Regulatory mechanisms underlying the maintenance of homeostasis in Pyropia haitanensis under hypersaline stress conditions

Wang, Wenlei; Chen, Tianxiang; Xing, Lei; Xu, Kai; Xu, Yan; Ji, Dehua; Chen, Changsheng; Xie, Chaotian

doi:10.1016/j.scitotenv.2019.01.214

Cited by 51 publications

(42 citation statements)

References 66 publications

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“…These gene families tend to show phase-specific expression, implying that they may be an adaptive response to the different growth conditions in the heteromorphic life history. For the thallus phase, inhabiting the upper intertidal zone, fluctuating stresses during emersion lead to intracellular over-production of ROS, which would then damage cellular structures and macromolecules 42 . The expanded gene repertoire of the antioxidative system and their upregulation in the thallus phase strongly support the essential roles of these genes in dealing with environmental stresses during emersion.…”

Section: Discussionmentioning

confidence: 99%

Pyropia yezoensis genome reveals diverse mechanisms of carbon acquisition in the intertidal environment

Wang

et al. 2020

Nat Commun

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Changes in atmospheric CO 2 concentration have played a central role in algal and plant adaptation and evolution. The commercially important red algal genus, Pyropia (Bangiales) appears to have responded to inorganic carbon (C i ) availability by evolving alternating heteromorphic generations that occupy distinct habitats. The leafy gametophyte inhabits the intertidal zone that undergoes frequent emersion, whereas the sporophyte conchocelis bores into mollusk shells. Here, we analyze a high-quality genome assembly of Pyropia yezoensis to elucidate the interplay between C i availability and life cycle evolution. We find horizontal gene transfers from bacteria and expansion of gene families (e.g. carbonic anhydrase, anti-oxidative related genes), many of which show gametophyte-specific expression or significant up-regulation in gametophyte in response to dehydration. In conchocelis, the release of HCO 3 - from shell promoted by carbonic anhydrase provides a source of C i . This hypothesis is supported by the incorporation of 13 C isotope by conchocelis when co-cultured with 13 C-labeled CaCO 3 .

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Section: Discussionmentioning

confidence: 99%

Pyropia yezoensis genome reveals diverse mechanisms of carbon acquisition in the intertidal environment

Wang

et al. 2020

Nat Commun

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“…With respect to the life cycle, previous studies focused on characterization of the evolutionary aspects of the distinct stages [158,159], development of applied technologies including the designation of biomarkers [160], and treatments affecting the regulation of gene expression linked to reproductive processes [161]. A major focus for genomic research has been the interpretation and/or comparative analysis of transcriptomic data relating to the responses of laver species to abiotic stress [162,163], principally environmental conditions such as high temperature [164][165][166], repeated desiccation-rehydration [167,168], and hypersalinity [169].…”

Section: Future Issues: Identifying the Health-promoting Properties Omentioning

confidence: 99%

Health Functionality and Quality Control of Laver (Porphyra, Pyropia): Current Issues and Future Perspectives as an Edible Seaweed

Cho

Rhee

2019

Marine Drugs

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The growing interest in laver as a food product and as a source of substances beneficial to health has led to global consumer demand for laver produced in a limited area of northeastern Asia. Here we review research into the benefits of laver consumption and discuss future perspectives on the improvement of laver product quality. Variation in nutritional/functional values among product types (raw and processed (dried, roasted, or seasoned) laver) makes product-specific nutritional analysis a prerequisite for accurate prediction of health benefits. The effects of drying, roasting, and seasoning on the contents of both beneficial and harmful substances highlight the importance of managing laver processing conditions. Most research into health benefits has focused on substances present at high concentrations in laver (porphyran, Vitamin B 12 , taurine), with assessment of the expected effects of laver consumption. Mitigation of chemical/microbiological risks and the adoption of novel technologies to exploit under-reported biochemical characteristics of lavers are suggested as key strategies for the further improvement of laver product quality. Comprehensive analysis of the literature regarding laver as a food product and as a source of biomedical compounds highlights the possibilities and challenges for application of laver products.

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“…Various mitigation and adaptation approaches have been used to overcome these negative impacts of high soil salinity (Wang et al, 2019). The use of different approaches to alleviate the negative effects of salinity is likely to ensure the sustainable production of food, but salinity stress management is very challenging due to its multigenic and quantitative nature (Ahmad and Rasool, 2014).…”

Section: Introductionmentioning

confidence: 99%

Silicon and Salinity: Crosstalk in Crop-Mediated Stress Tolerance Mechanisms

et al. 2019

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Salinity stress hinders the growth potential and productivity of crop plants by influencing photosynthesis, disturbing the osmotic and ionic concentrations, producing excessive oxidants and radicals, regulating endogenous phytohormonal functions, counteracting essential metabolic pathways, and manipulating the patterns of gene expression. In response, plants adopt counter mechanistic cascades of physio-biochemical and molecular signaling to overcome salinity stress; however, continued exposure can overwhelm the defense system, resulting in cell death and the collapse of essential apparatuses. Improving plant vigor and defense responses can thus increase plant stress tolerance and productivity. Alternatively, the quasi-essential element silicon (Si)—the second-most abundant element in the Earth’s crust—is utilized by plants and applied exogenously to combat salinity stress and improve plant growth by enhancing physiological, metabolomic, and molecular responses. In the present review, we elucidate the potential role of Si in ameliorating salinity stress in crops and the possible mechanisms underlying Si-associated stress tolerance in plants. This review also underlines the need for future research to evaluate the role of Si in salinity stress in plants and the identification of gaps in the understanding of this process as a whole at a broader field level.

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Regulatory mechanisms underlying the maintenance of homeostasis in Pyropia haitanensis under hypersaline stress conditions

Cited by 51 publications

References 66 publications

Pyropia yezoensis genome reveals diverse mechanisms of carbon acquisition in the intertidal environment

Pyropia yezoensis genome reveals diverse mechanisms of carbon acquisition in the intertidal environment

Health Functionality and Quality Control of Laver (Porphyra, Pyropia): Current Issues and Future Perspectives as an Edible Seaweed

Silicon and Salinity: Crosstalk in Crop-Mediated Stress Tolerance Mechanisms

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