Conventional plant regeneration approaches by cell culture require the external application of plant growth regulators, including hormones. However, optimizing culture conditions can be laborious. Now, researchers have developed a novel plant regeneration system that omits the need for hormone application by genetically regulating the expression of genes that control plant cell differentiation. Their work holds significant potential in the development of genetically modified plants in a simpler and cost-effective manner.

Kumamoto University researchers have identified a novel Heat Shock Factor (HSF), designated as HSF5, which plays a crucial role in the completion of meiosis and the activation of genes essential for sperm formation. This discovery provides valuable insights into underlying causes of spermatogenic failure, the major contributor to male infertility. Furthermore, unlike other typical Heat Shock Factors, which primarily regulate gene expression in response to stress, such as heat shock, HSF5 plays a specific role in male germ production during meiosis under non-stress conditions.

For the first time since 1914, a new species of the Japanese lily known as sukashiyuri has been identified. An Osaka Metropolitan University-led research team analyzed the morphology and DNA of these lilies and has revised the conventional classification from four taxonomic groups to eight.

How do planets form? How do galaxies evolve? And ultimately, how did the universe itself begin? A unique astronomical observatory that researchers hope will unravel some of the biggest mysteries out there marks its opening on April 30, 2024.  

At an altitude of 5,640 meters, the University of Tokyo Atacama Observatory (TAO), built on the summit of a desert mountain in northern Chile, is the highest astronomical observatory in the world, which should give it unrivaled capabilities, but presents some novel challenges.

One or all — that’s the current choice many networks give users when it comes to controlling smart devices. With the evolving Internet of Things (IoT), referring to the technology that connects devices to one another and to the cloud, users need more specific control over their devices. Junji Shikata, a researcher at Yokohama National University, has developed a solution that may allow both more efficient and more secure control.

Quadcopters, the most popular type of low-cost drone, are being extensively used in many industrial fields. However, introducing grasping capabilities into these lightweight flying devices is challenging. In a recent study, researchers developed a self-folding origami gripper, which can be attached to a quadcopter to enable it to grasp small objects. Thanks to its low weight, respectable holding strength, and biodegradable properties, the proposed design could revolutionize how origami technology is incorporated into quadcopters.

High refractive index polymers (HRIPs) are essential for manufacturing modern optoelectronic devices, including displays and light sensors. However, high-performance HRIPs are expensive and environmentally unfriendly. Recently, a research team from Waseda University developed a new family of HRIPs called poly(thiourea)s. Thanks to unique intermolecular interactions, these compounds can be easily processed into low-cost transparent HRIPs for optoelectronic applications, as well as degraded and recycled through an inexpensive protocol, making them a sustainable option.

An entirely new approach to inhibiting DNA-cleaving enzymes works through the aggregation of an otherwise non-toxic molecule. This Kobe University discovery may lead to a much-needed method for curbing Streptococcus growth.

Researcher Ko Mochizuki of the University of Tokyo discovered that two species in the genus Angelica are pollinated primarily by hornets. This overturns the conventional belief that Angelica species are “generalists,” meaning that there is not one primary pollinator but a variety of species. As hornets are rarely primary pollinators, the discovery also impacts future ecological research and conservation efforts. The findings were published in the journal Ecology.