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Heat Stress - Wiley Online Library

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Last Updated: 15 September 2022

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The benefits of Maca (Lepidium meyenii) extract administration for male rabbits affected by environmental heat stress

Heat stress is the most significant environmental issue in rabbit health status impairment, which can lead to reduced productivity. The current study looked at the potential protective role of Maca extract in reducing rabbits' adverse effects of HS. Growing Vu2010line 6 U2010week 6u2010old buck rabbits were orally administered Maca extract at doses of 0, 200, 400, or 600 mg/head twice a week twice per week, according to the U2010web website. Rabbis provided Maca's greatest growth results, feed intake, and feed conversion ratios when compared to the control groups. Liver and test weights in Maca treated groups were significantly higher than those in the control group. With a significant decrease in abnormal sperm relative to the control group, the MAC4 group showed significant improvement in sperm motility, longevity, membrane functionality, monitoring, and libido. Rabbis exposed to HS were found to moderate to severe degenerative and necrotic changes, which were alleviated with Maca oral administration.

Source link: https://onlinelibrary.wiley.com/doi/10.1111/jpn.13772


Genome‐Wide Characterization of the Terpene Synthase Gene Family in Ricinus communis and its Transcriptional Regulation Under Heat Stress

Ricinus communis, an important oilseed crop that can grow in harsh environments and still show high yields. We therefore set out to investigate the terpene synthase gene family in Ricinus communis and its transcriptional control under heat stress. Bioinformatics and transcriptomics were used to analyze the R. communis TPS family and identify potential candidate genes for further genomics research focused on stress-u2010-related agronomic challenges. Several model plant species were matched, and the presence of the canonical motif DDXXD amongst them indicates that TPS genes were highly conserved during plant evolution. 37 RcTPS genes are highly responsive to high-temperature stress, according to Transcriptomics' findings, since they increased expression levels in seedlings growing at 35u00b0C at 35°C compared to those growing at 20 and 25 b0C.

Source link: https://onlinelibrary.wiley.com/doi/10.1002/agj2.21208


Use of Pacific thread herring (Opisthonema libertate) protein hydrolysates in Nile tilapia (Oreochromis niloticus) feeds: Productive performance and antioxidant enzymes on organisms exposed to a heat‐induced stress

The Nile tilapia industry accounts for 71% of aquaculture total world production and calls for novel feeds and better proteins. In this sense, Pacific thread herring contains high-quality proteins that can produce protein hydrolysates with antioxidant activity for tilapia feeds. The experimental and a control feeds were fed for six weeks and then exposed to an acute stress by temperature increase for 24 hours. The FH10 organisms fed with the FH10 increased weight increase in comparison to other feeds, indicating a higher protein yield.

Source link: https://onlinelibrary.wiley.com/doi/10.1111/are.16087


A conserved HSF:miR169:NF‐YA loop involved in tomato and Arabidopsis heat stress tolerance

Different stress and developmental networks in plants are controlled by heat stress transcription factors and microRNAs. Here, we show that plants increase their heat stress tolerance through HSF-u2010 transcriptional control of Nuclear Factoru2010 transcription factors. In addition, the Sly 2010NF/A10/A10 mutants showed a relationship with increased heat tolerance, leading to a decrease in heat tolerance. Hence, a regulatory feedback loop involving HSFs, miR169s, and NFu2010YAs plays a vital role in the regulation of heat stress response in tomato and Arabidopsis plants.

Source link: https://onlinelibrary.wiley.com/doi/10.1111/tpj.15963


Presence of ginsenoside re during in vitro maturation protects porcine oocytes from heat stress

The results showed that HS reduced the cumulus cell growth and polar body extrusion rate, the levels of GSH and MMP, the ATP content, porcine oocyte expression, and embryo development competence, but embryo development could be aided in part by GRe treatment. In addition, HS increased the ROS generation and percentage of apoptosis, the gene expression of porcine oocytes' HSP90, CASP3, and CytoC, but the effect on Cyto C and BAX expression induced by HS could be limited by GRe. These results combined showed that the presence of GRe during in vitro maturation saves porcine oocytes from HS. These results indicate that GRe may be used as a potential defensive drug to shield porcine oocytes from HS injury.

Source link: https://onlinelibrary.wiley.com/doi/10.1111/rda.14234


Effects of drought and heat stresses during reproductive stage on pollen germination, yield, and leaf reflectance properties in maize (Zea mays L.)

Drought and heat stresses are the primary abiotic stress factors that hinder maize production. However, the response of maize reproductive stage responses to combined heat and drought are still less explored. Sincerely, this research sought to determine the effect of optimum daytime and warmer daytime temperatures on pollen germination, morpho, and yield potential using two maize genotypes with varying soil moisture content, namely, 100% and 40% irrigation during flowering. Both control and heat stress were similar, but dramatically reduced under combined stresses and drought strain compared to the control. Genotype 201cMo201d reduced its green leaf area to minimize the water loss, which appears to be one of the company's adaptive tactics under stress conditions. Pigment and plant health indices related to drought and combined stressors were found to be more sensitive to drought and combined stressors than heat stress.

Source link: https://onlinelibrary.wiley.com/doi/10.1002/pld3.434


Heat stress affects potato's volatile emissions that mediate agronomically important trophic interactions

The distressing plants in P. operculella adult moths were less effective to P. operculella adult moths, who were repelled by HT VOCs, but they did recruit the parasitoid, T. chilonis, which were attracted, as the larvaes were attracted. Both insects were affected by the plant's HT and exogenous applications of the hormone, ABA, which is known to reduce stomatal apertures, reduced leaf volatile emissions, and affected the plant's HT-2010 planted attractions. From these findings, we conclude that HT stress has a major effect on this plantu2010insect interaction, possibly lowering herbivore ovipositions while increasing parasitoid ovipositions.

Source link: https://onlinelibrary.wiley.com/doi/10.1111/pce.14416

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions