Exogenous abscisic acid (ABA) promotes cadmium (Cd) accumulation in Sedum alfredii Hance by regulating the expression of Cd stress response genes

Lu, Qinyu; Chen, Shimiao; Li, Yanyan; Fu-hai, Zheng; He, Bing; Gu, Minghong

doi:10.1007/s11356-019-07512-w

Cited by 60 publications

(30 citation statements)

References 81 publications

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“…First of all, the biosynthesis and signaling pathways of ABA are affected by heavy metal stresses. Elevated endogenous ABA content was detected in rice, potato ( Solanum tuberosum ), oilseed rape ( Brassica napus ), Malus hupehensis , Sedum alfredii , and other plants exposed to Cd, partially due to the upregulation of genes for ABA biosynthesis ( Hsu and Kao, 2003 ; Stroiński et al, 2013 ; Yan et al, 2016 ; Shi et al, 2019 ; Zhang W. et al, 2019 ; Lu et al, 2020b ). In rice, the expression levels of OsNCED3 , OsNCED4 , and OsNCED5 were upregulated by Cd ( Tan et al, 2017 ).…”

Section: Aba Alleviates Toxic Metals and Metalloids Stresses In Plantmentioning

confidence: 99%

“…Compared to the wild type, higher root Cd concentration was detected in ABA-deficient Slsit tomato mutant ( Table 1 ) ( Pompeu et al, 2017 ). Application of ABA further enhanced Cd tolerance and accumulation activity in the Cd-hyperaccumulating ecotype (HE) of Sedum alfredii ( Lu et al, 2020b ). Interestingly, elevated levels of endogenous ABA accompanied by up-regulated SaNCED and SaABA2 was observed in the non-hyperaccumulating ecotype (NHE) subjected to Cd treatment compared to those in HE, restricting radial transport of Cd toward root vascular tissues ( Tao et al, 2019 ; Lu et al, 2020b ).…”

Section: Aba Alleviates Toxic Metals and Metalloids Stresses In Plantmentioning

confidence: 99%

“…For instance, the expression of HMA3 , Nramp1 , Nramp3 , and Nramp4 were upregulated in Arabidopsis incubation with ABA-catabolizing bacteria ( Lu et al, 2020a ), but overexpression of MhNCED3 in Arabidopsis inhibited the expression of IRT1 , Nramp1 , and HMA2 , leading to reduced Cd uptake and root-to-shoot translocation ( Zhang W. et al, 2019 ). Application of ABA promotes Cd resistance and mobility from root to shoot in the Cd-hyperaccumulating ecotype (HE) of Sedum alfredii by inducing the transcription of SaHMA2 , SaHMA3 , and SaHMA4 ( Lu et al, 2020b ). Interestingly, more endogenous ABA was generated in the non-hyperaccumulating ecotype (NHE) subjected to Cd treatment and induced the expression of lignin- and suberin-related biosynthetic enzymes in NHE roots to limit Cd radial transport towards the stele as well as accumulation in the shoot ( Tao et al, 2019 ).…”

Section: Aba Alters Toxic Metals and Metalloids Distribution Between mentioning

confidence: 99%

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Evolution of Abscisic Acid Signaling for Stress Responses to Toxic Metals and Metalloids

Deng

Chen

et al. 2020

Front. Plant Sci.

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Toxic heavy metals and metalloids in agricultural ecosystems are crucial factors that limit global crop productivity and food safety. Industrial toxic heavy metals and metalloids such as cadmium, lead, and arsenic have contaminated large areas of arable land in the world and their accumulation in the edible parts of crops is causing serious health risks to humans and animals. Plants have co-evolved with various concentrations of these toxic metals and metalloids in soil and water. Some green plant species have significant innovations in key genes for the adaptation of abiotic stress tolerance pathways that are able to tolerate heavy metals and metalloids. Increasing evidence has demonstrated that phytohormone abscisic acid (ABA) plays a vital role in the alleviation of heavy metal and metalloid stresses in plants. Here, we trace the evolutionary origins of the key gene families connecting ABA signaling with tolerance to heavy metals and metalloids in green plants. We also summarize the molecular and physiological aspects of ABA in the uptake, rootto-shoot translocation, chelation, sequestration, reutilization, and accumulation of key heavy metals and metalloids in plants. The molecular evolution and interaction between the ABA signaling pathway and mechanisms for heavy metal and metalloid tolerance are highlighted in this review. Therefore, we propose that it is promising to manipulate ABA signaling in plant tissues to reduce the uptake and accumulation of toxic heavy metals and metalloids in crops through the application of ABA-producing bacteria or ABA analogues. This may lead to improvements in tolerance of major crops to heavy metals and metalloids.

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Section: Aba Alleviates Toxic Metals and Metalloids Stresses In Plantmentioning

confidence: 99%

Section: Aba Alleviates Toxic Metals and Metalloids Stresses In Plantmentioning

confidence: 99%

Section: Aba Alters Toxic Metals and Metalloids Distribution Between mentioning

confidence: 99%

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Evolution of Abscisic Acid Signaling for Stress Responses to Toxic Metals and Metalloids

Deng

Chen

et al. 2020

Front. Plant Sci.

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“…Studies on the response of plants such as Arabidopsis , Solanum tuberosum , Sedum alfredii , Malus hupehensis to heavy metal Cd have shown that ABA plays a positive role in alleviating the accumulation and toxicity of heavy metals and metalloid compounds ( Stroiński et al, 2013 ; Sheng et al, 2018 ; Han et al, 2019 ; Tao et al, 2019 ; Zhang W. et al, 2019 ). Three major pathways involved in the detoxification of toxic metals can be triggered by ABA, inhibiting the uptake ( Zhang L. et al, 2019 ; Pan et al, 2020 ), altering the translocation from root to shoot ( Pompeu et al, 2017 ; Shi W. G. et al, 2019 ; Hza et al, 2020 ), and promoting the conjugation with chelators ( Lu et al, 2020 ). Hsu and Kao (2008) found that regulation of endogenous ABA biosynthesis can reduce Cd uptake by rice seedlings ( Hsu and Kao, 2008 ).…”

Section: Discussionmentioning

confidence: 99%

Hybridization With an Invasive Plant of Xanthium strumarium Improves the Tolerance of Its Native Congener X. sibiricum to Cadmium

et al. 2021

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Hybridization is one of the important factors influencing the adaptive evolution of invasive plants. According to previous studies, hybridization with an invasive plant reduces the adaptability of its native congener to environment. However, in this study, the hybridization with an invasive plant of Xanthium strumarium (LT) improves the tolerance and accumulation of its native congener Xanthium sibiricum (CR) to cadmium (Cd). Under Cd stress, X. sibiricum♀ × X. strumarium♂ (ZCR) showed higher biomass and Cd accumulation. Compared with CR, ZCR has longer vegetative and reproductive growth time. Moreover, ZCR adopted more reasonable biomass allocation strategy. ZCR increased the proportion of reproductive allocation and ensured its own survival with the increase of Cd stress. Furthermore, ZCR increased the translocation of Cd to aboveground parts and changed the distribution of Cd. A large amount of Cd is stored in senescent leaves and eliminated from the plant when the leaves fall off, which not only reduces the Cd content in the plant, but also reduces the toxicity of Cd in the normal leaves. Transcriptome analysis shows a total of 2055 (1060 up and 995 down) differentially expressed genes (DEGs) were detected in the leaves of Cd-stressed ZCR compared with CR, while only 792 (521 up and 271 down) were detected in X. strumarium♀ × X. sibiricum♂ (ZLT) compared with LT. A large number of DGEs in ZCR and ZLT are involved in abscisic acid (ABA) synthesis and signal transduction. The genes induced by ABA in ZCR, including CNGC5/20, CPK1/28, CML, PTI1-like tyrosine-protein kinase 3, respiratory burst oxidase homolog protein C, and WRKY transcription factor 33 were found differentially expressed compared CR. carotenoid cleavage dioxygenase 4, NCED1/2, phytoene synthase 2, and CYP707A involved in ABA synthesis and decomposition in ZLT were found differentially expressed compared LT. We speculated that ABA played an important role in Cd transportation of hybrids and Cd distribution in senescent and normal leaves. The results demonstrate that hybridization with an invasive plant improves the adaptability of the hybrid to Cd stress and may enhance the extinction risk of native congener in pollution environment.

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“…Our data indicated that there is no direct correlation between changes in PCs and SA or ABA contents in the roots. However, it was found in Sedium alfredii that too high ABA accumulation weakens or even reverses the ABAinduced Cd stress responsive gene expression (Lu et al 2020), which suggest that although ABA has regulatory role in Cdinduced stress responses, higher accumulation of it can shift the metabolic processes into less beneficial direction.…”

Section: Relationship Between Proline Pcs Pas and Plant Hormonesmentioning

confidence: 98%

Molecular background of cadmium tolerance in Rht dwarf wheat mutant is related to a metabolic shift from proline and polyamine to phytochelatin synthesis

Szalai

Tajti

Hamow

et al. 2020

Environ Sci Pollut Res

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Plant height is among the most important agronomic traits influencing crop yield. Wheat lines carrying Rht genes are important in plant breeding due to their both higher yield capacity and better tolerance to certain environmental stresses. However, the effects of dwarf-inducing genes on stress acclimation mechanisms are still poorly understood. Under the present conditions, cadmium stress induced different stress responses and defence mechanisms in the wild-type and dwarf mutant, and the mutant with the Rht-B1c allele exhibited higher tolerance. In the wild type after cadmium treatment, the abscisic acid synthesis increased in the leaves, which in turn might have induced the polyamine and proline metabolisms in the roots. However, in the mutant line, the slight increment in the leaf abscisic acid content accompanied by relatively high salicylic acid accumulation was not sufficient to induce such a great accumulation of proline and putrescine. Although changes in proline and polyamines, especially putrescine, showed similar patterns, the accumulation of these compounds was antagonistically related to the phytochelatin synthesis in the roots of the wild type after cadmium stress. In the dwarf genotype, a favourable metabolic shift from the synthesis of polyamine and proline to that of phytochelatin was responsible for the higher cadmium tolerance observed.

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Exogenous abscisic acid (ABA) promotes cadmium (Cd) accumulation in Sedum alfredii Hance by regulating the expression of Cd stress response genes

Cited by 60 publications

References 81 publications

Evolution of Abscisic Acid Signaling for Stress Responses to Toxic Metals and Metalloids

Evolution of Abscisic Acid Signaling for Stress Responses to Toxic Metals and Metalloids

Hybridization With an Invasive Plant of Xanthium strumarium Improves the Tolerance of Its Native Congener X. sibiricum to Cadmium

Molecular background of cadmium tolerance in Rht dwarf wheat mutant is related to a metabolic shift from proline and polyamine to phytochelatin synthesis

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