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PubMed Journals Articles About "Left Cold Temperature Dependence Defense African Plant Mutualism" RSS

04:36 EDT 17th June 2019 | BioPortfolio

Left Cold Temperature Dependence Defense African Plant Mutualism PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Left Cold Temperature Dependence Defense African Plant Mutualism articles that have been published worldwide.

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Showing "Left cold temperature dependence defense African plant mutualism" PubMed Articles 1–25 of 16,000+

Left out in the cold: temperature-dependence of defense in an African ant-plant mutualism.

Many tropical plants are defended by ants, and the costs and benefits of these mutualisms can vary across gradients of herbivory, soil fertility, latitude, and other environmental factors. Yet despite an abundant literature documenting thermal constraints on ant activity and behavior, we know little about whether temperature variation can influence the benefits conferred by ants to plants. We evaluated the effects of dawn-to-dusk fluctuations in temperature on patrolling and aggressive behavior in four arbo...


CbADH1 improves plant cold tolerance.

ADH1 (alcohol dehydrogenase 1) was involved in plant growth and development and responded to various stresses. We published a cold-induced alcohol dehydrogenase 1 gene from C. bungeana, CbADH1, which exists 43 unique amino acids. Here, we confirmed that overexpression of CbADH1 in Arabidopsis and tobacco significantly improved cold shock tolerance through electrolyte leakage, semi-lethal temperature, phenotypic and survival analysis. These results indicate that CbADH1 is the candidate gene to improve the ab...

Mutualism and biodiversity.

Mutualism is a type of interaction in which both partners benefit from each other. For example, a butterfly receives nectar, a rich source of food, from the flower of a plant and in turn moves pollen from that plant to another far away (Figure 1). In order to reflect about the widespread nature of mutualism, John N. Thompson proposed the following thought experiment: try to imagine a plant species that is viable in its natural habitat without using on top of its own nuclear genome the genomes of a mitochond...


Identification of miRNAs and Their Response to Cold Stress in .

is an important medicinal plant widely cultivated in East Asia. MicroRNAs (miRNAs) are endogenous regulatory molecules that play essential roles in plant growth, development, and the response to environmental stresses. Cold is one of the key environmental factors affecting the yield and quality of , and miRNAs may mediate the gene regulation network under cold stress in . To identify miRNAs and reveal their functions in cold stress response in , small RNA sequencing was conducted followed by bioinformatics ...

Calcium signaling-linked CBF/DREB1 gene expression was induced depending on the temperature fluctuation in the field: Views from natural condition of cold acclimation.

Environmental adaptability is essential for plant survival. Though it is well known that a simple cooling or cold shock leads to Ca2+ signals, direct evidence has not been provided that plants use Ca2+ signals as a second messenger in the cold acclimation (CA) process in the field. By developing a technique to analyze Ca2+ signals using confocal cryomicroscopy, we investigated Ca2+ signals under several temperature conditions by combining start temperature, cooling rate, and cooling time duration. In both r...

Cold Influences Male Reproductive Development in Plants: A Hazard to Fertility, but a Window for Evolution.

Being sessile organisms, plants suffer from various abiotic stresses including low temperature. In particular, male reproductive development of plants is extremely sensitive to cold which may dramatically reduce viable pollen shed and plant fertility. Cold stress disrupts stamen development and prominently interferes with the tapetum, with the stress-responsive hormones ABA and gibberellic acid being greatly involved. In particular, low temperature stress delays and/or inhibits programmed cell death of the ...

Left out in the cold: Serving wines chilled.

A wheat GTP-binding protein like gene reduces tolerance to low temperature in Arabidopsis.

Low temperature adversely affects plant growth and crop yield. The studies largely focus on cold stress (

Plant Immunity Is Compartmentalized and Specialized in Roots.

Roots are important organs for plant survival. In recent years, clear differences between roots and shoots in their respective plant defense strategies have been highlighted. Some putative gene markers of defense responses usually used in leaves are less relevant in roots and are sometimes not even expressed. Immune responses in roots appear to be tissue-specific suggesting a compartmentalization of defense mechanisms in root systems. Furthermore, roots are able to activate specific defense mechanisms in re...

