Effects of desiccation, diurnal temperature changes and irradiance on archeospore production of Pyropia yezoensis

Xu, Donghui; Song, Xinwei; Li, Fengting; Pan, Xiaohui; Zhu, Weifang; Zhang, Xuecheng

doi:10.1016/j.aquaculture.2019.05.003

Cited by 10 publications

(3 citation statements)

References 13 publications

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“…Xu et al. (2019) studied the changes in Pyropia yezoensis during development under natural conditions, including tidal drying, diurnal temperature alternation, and different light levels. They found that external factors significantly affected the induction of ascospore development in P .…”

Section: Discussionmentioning

confidence: 99%

Conjoint transcriptomic and proteogenomic analysis of quality formation in various Porphyra dentata harvests: Photosynthesis acts as a stressor

Yang

et al. 2023

Food Frontiers

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Porphyra dentata is widely cultivated for its rich nutritional value and superior palatability. However, its quality varies with harvest time and there is a lack of understanding of the molecular mechanism of quality differences. Photosynthesis is a key factor in human‐mediated plant development and quality formation and changes. To explore the quality impact of photosynthesis on P. dentata, we compared transcriptomic and proteogenomic data of the first and fifth harvests. Of the 53,580 genes detected in this study, 7073 were identified as differentally expressed genes by RNA‐seq, and 462 showed differential expression between genes and proteins in proteogenomics. The results show that quality differences between harvest periods were regulated by proteins and genes from the allophycocyanin, Lhca1, chloroplast processing enzyme, and phycocyanin families. Generated cell tissue passivated continuously, the blades gradually became thicker and darker and had an increased degree of lignification, decreased protein levels, increased carbohydrate levels, and decreased quality. Our results demonstrate the complementary power of transcriptomics and proteogenomics and provide a rich database for quality improvement or evolutionary function analysis of P. dentata.

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Section: Discussionmentioning

confidence: 99%

Conjoint transcriptomic and proteogenomic analysis of quality formation in various Porphyra dentata harvests: Photosynthesis acts as a stressor

Yang

et al. 2023

Food Frontiers

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“…While our case study deals with phenology of temperate woody plants, it provides insights into a number of other systems with parallel issues. Studies of aquatic algae (Xu et al, 2019), insects (Anduaga et al, 2018), amphibians (Wright & Bruni, 2004) and fish (López‐Olmeda & Sánchez‐Vázquez, 2009) have similarly struggled to disentangle the effects of thermo‐ and photoperiodicity. Thus, we believe the potential problems and solutions we present here are broadly applicable to studies on other organisms and biological processes that utilize temperature and light signals.…”

Section: Introductionmentioning

confidence: 99%

Experimental designs for testing the interactive effects of temperature and light in ecology: The problem of periodicity

2023

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Temperature and light cues interact to control many biological processes. Experiments give researchers the ability to manipulate these environmental cues independently and can be designed to robustly quantify their individual and interactive effects on any particular biological activity. Such experiments have produced important insights into the environmental controls on numerous biological processes in both plant and animal taxa across terrestrial and aquatic environments. Testing the interactive effects of multiple environmental cues, however, requires experimental treatments to be fully independent; any unmeasured experimental covariation among treatments can result in incorrect conclusions. Using a database of controlled environment experiments on the spring phenology of woody plants as a case study, we highlight how a common experimental set‐up, designed to parse the interactive effects of temperature and photoperiod on time to budburst, introduces a latent experimental covariation of these treatments by coupling photo‐ and thermoperiodicity. Using data simulations, algebraic corrections and a comparative analysis of published experiments, we demonstrate how this unmeasured experimental covariation biases statistical inference regarding the relative contribution of light and temperature cues to phenological variation. We identify this experimental covariation in more than 40% of published phenology studies that manipulate photoperiod. Our analyses demonstrate that the coupling of thermo‐ and photoperiodicity results in the overestimation of the effect of photoperiod, the underestimation of forcing effects, and misleading conclusions about their interactions on phenology. This may, in part, explain why the significance of photoperiod cues for spring phenology is currently debated in the literature. Accurate forecasting of how varying environmental conditions will impact the dynamics of biological events requires accurately quantifying cue responses. To this end, we present several options for statistical corrections and alternative experimental designs that can provide more robust estimates of the relative effects of temperature and photoperiod on phenology and many other biological processes controlled by temperature and light. Read the free Plain Language Summary for this article on the Journal blog.

