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Potato Tuber Formation and Metabolism in the Spaceflight Environment
ISSN: 0148-7191, e-ISSN: 2688-3627
Published July 01, 1996 by SAE International in United States
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Five potato (Solanum tuberosum L.) leaf cuttings were flown on STS-73 in late October, 1995 as part of the 16-day USML-2 mission. Pre-flight studies were conducted to study tuber growth, determine carbohydrate concentrations and examine the developing starch grains within the tuber. In these tests, tubers attained a fresh weight of 1.4 g tuber-1 after 13 days. Tuber fresh mass was significantly correlated to tuber diameter. Greater than 60% of the tuber dry mass was starch and the starch grains varied in size from 2 to 40 mm in the long axis. For the flight experiment, cuttings were obtained from seven-week-old Norland potato plants, kept at 5°C for 12 hours then planted into arcillite in the ASTROCULTURE™ flight hardware. The flight package was loaded on-board the orbiter 22 hours prior to launch. During the mission, the flight hardware maintained an environment around the cuttings of 22°C (±2°C), 81% (±7%) RH and a 12 hour photoperiod using red and blue light emitting diodes at a photosynthetic photon flux of 150 μmol m-2 s-1. CO2 concentration exceeded 4000 ppm during the dark period and was controlled during the light period to approximately 400 ppm. Video downlinking of images of the plants and CO2 exchange data during the flight demonstrated plant vitality for the first 12 days of the mission followed by senescence of the leaves. The flight package was received 4 hours after landing at the Kennedy Space Center and post-flight processing of the samples was completed within 3 hours. Four out of the five space-grown cuttings produced tubers that were similar in appearance and dimension to the ground control tubers. This is an important finding if potatoes are to be used as part of a bioregenerative life support system for long-term space exploration.
CitationBrown, C., Tibbitts, T., Croxdale, J., and Wheeler, R., "Potato Tuber Formation and Metabolism in the Spaceflight Environment," SAE Technical Paper 961393, 1996, https://doi.org/10.4271/961393.
- Brown, CS and Piastuch WC 1994. Starch metabolism in germinating soybean cotyledons is sensitive to clinorotation and centrifugation. Plant, Cell and Env. 17:341-344.
- Brown, CS, Tripathy BC and Stutte GW 1996. Photosynthesis and carbohydrate metabolism in microgravity. In: Plants in Space Biology Suge H and Takahashi H (eds). Publisher (in press).
- Duncan, DA and Ewing EE 1984. Initial anatomical changes associated with tuber formation on single-node potato (Solanum tuberosum L.) cuttings. Ann. Bot. 53:607-610.
- Dutcher, FR, Hess EL and Halstead TW 1994. Progress in plant research in space. Adv. Space Res. 14(8): 159-171.
- Ewing, EE 1985. Cuttings as simplified models of the potato plant. In: Potato Physiology Li PH (ed). Academic Press, NY, pp. 153-207.
- Gregory, LE 1956. Some factors for tuberization in the potato plant. Amer. J. Bot. 43:281-288.
- Hammer, PA, Tibbitts TW, Langhans RW and McFarlane JC 1978. Base-line growth studies of ‘Grand Rapids’ lettuce in controlled environments. J. Am. Soc. Hort. Sci. 103:649-655.
- Hannapel, DJ 1991. Characterization of the early events of potato tuber development. Physiol. Plant. 83:568-573.
- Hori, S 1954. Formation of storage starch in storage organs. I. The starch formation in potato tuber. Bot. Mag. 67:57-62.
- Kordyum, EL 1994. Effects of altered gravity on plant cell processes: results of recent space and clinorotation experiments. Adv. Space Res. 14(8):77-85.
- Krauss, A and Marschner H 1984. Growth rate and carbohydrate metabolism of potato tubers exposed to high temperatures. Pot. Res. 27:297-303.
- Morrow, RC, Duffie NA, Tibbitts TW, Bula RJ, Barta DJ, Ming DW, Wheeler RM and Porterfield DM 1995. Plant response in the ASTROCULTURE flight experiment. SAE Tech Paper #951624.
- Obenland, DM and Brown CS 1994. The influence of altered gravity on carbohydrate metabolism in excised wheat leaves. J. Plant Physiol. 144:696-699.
- Paiva, E, Lister RM, Park WD 1983. Induction and accumulation of major proteins of potato in stems and petioles. Plant Physiol. 71:161-168.
- Tibbitts, TW and Alford DK 1982. Controlled ecological life support system use of higher plants. NASA Conf. Pub. 2231. Moffett Field, CA.
- Tripathy, BC, Brown CS, Levine HG and Krikorian AD 1996. Growth and photosynthetic responses of wheat plants grown in space. Plant Physiol. 110:801-806.
- Wheeler, RM 1986. Potato leaf explants as a spceflight test system. NASA TM 88215.
- Wheeler, RM, Hannapel DJ and Tibbitts TW 1988. Comparison of axillary bud growth and patatin accumulation in potato leaf cuttings as assays for tuber induction. Ann. Bot. 62:25-30.
- Wheeler, RM and Tibbitts TW 1986. Utilization of potatoes for life support systems in space. I. Cultivar-photoperiod interactions. Am. Pot. J. 63:315-323.