Current views on temperature-modulated R gene-mediated plant defense responses and tradeoffs between plant growth and immunity.

Elevated ambient temperatures will likely be a key consequence of climate change over the next few decades. Adverse climatic changes could make crop plants more vulnerable to a number of biotic and abiotic stresses, which would have a major impact on worldwide food production in the future. Recent studies have indicated that elevated temperatures directly and/or indirectly affect plant-pathogen interactions. Elevated temperatures alter multiple signal transduction pathways related to stress responses in the...

Research progress on the underlying mechanisms of plant defense enzymes in response to pest stress.

Plants respond to herbivory through a series of physiological and biochemical defense mechanisms to counter the stress of herbivorous pests, including the dramatic changes in activities of various defense enzymes. Here, we reviewed the recent research progress on the response mechanisms of six common plant defense enzymes, SOD, CAT, POD, PPO, LOX and PAL, to insect stress, and compared their similarities and disparities. We sorted out their interactive sequences in response to the insect stress and analyzed...

The regulatory effects of MeTCP4 on cold stress tolerance in Arabidopsis thaliana: A transcriptome analysis.

Cassava (Manihot esculenta), an important food crop in tropical areas, is well-adapted to drought conditions, but is sensitive to cold. The expression of MeTCP4, a transcription factor involved in the regulation of plant development and abiotic stresses responses, was altered under cold stress. However, its biological function under abiotic stress responses is still unclear. Here, we show that increased MeTCP4 expression enhances cold stress tolerance in Arabidopsis (Arabidopsis thaliana). To better underst...

Reversibility of membrane performance and structure changes caused by extreme cold water temperature and elevated conditioning water temperature.

The effects of extreme cold water temperature, elevated cleaning water temperature, cleaning time on membrane performance, and pore size distribution were studied using flat-sheet polyvinylidene fluoride (PVDF) membranes. Extreme cold water temperature led to a decrease in membrane permeability, and membrane pore size shrinkage. The use of periodical warm water (35 °C) membrane conditioning could almost completely recover the membrane permeability and pore size structure loss caused by extreme cold water...

Temporal proteomics of Arabidopsis plasma membrane during cold- and de-acclimation.

Freezing stress is one of the most important limiting factors of plant survival. Plants have developed a freezing adaptation mechanism upon sensing low temperatures (cold acclimation). Compositional changes in the plasma membrane, one of the initial sites of freezing injury, is prerequisite of achieving cold acclimation and have been investigated in several plant species. Conversely, the cold dehardening process at elevated temperatures (de-acclimation) has not yet been fully characterized and few studies h...

Quality characteristics of cold-dried beef slices.

In this study, salted and pasteurized beef slices were dried to approximately 40% water content at different low temperatures (10, 15 and 20 °C) and air flow rates (1, 2, 3 and 4 m/s) and the quality characteristics of the cold-dried beef slices were investigated. The TBARS values of cold-dried slices increased from 42.01 to 54.54 μmol MDA/kg with the increase in drying temperature and from 27.29 to 67.79 μmol MDA/kg with the increase in air flow rate indicating that low temperature and low air f...

Cold-inducible MaC2H2s are associated with cold stress response of banana fruit via regulating MaICE1.

MaC2H2s are involved in cold stress response of banana fruit via repressing the transcription of MaICE1. Although C2H2 zinc finger proteins have been found to be involved in banana fruit ripening through transcriptional controlling of ethylene biosynthetic genes, their involvement in cold stress of banana remains elusive. In this study, another C2H2-ZFP gene from banana fruit was identified, which was named as MaC2H2-3. Gene expression analysis revealed that MaC2H2-1, MaC2H2-2 and MaC2H2-3 were cold inducib...

Plant-herbivore coevolution and plant speciation.

More than five decades ago, Ehrlich and Raven (1964) proposed a revolutionary idea-that the evolution of novel plant defense could spur adaptive radiation in plants. Despite motivating much work on plant-herbivore coevolution and defense theory, Ehrlich and Raven never proposed a mechanism for their "escape and radiate" model. Recent intriguing proposals by Marquis et al. (2016) include sympatric divergence, pleiotropic effects of plant defense traits on reproductive isolation, and strong postzygotic isola...

