Why rice grains grown under higher temperature have significantly lower pH than grains grown under control condition?

More Dipak Khanal's questions See All

Why Do TDS and EC Increase with Larger Wastewater Volumes, While BOD and COD Decrease?

I have carried out MFC experiments on three different volumes, 50, 500 and 1000 mL of wastewater. Results after MFC treatment shows that TDS and EC are more in larger volumes of water i.e. TDS and...

09 August 2024 9,621 0 View

How to enrich pig excreta for increasing nutrient quality organically ?

Pig slurry is rich in major and minor nutrients. Is there any way to improve / Enrich its manure quality to be used in agriculture organically ? please share your knowledge.

09 August 2024 5,604 2 View

Is it possible to plot the atom-projected band structure using GPAW?

Hi, I'm currently working on a project where I need to plot the atom-projected band structure using GPAW. I've been able to calculate the band structure for my material, but I'm having trouble...

07 August 2024 266 3 View

Unusual intensity drop in some sections of chromatograms in DDA?

Hi, we have measured tryptic peptides using both DDA and DIA method on QExactive. In DDA replicates i saw unusual intensity drops occurring at the same sections of chromatograms in DDA replicates...

07 August 2024 3,217 4 View

Leaf area of tomato ?

Hi How can this equation Ln(LA) = 1.038 + 0.89 ln(X) be applied to calculate the leaf area of a tomato? Can you explain with an example and what is the substitution of Ln and ln?

06 August 2024 2,508 2 View

Why did the authors extrapolate a phenotype that they experimentally proved in one bacterial strain across the whole genus of the organism?

I aim to be as skeptical as possible regarding whether a pair of orthologous genes results in the same phenotype in their different but related bacterial organisms under similar environmental...

05 August 2024 6,787 4 View

How to preform densitometry on SDS-page bands?

I ran a SDS-page of a bacterial lysate and I want to quantify protein concentration in a specific band. I was thinking of using a standards ladder or make some standards are different...

05 August 2024 9,805 3 View

XRD Analysis is showing only Calcium carbonate. It is not showing other compounds. Can anyone help me get the other compounds?

XRD Analysis is showing only Calcium carbonate. It is not showing other compounds. Can anyone help me get the other compounds

04 August 2024 3,018 3 View

Which solvent is better to dissolve with secondary metabolites extracted from fungi?

I work on MCF7 cell cell for anticaner purpose and I wa to do drug preperation the drug ( secondary metabolites extracted from Aspergillus) My question which solvent is better with these secodary...

03 August 2024 4,724 2 View

What are the limitations and challenges of using machine learning for predicting concrete compressive strength in practical applications?

Machine learning (ML) has shown great potential in predicting the compressive strength of concrete, an important property for structural engineering. However, its practical application comes with...

03 August 2024 2,545 2 View

How to assess the osmotic power of a substance?

Hello, I suspect that a molecule I am using is causing bacteria to experience osmotic shock. What chemical properties should I look for to compare this capability with those of other substances?...

06 August 2024 977 1 View

How to check pH of a high strength hydrogel?

We are working on biopolymeric hydrogels. Our system is highly viscous and sticky, and the gel formed are high in strength. We are unable to use pH electrode and pH strip. Please suggest an easy...

30 July 2024 942 2 View

EDTA buffer solution?

Hello everyone! How can i prepare EDTA buffer solution (pH 8.2) to determine GSH levels? Thank you in advance.

29 July 2024 4,374 1 View

Whether i can preserve leaves samples in 2.5% glutaraldehyde in 0.05 M phosphate buffer, pH 7 for coming several weeks for further LM study ?

I want to preserve the sample leaves for the LM study of the stomata and conidia analysis. Whether 2.5% glutaraldehyde in 0.05 M phosphate buffer with pH 7 can be applied for preservation.

29 July 2024 8,560 0 View

Iwork on producing organic fertilizer from rice husk. how can I reduce the bioconversion time ?less than two months?

I work on producing organic fertilizer from rice husk. how can I reduce the bio-conversion time ?less than two months

20 July 2024 6,049 3 View

How can I regenerate a SCX column modified with Sulfonate group (Thermo 054995)? The colmun has lost its Resolution and peak to valley ratio?

