Effects of exogenous abscisic acid on the growth and cadmium accumulation of lettuce under cadmium-stress conditions

Tang, Yi; Wang, Liming; Xie, Yongdong; Yu, Xin; Li, Huanxiu; Lin, Lijin; Liao, Ming’an; Wang, Zhihui; Sun, Guochao; Wang, Xun; Liang, Dong; Xia, Hui; Tu, Lihua

doi:10.1080/03067319.2019.1639686

Cited by 38 publications

(27 citation statements)

References 51 publications

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“…This observation could be attributed to the fact that exogenous ABA limited the uptake of Cd 2+ by the roots and also restricted the root-to-leaf transfer of the absorbed Cd 2+ , maintaining the Cd 2+ levels in the leaves within acceptable limits. Our results are similar to the findings of Tang and co-authors who reported that different concentrations of ABA improved the growth and decreased the content of Cd 2+ in lettuce plants (Tang et al, 2019).…”

Section: Discussionsupporting

confidence: 92%

“…6). A similar observation was made when lettuce plants were grown in nutrient solution supplemented with 10 mg L −1 Cd 2+ (Tang et al, 2019). However, exogenous application of ABA to the 100 µM CdCl 2 treated plants decreased the contents of Cd 2+ in the leaves and roots of the plants compared with the sole 100 µM CdCl 2 treated plants (Fig.…”

Section: Discussionsupporting

confidence: 79%

“…The effect of exogenous ABA application on lettuce under drought stress (Al-Muhairi et al, 2015), Phaseolus vulgaris L. and Sesbania cannabina under salt stress (Shevyakova et al, 2013;Ren, Kong & Xie, 2018) and pea seedlings under Cd 2+ stress (Lu et al, 2018) have been reported. Recently, the effect of different concentrations of ABA on growth and Cd 2+ accumulation in lettuce was reported (Tang et al, 2019). In the current study, however, we investigated the effect of ABA (10 µg L −1 ) on the biochemical, physiological and leaf safety of a Cd 2+ -sensitive lettuce genotype under Cd 2+ stress.…”

Section: Introductionmentioning

confidence: 91%

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Foliar application of abscisic acid mitigates cadmium stress and increases food safety of cadmium-sensitive lettuce (Lactuca sativa L.) genotype

Dawuda

Liao

et al. 2020

PeerJ

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Cadmium (Cd2 +) is among the toxic non-essential heavy metals that adversely affect plants metabolic processes and the safety of produce. However, plant hormones can improve plant’s tolerance to various stresses. This study investigated the effect of exogenous abscisic acid (ABA) on the biochemical and physiological processes and food safety of cadmium (Cd2 +)-sensitive lettuce genotype (Lüsu). Seedlings were subjected to five treatments: [(i) Control (untreated plants), (ii) 100 µM CdCl2, (iii) 100 µM CdCl2+10 µg L−1 ABA (iv) 10 µg L−1 ABA, and (v) 0.01 g L−1 ABA-inhibitor (fluridone)] for fourteen days in hydroponic system. The 100 µM CdCl2 increased the contents of hydrogen peroxide (H2O2) and malondialdehyde (MDA), decreased photosynthesis and plant biomass. Moreover, it decreased the contents of essential nutrients (except copper) in the leaves but increased the contents of toxic Cd2 + in the leaves and roots of the plants. Foliar application of fluridone (0.01 g L−1) also caused oxidative stress by increasing the contents of H2O2 and MDA. It also decreased the contents of nutrient elements in the leaves of the plants. However, exogenous ABA (10 µg L−1) mitigated the Cd2 +-induced stress, increased antioxidant enzymes activities, photosynthesis and plant biomass under CdCl2 treatment. Remarkably, exogenous ABA increased the contents of essential nutrient elements but decreased the Cd2 + content in leaves under the CdCl2 treatment. Our results have demonstrated that foliar application of ABA mitigates Cd2 + stress and increases the nutritional quality and food safety of Cd2 +-sensitive lettuce genotype under CdCl2 treatment.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 91%

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Foliar application of abscisic acid mitigates cadmium stress and increases food safety of cadmium-sensitive lettuce (Lactuca sativa L.) genotype

Dawuda

Liao

et al. 2020

PeerJ

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“…However, the induced SnRK2.4 is ABA-independent but probably influences ROS accumulation (Kulik et al, 2012). Cd absorption was also observed to be inhibited in lettuce (Lactuca sativa) and oilseed rape (Brassica napus), however, whether this is a conserved route is not clear (Shen et al, 2017;Tang et al, 2020). On the other hand, Cd absorption was not affected by ABA in rice, Indian mustard, and A. helleri (Salt et al, 1995;Hsu and Kao, 2003;Zhao et al, 2006), which could be due to a different Cd uptake system in these species.…”

Section: Slsitmentioning

confidence: 99%

“…For Cd stress, pre-treatment with ABA dramatically reduced Cd accumulation in the leaves of Indian mustard ( Salt et al, 1995 ) and less Cd accumulation was detected in parallel with a reduced transpiration rate and stomatal closure with up to 100 μM ABA treatment in rice and Arabidopsis helleri ( Salt et al, 1995 ; Hsu and Kao, 2003 ; Zhao et al, 2006 ; Uraguchi et al, 2009 ). Besides, involvement of transpiration capacity in the ABA-induced reduction of Cd allocation from roots to leaves is yet to be validated in lettuce ( Lactuca sativa ) and field mustard ( Brassica campestris ) ( Shen et al, 2017 ; Tang et al, 2020 ).…”

Section: Aba Alters Toxic Metals and Metalloids Distribution Between mentioning

confidence: 99%

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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Hormonal Regulation of Heavy Metal Toxicity and Tolerance in Crop Plants

Kido,

de Andrade Luz,

da Silva

et al. 2023

Heavy Metal Toxicity and Tolerance in Plants

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Effects of exogenous abscisic acid on the growth and cadmium accumulation of lettuce under cadmium-stress conditions

Cited by 38 publications

References 51 publications

Foliar application of abscisic acid mitigates cadmium stress and increases food safety of cadmium-sensitive lettuce (Lactuca sativa L.) genotype

Foliar application of abscisic acid mitigates cadmium stress and increases food safety of cadmium-sensitive lettuce (Lactuca sativa L.) genotype

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

Hormonal Regulation of Heavy Metal Toxicity and Tolerance in Crop Plants

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