. 2021

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Aluminum (Al) toxicity is a major environmental stress that inhibits plant growth and development. There has been impressive progress in recent years that has greatly increased our understanding of the nature of Al toxicity and its mechanisms of tolerance. This review describes the transcription factors (TFs) and plant hormones involved in the adaptation to Al stress. In particular, it discusses strategies to confer plant resistance to Al stress, such as transgenic breeding, as well as small molecules and plant growth-promoting rhizobacteria (PGPRs) to alleviate Al toxicity. This paper provides a theoretical basis for the enhancement of plant production in acidic soils.

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Exogenous spermidine alleviates the adverse effects of aluminum toxicity on photosystem II through improved antioxidant system and endogenous polyamine contents

Cited by 54 publications

References 58 publications

RETRACTED: Formation of Proto-Kranz in C3 Rice Induced by Spike-Stalk Injection Method

RETRACTED: Formation of Proto-Kranz in C3 Rice Induced by Spike-Stalk Injection Method

Plant Growth Regulators Application Enhance Tolerance to Salinity and Benefit the Halophyte Plantago coronopus in Saline Agriculture

Recent Advances in Understanding Mechanisms of Plant Tolerance and Response to Aluminum Toxicity

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