ニュース&イベント

2024年6月14日 16:00-18:00 （葛飾キャンパス生命システム工学科ゼミ室 ）

生物環境イノベーション研究部門公開セミナー 

Microbial volatiles (mVOCs) interact with plants and promote growth by gene modulation and oxidative stress 

（植物―微生物間相互作用における微生物揮発性化合物 (mVOC) の、植物の遺伝子制御や酸化ストレスおよび成長に及ぼす影響）

演者：Massimo E. Maffei（University of Turin, 教授）

In the past decade considerable progress has been made in understanding the role that microbial volatile organic compounds (mVOCs) play in below- and above-ground multitrophic interactions and mVOCs functions in modulating the growth, nutrition, and health of interacting partners. The objective of this presentation is to report on the biological activity of mVOCs produced by two phytopathogens (Erwinia amylovora and Pseudomonas syringae pv. tomato) on the model plant Arabidopsis thaliana. mVOCs trigger early signaling events including Vm depolarization, cytosolic Ca2+ fluctuation, K+-gated channel activity, reactive oxygen species (ROS) and nitric oxide (NO) burst from few minutes to 16 h upon exposure. These early events are followed by the modulation of genes involved in plant growth and defense responses and auxin (including the efflux carriers PIN1 and PIN3). When tested, synthetic mVOCs induced root growth and modulated genes coding for ROS. Overall, mVOCs emitted by bacterial phytopathogens affect A. thaliana growth through a cascade of early and late signaling events that involve the gene modulation of phytohormones and ROS.

2024年6月21日 16:00-18:00 （葛飾キャンパス生命システム工学科ゼミ室 ）

Quantum Biology of Plant Magnetoreception: growing Plants outside the Geomagnetic Field

（植物磁気受信の量子生物学: 地磁気場外での植物の育成）

演者：Massimo E. Maffei（University of Turin, 教授）

The quantum biology of plant magnetoreception delves into the still unknown ways in which plants perceive and respond to the Earth’s magnetic field at the quantum level. Plant magnetoreception has long captivated scientists, challenging traditional notions of plant growth and development. How do plants respond to Earth's magnetic fields? What role does quantum biology play? These questions lead us to explore the intricate interaction between quantum mechanics and the life processes of plants. In this presentation I will briefly summarize the state of the art of quantum biology with particular reference to quantum coherence in photosynthesis, magnetic sensing mechanisms, the interplay between cryptochromes and iron-sulfur complex assembly, models and simulations as well as ongoing interdisciplinary studies.

I will also try to answer to the following key questions:

- what are the primary magnetosensors?

- how many different magnetic field sensing mechanisms are there?

- what are the primary magnetosensing mechanisms?