연구분야 입력
미생물-식물 근권 시스템 내 비생물적 스트레스에 의한 나노플라스틱의 미세화 (크기-14p, 글씨체-신명조, 정렬-가운데) Fragmentation of nanoplastics driven by plant-microbe rhizosphere interaction during abiotic stress combination (크기-11p, 글씨체-Times New Roman/기울임, 정렬-가운데)
	윤학원1,2; 김준태3; 장윤석1,4*; 김은주5* (크기-9p, 신명조) 1포항공대 환경공학부; 2안전성평가연구소 환경생물연구그룹; 3포항산업과학연구원 분석평가센터; 4국립환경과학원; 5한국과학기술연구원 물자원순환연구센터 (크기-9p, 신명조)

Large amounts of micro- and nanoplastics, which are released into the environment through environmental weathering of plastic items or sludge disposal/application, can end up in soil, being considered as a new plant abiotic stressor. In nature, plants face a number of abiotic stresses simultaneously. However, it is largely unknown whether and how abiotic stress combination affects the plant uptake of nanoplastics, and how plants tune the rhizosphere interactions to acclimate to a combination of nanoplastic and another abiotic stress. Here we show that smaller, fragmented nanoplastics can accumulate in the root of Arabidopsis thaliana under combined nanoplastic and Cd stresses. The specific changes in root exudation of organic acids and bacterial community composition that reveals a metabolic preference for aromatic compounds drive the fragmentation of nanoplastics in the rhizosphere. Our findings provide critical implications relevant to food security that nanoplastics will contaminate crops as well, and in turn, transfer along the human food chain.

(글자크기 10pt, 영문: Times New Roman, 국문: 신명조, 줄간격 160%)

Key words: fragmentation, nanoplastics, plant-microbe interaction, heavy metal

Acknowledgement: