Topics

Yield response of field-grown soybean exposed to heat waves under current and elevated CO .

08:00 EDT 14th August 2019 | BioPortfolio

Summary of "Yield response of field-grown soybean exposed to heat waves under current and elevated CO ."

Elevated atmospheric CO concentration ([CO ]) generally enhances C plant productivity, whereas acute heat stress, which occurs during heat waves, generally elicits the opposite response. However, little is known about the interaction of these two variables, especially during key reproductive phases in important temperate food crops, such as soybean (Glycine max). Here, we grew soybean under elevated [CO ] and imposed high (+9°C) and low (+5°C) intensity heat waves during key temperature-sensitive reproductive stages (R1, flowering; R5, pod filling) to determine how elevated [CO ] will interact with heat waves to influence soybean yield. High-intensity heat waves, which resulted in canopy temperatures that exceeded optimal growth temperatures for soybean, reduced yield compared to ambient conditions even under elevated [CO ]. This was largely due to heat stress on reproductive processes, especially during R5. Low intensity heat waves did not affect yields when applied during R1 but increased yields when applied during R5 likely due to relatively lower canopy temperatures and higher soil moisture, which uncoupled the negative effects of heating on cellular- and leaf-level processes from plant-level carbon assimilation. Modeling soybean yields based on carbon assimilation alone underestimated yield loss with high intensity heat waves and overestimated yield loss with low intensity heat waves, thus supporting the influence of direct heat stress on reproductive processes in determining yield. These results have implications for rain-fed cropping systems and point towards a climatic tipping point for soybean yield when future heat waves exceed optimum temperature. This article is protected by copyright. All rights reserved.

Affiliation

Journal Details

This article was published in the following journal.

Name: Global change biology
ISSN: 1365-2486
Pages:

Links

DeepDyve research library

PubMed Articles [20592 Associated PubMed Articles listed on BioPortfolio]

Chlorophyll fluorescence and carbohydrate concentration as field selection traits for heat tolerant chickpea genotypes.

Chickpea (Cicer arietinum L.), a cool season crop is severely affected by heat stress, predicted to increase due to warming climates. Research for identifying heat tolerance markers for potential chic...

Differences in Small Plot and On-Farm Trials for Yield Response to Foliar Fungicide in Soybean.

Soybean yield response variability to foliar fungicide applications was evaluated in on-farm replicated strip trials (OFTs) and small-plot trials (SPTs) from 2008 through 2015 in Iowa. A total of 230 ...

Health-risk perception and its mediating effect on protective behavioral adaptation to heat waves.

Ensuring spontaneously adjusting behaviors of the public in their daily life in response to heat waves is an important aspect of successful public health intervention under climate change. However, th...

Transcriptomic analysis of the maize (Zea mays L.) inbred line B73 response to heat stress at the seedling stage.

High temperature is a common stress, which influences the growth and reproduction of plants. Maize is one of the most important crops all over the world. However, heat stress reduces significantly the...

Metabolic responses of rice cultivars with different tolerance to combined drought and heat stress under field conditions.

Rice is susceptible to both drought and heat stress, in particular during flowering and grain filling, when both grain yield and quality may be severely compromised. However, under field conditions, t...

Clinical Trials [6291 Associated Clinical Trials listed on BioPortfolio]

Impact of Thermal Stress on Pulmonary Absorption and Toxicokinetics of 3 Organic Solvents

In Quebec, thousands of workers are concomitantly exposed to heat and chemical compounds. Exposure to heat induces physiological responses that help maintaining a stable body temperature. ...

Evaluation of Soybean Peptides Product on Regulation of Blood Pressure Effect by Clinical Trial

This is the report to assess the effect of supplementation with soybean peptides on blood pressure among people with mild hypertension. Overall, soybean peptides consumption for 8 weeks co...

The Impact of Heat Acclimation on Pro- and Anti- Inflammatory Cytokine Response

There is growing evidence to conclude that part of the cascade leading to heatstroke is related to an inflammatory reaction triggered by the heat stress. The reduced ability to sustain hea...

Heat Stress in Wheelchair Sports

The aim of the study is to study the thermoregulatory responses under real life conditions, such as during wheelchair rugby and basketball matches. A further goal is to develop and validat...

Efficacy and Safety of Soybean Germ Extract on Decrease of Body Fat

This study was conducted to investigate the effects of daily supplementation of Soybean germ extract on decrease of body fat

Medical and Biotech [MESH] Definitions

A constellation of responses that occur when an organism is exposed to excessive heat and other environmental stressors. Responses include synthesis of some proteins, repression of other proteins, and expression of new proteins. (From Segen, Dictionary of Modern Medicine, 1992)

Oil from soybean or soybean plant.

Heat and cold stress-inducible, transcription factors that bind to inverted 5'-NGAAN-3' pentamer DNA sequences and are regulated by poly(ADP) ribosylation. They play essential roles as transcriptional activators of the HEAT-SHOCK RESPONSE by inducing expression of large classes of MOLECULAR CHAPERONES and heat-shock proteins. They also function in DNA REPAIR; transcriptional reactivation of latent HIV-1; and pre-mRNA processing and nuclear export of HSP70 HEAT-SHOCK PROTEINS during heat stress.

High-amplitude compression waves, across which density, pressure, and particle velocity change drastically. The mechanical force from these shock waves can be used for mechanically disrupting tissues and deposits.

A nonsurgical treatment that uses either HIGH-ENERGY SHOCK WAVES or low energy ACOUSTIC WAVES to treat various musculoskeletal conditions (e.g., PLANTAR FASCIITIS; TENNIS ELBOW). A probe placed on the skin conducts the shock waves thereby delivering a mechanical force to the body’s tissues.

Quick Search


DeepDyve research library

Relevant Topics

Mental Health
Adhd Anorexia Depression Dyslexia Mental Health Psychiatry Schizophrenia Stress Mental health, although not being as obvious as physical health, is very important, causing great unhappiness to those affected, causing add...

Food
Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism ...

GMO Crops
A genetically modified organism (GMO) is an organism whose genetic material has been altered using genetic engineering techniques. Organisms that have been genetically modified include micro-organisms such as bacteria and yeast, insects, plants, fish, an...


Searches Linking to this Article