Environmental Chemodynamics Project, National Institute of Fundamental Studies, Kandy, Sri Lanka.
International Centre for Applied Climate Science, University of Southern Queensland, West Street, Toowoomba, QLD, Australia.
Environ Geochem Health. 2017 Dec;39(6):1421-1439. doi: 10.1007/s10653-017-9957-y. Epub 2017 Apr 25.
Rapid surge of interest for carbon nanotube (CNT) in the last decade has made it an imperative member of nanomaterial family. Because of the distinctive physicochemical properties, CNTs are widely used in a number of scientific applications including plant sciences. This review mainly describes the role of CNT in plant sciences. Contradictory effects of CNT on plants physiology are reported. CNT can act as plant growth inducer causing enhanced plant dry biomass and root/shoot lengths. At the same time, CNT can cause negative effects on plants by forming reactive oxygen species in plant tissues, consequently leading to cell death. Enhanced seed germination with CNT is related to the water uptake process. CNT can be positioned as micro-tubes inside the plant body to enhance the water uptake efficiency. Due to its ability to act as a slow-release fertilizer and plant growth promoter, CNT is transpiring as a novel nano-carbon fertilizer in the field of agricultural sciences. On the other hand, accumulation of CNT in soil can cause deleterious effects on soil microbial diversity, composition and population. It can further modify the balance between plant-toxic metals in soil, thereby enhancing the translocation of heavy metal(loids) into the plant system. The research gaps that need careful attention have been identified in this review.
在过去的十年中，对碳纳米管（CNT）的兴趣迅速增长，使其成为纳米材料家族中不可或缺的一员。由于其独特的物理化学性质，CNT 被广泛应用于许多科学领域，包括植物科学。本文主要描述了 CNT 在植物科学中的作用。报告了 CNT 对植物生理学的矛盾影响。CNT 可以作为植物生长诱导剂，导致植物干生物量和根/茎长度增加。同时，CNT 可以通过在植物组织中形成活性氧而对植物产生负面影响，导致细胞死亡。CNT 增强种子萌发与水分吸收过程有关。CNT 可以作为微管定位在植物体内，提高水分吸收效率。由于其作为缓释肥料和植物生长促进剂的能力，CNT 作为一种新型纳米碳肥料在农业科学领域正在兴起。另一方面，CNT 在土壤中的积累会对土壤微生物多样性、组成和种群产生有害影响。它可以进一步改变土壤中植物毒性金属之间的平衡，从而增强重金属（类）向植物系统的迁移。本文在综述中确定了需要仔细关注的研究空白。
