Vaccinate plants instead of using pesticides. Free Technical Library News

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Vaccinating plants instead of using pesticides

24.05.2021

Plant immunity can be activated in the presence of harmless microorganisms and thereby prepare the plant for pest control by replacing pesticides. This conclusion was reached by Associate Professor Toshiki Furuya and Professor Kazuyuki Kuchitsu from the Tokyo University of Science.

Plants have evolved unique immune mechanisms that they can activate when they detect the presence of a pathogen. Interestingly, the presence of certain non-pathogenic microorganisms can also induce a plant to activate its systemic immunity mechanisms, and some studies have shown that pre-treatment of crops with such "immunity-activating" non-pathogenic microorganisms can make crops better prepared to fight infections from pathogens.

This means that immune-activating non-pathogenic microorganisms can act like plant vaccines, providing the plant's immune system with a low-risk stimulus that prepares it to fight real threats. These are exciting results for scientists because they suggest the possibility of using such pre-treatment as a form of biological pest control that would reduce the need for agricultural pesticides.

Currently, there is no simple method to assess the ability of microorganisms to activate the immune system of plants. Conventional methods involve the use of whole plants and microorganisms, and this inevitably makes traditional screening impossible.

A team of scientists from the Tokyo University of Science has developed a screening method based on cultured plant cells that facilitates such testing. This may lead to the development of microbial-based crop protection methods that will reduce the need for chemical pesticides.

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New versions of Wi-Fi for tablets 04.02.2012

Semiconductor and consumer electronics manufacturers are working to improve the connectivity and ability of tablets to stream content to TVs. Michael Halston, senior vice president of Broadcom Corporation, spoke about this at the DesignCon 2012 conference. Broadcom is developing a technology called 5G Wi-Fi based on the 802.11ac version of the Wi-Fi specification.

The technology is called 5G Wi-Fi because it represents the fifth generation of Wi-Fi for consumer devices, Halston said. Following Broadcom, other companies began to use this name. Wi-Fi names are confusing: for example, ordinary users do not know that the 802.11ac version of this standard is newer than 802.11n.

The next Wi-Fi innovation will be the emergence of the 802.11ad standard, which defines the operation of devices in the 60 GHz band and is characterized by very high transmission speeds, but a shorter range. According to Halston, 802.11ad can be considered a revolutionary standard in contrast to the "evolutionary" standard 802.11ac. Although some companies may release 802.11ad-enabled chips this year, the market is not yet ready for these new products. Full adoption of this standard will occur within the next five years.

Products with support for 802.11ac, or 5G Wi-Fi, which will find application in tablets, are expected by the middle of this year.

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