Variations of compound precipitation and temperature extremes in China during 1961-2014.

Concurrent precipitation and temperature extremes usually have significant impacts on the society, economy and ecosystem. Changes in precipitation or temperature extremes in China have been extensively studied; however, less attention has been paid to their concurrence (or compound extremes) to date. This study explores the historical variations of compound extremes including dry/warm, dry/cold, wet/warm, and wet/cold combinations based on monthly precipitation and temperature observations during summer and...

Mathematical model for Plant-Insect interaction with dynamic response to PAD4-BIK1 interaction and effect of BIK1 inhibition.

Plant-insect interaction system is a widely studied model of the ecosystem. Numerical understanding of this counter system has developed from initial analogy based approach with a predator-prey model to its recent mathematical interpretation including plant immunity concept. In current work, we propose an extension to this model, including molecular interactions behind the plant defense system and its effect on ecological behaviour. Inspired from biomolecular interaction given by Louis and Shah in 2014, we ...

Performance of Cold Chains for Chesapeake Bay Farmed Oysters and Modeled Growth of Vibrio parahaemolyticus.

Temperature-controlled supply chains (cold chains) require an unbroken chain of refrigeration to maintain product quality and safety. This study investigated cold chains for farmed oysters raised in the Chesapeake Bay, one of the largest shellfish-growing regions in the United States, and sold live to the half-shell market in surrounding states. Temperature sensors were used in boxes of oysters from February to September 2017, which generated 5,250 h of temperature data. Thirty-nine businesses participated ...

Water-induced strong protection against acute exposure to low subzero temperature of adult Aedes albopictus.

As an important vector of dengue and Zika, Aedes albopictus has been the fastest spreading invasive mosquitoes in the world over the last 3-4 decades. Cold tolerance is important for survival and expansion of insects. Ae. albopictus adults are generally considered to be cold-intolerant that cannot survive at subzero temperature. However, we found that Ae. albopictus could survive for several hours' exposure to -9 to -19 oC so long as it was exposed with water. Median lethal time (LT50) of Ae. albopictus exp...

Extended phenotype in action. Two possible roles for silica needles in plants: not just injuring herbivores but also inserting pathogens into their tissues.

Phytoliths are silica bodies of various shapes including in the shape of sharp needles formed by many land plants. Defense from herbivory is one of the several known functions of phytoliths, especially the mechanical defense by abrasion of the mouthparts of arthropods and the teeth of mammalian herbivores. Another, although somewhat lesser-known, anti-herbivory defensive mechanism of phytoliths is wounding by sharp silica needles. We discuss and illuminate an even much less known defensive mechanism by phyt...

The effect of cold chamber temperature on the cadaver's electrolyte changes in vitreous humor and plasma.

Determination of time since death is one of the important objectives of a medicolegal autopsy. The level of electrolytes present in the body fluids acts as a helpful indicator in this regard. Nowadays cold chambers are present in most of the autopsy centres where the body is stored for a variable period of time at a temperature which is different from the environmental temperature. This study was undertaken to know the effect of the cold chamber temperature on the changes in sodium, potassium and chloride l...

The temperature-dependence of the dynamic contact angle.

The wetting of a solid by a liquid is a thermally-activated molecular rate process, which may be investigated by studying the temperature-dependence of the dynamic contact angle at standard experimental scales.

Cold Acclimation of the Thermoacidophilic Red Alga Galdieria sulphuraria - Changes in Gene Expression and Involvement of Horizontally Acquired Genes.

Galdieria sulphuraria is a unicellular red alga that lives in hot, acidic, toxic metal-rich, volcanic environments, where few other organisms survive. Its genome harbors up to 5% of genes that were most likely acquired through horizontal gene transfer. These genes probably contributed to G. sulphuraria's adaptation to its extreme habitats, resulting in today's polyextremophilic traits. Here, we applied RNA-sequencing to obtain insights into the acclimation of a thermophilic organism towards temperatures bel...


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