The column is used in Ion Exchange Chromatography of Monoclonal antibodies and the method of analysis is based on pH gradint.

13 July 2024 7,461 1 View

My Cyclic voltammetry curve doesn't show cathodic peak of Cu2+ to Cu+. how to solve this problem?

I performed CV of Cu-MOF in a buffer solution of pH 8, and we did not find any peak corresponding to Cu2+ to Cu+. What is the reason behind this? Please give your valuable suggestions.

08 July 2024 2,388 4 View

Is it possible to generate a (semi-)permanent "transcription bubble" within a replicable plasmid?

I was wondering if it is possible to form a permanent open "ssDNA bubble" similar to a transcription bubble (>13 nucleotides) within E. coli. These criteria are important: 1. Open ssDNA...

07 July 2024 8,275 5 View

Are These Dates, Months, and Seasons Accurate for Agricultural Planning in Bangladesh?

As many of us know, there is often confusion regarding the alignment of dates, months, and seasons in our agricultural practices. To address this, I have prepared a table that aims to provide a...

27 June 2024 7,749 1 View

Is it possible for the soil pH to be around 8, but with negligible amounts of carbonates, bicarbonates and exchangeable sodium?

Can this pH of 8 be due to the presence of other substances? Or do I have an error somewhere in the analysis? Thank you!

26 June 2024 9,093 4 View

Abdullah S. Seddiek

The difference in pH between rice grains grown under higher temperature conditions and those grown under control conditions can be attributed to various factors:

Metabolic Activity: Higher temperatures can affect the metabolic activity of rice plants, including the production of organic acids. Increased metabolic activity can lead to higher levels of organic acids, such as lactic acid and acetic acid, which can lower the pH of the grains.

Fermentation: Rice grains undergo a process called anaerobic fermentation during development, where carbohydrates are converted into organic acids. Higher temperatures can accelerate this fermentation process, resulting in increased acid production and a decrease in pH.

Enzymatic Activity: Heat stress can alter the activity of enzymes involved in various metabolic processes within rice plants. These enzymes can affect the breakdown of carbohydrates and other compounds, leading to changes in pH.

Starch Hydrolysis: Under higher temperature conditions, there may be an increase in the activity of enzymes involved in starch hydrolysis. This hydrolysis process releases sugars, which are then fermented by microorganisms present in the grains. The fermentation of sugars can produce organic acids and contribute to a decrease in pH.

Microbial Activity: Higher temperatures can influence the composition and activity of microbial communities present on rice grains. Certain microorganisms, such as lactic acid bacteria, can produce organic acids as metabolic byproducts, leading to a decrease in pH.

It's important to note that the exact mechanisms and specific factors contributing to the lower pH of rice grains under higher temperature conditions may vary depending on the specific experimental conditions and rice cultivars. Further research and studies focusing on the metabolic and biochemical processes involved in rice grain development under different temperature regimes can provide more detailed insights into this phenomenon.

Gabriel Linder

Increased respiration: High temperatures accelerate the respiration rate of rice grains. During respiration, organic acids like citric acid and malic acid are produced as metabolic byproducts. These organic acids contribute to the lower pH of the grains.

Accelerated starch degradation: High temperatures can lead to increased activity of enzymes responsible for starch degradation in rice grains. This results in the breakdown of starch into simpler sugars like glucose. The metabolism of glucose produces organic acids, contributing to the lower pH of the grains.

Enhanced organic acid synthesis: Heat stress can stimulate the synthesis of organic acids in rice grains. Under high temperatures, the expression of genes related to organic acid synthesis may be upregulated. Organic acids, such as succinic acid and acetic acid, are known to lower pH, thus contributing to the acidic nature of the grains.

Reduced nutrient uptake: Heat stress can negatively affect nutrient uptake by rice plants. Imbalances in nutrient availability, particularly lower uptake of cations like potassium (K+) and calcium (Ca2+), can lead to increased accumulation of organic acids in the grains. The accumulation of organic acids can contribute to the lower pH.

Nargis Begum

High temperature increase the production of some organic acids in rice which lower it's pH however ,high temperatures effect the seed germination,pollen viability,flowering,reproductive biology.