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Article citations


Lee, S.K. and Cheong, S.C. (1996) Inducing the Head Formation of Iceberg Lettuce (Lactuca sativa L.) in the Tropics through Root Zone Temperature Control. Journal of Tropical Agriculture, 73, 34-42.

has been cited by the following article:

  • TITLE: Adaptation of Arabidopsis Plants to Tropical Aeroponics Using Cool Root Zone Temperatures

    AUTHORS: Sandhya Srikanth, Tsui Wei Choong, Jiashu Chu, Jie He, Zhong Chen

    KEYWORDS: Aeroponics, Arabidopsis, Biomass, Seeds, Root Zone Temperature, Tropical

    JOURNAL NAME: American Journal of Plant Sciences, Vol.8 No.13, December 5, 2017

    ABSTRACT: Arabidopsis thaliana (L.) Heyhn. is a well known model plant in plant research. However, its growth conditions and diminutive stature associated with low biomass at maturity make it a challenging species for physiological studies. While in the tropical countries, it can only be grown either by tissue cultures or in growth chambers under controlled conditions. An aeroponic technique with 20°C ± 2°C and 30°C ± 2°C root-zone temperatures (RZT) was used to grow Arabidopsis (Columbia ecotype) in a tropical greenhouse with natural irradiance and high ambient temperature (38°C/28°C day/night). Seedlings germinated in growth chambers at 20°C or 30°C. At 6 to 8 leaf stage, they were transferred to the aeroponic troughs with their roots exposed to constant temperature of 20°C ± 2°C and 30°C ± 2°C while their aerial parts were subjected to fluctuating ambient temperature from 28°C to 38°C. After a week, plants have acclimatised to both RZTs and started developing normal rosettes, bolted and yielded viable seeds. However, 20°C ± 2°C RZT allowed them to recover from turgor pressure despite of wilting, and significantly increased biomass. Mature plants grown in each RZTs were compared morphologically and physiologically to the plants grown in growth chamber (GC) at 20°C (root and shoot) temperature with 60% relative humidity. Aeroponically grown plants did not experience photoinhibition, and also exhibited higher photosynthetic light usage efficiency and higher capacities of heat dissipation, compared to GC plants. This aeroponics with cool RZTs can allow the use of Arabidopsis as a model plant even under tropical climate.