Although many pathogens and pests have the potential to cause severe diseases and damages to their host plants, plants in nature often appear healthy and are naturally resistant to most pathogens. Nonhost resistance, which describes the ability of a plant species to repel all attempts of a pathogen species to colonize it, represents a major barrier against damaging biotic stressors but remains surprisingly poorly understood due, in part, to a lack of field studies. In their new Spotlight comment titled "Caffeoylputrescine-hexenal-mediated nonhost resistance against leafhoppers", Zhengquin Fu and his collaborators highlight and discuss a recent study from Bai et al. published in Science that identified a volatile compound from tobacco leaves that confers resistance to those leafhoppers. A fascinating study!
Ingawa vimelea vingi vina uwezo wa kusababisha magonjwa na uharibifu mkubwa kwa mimea yao, mimea katika asili mara nyingi inaonekana kuwa na afya na ni ya asili ya kukinza vimelea vingi. Uvumilivu wa mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea ya mimea. Katika makala yao ya mwisho, 'Usaidizi wa Caffeine-Putrescine-Hexenal dhidi ya Leafhoppers', Zheng Qinfu na wenzake wanaelezea utafiti wa hivi karibuni kutoka kwa Bai et al. Katika utafiti uliochapishwa katika jarida la Science, wanasayansi wamegundua kwamba kemikali inayotokana na majani ya tumbaku inaweza kuwa na uwezo wa kuua vipepeo hao. Uchunguzi wenye kuvutia!