Integrated transcriptome and metabolome analysis reveals molecular responses of spider to single and combined high temperature and drought stress

Chen, Li-jun; Li, Zhe-zhi; Zhou, Xuan-wei; Xing, Xiaojing; Lv, Bo

doi:10.1016/j.envpol.2022.120763

Cited by 6 publications

(2 citation statements)

References 55 publications

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“…Spiders inhabiting dry, arid habitats, such as deserts, exhibit physiological adaptations to these conditions that are sometimes lacking in temperate relatives [ 99 ]. Unsurprisingly, exposure to heat and other abiotic stresses such as drought can increase respiration rates in spiders while decreasing survival or altering development [ 100 ]. The wolf spider Pardosa glacialis is found in Arctic ecosystems, and each sex responds differently to inter-annual variations in temperature, with larger adult size and the degree of SSD increasingly skewed toward larger females when snowmelt occurs earlier in spring [ 101 ].…”

Section: Spiders and Climate Changementioning

confidence: 99%

Climate Change, Extreme Temperatures and Sex-Related Responses in Spiders

Harvey

Dong

2023

Biology

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Climatic extremes, such as heat waves, are increasing in frequency, intensity and duration under anthropogenic climate change. These extreme events pose a great threat to many organisms, and especially ectotherms, which are susceptible to high temperatures. In nature, many ectotherms, such as insects, may seek cooler microclimates and ’ride out´ extreme temperatures, especially when these are transient and unpredictable. However, some ectotherms, such as web-building spiders, may be more prone to heat-related mortality than more motile organisms. Adult females in many spider families are sedentary and build webs in micro-habitats where they spend their entire lives. Under extreme heat, they may be limited in their ability to move vertically or horizontally to find cooler microhabitats. Males, on the other hand, are often nomadic, have broader spatial distributions, and thus might be better able to escape exposure to heat. However, life-history traits in spiders such as the relative body size of males and females and spatial ecology also vary across different taxonomic groups based on their phylogeny. This may make different species or families more or less susceptible to heat waves and exposure to very high temperatures. Selection to extreme temperatures may drive adaptive responses in female physiology, morphology or web site selection in species that build small or exposed webs. Male spiders may be better able to avoid heat-related stress than females by seeking refuge under objects such as bark or rocks with cooler microclimates. Here, we discuss these aspects in detail and propose research focusing on male and female spider behavior and reproduction across different taxa exposed to temperature extremes.

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Section: Spiders and Climate Changementioning

confidence: 99%

Climate Change, Extreme Temperatures and Sex-Related Responses in Spiders

Harvey

Dong

2023

Biology

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“…Overall, water scarcity from high temperatures has a substantial negative influence on agricultural production, the ecological environment, aquatic resources, and socioeconomic systems (Zhang et al, 2023). Therefore, insight into the underlying mechanisms that control the effects of drought and high temperature on agricultural primary production and global grain yield will aid in maintaining agricultural ecosystem stability and formulating targeted management strategies under climate change scenarios (Chen et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Influence of high temperature and drought stress at jointing stage on crop physiological responses and growth in summer maize plants (Zea mays L.)

Fan,

Hu,

et al. 2024

Front. Plant Physiol.

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The combination of low precipitation and high temperature stresses at jointing stage can severely threaten maize production. However, to date, few studies have been conducted on the effects of combined stress on maize plants expression at jointing stage. In the current research, plant growth, root morphology, and yield components were determined after exposure to the single and combined stress of high temperature and drought stress. Leaf gas exchange, malondialdehyde (MDA) content and antioxidant enzymes activities were conducted to identify potential mechanisms of stress responses. The single stress of high temperature and drought significantly reduced the biomass of various organs and the total aboveground biomass, which reduced the yield of maize plants. High temperature substantially decreased aboveground biomass and yield under mild and severe water stress, which indicated that the inhibitory effects of combined stress were more significant than that of high temperature or drought individually. High temperature exacerbated the negative impacts of water stress on plants growth and yield as shown by the reduced leaf photosynthetic rate (Pn), probably related to the increasing MDA content. Leaf-level water use efficiency (WUE) was enhanced as the reduction in leaf transpiration (Tr) was greater than the decrease in leaf photosynthesis under high temperature, even for those plants were suffering water stress. High temperature, drought stress and their combination all greatly increased the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), but were ineffective in mitigating oxidative damage. The MDA content and antioxidant enzymes activities showed an increasing trend following 12 days of combined stress. This substantiated the irreversible damage induced by combination of high temperature and desiccation stresses. The combined stress optimized roots length, root volume, root surface area, and thinned the average root diameter, which improved the adaptation of maize to high temperature, drought and combined stress. This study has provided meaningful references for improved understanding the impacts of drought, high temperature, and concurrent events on the physiology and growth of maize plants during the jointing period.

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