Terpene volatiles are found in many important fruit crops, but their relationship to flavor is poorly understood. Here, we demonstrate using sensory descriptive and discriminant analysis that 1,8-cineole contributes a key floral/eucalyptus note to the aroma of ripe 'Hort16A’ kiwifruit (Actinidia chinensis). Two quantitative trait loci (QTLs) for 1,8-cineole production were identified on linkage groups 27 and 29a in a segregating A. chinensis population, with the QTL on LG29a colocating with a complex cluster of putative terpene synthase (TPS)-encoding genes. Transient expression in Nicotiana benthamiana and analysis of recombinant proteins expressed in Escherichia coli showed four genes in the cluster (AcTPS1a–AcTPS1d) encoded functional TPS enzymes, which produced predominantly sabinene, 1,8-cineole, geraniol, and springene, respectively. The terpene profile produced by AcTPS1b closely resembled the terpenes detected in red-fleshed A. chinensis. AcTPS1b expression correlated with 1,8-cineole content in developing/ripening fruit and also showed a positive correlation with 1,8-cineole content in the mapping population, indicating the basis for segregation is an expression QTL. Transient overexpression of AcTPS1b in Actinidia eriantha fruit confirmed this gene produced 1,8-cineole in Actinidia. Structure-function analysis showed AcTPS1a and AcTPS1b are natural variants at key TPS catalytic site residues previously shown to change enzyme specificity in vitro. Together, our results indicate that AcTPS1b is a key gene for production of the signature flavor terpene 1,8-cineole in ripe kiwifruit. Using a sensory-directed strategy for compound identification provides a rational approach for applying marker-aided selection to improving flavor in kiwifruit as well as other fruits.

Sensors being developed by Airbus and a California-based startup might be able to sniff out COVID-19 in an effort to help prevent its spread.

Researchers at the National University of Singapore have developed a soft sensor and actuator to monitor bladder volume and help empty it on-demand. The device is intended to be implanted on the bladder surface during a surgical procedure to treat patients who cannot completely empty their bladders voluntarily. Patients can suffer from an underactive bladder […]

The Department of Justice today announced that it will require Heraeus Electro-Nite LLC to divest certain assets that it acquired from Midwest Instrument Company Inc. (Minco) to Keystone Sensors LLC in order to resolve the department’s competitive concerns.

Using the flow of water inside the pipes to power the water network's own monitoring devices could eliminate the need for batteries in those systems.

Sensors on cell phones is a concept that has gone mainstream enough that this Kickstarter project has blown its funding goals out of the water. The device turns your cell phone into a "Swiss Army Knife of environmental sensors."

Beekeepers will soon be able to track the health of their colonies right from their smartphone.

One of the big NIMBY complaints about wind turbines is the constant blinking lights that make them visible to aircraft. A new sensor system would eliminate the nuisance, lighting the turbines only when planes are approaching.

The supersensitive system can also glean clues about health

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Multiple sclerosis (MS) is a progressive, chronic disorder in which the body's immune system attacks the central nervous system, resulting in multiple

Novel device, which is in the size of a wristwatch, can monitor an individual's body chemistry to help improve athletic performance and identify potential health problems.

Novel lightweight electronic sensors can be integrated into flexible fabrics, including the kinds of polyesters often used in athletic wear, to provide

Advanced equipment can detect problems 75 days before they occur

Mobile app market intelligence firm Sensor Tower, which provides data-driven insights about the app economy, has raised $45 million in new funding from Riverwood Capital. This is the first significant investment the now-profitable company has seen since its $1 million seed round in 2013. The investment speaks to the growing demand for data about the […]

The Mendel Air Sensor app is the first app I open every morning. Before Reddit, before Gmail, before NYT. I roll over, grab my phone and check my plants. I don’t know if there’s a higher honor I can bestow on an app. The Mendel Air Sensor is a game-changer for indoor growers. It offers […]

System devised by neurotech start-up Koniku uses living cells

Describes the specific functions of the application, including the remote control commands with programming examples.For information on operating the Spectrum Analyzer see the user manual of the base unit.

In a video obtained by MailOnline, a source filmed the two singers, aged 46 and 43, having the time of their life at the Channing Tatum crafted dance and acrobatic extravaganza.

The space agency says exploring different geological areas on the surface of Venus will provide insights into the planet's evolution and even our own climate.

These camera sensors use microprocessors, which are made of biological cells. These processors help in identifying different chemicals and microbes floating in the air but invisible to human eyes.

As of today, the total number of confirmed COVID-19 cases in India is 27892 with 6185 recovered cases and 872 deaths. Early diagnosis of COVID-19 is crucial to slow down the spread of the infection. COVID-19 spread at a

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Oxford : Oxford University Press, 2019.

Quek, Soon Bee, author

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