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“…The effects of desiccation on macroalgae have been studied from a wide range of aspects, from basic morphology to physiology, such as rates of survival, growth, photosynthesis, respiration, and reproduction (Contreras-Porcia et al 2017 ; Flores-Molina et al 2014 ; Karsten 2012 ; Xu et al 2019 ). Using physiological, transcriptomic, and proteomic approaches, several studies have determined that the physiological mechanisms of macroalgae are well coordinated in response to desiccation stress, which includes morphological and cell wall changes, photosynthetic activity diminishment, increased expression and synthesis of associated proteins, scavenging of reactive oxygen species (ROS) by antioxidant enzymes and compounds, and osmolyte synthesis (Contreras-Porcia et al 2013 , 2017 ; Flores-Molina et al 2014 ; López-Cristoffanini et al 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Discrepancy in photosynthetic responses of the red alga Pyropia yezoensis to dehydration stresses under exposure to desiccation, high salinity, and high mannitol concentration

Li²,

Wang

et al. 2021

Mar Life Sci Technol

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Macroalgae that inhabit intertidal zones are exposed to the air for several hours during low tide and must endure desiccation and high variations in temperature, light intensity, and salinity. Pyropia yezoensis (Rhodophyta, Bangiales), a typical intertidal red macroalga that is commercially cultivated in the northwestern Pacific Ocean, was investigated under different dehydration stresses of desiccation, high salinity, and high mannitol concentration. Using chlorophyll fluorescence imaging, photosynthetic activities of P. yezoensis thalli were analyzed using six parameters derived from quenching curves and rapid light curves. A distinct discrepancy was revealed in photosynthetic responses to different dehydration stresses. Dehydration caused by exposure to air resulted in rapid decreases in photosynthetic activities, which were always lower than two other stresses at the same water loss (WL) level. High salinity only reduced photosynthesis significantly at its maximum WL of 40% but maintained a relatively stable maximum quantum yield of photosystem II (PSII) (Fv/Fm). High mannitol concentration induced maximum WL of 20% for a longer time (60 min) than the other two treatments and caused no adverse influences on the six parameters at different WL except for a significant decrease in non-photochemical quenching (NPQ) at 20% WL. Illustrated by chlorophyll fluorescence images, severe spatial heterogeneities were induced by desiccation with lower values in the upper parts than the middle or basal parts of the thalli. The NPQ and rETRmax (maximum relative electron transport rate) demonstrated clear distinctions for evaluating photosynthetic responses, indicating their sensitivity and applicability. The findings of this study indicated that the natural dehydration of exposure to air results in stronger and more heterogeneous effects than those of high salinity or high mannitol concentration.

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Effects of desiccation, diurnal temperature changes and irradiance on archeospore production of Pyropia yezoensis

Cited by 10 publications

References 13 publications

Conjoint transcriptomic and proteogenomic analysis of quality formation in various Porphyra dentata harvests: Photosynthesis acts as a stressor

Conjoint transcriptomic and proteogenomic analysis of quality formation in various Porphyra dentata harvests: Photosynthesis acts as a stressor

Experimental designs for testing the interactive effects of temperature and light in ecology: The problem of periodicity

Discrepancy in photosynthetic responses of the red alga Pyropia yezoensis to dehydration stresses under exposure to desiccation, high salinity, and high mannitol concentration

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